BBSI / Barrett Business Services, Inc. - Документы SEC, Годовой отчет, Доверенное заявление

FORM 10-Q INDEX TO FORM 10-Q PART I – FINANCIAL INFORMATION PART II-OTHER INFORMATION SIGNATURES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

EXHIBIT 99.1

EXHIBIT 99.1 BBSI Reports Strong Second Quarter 2025 Financial Results - Revenues and Gross Billings up 10% to $307.7 Million and $2.23 Billion - - Announces New $100 Million Stock Repurchase Program - VANCOUVER, Washington, August 6, 2025 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for

FORM 8-K Item 2.02. Results of Operations and Financial Condition. Item 7.01. Regulation FD Disclosure. Item 9.01. Financial Statements and Exhibits. SIGNATURES

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 06, 2025 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Comm

FORM 8-K Item 7.01. Regulation FD Disclosure. Item 9.01. Financial Statements and Exhibits. SIGNATURES

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 02, 2025 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commis

EXHIBIT 99.1

EXHIBIT 99.1 BBSI Appoints Joseph S. Clabby as Chairman of the Board Anthony Meeker to Continue as Director VANCOUVER, Washington – June 4, 2025 – Barrett Business Services, Inc. (BBSI) (NASDAQ: BBSI), a leading provider of business management solutions and one of the largest professional employer organizations (PEO) in the U.S., today announced that Joseph S. Clabby has been appointed Chairman of

FORM 8-K Item 5.07. Submission of Matters to a Vote of Security Holders. Item 9.01. Financial Statements and Exhibits. SIGNATURES

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 02, 2025 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commis

FORM 10-Q INDEX TO FORM 10-Q PART I – FINANCIAL INFORMATION PART II-OTHER INFORMATION SIGNATURES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

EXHIBIT 99.1

EXHIBIT 99.1 BBSI Reports Strong First Quarter 2025 Financial Results - Revenues up 10% to $292.6 Million with Gross Billings up 9% to $2.09 Billion - VANCOUVER, Washington, May 7, 2025 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the first quarter ended March 31, 2025. All share and

Regulation FD Disclosure, 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 07, 2025 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commiss

SCHEDULE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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 Ru

SCHEDULE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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 Ru

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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): April 07, 2025 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commi

EXHIBIT 99.1

EXHIBIT 99.1 BBSI Appoints Mark S. Finn to its Board of Directors VANCOUVER, Wash., April 7, 2025 (GLOBE NEWSWIRE) – Barrett Business Services, Inc. (BBSI) (NASDAQ: BBSI), a leading provider of business management solutions and one of the largest professional employer organizations (PEO) in the U.S., has appointed Mark S. Finn to its board of directors, effective April 7, 2025. Finn spent over 30

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 (Amendment No. 1) FORM 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 (Amendment No. 1) FORM 10-K/A ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 Commission File Number 0-21886 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in its charter) Maryland 52-0812977 (State or other jurisdiction

Nonqualified Stock Option Award Agreement between the Registrant and Thomas J. Carley dated July 1, 2016.

EXHIBIT 10.5 AWARD AGREEMENT Under The Barrett Business Services, Inc. 2015 Stock Incentive Plan (amended and restated) NONQUALIFIED STOCK OPTION Corporation: BARRETT BUSINESS SERVICES, INC. 8100 N.E. Parkway Drive, Suite 200 Vancouver, Washington 98662 Participant: Tom Carley 10810 S.W. Tualatin-Sherwood Hwy. Building 1, Unit 2 Tualatin, Oregon 97062 Date: July 1, 2016 Corporation maintains the B

Calculation of Filing Fee Tables Form S-3 (Form Type) BARRETT BUSINESS SERVICES, INC. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

EXHIBIT 107 Calculation of Filing Fee Tables Form S-3 (Form Type) BARRETT BUSINESS SERVICES, INC.

Form of Employee Nonqualified Stock Option Award Agreement for grants to Gerald R. Blotz and Gary E. Kramer effective March 28, 2018, under the 2015 Plan.

