AINV / Apollo Investment Corporation - Документы SEC, Годовой отчет, Доверенное заявление

Инвестиционная корпорация Аполло
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ЭТОТ СИМВОЛ БОЛЬШЕ НЕ АКТИВЕН

Основная статистика
LEI 5493005P14I7WFB3FW47
CIK 1278752
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Apollo Investment Corporation
SEC Filings (Chronological Order)
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August 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 11, 2025 MidCap Financial

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 11, 2025 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporat

August 11, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATI

August 11, 2025 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2025

EX-99.1 Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2025 Results for the Quarter Ended June 30, 2025 and Other Recent Highlights: • Net investment income per share for the quarter was $0.39, compared to $0.37 for the quarter ended March 31, 2025 • Net asset value per share as of the end of the quarter was $14.75, compared to $14.93

June 20, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 18, 2025 MidCap Financial In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 18, 2025 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporatio

June 13, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 11, 2025 MidCap Financial In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 11, 2025 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporatio

June 9, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1)

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)

May 12, 2025 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2025

Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2025 Results for the Quarter Ended March 31, 2025 and Other Recent Highlights: • Net investment income per share for the quarter was $0.37 • Net asset value per share as of the end of the quarter was $14.93, compared to $14.98 as of December 31, 2024, a decrease of 0.3% • New investment c

May 12, 2025 EX-10.1

Purchase and Placement Agency Agreement, dated as of February 24, 2025, by and among MFIC Bethesda CLO 2 LLC, as issuer, Deutsche Bank Securities Inc., as initial purchaser and Apollo Global Securities Inc., as placement agent*

EXECUTION VERSION EXHIBIT 10.1 PURCHASE AND PLACEMENT AGREEMENT Dated as of February 24, 2025 Citigroup Global Markets Inc. 388 Greenwich Street, 6th Floor New York, New York 10013 Attention: Structured Credit Products Group Apollo Global Securities, LLC 9 West 57th Street New York, NY 10019 Ladies and Gentlemen: 1. Introductory MFIC Bethesda CLO 2 LLC, a limited liability company formed under the

May 12, 2025 EX-10.2

Collateral Management Agreement, dated as of February 24, 2025, by and between MFIC Bethesda CLO 2 LLC, as issuer, and the Registrant, as collateral manager*

EXECUTION VERSION EXHIBIT 10.2 COLLATERAL MANAGEMENT AGREEMENT dated as of February 24, 2025 by and between MFIC BETHESDA CLO 2 LLC, as Issuer and MIDCAP FINANCIAL INVESTMENT CORPORATION, as Collateral Manager DOCPROPERTY DOCXDOCID DMS=IManage Format=<>.<>.<> \* MERGEFORMAT BUSINESS.32491265.2 Table of Contents Page Section 1. Definitions. 3 Section 2. General Duties and Authority of the Collatera

May 12, 2025 EX-10.3

Master Loan Sale Agreement, dated as of February 24, 2025, by and among the Registrant, as transferor, MFIC Bethesda CLO 2 Depositor LLC, as retention holder and MFIC Bethesda CLO 2 LLC, as issuer*

EXECUTION VERSION EXHIBIT 10.3 MASTER LOAN SALE AGREEMENT among MIDCAP FINANCIAL INVESTMENT CORPORATION, as the Transferor, MFIC BETHESDA CLO 2 DEPOSITOR LLC, as the U.S. Retention Holder, and MFIC BETHESDA CLO 2 LLC, as the Issuer Dated as of February 24, 2025 DOCPROPERTY DOCXDOCID DMS=IManage Format=<>.<>.<> \* MERGEFORMAT BUSINESS.32498585.3 Table of Contents Page ARTICLE I DEFINITIONS 2 Sectio

May 12, 2025 EX-4.1

Indenture, dated as of February 24, 2025, by and between MFIC Bethesda CLO 2 LLC, as issuer and Deutsche Bank National Trust Company, as trustee*

EXECUTION VERSION INDENTURE by and among MFIC Bethesda CLO 2 LLC, Issuer and DEUTSCHE BANK NATIONAL TRUST COMPANY, Trustee Dated as of February 24, 2025 DOCPROPERTY DOCXDOCID DMS=IManage Format=<>.

May 12, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORAT

May 12, 2025 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 12, 2025 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation

April 29, 2025 DEF 14A

SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒     Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

February 25, 2025 EX-14.1

Amended and Restated Code of Ethics*

EXHIBIT 14.1 AMENDED AND RESTATED CODE OF ETHICS FOR MIDCAP FINANCIAL INVESTMENT CORPORATION Section I. Statement of General Fiduciary Principles This Amended and Restated Code of Ethics (the “Code”) has been adopted by MidCap Financial Investment Corporation (the “Corporation”) in compliance with Rule 17j-1 under the Investment Company Act of 1940, as amended (the “Act”). The purpose of the Code

February 25, 2025 EX-19.1

Insider Trading Policy*

EXHIBIT 19.1 PROPOSED POLICY TO APOLLO EMPLOYEES, PARTNERS AND RELATED PARTIES FOR TRADING IN MFIC STOCK General Statement All employees, partners, directors and officers (“Employees”) of Apollo Investment Management, L.P. (“AIM”), MidCap Financial Investment Corporation (the “Corporation”), Apollo Management L.P. (together with its affiliated investment managers, “Apollo Management” and together

February 25, 2025 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended December 31, 2024

Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended December 31, 2024 Results for the Quarter and Fiscal Year Ended December 31, 2024 and Other Recent Highlights: • Net investment income per share for the quarter was $0.40 • Net asset value per share as of the end of the quarter was $14.98, compared to $15.10 as of September 30, 2024

February 25, 2025 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 25, 2025 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorpor

February 25, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATION (

November 7, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorpora

November 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORP

November 7, 2024 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2024

Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2024 Results for the Quarter Ended September 30, 2024 and Other Recent Highlights: • Net investment income per share for the quarter was $0.44, compared to $0.45 for the quarter ended June 30, 2024 • Net asset value per share as of the end of the quarter was $15.10, a decrease of 0.5%

October 21, 2024 8-K

Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): October 17, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as Specified in Its Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorpora

October 21, 2024 EX-10.1

Amended and Restated Senior Secured Revolving Credit Agreement, dated as of October 17, 2024, by and among MidCap Financial Investment Corporation, as borrower, JPMorgan Chase Bank, N.A., as administrative agent, and the lenders party thereto (4)

Exhibit 10.1 EXECUTION VERSION AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT dated as of October 17, 2024 between MIDCAP FINANCIAL INVESTMENT CORPORATION The LENDERS Party Hereto JPMORGAN CHASE BANK, N.A. as Administrative Agent TRUIST BANK, BANK OF MONTREAL, MUFG BANK, LTD. as Syndication Agents $1,815,000,000 JPMORGAN CHASE BANK, N.A. TRUIST SECURITIES, INC. BMO CAPITAL MARKETS

August 13, 2024 EX-FILING FEES

Calculation of Filing Fee Tables Form 424B2 (Form Type) MidCap Financial Investment Corporation (Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

Exhibit 107 Calculation of Filing Fee Tables Form 424B2 (Form Type) MidCap Financial Investment Corporation (Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price (1) Fee Rate Amount of Registration Fee (2) Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Common Stock, par value $0.

August 13, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporat

August 13, 2024 424B2

Filed Pursuant to Rule 424(b)(2) File No. 333-271227 PROSPECTUS SUPPLEMENT (To Prospectus dated April 12, 2023) Up to $200,000,000 Common Stock MidCap Financial Investment Corporation (the “Company”) is a closed-end, externally managed, diversified m

Filed Pursuant to Rule 424(b)(2) File No. 333-271227 PROSPECTUS SUPPLEMENT (To Prospectus dated April 12, 2023) Up to $200,000,000 Common Stock MidCap Financial Investment Corporation (the “Company”) is a closed-end, externally managed, diversified management investment company that has elected to be treated as a business development company (“BDC”) under the Investment Company Act of 1940, as ame

August 13, 2024 EX-10.1

Form of Equity Distribution Agreement, dated as of August 13, 2024, by and among MidCap Financial Investment Corporation, Apollo Investment Management, L.P., Apollo Investment Administration, LLC and the Sales Agent party thereto (3)

Exhibit 10.1 MIDCAP FINANCIAL INVESTMENT CORPORATION (a Maryland corporation) Common Stock, Par Value $0.001 Per Share EQUITY DISTRIBUTION AGREEMENT Ladies and Gentlemen: MidCap Financial Investment Corporation, a Maryland corporation (the “Company”), Apollo Investment Management, L.P., a Delaware limited partnership (the “Adviser”), and Apollo Investment Administration, LLC, a Delaware limited li

August 7, 2024 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2024

Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2024 Results for the Quarter Ended June 30, 2024 and Other Recent Highlights: • Net investment income per share for the quarter was $0.45, compared to $0.44 for the quarter ended March 31, 2024 • Net asset value per share as of the end of the quarter was $15.38, compared to $15.42 as of Ma

August 7, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 7, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporati

August 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact name of

July 22, 2024 EX-99.1

MidCap Financial Investment Corporation Completes Mergers with Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. MFIC Declares Special Distribution of $0.20 Per Share in Connection with Mergers

