KB / KB Financial Group Inc. - Depositary Receipt (Common Stock) - Документы SEC, Годовой отчет, Доверенное заявление

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 000-534

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (A

Report on Review of Condensed Consolidated Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

EX-99.1 Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements June 30, 2025 and 2024 (Unaudited) Table of Contents KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 1-2 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 3 Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2025 Commission File Number: 000-534

Form 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Report on Review of Condensed Separate Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

EX-99.2 Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements June 30, 2025 and 2024 (Unaudited) Table of Contents KB Financial Group Inc. Page(s) Report on Review of Condensed Separate Interim Financial Statements 1-2 Separate Interim Financial Statements Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Addr

Report on Review of Condensed Consolidated Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

EX-99.1 Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements March 31, 2025 and 2024 (Unaudited) Table of Contents KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 1-2 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 3 C

Report on Review of Condensed Separate Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements March 31, 2025 and 2024 (Unaudited) KB Financial Group Inc. Page(s) Report on Review of Condensed Separate Interim Financial Statements 1-2 Separate Interim Financial Statements Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes in

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 000-53445

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Ko

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsection (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

EX-13.1 Exhibit 13.1(a) Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsection (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsection (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of KB Financial Group Inc., a corporation organized

/s/ Jong Hee Yang

EX-12.1 Exhibit 12.1(a) I, Jong Hee Yang, certify that: 1. I have reviewed this annual report on Form 20-F of KB Financial Group Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect t

ARTICLES OF INCORPORATION OF KB FINANCIAL GROUP INC. CHAPTER I GENERAL PROVISIONS

EX-1.1 2 d906154dex11.htm EX-1.1 Exhibit 1.1 ARTICLES OF INCORPORATION OF KB FINANCIAL GROUP INC. CHAPTER I GENERAL PROVISIONS Article 1 (Corporate Name) The name of this company shall be “KB Geumyung Jijoo”, which shall be expressed in English as “KB Financial Group Inc.” (the “Company”). Article 2 (Objective) The objective of the Company shall be to engage in the following business activities: 1

As filed with the Securities and Exchange Commission on April 25, 2025 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One)  ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE

Table of Contents As filed with the Securities and Exchange Commission on April 25, 2025 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

Independent Auditor’s Report (English Translation of a Report Originally Issued in Korean)

Table of Contents Exhibit 99.1 KB Financial Group Inc. Consolidated Financial Statements December 31, 2024 and 2023 (With Independent Auditor’s Report Thereon) Table of Contents KB Financial Group Inc. Page(s) Independent Auditor’s Report 1-5 Consolidated Financial Statements Consolidated Statements of Financial Position 6 Consolidated Statements of Comprehensive Income 7-8 Consolidated Statements

Independent Auditor’s Report (English Translation of a Report Originally Issued in Korean)

Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Financial Statements December 31, 2024 and 2023 (With Independent Auditor’s Report Thereon) Table of Contents KB Financial Group Inc. Page(s) Independent Auditor’s Report 1-3 Separate Financial Statements Separate Statements of Financial Position 4 Separate Statements of Comprehensive Income 5 Separate Statements of Changes in Equity

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

The above separate statements of financial position should be read in conjunction with the accompanying notes.

EX-99.1 Exhibit 99.1 KB Financial Group Inc. Separate Statements of Financial Position December 31, 2024 and 2023 (In millions of Korean won) Notes December 31, 2024 December 31, 2023 Assets Cash and due from financial institutions 4,5,6,29 W 398,391 W 256,337 Financial assets at fair value through profit or loss 4,5,7 1,243,471 1,376,423 Loans measured at amortized cost 4,5,8 359,054 608,286 Inve

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

The above consolidated statements of financial position should be read in conjunction with the accompanying notes.