EXHIBIT 10.6 FORM OF AWARD AGREEMENT Under The Barrett Business Services, Inc. 2015 Stock Incentive Plan (amended and restated) EMPLOYEE NONQUALIFIED STOCK OPTION This Award Agreement (this "Agreement"), effective as of the Grant Date indicated below, evidences the grant of a Nonqualified Option (the "Option") to Participant under the Barrett Business Services, Inc., 2015 Stock Incentive Plan (the

Description of the Registrant's Capital Stock.

EXHIBIT 4.6 DESCRIPTION OF CAPITAL STOCK OF BARRETT BUSINESS SERVICES, INC. The following is a brief description of the securities of Barrett Business Services, Inc. (the “company,” “we,” “us” and “our”), registered pursuant to Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). As of February 28, 2025, our common stock is the only class of our securities registered

2009 Stock Incentive Plan of the Registrant (the “2009 Plan”).

EXHIBIT 10.1 BARRETT BUSINESS SERVICES, INC. AMENDED AND RESTATED 2009 STOCK INCENTIVE PLAN Effective February 28, 2025 TABLE OF CONTENTS Page ARTICLE 1 ESTABLISHMENT AND PURPOSE 1 1.1 Establishment 1 1.2 Purpose 1 1.3 Prior Plans 1 1.4 Reservation of Right to Amend to Comply with Section 409A 1 ARTICLE 2 DEFINITIONS 1 2.1 Defined Terms 1 2.2 Gender and Number 3 ARTICLE 3 ADMINISTRATION 3 3.1 Gene

Summary of Compensatory Arrangements for Non-Employee Directors of the Registrant effective January 1, 2025.

EXHIBIT 10.11 BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS As of January 1, 2025, compensation arrangements for non-employee directors of Barrett Business Services, Inc. (the "Company"), include an annual retainer of $70,000 ($155,000 for the Chairman of the Board) payable in cash in monthly installments. Committee chairs receive an annual cash re

As filed with the Securities and Exchange Commission on February 28, 2025

As filed with the Securities and Exchange Commission on February 28, 2025 Registration No.

Insider Trading Policy

EXHIBIT 19.1 BARRETT BUSINESS SERVICES, INC. INSIDER TRADING POLICY EFFECTIVE DATE APRIL 29, 2024 This Insider Trading Policy describes the restrictions imposed by Barrett Business Services, Inc. and its subsidiaries (the "Company"), on trading or causing trading in the Company's securities or securities of other publicly traded companies while in possession of certain confidential information. Th

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 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 Commission File Number 0-21886 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in its charter) Maryland 52-0812977 (State or other jurisdiction of (IRS Employer inc

Subsidiaries of the Registrant

EXHIBIT 21 SUBSIDIARIES OF BARRETT BUSINESS SERVICES, INC. At December 31, 2024 Subsidiary Jurisdiction of Formation Associated Insurance Company for Excess Arizona Ecole Insurance Company Arizona BBS I, LLC Oregon

2015 Stock Incentive Plan of the Registrant (the "2015 Plan").

EXHIBIT 10.2 BARRETT BUSINESS SERVICES, INC. AMENDED AND RESTATED 2015 STOCK INCENTIVE PLAN Effective February 28, 2025 TABLE OF CONTENTS Page Article 1 ESTABLISHMENT AND PURPOSE 1 1.1 Establishment 1 1.2 Purpose 1 1.3 Prior Plans 1 Article 2 DEFINITIONS 1 2.1 Defined Terms 1 2.2 Gender and Number 4 Article 3 ADMINISTRATION 4 3.1 General 4 3.2 Composition of the Committee 4 3.3 Authority of the Co

Amended and Restated 2020 Stock Incentive Plan of the Registrant (the "2020 Plan").