Exhibit 99.1 MidCap Financial Investment Corporation Completes Mergers with Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. MFIC Declares Special Distribution of $0.20 Per Share in Connection with Mergers New York, NY — July 22, 2024 — MidCap Financial Investment Corporation (NASDAQ: MFIC) today announced that it has completed its previously announced mergers with Apollo

July 22, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 22, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporatio

July 12, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2024 MidCap Financial In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporatio

July 12, 2024 EX-99.1

MidCap Financial Investment Corporation, Apollo Senior Floating Rate Fund Inc., and Apollo Tactical Income Fund Inc. Announce Expected Closing Date for Mergers Dates Announced for Special Cash Payment to Stockholders of Apollo Senior Floating Rate Fu

EX-99.1 Exhibit 99.1 MidCap Financial Investment Corporation, Apollo Senior Floating Rate Fund Inc., and Apollo Tactical Income Fund Inc. Announce Expected Closing Date for Mergers Dates Announced for Special Cash Payment to Stockholders of Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. New York, NY — July 12, 2024 — MidCap Financial Investment Corporation (NASDAQ: MFIC

June 24, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporatio

June 21, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2024 MidCap Financial In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporatio

June 21, 2024 EX-99.1

Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. Announce Stockholder Approval of Mergers with MidCap Financial Investment Corporation

EX-99.1 Exhibit 99.1 Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. Announce Stockholder Approval of Mergers with MidCap Financial Investment Corporation New York, NY — June 21, 2024 — Apollo Senior Floating Rate Fund Inc. (NYSE: AFT) and Apollo Tactical Income Fund Inc. (NYSE: AIF) (AFT and AIF, together, the “CEFs”) today announced that both CEFs received stockholder

May 28, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 28, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation

May 28, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.  )

DEFA14A 1 d840955ddefa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.  ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as

May 22, 2024 424B3

MIDCAP FINANCIAL INVESTMENT CORPORATION APOLLO SENIOR FLOATING RATE FUND INC. APOLLO TACTICAL INCOME FUND INC. Supplement No. 1, dated May 22, 2024, to the Proxy Statement/Prospectus, dated April 4, 2024

Filed Pursuant to Rule 424(b)(3) Registration No. 333-275640 MIDCAP FINANCIAL INVESTMENT CORPORATION APOLLO SENIOR FLOATING RATE FUND INC. APOLLO TACTICAL INCOME FUND INC. Supplement No. 1, dated May 22, 2024, to the Proxy Statement/Prospectus, dated April 4, 2024 As previously disclosed, on November 7, 2023, MidCap Financial Investment Corporation, a Maryland corporation (“MFIC”), Apollo Senior F

May 15, 2024 425

Filed by MidCap Financial Investment Corporation

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: MidCap Financial Investment Corporation Commission File No.

May 14, 2024 425

1

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: MidCap Financial Investment Corporation Commission File No.

May 8, 2024 425

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2024

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: MidCap Financial Investment Corporation Commission File No.

May 8, 2024 425

Filed by MidCap Financial Investment Corporation

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: MidCap Financial Investment Corporation Commission File No.

May 7, 2024 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2024

Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2024 Results for the Quarter Ended March 31, 2024 and Other Recent Highlights: • Net investment income per share for the quarter was $0.44, compared to $0.46 for the quarter ended December 31, 2023 • Net asset value per share as of the end of the quarter was $15.42, compared to $15.41 as

May 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact name of

May 7, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation)

May 1, 2024 425

Filed by MidCap Financial Investment Corporation

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: MidCap Financial Investment Corporation Commission File No.

April 29, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ D

April 29, 2024 DEF 14A

SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒     Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Soliciting Material Pursuant to Rule14a-11(c) or 14a-12 Midcap Financial Investment Corporation (Name of Registrant as Specified in Its Charter) (Name of Person(s) Filing Proxy Statement if other than the Registrant) Payment of Filing Fee (Check the appropriate box): ☒ No fee required.

April 18, 2024 425

1

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: MidCap Financial Investment Corporation Commission File No.

April 4, 2024 424B3

MIDCAP FINANCIAL INVESTMENT CORPORATION 9 West 57th Street New York, NY 10019 MERGER PROPOSED—YOUR VOTE IS VERY IMPORTANT

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-275640 MIDCAP FINANCIAL INVESTMENT CORPORATION 9 West 57th Street New York, NY 10019 MERGER PROPOSED—YOUR VOTE IS VERY IMPORTANT April 4, 2024 Dear Stockholder: You are cordially invited to attend the Special Meeting of Stockholders (the “MFIC Special Meeting”) of MidCap Financial Investment Corporation, a Maryland corporation

April 4, 2024 425

MidCap Financial Investment Corporation, Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. Announce Filing of Definitive Joint Proxy Statement / Prospectus Relating to Previously Announced Proposed Mergers Record Dates Set an

425 Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: MidCap Financial Investment Corporation Commission File No.

April 4, 2024 425

Filed by MidCap Financial Investment Corporation

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 and deemed filed under Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: MidCap Financial Investment Corporation Commission File No.

April 1, 2024 EX-99.(14)(D)

Consent of Deloitte & Touche LLP (Apollo Tactical Income Fund Inc.).

Exhibit 14(d) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2024, relating to the consolidated financial statements and consolidated financial highlights of Apollo Tactical Income Fund Inc.

April 1, 2024 EX-99.(17)(F)

Proxy Card of Apollo Tactical Income Fund Inc.

Exhibit 17(f) SCAN TO VIEW MATERIALS & VOTE APOLLO CREDIT MANAGEMENT, LLC 9 WEST 57TH STREET NEW YORK, NY 10019 VOTE BY INTERNET Before The Meeting - Go to www.

April 1, 2024 EX-99.(14)(C)

Consent of Deloitte & Touche LLP (Apollo Senior Floating Rate Fund Inc.).

Exhibit 14(c) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2024, relating to the consolidated financial statements and consolidated financial highlights of Apollo Senior Floating Rate Fund Inc.

April 1, 2024 EX-99.(14)(A)

Consent of Deloitte & Touche LLP (MidCap Financial Investment Corporation).

Exhibit 14(a) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2023, relating to the financial statements, financial highlights, and senior securities table of MidCap Financial Investment Corporation (the “Company” or “MFIC”) appearing in the Annual Report on Form 10-KT of the Company for the period ended December 31, 2022 and our report dated February 26, 2024, relating to the consolidated financial statements, financial highlights, and senior securities table of the Company appearing in the Annual Report on Form 10-K of the Company for the period ended December 31, 2023.

April 1, 2024 CORRESP

Simpson Thacher & Bartlett LLP 900 G STREET NW WASHINGTON, DC 20001 TELEPHONE: +1-202-636-5500 FACSIMILE: +1-202-636-5502 Direct Dial Number E-mail Address 202-636-5592 [email protected]

Simpson Thacher & Bartlett LLP 900 G STREET NW WASHINGTON, DC 20001 TELEPHONE: +1-202-636-5500 FACSIMILE: +1-202-636-5502 Direct Dial Number E-mail Address 202-636-5592 Steven.

April 1, 2024 EX-99.(17)(E)

Proxy Card of Apollo Senior Floating Rate Fund Inc.

Exhibit 17(e) SCAN TO VIEW MATERIALS & VOTE APOLLO CREDIT MANAGEMENT, LLC. 9 WEST 57TH STREET NEW YORK, NY 10019 VOTE BY INTERNET Before The Meeting - Go to www.proxyvote.com or scan the QR Barcode above Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 p.m. Eastern Time the day before the cut-off date or meeting date. Have your proxy c

April 1, 2024 EX-99.(17)(D)

Proxy Card of MidCap Financial Investment Corporation.

Exhibit 17(d) MIDCAP FINANCIAL INVESTMENT CORPORATION 9 W 57TH STREET NEW YORK, NY 10019 SCAN TO VIEW MATERIALS & VOTE VOTE BY INTERNET Before The Meeting - Go to www.

April 1, 2024 N-14 8C/A

As filed with the Securities and Exchange Commission on April 1, 2024

Table of Contents As filed with the Securities and Exchange Commission on April 1, 2024 Registration No.

March 20, 2024 EX-99.(14)(C)

Consent of Deloitte & Touche LLP (Apollo Senior Floating Rate Fund Inc.).

Exhibit 14(c) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2024, relating to the consolidated financial statements and consolidated financial highlights of Apollo Senior Floating Rate Fund Inc.

March 20, 2024 EX-99.(14)(D)

Consent of Deloitte & Touche LLP (Apollo Tactical Income Fund Inc.).

Exhibit 14(d) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2024, relating to the consolidated financial statements and consolidated financial highlights of Apollo Tactical Income Fund Inc.

March 20, 2024 EX-99.(14)(A)

Consent of Deloitte & Touche LLP (MidCap Financial Investment Corporation).

Exhibit 14(a) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 26, 2024, relating to the consolidated financial statements, financial highlights, and senior securities table of MidCap Financial Investment Corporation (the “Company” or “MFIC”) appearing in the Annual Report on Form 10-K of the Company for the period ended December 31, 2023.

March 20, 2024 EX-99.(14)(E)

Consent of PricewaterhouseCoopers (Merx Aviation Finance LLC).