EX-99.2 Exhibit 99.2 KB Financial Group Inc. and Subsidiaries Consolidated Statements of Financial Position December 31, 2024 and 2023, and January 1, 2023 (in millions of Korean won) Notes December 31, 2024 December 31, 2023 January 1, 2023 Assets Cash and due from financial institutions 4,6,7,8,39 W 29,869,111 W 29,836,311 W 32,474,750 Financial assets at fair value through profit or loss 4,6,8,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-5

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2025 Commission File Number: 000-53

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2025 Commission File Number: 000-53

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2025 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2024 Commission File Number: 000-5

6-K 1 d908119d6k.htm FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2024 Commission File Number: 000-5

6-K 1 d917331d6k.htm FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number: 000-5

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number: 000-5

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 0733

Report on Review of Condensed Separate Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements September 30, 2024 and 2023 (Unaudited) KB Financial Group Inc. Page(s) Report on Review of Condensed Separate Interim Financial Statements 1-2 Separate Interim Financial Statements Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Change

KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 1-2 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statem

Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements September 30, 2024 and 2023 (Unaudited) Table of Contents KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 1-2 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 3 Conso

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 000-534

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

Report on Review of Condensed Consolidated Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements June 30, 2024 and 2023 (Unaudited) Table of Contents KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 1-2 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 3 Consolidat

Report on Review of Condensed Separate Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements June 30, 2024 and 2023 (Unaudited) Table of Contents KB Financial Group Inc. Page(s) Report on Review of Condensed Separate Interim Financial Statements 1-2 Separate Interim Financial Statements Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 000-534

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 000-534

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of pr

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of pr

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 000-53445

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Ko

KB Financial Group Inc. Page(s) Report on Review of Condensed Separate Interim Financial Statements 3-4 Separate Interim Financial Statements Separate Interim Statements of Financial Position 5 Separate Interim Statements of Comprehensive Income 6 Se

Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements March 31, 2024 and 2023 (Unaudited) Table of Contents KB Financial Group Inc. Page(s) Report on Review of Condensed Separate Interim Financial Statements 3-4 Separate Interim Financial Statements Separate Interim Statements of Financial Position 5 Separate Interim Statements of Comprehensive Income 6 Separ

KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 3-4 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 5 Consolidated Interim Statem

Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements March 31, 2024 and 2023 (Unaudited) Table of Contents KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 3-4 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 5 Consolida

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of pr

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

As filed with the Securities and Exchange Commission on April 26, 2024 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One)  ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE

As filed with the Securities and Exchange Commission on April 26, 2024 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

Clawback Policy for Misstatements of Financial Statements

Exhibit 97.1 Clawback Policy for Misstatements of Financial Statements HR Department (Regulations) No.60 Adopted 30 Nov, 2023. Article 1 (Purpose) The purpose of this Clawback Policy for Misstatements of Financial Statements (the “Policy”) is to set forth matters necessary to comply with any applicable standards regarding the recovery of erroneously awarded compensation, as stipulated in Rule 10D-

/s/ Jong Hee Yang

EX-12.1 Exhibit 12.1(a) I, Jong Hee Yang, certify that: 1. I have reviewed this annual report on Form 20-F of KB Financial Group Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect t

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsection (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

EX-13.1 Exhibit 13.1(a) Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsection (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsection (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of KB Financial Group Inc., a corporation organized

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-5344

Form 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2024 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2024 Commission File Number: 000-53

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2024 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 000-5

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 000-5

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 000-5

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 000-5

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 000-5

FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

Report on Review of Condensed Separate Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

EX-99.2 Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements September 30, 2023 and 2022 (Unaudited) KB Financial Group Inc. Page(s) Report on Review of Condensed Separate Interim Financial Statements 1-2 Separate Interim Financial Statements Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements o

KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 1-2 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statem

EX-99.1 Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements September 30, 2023 and 2022 (Unaudited) Table of Contents KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 1-2 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 000-5

Form 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2023 Commission File Number: 000-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

Report on Review of Condensed Separate Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements June 30, 2023 and 2022 (Unaudited) KB Financial Group Inc. Page(s) Report on Review of Condensed Separate Interim Financial Statements 1-2 Separate Interim Financial Statements Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes in

Report on Review of Condensed Consolidated Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

EX-99.1 Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements June 30, 2023 and 2022 (Unaudited) Table of Contents KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Condensed Consolidated Interim Financial Statements 1 - 2 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 000-534

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 000-534

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2023 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2023 Commission File Number: 000-53445

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Add

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2023 Commission File Number: 000-53445

Form 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Report on Review of Separate Interim Financial Statements (English Translation of a Report Originally Issued in Korean)

EX-99.2 Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements March 31, 2023 and 2022 (Unaudited) Table of Contents KB Financial Group Inc. Page(s) Report on Review of Separate Interim Financial Statements 3-4 Separate Interim Financial Statements Separate Interim Statements of Financial Position 5 Separate Interim Statements of Comprehensive Income 6 Separat

KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Consolidated Interim Financial Statements 3-4 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 5 Consolidated Interim Statements of Co

EX-99.1 Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements March 31, 2023 and 2022 (Unaudited) Table of Contents KB Financial Group Inc. and Subsidiaries Page(s) Report on Review of Consolidated Interim Financial Statements 3-4 Consolidated Interim Financial Statements Consolidated Interim Statements of Financial Position 5 Consolidate

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-5344

FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

Articles of Incorporation of KB Financial Group (translation in English).