EXHIBIT 10.3 BARRETT BUSINESS SERVICES, INC. AMENDED AND RESTATED 2020 STOCK INCENTIVE PLAN Effective February 28, 2025 TABLE OF CONTENTS Page ARTICLE 1 ESTABLISHMENT AND PURPOSE A-1 1.1 Establishment A-1 1.2 Purpose A-1 1.3 Prior Plans A-1 ARTICLE 2 DEFINITIONS A-1 2.1 General A-1 2.2 Number A-4 ARTICLE 3 ADMINISTRATION A-4 3.1 General A-4 3.2 Composition of the Committee A-4 3.3 Authority of the

Form of Employee Nonqualified Stock Option Award Agreement for grants under the 2020 Plan in 2024.

EXHIBIT 10.26 AWARD AGREEMENT under the Barrett Business Services, Inc. Amended and Restated 2020 Stock Incentive Plan EMPLOYEE NONQUALIFIED STOCK OPTION This Award Agreement (this "Agreement"), effective as of the Grant Date stated below, evidences the grant of a Nonqualified Option (the "Option") to Participant under the Barrett Business Services, Inc., Amended and Restated 2020 Stock Incentive

POWER OF ATTORNEY

EXHIBIT 24.1 POWER OF ATTORNEY Each person whose signature appears below designates and appoints GARY E. KRAMER, ANTHONY J. HARRIS, and JAMES R. POTTS, and any of them, true and lawful attorneys‑in‑fact and agents, to sign a registration statement on Form S-3 to be filed by Barrett Business Services, Inc., a Maryland corporation (the “Company”), with the Securities and Exchange Commission (the “SE

BARRETT BUSINESS SERVICES, INC. , AS TRUSTEE INDENTURE DATED AS OF , 202 PROVIDING FOR THE ISSUANCE OF DEBT SECURITIES

EXHIBIT 4.4 BARRETT BUSINESS SERVICES, INC. AND , AS TRUSTEE INDENTURE DATED AS OF , 202 PROVIDING FOR THE ISSUANCE OF DEBT SECURITIES 1 TABLE OF CONTENTS Page ARTICLE 1 DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION 1 1.1 Definitions 1 1.2 Officers' Certificates and Opinions 5 1.3 Form of Documents Delivered to Trustee 5 1.4 Acts of Securityholders 5 1.5 Notices, etc., to Trustee and Com

Regulation FD Disclosure, 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 26, 2025 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Co

BBSI Reports Strong Fourth Quarter and Full Year 2024 Financial Results - Fourth Quarter Revenues up 10% to $304.8 Million With Net Income up 15% to $16.8 Million, or $0.63 per Diluted Share -

EXHIBIT 99.1 BBSI Reports Strong Fourth Quarter and Full Year 2024 Financial Results - Fourth Quarter Revenues up 10% to $304.8 Million With Net Income up 15% to $16.8 Million, or $0.63 per Diluted Share - VANCOUVER, Washington, February 26, 2025 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial resul

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): December 17, 2024 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Co

BBSI Establishes Vice Chairman Role, Appoints Current Board Member Joseph Clabby

EXHIBIT 99.1 BBSI Establishes Vice Chairman Role, Appoints Current Board Member Joseph Clabby VANCOUVER, Wash., Dec. 17, 2024 (GLOBE NEWSWIRE) – Barrett Business Services, Inc. (BBSI) (NASDAQ: BBSI), a leading provider of business management solutions and one of the largest professional employer organizations (PEO) in the U.S., is announcing the establishment of a vice chairman role on its board o

BBSI / Barrett Business Services, Inc. / Mawer Investment Management Ltd. - SCHEDULE 13G Passive Investment

SC 13G 1 mawerbbsi13g3q2024.htm SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) Barrett Business Services, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 068463108 (CUSIP Number) September 30, 2024 (Date of Event which Requires Filing of this Statement) Check the appropri

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVI

Regulation FD Disclosure, 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 06, 2024 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Co

BBSI Reports Strong Third Quarter 2024 Financial Results - Q3 2024 Net income of $19.6 Million, or $0.74 per Diluted Share -

EXHIBIT 99.1 BBSI Reports Strong Third Quarter 2024 Financial Results - Q3 2024 Net income of $19.6 Million, or $0.74 per Diluted Share - VANCOUVER, Washington, November 6, 2024 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the third quarter ended September 30, 2024. All share and per