Exhibit 14(e) CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in this Registration Statement on Form N-14 of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the Merx Aviation Finance, LLC financial statements, which appears in MidCap Financial Investment Corporation’s Annual Report on Form 10-K for the year ended March 31, 2022.

March 20, 2024 EX-99.(14)(B)

Consent of PricewaterhouseCoopers LLP (MidCap Financial Investment Corporation).

Exhibit 14(b) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in this Registration Statement on Form N-14 of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the financial statements and senior securities table, which appears in MidCap Financial Investment Corporation’s Annual Report on Form 10-K for the year ended December 31, 2023.

March 20, 2024 N-14 8C/A

As filed with the Securities and Exchange Commission on March 19, 2024

N-14 8C/A Table of Contents As filed with the Securities and Exchange Commission on March 19, 2024 Registration No.

March 19, 2024 CORRESP

Simpson Thacher & Bartlett LLP 900 G STREET NW WASHINGTON, DC 20001 TELEPHONE: +1-202-636-5500 FACSIMILE: +1-202-636-5502 Direct Dial Number 202-636-5592 E-mail Address [email protected]

Simpson Thacher & Bartlett LLP 900 G STREET NW WASHINGTON, DC 20001 TELEPHONE: +1-202-636-5500 FACSIMILE: +1-202-636-5502 Direct Dial Number 202-636-5592 E-mail Address Steven.

March 4, 2024 425

Filed by MidCap Financial Investment Corporation

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 Subject Company: MidCap Financial Investment Corporation Commission File No.

March 1, 2024 425

MidCap Financial Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended December 31, 2023

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 Subject Company: MidCap Financial Investment Corporation Commission File No.

February 26, 2024 EX-97.1

Clawback Policy*

MIDCAP FINANCIAL INVESTMENT CORPORATION Incentive Compensation Clawback Policy (As Adopted on November 30, 2023 Pursuant to Nasdaq Rule 5608) 1.

February 26, 2024 EX-99.3

Consent of Independent Auditors*

Exhibit 99.3 CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in the Registration Statement on Form N-2 (No. 333- 271227) of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the financial statements of Merx Aviation Finance LLC, which appears in this Form 10-K. /s/ PricewaterhouseCoopers Dublin, Ireland February 26, 2024

February 26, 2024 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended December 31, 2023

Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended December 31, 2023 Results for the Quarter and Fiscal Year Ended December 31, 2023 and Other Recent Highlights: • Net investment income per share for the quarter was $0.46, compared to $0.43 for the quarter ended September 30, 2023 • Net asset value per share as of the end of the qua

February 26, 2024 8-K

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 26, 2024 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorpor

February 26, 2024 EX-99.2

Consent of Independent Registered Public Accounting Firm*

Exhibit 99.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statement on Form N-2 (No. 333-271227) of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the March 31, 2022 financial statements and senior securities table, which appears in this Form 10-K. /s/ PricewaterhouseCoopers LL

February 26, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact name of Regi

January 17, 2024 EX-99.(17)(H)

AFT Side Letter Agreement. *

Exhibit 17(h) LETTER AGREEMENT November 7, 2023 Apollo Investment Management, L.P. 9 West 57th Street New York, NY 10019 Apollo Credit Management, LLC 9 West 57th Street New York, NY 10019 Ladies and Gentlemen: Reference is made to that certain Agreement and Plan of Merger, dated as of November 7, 2023, by and among MidCap Financial Investment Corporation, a Maryland corporation, Apollo Senior Flo

January 17, 2024 EX-99.(14)(E)

Consent of PricewaterhouseCoopers (Merx Aviation Finance LLC).

Exhibit 14(e) CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in this Registration Statement on Form N-14 of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the Merx Aviation Finance, LLC financial statements, which appears in MidCap Financial Investment Corporation’s Transition Report on Form 10-KT for the transition period from April 1, 2022 to December 31, 2022.

January 17, 2024 EX-99.(14)(D)

Consent of Deloitte & Touche LLP (Apollo Tactical Income Fund Inc.).

Exhibit 14(d) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2023, relating to the consolidated financial statements and consolidated financial highlights of Apollo Tactical Income Fund Inc.

January 17, 2024 EX-99.(17)(I)

AIF Side Letter Agreement. *

Exhibit 17(i) LETTER AGREEMENT November 7, 2023 Apollo Investment Management, L.P. 9 West 57th Street New York, NY 10019 Apollo Credit Management, LLC 9 West 57th Street New York, NY 10019 Ladies and Gentlemen: Reference is made to that certain Agreement and Plan of Merger, dated as of November 7, 2023, by and among MidCap Financial Investment Corporation, a Maryland corporation, Apollo Tactical I

January 17, 2024 EX-99.(17)(G)

MFIC Side Letter Agreement. *

Exhibit 17(g) LETTER AGREEMENT November 7, 2023 Apollo Investment Management, L.P. 9 West 57th Street New York, NY 10019 Ladies and Gentlemen: Reference is made to (i) that certain Agreement and Plan of Merger, dated as of November 7, 2023, by and among MidCap Financial Investment Corporation, a Maryland corporation (“MFIC”), Apollo Senior Floating Rate Fund Inc., a Maryland corporation, AFT Merge

January 17, 2024 EX-99.(14)(C)

Consent of Deloitte & Touche LLP (Apollo Senior Floating Rate Fund Inc.).

Exhibit 14(c) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2023, relating to the consolidated financial statements and consolidated financial highlights of Apollo Senior Floating Rate Fund Inc.

January 17, 2024 EX-99.(14)(B)

Consent of PricewaterhouseCoopers LLP (MidCap Financial Investment Corporation).

Exhibit 14(b) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in this Registration Statement on Form N-14 of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the financial statements and senior securities table, which appears in MidCap Financial Investment Corporation’s Transition Report on Form 10-KT for the transition period from April 1, 2022 to December 31, 2022.

January 17, 2024 N-14 8C/A

As filed with the Securities and Exchange Commission on January 16, 2024

N-14 8C/A Table of Contents As filed with the Securities and Exchange Commission on January 16, 2024 Registration No.

January 17, 2024 EX-99.(14)(A)

Consent of Deloitte & Touche LLP (MidCap Financial Investment Corporation).

Exhibit 14(a) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2023, relating to the financial statements and financial highlights of MidCap Financial Investment Corporation (the “Company” or “MFIC”) appearing in the Annual Report on Form 10-KT of the Company for the year ended December 31, 2022, and to the references to us under the headings “The Mergers”, “Senior Securities of MFIC”, “Financial Highlights of MFIC” and “Independent Registered Public Accounting Firms” in the Prospectus, which are part of such Registration Statement.

January 16, 2024 CORRESP

Simpson Thacher & Bartlett LLP 900 G STREET NW WASHINGTON, DC 20001 TELEPHONE: +1-202-636-5500 FACSIMILE: +1-202-636-5502 Direct Dial Number 202-636-5592 E-mail Address [email protected]

Simpson Thacher & Bartlett LLP 900 G STREET NW WASHINGTON, DC 20001 TELEPHONE: +1-202-636-5500 FACSIMILE: +1-202-636-5502 Direct Dial Number 202-636-5592 E-mail Address Steven.

December 13, 2023 EX-4.2

Sixth Supplemental Indenture, dated December 13, 2023, relating to the 8.00% Notes due 2028, between the Registrant and U.S. Bank Trust Company, National Association, as Trustee (12)

EX-4.2 Exhibit 4.2 SIXTH SUPPLEMENTAL INDENTURE between MIDCAP FINANCIAL INVESTMENT CORPORATION and U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee Dated as of December 13, 2023 SIXTH SUPPLEMENTAL INDENTURE THIS SIXTH SUPPLEMENTAL INDENTURE (this “Sixth Supplemental Indenture”), dated as of December 13, 2023, is between MidCap Financial Investment Corporation, a Maryland corporation (the

December 13, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 13, 2023 MidCap Financial

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 13, 2023 MidCap Financial Investment Corporation (Exact name of registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.

December 13, 2023 8-A12B

As filed with the Securities and Exchange Commission on December 13, 2023 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SEC

As filed with the Securities and Exchange Commission on December 13, 2023 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

December 13, 2023 EX-1.1

Underwriting Agreement dated December 6, 2023 by and among MidCap Financial Investment Corporation, Apollo Investment Management, L.P., Apollo Investment Administration, LLC and Morgan Stanley & Co. LLC, RBC Capital Markets, LLC and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein.

EX-1.1 Exhibit 1.1 $75,000,000 MIDCAP FINANCIAL INVESTMENT CORPORATION 8.00% Notes Due 2028 UNDERWRITING AGREEMENT New York, New York December 6, 2023 Morgan Stanley & Co. LLC RBC Capital Markets, LLC Wells Fargo Securities, LLC As representatives (“Representatives”) of each of the several underwriters named in Schedule II hereto c/o Morgan Stanley & Co. LLC 1585 Broadway New York, New York 10036

December 8, 2023 EX-FILING FEES

Calculation of Filing Fee Table (Form Type) MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact Name of Registrant as Specified in Its Charter) Table 1: Newly Registered Securities

EXHIBIT 107 Calculation of Filing Fee Table 424(b)(2) (Form Type) MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact Name of Registrant as Specified in Its Charter) Table 1: Newly Registered Securities The prospectus supplement to which this Exhibit is attached is a final prospectus for the related offering.