EX-1.1 Exhibit 1.1 ARTICLES OF INCORPORATION OF KB FINANCIAL GROUP INC. CHAPTER I GENERAL PROVISIONS Article 1 (Corporate Name) The name of this company shall be “KB Geumyung Jijoo”, which shall be expressed in English as “KB Financial Group Inc.” (the “Company”). Article 2 (Objective) The objective of the Company shall be to engage in the following business activities: 1. Control over or manageme

Letter of KPMG Samjong Accounting Corp. dated April 26, 2023.

Exhibit 15.1 KPMG Samjong Accounting Corp. 27th Floor, Gangnam Finance Center, 152 Teheran-ro, Gangnam-gu, Seoul 06236 Republic of Korea Tel +82 2 2112 0100 Fax +82 2 2112 0101 www.kpmg.com/kr April 26, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Ladies and Gentlemen: We were previously principal accountants for KB Financial Group Inc. and, under the date of A

Section 906 certifications.

EX-13.1 Exhibit 13.1(a) Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsection (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsection (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of KB Financial Group Inc., a corporation organized

Section 302 certifications.

EX-12.1 Exhibit 12.1(a) I, Jong Kyoo Yoon, certify that: 1. I have reviewed this annual report on Form 20-F of KB Financial Group Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect

As filed with the Securities and Exchange Commission on April 26, 2023 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE A

Table of Contents As filed with the Securities and Exchange Commission on April 26, 2023 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-5344

6-K 1 d475167d6k.htm FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

Form 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

Form 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

Form 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

Form 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

FORM 6-K Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-5344

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Ad

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-5

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-5

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2023 Commission File Number: 000-53

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2023 Commission File Number: 000-53

Form 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant’s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2023 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2023 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2022 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

Contents Page Independent Auditors’ Review Report 1 Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statements of Comprehensive Income 4 Consolidated Interim Statements of Changes in Equity 5 Consolidated Interim Statemen

Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements September 30, 2022 and 2021 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 1 Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statements of Comprehensive Income 4 Consolidate

Contents Page Independent Auditors’ Review Report 1 Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes in Equity 5 Separate Interim Statements of Cash Flows

Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements September 30, 2022 and 2021 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 1 Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes i

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number: 000-5

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 0733

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2022 Commission File Number: 000-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2022 Commission File Number: 000-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

Contents Page Independent Auditors’ Review Report 1 Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes in Equity 5 Separate Interim Statements of Cash Flows

Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements June 30, 2022 and 2021 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 1 Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes in Equ

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2022 Commission File Number: 000-534

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

Contents Page Independent Auditors’ Review Report 1 Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statements of Comprehensive Income 4 Consolidated Interim Statements of Changes in Equity 6 Consolidated Interim Statemen

Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements June 30, 2022 and 2021 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 1 Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statements of Comprehensive Income 4 Consolidated Int

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2022 Commission File Number: 000-534

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2022 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

Contents Page Independent Auditors’ Review Report 3 Separate Interim Statements of Financial Position 5 Separate Interim Statements of Comprehensive Income 6 Separate Interim Statements of Changes in Equity 7 Separate Interim Statements of Cash Flows

Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements March 31, 2022 and 2021 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 3 Separate Interim Statements of Financial Position 5 Separate Interim Statements of Comprehensive Income 6 Separate Interim Statements of Changes in Eq

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number: 000-53445

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Ko

Contents Page Independent Auditors’ Review Report 3 Consolidated Interim Statements of Financial Position 5 Consolidated Interim Statements of Comprehensive Income 6 Consolidated Interim Statements of Changes in Equity 8 Consolidated Interim Statemen

Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements March 31, 2022 and 2021 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 3 Consolidated Interim Statements of Financial Position 5 Consolidated Interim Statements of Comprehensive Income 6 Consolidated In