December 8, 2023 424B2

8.00% Notes due 2028

Filed Pursuant to Rule 424(b)(2) File No. 333-271227 PROSPECTUS SUPPLEMENT $75,000,000 8.00% Notes due 2028 We are offering $75,000,000 in aggregate principal amount of our 8.00% Notes due 2028, which we refer to in this prospectus supplement as the Notes. The Notes will mature on December 15, 2028. We will pay interest on the Notes on March 15, June 15, September 15 and December 15 of each year,

December 6, 2023 FWP

MIDCAP FINANCIAL INVESTMENT CORPORATION 8.00% Notes due 2028 PRICING TERM SHEET December 6, 2023

Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated December 6, 2023 Relating to Preliminary Prospectus Supplement dated December 6, 2023 and Prospectus dated April 12, 2023 Registration No.

December 6, 2023 424B2

Subject to Completion, dated December 6, 2023

Table of Contents Filed Pursuant to Rule 424(b)(2) File No. 333-271227 The information in this preliminary prospectus supplement and the accompanying prospectus is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are part of an effective registration statement filed with the Securities and Exchange Commission. This preliminary prospectus suppl

November 17, 2023 EX-99.(12)

Opinion and Consent of Simpson Thacher & Bartlett LLP.

Exhibit 12 425 LEXINGTON AVENUE NEW YORK, NY 10017-3954 TELEPHONE: +1-212-455-2000 FACSIMILE: +1-212-455-2502 Direct Dial Number E-mail Address November 17, 2023 MidCap Financial Investment Corporation 9 West 57th Street New York, NY 10019 Apollo Tactical Income Fund Inc.

November 17, 2023 EX-99.(14)(A)

Consent of Deloitte & Touche LLP (MidCap Financial Investment Corporation).

Exhibit 14(a) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2023, relating to the consolidated financial statements and consolidated financial highlights of MidCap Financial Investment Corporation (the “Company” or “MFIC”) appearing in the Annual Report on Form 10-KT of the Company for the year ended December 31, 2022, and to the references to us under the headings “Senior Securities of MFIC”, “Financial Highlights of MFIC” and “Independent Registered Public Accounting Firm” in the Prospectus, which are part of such Registration Statement.

November 17, 2023 EX-99.(11)

Opinion and Consent of Miles & Stockbridge P.C.

Exhibit 11 November 17, 2023 MidCap Investment Corporation 9 West 57th Street New York, New York 10019 Ladies and Gentlemen: We have acted as counsel to MidCap Financial Investment Corporation, a Maryland corporation (the “Company”), in connection with the filing by the Company of a Registration Statement on Form N-14, as amended (the “Registration Statement”), pursuant to which the Company is registering under the Securities Act of 1933, as amended (the “Act”), common stock, par value $0.

November 17, 2023 N-14 8C

As filed with the Securities and Exchange Commission on November 17, 2023

Table of Contents As filed with the Securities and Exchange Commission on November 17, 2023 Registration No.

November 17, 2023 EX-99.(17)(E)

Form of Proxy Card of Apollo Senior Floating Rate Fund Inc.

Exhibit (17)(e) APOLLO Funds APOLLO CREDIT MANAGEMENT, LLC. 9 WEST 57TH STREET NEW YORK, NY 10019 SCAN TO VIEW MATERIALS & VOTE w VOTE BY INTERNET Before The Meeting - Go to www.proxyvote.com or scan the QR Barcode above Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 p.m. Eastern Time the day before the cut-off date or meeting date.

November 17, 2023 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form N-14 (Form Type) MidCap Financial Investment Corporation (Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(1) Fee Rate Amount of Registration Fee(2) Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Common Stock, par value $0.

November 17, 2023 EX-99.(14)(C)

Consent of Deloitte & Touche LLP (Apollo Senior Floating Rate Fund Inc.).

Exhibit 14(c) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2023, relating to the consolidated financial statements and consolidated financial highlights of Apollo Senior Floating Rate Fund Inc.

November 17, 2023 EX-99.(17)(D)

Form of Proxy Card of MidCap Financial Investment Corporation.

Exhibit (17)(d) SCAN TO VIEW MATERIALS & VOTE MIDCAP FINANCIAL INVESTMENT CORPORATION VIEW MATERIALS & VOTE w 9 W 57TH STREET NEW YORK, NY 10019 VOTE BY INTERNET Before The Meeting - Go to www.

November 17, 2023 EX-99.(17)(A)

Consent of Lazard Frères & Co. LLC.

Exhibit 17(a) Lazard Frères & Co. LLC 30 Rockefeller Plaza New York, NY 10112 The Special Committee of the Board of Directors MidCap Financial Investment Corporation 9 West 57th Street New York, NY 10019 The Special Committee of the Board of Directors: We hereby consent to the inclusion of our opinion letters, each dated November 6, 2023, to the Special Committee of the Board of Directors of MidCa

November 17, 2023 EX-99.(14)(D)

Consent of Deloitte & Touche LLP (Apollo Tactical Income Fund Inc.).

Exhibit 14(d) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-14 of our report dated February 21, 2023, relating to the consolidated financial statements and consolidated financial highlights of Apollo Tactical Income Fund Inc.

November 17, 2023 EX-99.(14)(B)

Consent of PricewaterhouseCoopers LLP (MidCap Financial Investment Corporation).

Exhibit 14(b) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in this Registration Statement on Form N-14 of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the financial statements and senior securities table, which appears in MidCap Financial Investment Corporation’s Transition Report on Form 10-KT for the transition period from April 1, 2022 to December 31, 2022.

November 17, 2023 EX-99.(17)(C)

Consent of Keefe, Bruyette & Woods, Inc.

Exhibit 17(c) [LETTERHEAD] CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to (i) the special committee of the Board of Directors (the “Board”) of Apollo Tactical Income Fund Inc. (“AIF”) and (ii) the Board of AIF, as Annex E to the Joint Proxy Statement/Prospectus which forms a part of the Registration Statement on Form N-14 filed on the date here

November 17, 2023 EX-99.(17)(B)

Consent of Keefe, Bruyette & Woods, Inc.

Exhibit 17(b) [LETTERHEAD] CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to (i) the special committee of the Board of Directors (the “Board”) of Apollo Senior Floating Rate Fund Inc. (“AFT”) and (ii) the Board of AFT, as Annex D to the Joint Proxy Statement/Prospectus which forms a part of the Registration Statement on Form N-14 filed on the date

November 17, 2023 EX-99.(14)(E)

Consent of PricewaterhouseCoopers LLP (Merx Aviation Finance LLC).

Exhibit 14(e) CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in this Registration Statement on Form N-14 of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the Merx Aviation Finance, LLC financial statements, which appears in MidCap Financial Investment Corporation’s Transition Report on Form 10-KT for the transition period from April 1, 2022 to December 31, 2022.

November 17, 2023 EX-99.(16)

Power of Attorney.

Exhibit 16 POWER OF ATTORNEY KNOW ALL PEOPLE BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Tanner Powell, Kristin Hester, Gregory W.

November 17, 2023 EX-99.(17)(F)

Form of Proxy Card of Apollo Tactical Income Fund Inc.

Exhibit (17)(f) APOLLO CREDIT MANAGEMENT, LLC 9 WEST 57TH STREET NEW YORK, NY 10019 SCAN TO VIEW MATERIALS & VOTE w VOTE BY INTERNET Before The Meeting - Go to www.

November 8, 2023 425

Operator turns back for closing remarks

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 Subject Company: MidCap Financial Investment Corporation Commission File No.

November 7, 2023 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2023 MidCap Financial

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorpora

November 7, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact nam

November 7, 2023 EX-2.2

Agreement and Plan of Merger, dated as of November 7, 2023, among the Registrant, Apollo Tactical Income Fund Inc., AIF Merger Sub, Inc. and Apollo Investment Management, L.P. (for the limited purposes set forth therein) (2)

Exhibit 2.2 AGREEMENT AND PLAN OF MERGER among MIDCAP FINANCIAL INVESTMENT CORPORATION, AIF MERGER SUB, INC., APOLLO TACTICAL INCOME FUND INC. and APOLLO INVESTMENT MANAGEMENT, L.P. (for the limited purposes set forth herein) Dated as of November 7, 2023 TABLE OF CONTENTS Page Article I THE MERGERS 2 1.1. The Merger 2 1.2. Closing 2 1.3. Effective Time 2 1.4. Effects of the Merger 3 1.5. Conversio

November 7, 2023 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2023 and Announces Merger Agreements with Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc.

Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2023 and Announces Merger Agreements with Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. Results for the Quarter Ended September 30, 2023 and Other Recent Highlights: • Net investment income per share for the quarter was $0.43, compared to $0.44 for the qua

November 7, 2023 EX-99.2

MidCap Financial Investment Corporation Announces Merger Agreements with Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. Transaction Provides Financial and Strategic Benefits to All Shareholders Creates a Larger, More Scale

Exhibit 99.2 MidCap Financial Investment Corporation Announces Merger Agreements with Apollo Senior Floating Rate Fund Inc. and Apollo Tactical Income Fund Inc. Transaction Provides Financial and Strategic Benefits to All Shareholders Creates a Larger, More Scaled BDC Focused on Middle Market Direct Lending Combined Company Will Have Approximately $3.4 Billion of Total Investments and $1.4 Billion

November 7, 2023 425

Filed by MidCap Financial Investment Corporation

Filed by MidCap Financial Investment Corporation pursuant to Rule 425 under the Securities Act of 1933 Subject Company: MidCap Financial Investment Corporation Commission File No.

November 7, 2023 EX-2.1

Agreement and Plan of Merger, dated as of November 7, 2023, among the Registrant, Apollo Senior Floating Rate Fund Inc., AFT Merger Sub, Inc. and Apollo Investment Management, L.P. (for the limited purposes set forth therein) (1)

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER among MIDCAP FINANCIAL INVESTMENT CORPORATION, AFT MERGER SUB, INC., APOLLO SENIOR FLOATING RATE FUND INC. and APOLLO INVESTMENT MANAGEMENT, L.P. (for the limited purposes set forth herein) Dated as of November 7, 2023 TABLE OF CONTENTS Page Article I THE MERGERS 2 1.1. The Merger 2 1.2. Closing 2 1.3. Effective Time 2 1.4. Effects of the Merger 3 1.5. Conv

November 7, 2023 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Results of Operations and Financial Condition, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorpora

November 3, 2023 EX-10.2

Indenture, dated as of November 2, 2023, by and between MFIC Bethesda CLO 1 LLC, as issuer and Deutsche Bank National Trust Company, as trustee (23)

Exhibit 10.2 EXECUTION VERSION INDENTURE by and among MFIC BETHESDA CLO 1 LLC, Issuer and DEUTSCHE BANK NATIONAL TRUST COMPANY, Trustee Dated as of November 2, 2023 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 2 Section 1.1 Definitions 2 Section 1.2 Usage of Terms 69 Section 1.3 Assumptions as to Assets 69 ARTICLE II THE NOTES 73 Section 2.1 Forms Generally 73 Section 2.2 Forms of Notes 73 Section

November 3, 2023 EX-10.1

Purchase and Placement Agency Agreement, dated as of November 2, 2023, by and among MFIC Bethesda CLO 1 LLC, as issuer, Deutsche Bank Securities Inc., as initial purchaser and Apollo Global Securities Inc., as placement agent (24)

Exhibit 10.1 EXECUTION VERSION STRICTLY PRIVATE AND CONFIDENTIAL Dated as of November 2, 2023 U.S.$232,000,000 Class A-1 Senior Secured Floating Rate Notes due 2035 U.S.$16,000,000 Class A-2 Senior Secured Floating Rate Notes due 2035 U.S.$154,360,000 Subordinated Notes due 2123 MFIC Bethesda CLO 1 LLC PURCHASE AND PLACEMENT AGENCY AGREEMENT MFIC Bethesda CLO 1 LLC PURCHASE AND PLACEMENT AGENCY AG

November 3, 2023 EX-10.4

Master Loan Sale Agreement, dated as of November 2, 2023, by and among the Registrant, as transferor, MFIC Bethesda CLO 1 Depositor LLC, as retention holder and MFIC Bethesda CLO 1 LLC, as issuer (26)

Exhibit 10.4 EXECUTION VERSION MASTER LOAN SALE AGREEMENT among MIDCAP FINANCIAL INVESTMENT CORPORATION, as the Transferor, MFIC BETHESDA CLO 1 DEPOSITOR LLC, as the U.S. Retention Holder, and MFIC BETHESDA CLO 1 LLC, as the Issuer Dated as of November 2, 2023 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 2 Section 1.1. Definitions 2 Section 1.2. Other Terms 5 Section 1.3. Computation of Time Perio

November 3, 2023 EX-10.3

Collateral Management Agreement, dated as of November 2, 2023, by and between MFIC Bethesda CLO 1 LLC, as issuer, and the Registrant, as collateral manager (25)

Exhibit 10.3 EXECUTION VERSION COLLATERAL MANAGEMENT AGREEMENT dated as of November 2, 2023 by and between MFIC BETHESDA CLO 1 LLC, as Issuer and MIDCAP FINANCIAL INVESTMENT CORPORATION, as Collateral Manager TABLE OF CONTENTS Page SECTION 1. DEFINITIONS 3 SECTION 2. GENERAL DUTIES AND AUTHORITY OF THE COLLATERAL MANAGER 6 SECTION 3. PURCHASE AND SALE TRANSACTIONS; BROKERAGE 12 SECTION 4. ADDITION

November 3, 2023 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): November 2, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as Specified in Its Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorpora

August 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact name of

August 2, 2023 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2023

EX-99.1 Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2023 Results for the Quarter Ended June 30, 2023 and Other Recent Highlights: • Net investment income per share for the quarter was $0.44, compared to $0.45 for the quarter ended March 31, 2023 • Net asset value per share as of the end of the quarter was $15.20, compared to $15.18

August 2, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2023 MidCap Financial I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporati

July 14, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 10, 2023 MidCap Financial In

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 10, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporatio

June 7, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 2, 2023 MidCap Financial Inv

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 2, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation

May 2, 2023 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2023

EX-99.1 Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2023 Results for the Quarter Ended March 31, 2023 and Other Recent Highlights: • Net investment income per share for the quarter was $0.45 compared to $0.43 for the quarter ended December 31, 2022 • Net asset value per share as of the end of the quarter was $15.18 compared to $15.

May 2, 2023 EX-99.1

May 2023

EX-99.1 Exhibit 99.1 May 2023 Dear Shareholders, We would like to begin by saying thank you for your interest in MidCap Financial Investment Corporation (“MFIC”, “the Company”, “our” or “we”).1 We are pleased to present you with the 2022 Annual Report for MFIC.2 In 2022, MFIC made a few transformative changes reinforcing its position as a pure play senior secured middle market listed business deve

May 2, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 2, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation)

May 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact name of

May 2, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 1, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation)

May 1, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

May 1, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEF 14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

April 28, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 28, 2023 MidCap Financial I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 28, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporati

April 20, 2023 EX-10.1

Amended and Restated Senior Secured Revolving Credit Agreement, dated as of April 19, 2023, between MidCap Financial Investment Corporation, the lenders party thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent (8)

EX-10.1 Exhibit 10.1 Execution Version AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT dated as of April 19, 2023 between MIDCAP FINANCIAL INVESTMENT CORPORATION The LENDERS Party Hereto JPMORGAN CHASE BANK, N.A. as Administrative Agent TRUIST BANK, BANK OF MONTREAL MUFG BANK, LTD. as Syndication Agents $1,705,000,000 JPMORGAN CHASE BANK, N.A. TRUIST SECURITIES, INC. BMO CAPITAL MAR

April 20, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 19, 2023 MidCap Financial I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 19, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporati

April 20, 2023 EX-99.1

MidCap Financial Investment Corporation Amends and Extends Its Senior Secured Revolving Credit Facility

EX-99.1 Exhibit 99.1 MidCap Financial Investment Corporation Amends and Extends Its Senior Secured Revolving Credit Facility New York, NY – April 20, 2023 – MidCap Financial Investment Corporation (NASDAQ: MFIC) (the “Company”) announced today that it has amended and extended its senior secured, multi-currency, revolving credit facility (the “Facility”). Lender commitments under the Facility will

April 12, 2023 N-2ASR

As filed with the Securities and Exchange Commission on April 12, 2023

N-2ASR Table of Contents As filed with the Securities and Exchange Commission on April 12, 2023 Securities Act File No.

April 12, 2023 EX-99.(N)(2)

Consent of Deloitte & Touche LLP (†)

EX-(n)(2) Exhibit (n)(2) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in this Registration Statement on Form N-2 of our report dated February 21, 2023, relating to the financial statements and financial highlights of Midcap Financial Investment Corporation appearing in the Transition Report on Form 10-KT of Midcap Financial Investment Corporation for the period from April 1, 2022 to December 31, 2022, our report dated February 21, 2023, on the senior securities table included in this Registration Statement, and to the references to us under the headings “Financial Highlights”, “Senior Securities” and “Independent Registered Public Accounting Firms” in the Registration Statement.

April 12, 2023 EX-99.(L)(2)

Opinion and Consent of Simpson Thacher & Bartlett LLP (†)

EX-(l)(2) Exhibit (l)(2) April 12, 2023 MidCap Financial Investment Corporation 9 West 57th Street New York, New York 10019 Ladies and Gentlemen: We have acted as counsel to MidCap Financial Investment Corporation, a Maryland corporation (the “Company”), in connection with the Registration Statement on Form N-2 (the “Registration Statement”) filed by the Company with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended, relating to (i) shares of common stock of the Company $0.

April 12, 2023 EX-FILING FEES

Filing Fee Table(†)

EX-(s) Exhibit (s) EX. FILING FEES Calculation of Filing Fee Tables Form N-2 (Form Type) Midcap Financial Investment Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amoun

April 12, 2023 EX-99.(N)(3)

Consent of PricewaterhouseCoopers LLP relating to the to the March 31, 2022 financial statements and senior securities table of MidCap Financial Investment Corporation (†)

EX-(n)(3) Exhibit (n)(3) CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in this Registration Statement on Form N-2 of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the financial statements and senior securities table, which appears in MidCap Financial Investment Corporation’s Transition Report on Form 10-KT for the transition period from April 1, 2022 to December 31, 2022.