Section 906 certifications

EX-13.1 Exhibit 13.1(a) Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsection (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsection (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of KB Financial Group Inc., a corporation organized

As filed with the Securities and Exchange Commission on April 27, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE A

Table of Contents As filed with the Securities and Exchange Commission on April 27, 2022 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

Section 302 certifications

EX-12.1 Exhibit 12.1(a) I, Jong Kyoo Yoon, certify that: 1. I have reviewed this annual report on Form 20-F of KB Financial Group Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-5344

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-5344

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2022 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2022 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2022 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2022 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of February 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2022 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2022 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2022 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2021 Commission File Number: 000-5

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

Contents Page Independent Auditors’ Review Report 1 Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes in Equity 5 Separate Interim Statements of Cash Flows

Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements September 30, 2021 and 2020 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 1 Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes i

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2021 Commission File Number: 000-5

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 0733

Contents Page Independent Auditors’ Review Report 1 Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statements of Comprehensive Income 4 Consolidated Interim Statements of Changes in Equity 5 Consolidated Interim Statemen

Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements September 30, 2021 and 2020 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 1 Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statements of Comprehensive Income 4 Consolidate

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2021 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2021 Commission File Number: 000-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2021 Commission File Number: 000-53

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of October 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2021 Commission File Number: 000-534

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2021 Commission File Number: 000-534

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

Contents Page Independent Auditors’ Review Report 1 Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes in Equity 5 Separate Interim Statements of Cash Flows

Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements June 30, 2021 and 2020 (Unaudited) (With Independent Auditors? Review Report Thereon) Contents Page Independent Auditors? Review Report 1 Separate Interim Statements of Financial Position 3 Separate Interim Statements of Comprehensive Income 4 Separate Interim Statements of Changes in Equity 5 Separate Interim Statements of

Contents Page Independent Auditors’ Review Report 1 Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statements of Comprehensive Income 4 Consolidated Interim Statements of Changes in Equity 6 Consolidated Interim Statemen

Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements June 30, 2021 and 2020 (Unaudited) (With Independent Auditors? Review Report Thereon) Contents Page Independent Auditors? Review Report 1 Consolidated Interim Statements of Financial Position 3 Consolidated Interim Statements of Comprehensive Income 4 Consolidated Interim Statements of Changes in Equity

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2021 Commission File Number: 000-53445

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of p

Contents Page Independent Auditors’ Review Report 3 Separate Interim Statements of Financial Position 5 Separate Interim Statements of Comprehensive Income 6 Separate Interim Statements of Changes in Equity 7 Separate Interim Statements of Cash Flows

Table of Contents Exhibit 99.2 KB Financial Group Inc. Separate Interim Financial Statements March 31, 2021 and 2020 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 3 Separate Interim Statements of Financial Position 5 Separate Interim Statements of Comprehensive Income 6 Separate Interim Statements of Changes in Eq

Contents Page Independent Auditors’ Review Report 3 Consolidated Interim Statements of Financial Position 5 Consolidated Interim Statements of Comprehensive Income 6 Consolidated Interim Statements of Changes in Equity 8 Consolidated Interim Statemen

Table of Contents Exhibit 99.1 KB Financial Group Inc. and Subsidiaries Consolidated Interim Financial Statements March 31, 2021 and 2020 (Unaudited) (With Independent Auditors? Review Report Thereon) Table of Contents Contents Page Independent Auditors? Review Report 3 Consolidated Interim Statements of Financial Position 5 Consolidated Interim Statements of Comprehensive Income 6 Consolidated In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2021 Commission File Number: 000-53445

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Ko

Description of KB Financial Group’s Capital Stock.

Table of Contents As filed with the Securities and Exchange Commission on April 27, 2021 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

Section 906 certifications.

EX-13.1 Exhibit 13.1(a) Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Subsection (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code) Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsection (a) and (b) of section 1350, chapter 63 of title 18, United States Code), the undersigned officer of KB Financial Group Inc., a corporation organized

Current Report of Foreign Issuer - FORM 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address o

Section 302 certifications.

Exhibit 12.1(a) I, Jong Kyoo Yoon, certify that: 1. I have reviewed this annual report on Form 20-F of KB Financial Group Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the p

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

Current Report of Foreign Issuer - FORM 6-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331,

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2021 Commission File Number: 000-53445 KB Financial Group Inc. (Translation of registrant?s name into English) 26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea (Address of