April 12, 2023 EX-99.(L)(1)

Opinion and Consent of Miles & Stockbridge, P.C., special Maryland Counsel for the Registrant (†)

EX-(l)(1) Exhibit (l)(1) April 12, 2023 Midcap Financial Investment Corporation 9 West 57th Street New York, New York 10019 Re: Registration Statement on Form N-2 (Registration No.

April 12, 2023 EX-99.(N)(5)

Power of Attorney (†)

EX-(n)(5) Exhibit (n)(5) POWER OF ATTORNEY KNOW ALL PEOPLE BY THESE PRESENTS, that each person whose signature appears below hereby makes, constitutes and appoints each of Tanner Powell, Kristin Hester, Gregory W.

April 12, 2023 EX-99.(N)(4)

Consent of PricewaterhouseCoopers, independent accountants, relating to the consolidated financial statements of Merx Aviation Finance LLC and subsidiaries (†)

EX-(n)(4) Exhibit (n)(4) CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in this Registration Statement on Form N-2 of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the Merx Aviation Finance, LLC financial statements, which appears in MidCap Financial Investment Corporation’s Transition Report on Form 10-KT for the transition period from April 1, 2022 to December 31, 2022.

April 12, 2023 EX-99.(D)(2)

Form T-1 Statement of Eligibility of U.S. Bank Trust Company, National Association, as Trustee, with respect to the Form of Indenture for debt securities (†)

EX-(d)(2) Exhibit (d)(2) SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION (Exact name of Trustee as specified in its charter) 91-1821

March 17, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 16, 2023 MidCap Financial I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 16, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporati

March 8, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 8, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporatio

February 21, 2023 10-KT

Form 10-KT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ¨ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended OR x TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from April 1, 2022 to December 31, 2022 Commission File Number: 814-00646 MIDCAP FINA

February 21, 2023 EX-99

Consent of Independent Registered Public Accounting Firm*

Exhibit 99.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statement on Form N-2 (No. 333-238518) of MidCap Financial Investment Corporation of our report dated May 19, 2022 relating to the March 31, 2022 financial statements and senior securities table, which appears in this Transiton Report on Form 10-K. /s/ Price

February 21, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 21, 2023 MidCap Financia

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 21, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorpor

February 21, 2023 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended December 31, 2022, and Increases Quarterly Base Dividend to $0.38 Per Share

EX-99.1 Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended December 31, 2022, and Increases Quarterly Base Dividend to $0.38 Per Share Results for the Quarter Ended December 31, 2022 and Other Recent Highlights: • Net investment income per share for the quarter was $0.43 compared to $0.35 for the quarter ended September 30, 2022 • N

February 21, 2023 EX-10

Fourth Amended and Restated Investment Advisory Management Agreement between the Registrant and Apollo Investment Management, L.P. (14)

Exhibit 10.8 FOURTH AMENDED AND RESTATED INVESTMENT ADVISORY MANAGEMENT AGREEMENT BETWEEN APOLLO INVESTMENT CORPORATION AND APOLLO INVESTMENT MANAGEMENT, L.P. Fourth Amended and Restated Agreement made this 1st day of August 2022, by and between APOLLO INVESTMENT CORPORATION, a Maryland corporation (the “Corporation”), and APOLLO INVESTMENT MANAGEMENT L.P., a Delaware limited partnership (the “Adv

February 21, 2023 EX-99

Consent of Independent Auditors*

Exhibit 99.3 CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in the Registration Statement on Form N-2 (No. 333-238518) of Midcap Financial Investment Corporation of our report dated May 19, 2022 relating to the financial statements of Merx Aviation Finance LLC, which appears in this Transition Report on this Form 10-K. /s/ PricewaterhouseCoopers Dublin, Ireland

January 24, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 23, 2023 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorpora

November 3, 2022 EX-99.1

MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2022, and Increases Quarterly Base Dividend to $0.37 Per Share

Exhibit 99.1 MidCap Financial Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2022, and Increases Quarterly Base Dividend to $0.37 Per Share Fiscal Second Quarter and Other Recent Highlights: ? Net investment income per share for the quarter was $0.35 compared to $0.37 for the quarter ended June 30, 2022 ? Net asset value per share as of the end of the quarter

November 3, 2022 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2022 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorpora

November 3, 2022 EX-15.1

Awareness Letter From PricewaterhouseCoopers LLP*

Exhibit 15.1 November 3, 2022 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated November 4, 2021 on our review of the interim statements of operations and of changes in net assets of MidCap Financial Investment Corporation for the three-month and six-month periods ended September 30 2021, and the interim statement of cash f

November 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 MIDCAP FINANCIAL INVESTMENT CORPORATION (Exact nam

August 12, 2022 EX-3.2

Articles of Amendment and Restatement (1)

Exhibit 3.2 ARTICLES OF RESTATEMENT OF MIDCAP FINANCIAL INVESTMENT CORPORATION FIRST: MidCap Financial Investment Corporation (the ?Corporation?), a Maryland corporation, desires to restate its charter. SECOND: The following provisions are all the provisions of the Corporation?s charter currently in effect: ARTICLE I NAME The name of the corporation (the ?Corporation?) is: MidCap Financial Investm

August 12, 2022 EX-3.3

Sixth Amended and Restated Bylaws (2)

Exhibit 3.3 MIDCAP FINANCIAL INVESTMENT CORPORATION SIXTH AMENDED AND RESTATED BYLAWS ARTICLE I OFFICES Section 1. PRINCIPAL OFFICE. The principal office of the Corporation in the State of Maryland shall be located at such place as the Board of Directors may designate. Section 2. ADDITIONAL OFFICES. The Corporation may have additional offices, including a principal executive office, at such places

August 12, 2022 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9, 2022 MidCap Financial Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporati

August 12, 2022 EX-3.1

Articles of Amendment (previously filed as Exhibit 3.1 to MFIC’s Current Report on Form 8-K filed on July 22, 2019 and incorporated herein by reference).

Exhibit 3.1 ARTICLES OF AMENDMENT APOLLO INVESTMENT CORPORATION Apollo Investment Corporation, a Maryland corporation (the ?Corporation?), does hereby certify to the State Department of Assessments and Taxation of the State of Maryland that: FIRST: The charter of the Corporation (the ?Charter?) is hereby amended by deleting Article I in its entirety and inserting in lieu thereof the following: ?AR

August 4, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2022 Apollo Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation) (Commi

August 3, 2022 424B2

Filed Pursuant to Rule 424(b)(2) File No. 333-238518 PROSPECTUS SUPPLEMENT To the Prospectus dated July 17, 2020 1,932,641 Shares Common Stock We are offering directly to MFIC Holdings, LP (“MFIC Holdings”), a subsidiary of MidCap FinCo Designated Ac

Table of Contents Filed Pursuant to Rule 424(b)(2) File No. 333-238518 PROSPECTUS SUPPLEMENT To the Prospectus dated July 17, 2020 1,932,641 Shares Common Stock We are offering directly to MFIC Holdings, LP (?MFIC Holdings?), a subsidiary of MidCap FinCo Designated Activity Company (?MidCap Financial?), a middle-market specialty finance firm discretionarily managed by an affiliate of our investmen

August 2, 2022 EX-99.2

Apollo Investment Corporation Announces Transformative Changes to Reinforce Position as a Pure Play Senior Secured Middle Market BDC Providing Public Shareholder Access to Institutional-Quality Private Credit New Industry-Leading Fee Structure Suppor

Exhibit 99.2 Apollo Investment Corporation Announces Transformative Changes to Reinforce Position as a Pure Play Senior Secured Middle Market BDC Providing Public Shareholder Access to Institutional-Quality Private Credit New Industry-Leading Fee Structure Supports Senior Secured Investment Strategy MidCap Financial 1, one of the World?s Leading Middle Market Origination Businesses, Makes Aligning

August 2, 2022 EX-15.1

Awareness Letter From PricewaterhouseCoopers LLP

Exhibit 15.1 August 2, 2022 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We are aware that our report dated August 5, 2021 on our review of the interim statements of operations, of changes in net assets and of cash flows of Apollo Investment Corporation for the three-month period ended June 30 2021, including the related notes of Apollo Investment Corpo

August 2, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Registrant

August 2, 2022 EX-1.3

Trademark License Agreement between MFIC and Apollo Capital Management, L.P. (previously filed as Exhibit 1.3 to MFIC’s Current Report on Form 8-K filed on August 2, 2022 and incorporated herein by reference).

Exhibit 1.3 TRADEMARK LICENSE AGREEMENT This TRADEMARK LICENSE AGREEMENT (this ?Agreement?), is entered into as of August 2, 2022 (the ?Effective Date?), by and between Apollo Capital Management, L.P., a Delaware limited partnership, having a principal place of business at 9 West 57th Street, New York, NY 10019 (?Licensor?), and Apollo Investment Corporation, a Maryland corporation, with offices a

August 2, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 1, 2022 Apollo Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation) (Commi

August 2, 2022 EX-1.1

Fourth Amended and Restated Investment Advisory Agreement between MFIC and Apollo Investment Management, L.P. (previously filed as Exhibit 1.1 to MFIC’s Annual Report on Form 10-K filed on February 21, 2023 and incorporated herein by reference).

Exhibit 1.1 FOURTH AMENDED AND RESTATED INVESTMENT ADVISORY MANAGEMENT AGREEMENT BETWEEN APOLLO INVESTMENT CORPORATION AND APOLLO INVESTMENT MANAGEMENT, L.P. Fourth Amended and Restated Agreement made this 1st day of August 2022, by and between APOLLO INVESTMENT CORPORATION, a Maryland corporation (the ?Corporation?), and APOLLO INVESTMENT MANAGEMENT L.P., a Delaware limited partnership (the ?Advi

August 2, 2022 EX-1.2

Purchase Agreement, dated August 2, 2022

EX-1.2 3 d334976dex12.htm EX-1.2 Exhibit 1.2 SHARE SUBSCRIPTION AGREEMENT by and between APOLLO INVESTMENT CORPORATION and MFIC HOLDINGS, LP Dated as of August 2, 2022 Table of Contents Page ARTICLE I PURCHASE AND SALE 1 Section 1.1 Purchase and Sale 1 Section 1.2 Payment of Purchase Price; Closing 1 Section 1.3 Share Issuance; Deliverables 1 ARTICLE II REPRESENTATIONS AND WARRANTIES OF THE COMPAN

August 2, 2022 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2022, Makes Strategic Announcements, and Increases Quarterly Base Distribution

Exhibit 99.1 Apollo Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2022, Makes Strategic Announcements, and Increases Quarterly Base Distribution Strategic Announcements Reinforce Position as a Pure Play Senior Secured Middle Market BDC(1) ? Established New Industry-Leading Fee Structure to Support Senior Secured Investment Strategy(2) ? MidCap Financial,(3) one of

July 25, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

June 24, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 23, 2022 Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporation) (Commission

June 24, 2022 EX-99.1

1

June 2022 Dear Fellow Shareholders, We would like to begin by saying thank you for your interest in Apollo Investment Corporation (?AINV? or the ?Company? or ?we?).

June 23, 2022 DEF 14A

SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Soliciting Material Pursuant to Rule14a-11(c) or 14a-12 Apollo Investment Corporation (Name of Registrant as Specified in Its Charter) (Name of Person(s) Filing Proxy Statement if other than the Registrant) Payment of Filing Fee (Check the appropriate box): ? No fee required.

June 15, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 15, 2022 (June 10, 2022) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporat

May 19, 2022 EX-99.3

Consent of Independent Auditors*

Exhibit 99.3 CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in the Registration Statement on Form N-2 (No. 333-238518) of Apollo Investment Corporation of our report dated May 19, 2022 relating to the financial statements of Merx Aviation Finance LLC, which appears in this Form 10-K. /s/ PricewaterhouseCoopers Dublin, Ireland May 19, 2022

May 19, 2022 EX-99.2

Consent of Independent Registered Public Accounting Firm*

Exhibit 99.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statement on Form N-2 (No. 333-238518) of Apollo Investment Corporation of our report dated May 19, 2022 relating to the financial statements, senior securities table and the effectiveness of internal control over financial reporting, which appears in this F

May 19, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Registrant as spe

May 19, 2022 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended March 31, 2022

Apollo Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended March 31, 2022 Fiscal Fourth Quarter Financial Results: ?Net investment income per share for the quarter was $0.

May 19, 2022 EX-99.1

Audited Financial Statements of Merx Aviation Finance LLC as of and for the year ended March 31, 2022*

Exhibit 99.1 Merx Aviation Finance, LLC and Subsidiaries Consolidated Financial Statements MERX AVIATION FINANCE, LLC AND SUBSIDIARIES CONSOLIDATED FINANCIAL STATEMENTS Table of Contents Page Report of Independent Auditors 2 Consolidated Statements of Financial Position 4 Consolidated Statements of Operations 5 Consolidated Statements of Other Comprehensive Income 6 Consolidated Statements of Chan

May 19, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 19, 2022 (May 19, 2022) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporatio

March 11, 2022 8-K

Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 8, 2022 Apollo Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814- 00646 52-2439556 (State or other jurisdiction of incorporation) (Commi

March 11, 2022 EX-16.1

Letter to the SEC from PricewaterhouseCoopers LLP, dated March 11, 2022

Exhibit 16.1 March 11, 2022 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We have read the statements made by Apollo Investment Corporation (copy attached), which we understand will be filed with the Securities and Exchange Commission, pursuant to Item 4.01 of Form 8-K of Apollo Investment Corporation dated March 8, 2022. We agree with the statements con

February 7, 2022 SC 13G/A

AINV / Apollo Investment Corp. / THORNBURG INVESTMENT MANAGEMENT INC - NONE Passive Investment

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Apollo Investment Corp (Name of Issuer) Common (Title of Class of Securities) 03761u502 (CUSIP Number) Calendar Year 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whi

February 3, 2022 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter Ended December 31, 2021

Apollo Investment Corporation Reports Financial Results for the Quarter Ended December 31, 2021 Fiscal Third Quarter and Other Recent Highlights: ?Net investment income per share for the quarter was $0.

February 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Regist

February 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 3, 2022 Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporation) (Commiss

November 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 4, 2021 (November 4, 2021) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Inco

November 4, 2021 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2021

Apollo Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2021 Fiscal Second Quarter and Other Recent Highlights: ?Net investment income per share for the quarter was $0.

November 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Regis

August 11, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 11, 2021 (August 10, 2021) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorp

August 5, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 5, 2021 (August 5, 2021) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorpor

August 5, 2021 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2021

Apollo Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2021 Fiscal First Quarter and Other Recent Highlights: ?Net investment income per share for the quarter was $0.

August 5, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Registrant

July 16, 2021 EX-4.1

Fifth Supplemental Indenture, dated as of July 16, 2021, relating to the 4.500% Notes due 2026, between MFIC and U.S. Bank National Association as Trustee (previously filed as Exhibit 4.1 to MFIC’s Current Report on Form 8-K filed on July 16, 2021 and incorporated herein by reference).

Exhibit 4.1 FIFTH SUPPLEMENTAL INDENTURE between APOLLO INVESTMENT CORPORATION and U.S. BANK NATIONAL ASSOCIATION, as Trustee Dated as of July 16, 2021 FIFTH SUPPLEMENTAL INDENTURE THIS FIFTH SUPPLEMENTAL INDENTURE (this ?Fifth Supplemental Indenture?), dated as of July 16, 2021, is between Apollo Investment Corporation, a Maryland corporation (the ?Company?), and U.S. Bank National Association, a

July 16, 2021 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 16, 2021 Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporation) (Commission

July 15, 2021 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 9, 2021 Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporation) (Commission

July 15, 2021 EX-1.1

Underwriting Agreement, dated July 9, 2021, by and among Apollo Investment Corporation, Apollo Investment Management, L.P., Apollo Investment Administration, LLC and BofA Securities, Inc., as representative of the several underwriters named in Schedule II thereto

Exhibit 1.1 EXECUTION VERSION $125,000,000 APOLLO INVESTMENT CORPORATION 4.500% Notes Due 2026 UNDERWRITING AGREEMENT New York, New York July 9, 2021 BofA Securities, Inc. One Bryant Park New York, NY 10036 on behalf of the several Underwriters Ladies and Gentlemen: The undersigned, Apollo Investment Corporation, a Maryland corporation (the ?Company?), Apollo Investment Management, L.P., a Delawar

July 13, 2021 424B2

$125,000,000 4.500% Notes due 2026

Table of Contents Filed Pursuant to Rule 424(b)(2) File No. 333-238518 PROSPECTUS SUPPLEMENT To the Prospectus dated July 17, 2020 $125,000,000 4.500% Notes due 2026 We are offering $125,000,000 in aggregate principal amount of our 4.500% Notes due 2026, which we refer to in this prospectus supplement as the Notes. The Notes will mature on July 16, 2026. We will pay interest on the Notes on Januar

July 9, 2021 424B2

Subject to Completion Preliminary Prospectus Supplement dated July 9, 2021

Table of Contents Filed Pursuant to Rule 424(b)(2) File No. 333-238518 The information in this prospectus supplement is not complete and may be changed. A registration statement relating to these securities has been filed with and declared effective by the Securities and Exchange Commission. This prospectus supplement and the accompanying prospectus are not an offer to sell these securities and ar

July 9, 2021 FWP

APOLLO INVESTMENT CORPORATION 4.500% Notes due 2026 PRICING TERM SHEET July 9, 2021

Filed Pursuant to Rule 433 Issuer Free Writing Prospectus dated July 9, 2021 Relating to Preliminary Prospectus Supplement dated July 9, 2021 and Prospectus dated July 17, 2020 Registration No.

June 22, 2021 DEF 14A

Definitive Proxy Statement

SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Soliciting Material Pursuant to Rule14a-11(c) or 14a-12 Apollo Investment Corporation (Name of Registrant as Specified in Its Charter) (Name of Person(s) Filing Proxy Statement if other than the Registrant) Payment of Filing Fee (Check the appropriate box): ? No fee required.

May 20, 2021 EX-99.2

Consent of Independent Registered Public Accounting Firm*

Exhibit 99.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statement on Form N-2 (No. 333-238518) of Apollo Investment Corporation of our report dated May 20, 2021 relating to the financial statements, senior securities table and the effectiveness of internal control over financial reporting, which appears in this F

May 20, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 20, 2021 (May 20, 2021) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporatio

May 20, 2021 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2021

Apollo Investment Corporation Reports Financial Results for the Quarter Ended March 31, 2021 Fiscal Fourth Quarter and Other Recent Highlights: ?Net investment income per share for the quarter was $0.

May 20, 2021 EX-99.3

Consent of Independent Auditors*

Exhibit 99.3 CONSENT OF INDEPENDENT AUDITORS We hereby consent to the incorporation by reference in the Registration Statement on Form N-2 (No. 333-238518) of Apollo Investment Corporation of our report dated May 18, 2021 relating to the financial statements of Merx Aviation Finance LLC, which appears in this Form 10-K. /s/ PricewaterhouseCoopers Dublin, Ireland May 18, 2021

May 20, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Registrant as spe

May 20, 2021 EX-99.1

Audited Financial Statements of Merx Aviation Finance LLC as of and for the year ended March 31, 2021*

Exhibit 99.1 Merx Aviation Finance, LLC and Subsidiaries Consolidated Financial Statements MERX AVIATION FINANCE, LLC AND SUBSIDIARIES CONSOLIDATED FINANCIAL STATEMENTS Table of Contents Page Report of Independent Auditors 2 Consolidated Statements of Financial Position 3 Consolidated Statements of Operations 4 Consolidated Statements of Other Comprehensive Income 5 Consolidated Statements of Chan

February 9, 2021 SC 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. n/a )* Apollo Investment Corp (Name of Issuer) (Title of Class of Securities) (CUSIP Number) Calendar Year 2

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. n/a )* Apollo Investment Corp (Name of Issuer) Common (Title of Class of Securities) 03761u502 (CUSIP Number) Calendar Year 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

February 4, 2021 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter Ended December 31, 2020

Apollo Investment Corporation Reports Financial Results for the Quarter Ended December 31, 2020 Fiscal Third Quarter and Other Recent Highlights: •Net investment income per share for the quarter was $0.

February 4, 2021 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2020 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Regist

February 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): February 4, 2021 (February 4, 2021) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Inco

December 23, 2020 EX-10.1

Amended and Restated Senior Secured Revolving Credit Agreement, dated as of December 22, 2020 (previously filed as Exhibit 10.1 to MFIC’s Current Report on Form 8-K filed on December 22, 2020 and incorporated herein by reference).

EX-10.1 Exhibit 10.1 Execution Version AMENDED AND RESTATED SENIOR SECURED REVOLVING CREDIT AGREEMENT dated as of December 22, 2020 between APOLLO INVESTMENT CORPORATION The LENDERS Party Hereto JPMORGAN CHASE BANK, N.A. as Administrative Agent TRUIST BANK, BANK OF MONTREAL MUFG UNION BANK, N.A. as Syndication Agents $1,810,000,000 JPMORGAN CHASE BANK, N.A. TRUIST SECURITIES, INC. BMO CAPITAL MARK

December 23, 2020 EX-99.1

Apollo Investment Corporation Amends and Extends Its Senior Secured Revolving Credit Facility Final Maturity Extended to 2025 with Pricing and Advance Rates Remaining Unchanged

EX-99.1 Exhibit 99.1 Apollo Investment Corporation Amends and Extends Its Senior Secured Revolving Credit Facility Final Maturity Extended to 2025 with Pricing and Advance Rates Remaining Unchanged New York, NY – December 23, 2020 – Apollo Investment Corporation (NASDAQ: AINV) (the “Company”) announced today that it has extended the final maturity of its senior secured revolving credit facility (t

December 23, 2020 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits - 8-K

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 22, 2020 Apollo Investment Corporation (Exact name of Registrant as specified in its charter) Maryland 814-00646 52-2439556 (State or other jurisdiction of incorporation)

November 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): November 5, 2020 (November 5, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Inco

November 5, 2020 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2020

Apollo Investment Corporation Reports Financial Results for the Quarter Ended September 30, 2020 Fiscal Second Quarter and Other Recent Highlights: •Net investment income per share for the quarter was $0.

November 5, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Regis

August 12, 2020 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 12, 2020 (August 11, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorp

August 12, 2020 10-Q/A

Quarterly Report - 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A (Amendment No. 1) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exac

August 7, 2020 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2020

Apollo Investment Corporation Reports Financial Results for the Quarter Ended June 30, 2020 Fiscal First Quarter and Other Recent Highlights: •Net investment income per share for the quarter was $0.

August 7, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): August 7, 2020 (August 6, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorpor

August 6, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Registrant

July 30, 2020 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ý Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of

July 17, 2020 CORRESP

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CORRESP Simpson Thacher & Bartlett LLP 900 G STREET, NW WASHINGTON, D.C. 20001 TELEPHONE: +1-202-636-5500 FACSIMILE: +1-202-636-5502 July 17, 2020 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.W. Washington, D.C. 20549 Attn: Christina DiAngelo Fettig and Raymond Be Re: Apollo Investment Corporation Pre-Effective Amendment No. 2 on Form N-2, File No.

July 14, 2020 CORRESP

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CORRESP July 14, 2020 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.

June 23, 2020 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): June 23, 2020 (June 23, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporat

June 23, 2020 EX-99.1

John Hannan

Dear Fellow Shareholders, We are pleased to present you with the annual report for Apollo Investment Corporation (“AINV” or the “Company”) for the fiscal year ended March 31, 2020.

June 16, 2020 DEF 14A

June 16, 2020

DEF 14A SCHEDULE 14A (RULE 14a-101) Information Required in Proxy Statement Schedule 14A Information Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Soliciting Material Pursuant to Rule14a-11(c) or 14a-12 Apollo Investment Corporation (Name of Registrant as Specified in Its Charter) (Name of Person(s) Filing Proxy Statement if other than the Registrant) Payment of Filing Fee (Check the appropriate box): ☒ No fee required.

May 22, 2020 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 21, 2020 (May 20, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporatio

May 22, 2020 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended March 31, 2020

Apollo Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended March 31, 2020 Fiscal Fourth Quarter and Other Recent Highlights: • Net investment income per share for the quarter was $0.

May 21, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): May 21, 2020 (May 21, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorporatio

May 21, 2020 EX-99.1

Audited Financial Statements of Merx Aviation Finance LLC as of and for the year ended March 31, 2020*

Exhibit 99.1 Merx Aviation Finance, LLC and Subsidiaries Consolidated Financial Statements MERX AVIATION FINANCE, LLC AND SUBSIDIARIES CONSOLIDATED FINANCIAL STATEMENTS Table of Contents Page Report of Independent Auditors 2 Consolidated Statements of Financial Position 3 Consolidated Statements of Operations 4 Consolidated Statements of Other Comprehensive Income 5 Consolidated Statements of Chan

May 21, 2020 EX-4.6

Description of MFIC’s Registered Securities (previously filed as Exhibit 4.6 to MFIC’s Annual Report on Form 10-K filed on May 21, 2020 and incorporated herein by reference).

Exhibit 4.6 DESCRIPTION OF APOLLO INVESTMENT CORPORATION’S REGISTERED SECURITIES The following description is based on relevant portions of the Maryland General Corporation Law and on our charter and bylaws. This summary is not necessarily complete, and we refer you to the Maryland General Corporation Law and our charter and bylaws for a more detailed description of the provisions summarized below

May 21, 2020 EX-99.1

Apollo Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended March 31, 2020

Apollo Investment Corporation Reports Financial Results for the Quarter and Fiscal Year Ended March 31, 2020 Fiscal Fourth Quarter and Other Recent Highlights: • Net investment income per share for the quarter was $0.

May 21, 2020 10-K

March 31, 2020

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2020 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 814-00646 APOLLO INVESTMENT CORPORATION (Exact name of Registrant as spe

May 19, 2020 CORRESP

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Simpson Thacher & Bartlett LLP 900 G STREET, N.W. WASHINGTON, D.C. 20001 TELEPHONE: +1-202-636-5500 FACSIMILE: +202-636-5502 Direct Dial Number (202) 636-5592 E-mail Address [email protected] May 19, 2020 Via EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, D.C. 20549 Re: Apollo Investment Corporation – Registration Statement on Fo

March 26, 2020 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 26, 2020 (March 26, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorpor

March 26, 2020 EX-99.1

Apollo Investment Corporation Issues Letter to Stakeholders Providing Business Update

Apollo Investment Corporation Issues Letter to Stakeholders Providing Business Update New York, NY — March 26, 2020 — Apollo Investment Corporation (NASDAQ: AINV) or the “Company,” today issued an open letter to its stakeholders.

March 19, 2020 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 19, 2020 (March 19, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorpor

March 13, 2020 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 13, 2020 (March 13, 2020) Apollo Investment Corporation (Exact Name of Registrant as Specified in Charter) Maryland 814-00646 52-2439556 (State or Other Jurisdiction of Incorpor

February 11, 2020 SC 13G

AIY / Apollo Investment Corp., 6.875% Senior Bonds due 7/15/2043 / THORNBURG INVESTMENT MANAGEMENT INC - NONE Passive Investment

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. n/a )* Apollo Investment Corp (Name of Issuer) Common (Title of Class of Securities) 03761u502 (CUSIP Number) Calendar Year 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to

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