BBSI / Barrett Business Services, Inc. / Private Capital Management, LLC - AMENDMENT NO. 1 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Barrett Business Services, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 068463108 (CUSIP Number) September 23, 2024 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant to

Charter of the Registrant, as amended, through June 4, 2024

EXHIBIT 3.1 BARRETT BUSINESS SERVICES, INC. AMENDED AND RESTATED CHARTER As Amended Through June 4, 2024 ARTICLE I The name of this corporation (the "Corporation") is Barrett Business Services, Inc. ARTICLE II The purposes for which the Corporation is formed are: (a) To engage generally in the business of supplying temporary and long-term employees to others. (b) To engage in any other business de

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

Regulation FD Disclosure, 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): July 31, 2024 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commis

BBSI Reports Strong Second Quarter 2024 Financial Results and Raises Quarterly Dividend - Q2 2024 Net Income of $16.7 Million, or $0.62 per Diluted Share - - Raises Dividend by 7% to $0.08 per Share -

EXHIBIT 99.1 BBSI Reports Strong Second Quarter 2024 Financial Results and Raises Quarterly Dividend - Q2 2024 Net Income of $16.7 Million, or $0.62 per Diluted Share - - Raises Dividend by 7% to $0.08 per Share - VANCOUVER, Washington, July 31, 2024 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial r

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Other Events, 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): June 03, 2024 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commis

Articles of Amendment to the Charter of the Registrant

BARRETT BUSINESS SERVICES, INC. ARTICLES OF AMENDMENT BARRETT BUSINESS SERVICES, INC., a Maryland corporation (the “Corporation”), hereby certifies to the State Department of Assessments and Taxation of Maryland that: FIRST: Article III, Section (a) of the Charter of the Corporation is hereby amended and restated in its entirety as follows (the “Amendment”): “ARTICLE III (a) The aggregate number o

BBSI Declares Four-for-One Stock Split

EXHIBIT 99.1 BBSI Declares Four-for-One Stock Split VANCOUVER, Wash., June 4, 2024 (GLOBE NEWSWIRE)- Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, today announced that its board of directors has declared a four-for-one split of the Company’s common stock in the form of a stock dividend. Each stockholder of record on J

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

BBSI Reports Strong First Quarter 2024 Financial Results - Revenues of $265.8 Million with Gross Billings up 7% -

EXHIBIT 99.1 BBSI Reports Strong First Quarter 2024 Financial Results - Revenues of $265.8 Million with Gross Billings up 7% - VANCOUVER, Washington, May 1, 2024 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the first quarter ended March 31, 2024. First Quarter 2024 Financial Summary v

Regulation FD Disclosure, 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 01, 2024 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commiss

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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 Ru

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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 Ru

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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 Ru

BBSI Announces Board Approval of Planned Four-For-One Stock Split, Pending Stockholder Approval of an Increase in Authorized Shares of Common Stock

EXHIBIT 99.1 BBSI Announces Board Approval of Planned Four-For-One Stock Split, Pending Stockholder Approval of an Increase in Authorized Shares of Common Stock VANCOUVER, Wash., Apr. 10, 2024 (GLOBE NEWSWIRE) – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, today announced that its board of directors has approved a fu

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): April 10, 2024 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commi

Executive Compensation Recovery Policy.

EXHIBIT 97.1 BARRETT BUSINESS SERVICES, INC. EXECUTIVE COMPENSATION RECOVERY POLICY EFFECTIVE DATE OCTOBER 30, 2023 This policy has been adopted by the Board of Directors of Barrett Business Services, Inc. (“BBSI”). The policy outlines the circumstances under which specified compensation may be recovered from Covered Officers. This policy supersedes in its entirety BBSI’s existing policy adopted i

Subsidiaries of the Registrant

EXHIBIT 21 SUBSIDIARIES OF BARRETT BUSINESS SERVICES, INC. AT DECEMBER 31, 2023 Subsidiary Jurisdiction of Formation Associated Insurance Company for Excess Arizona Ecole Insurance Company Arizona BBS I, LLC Oregon

Summary of Compensatory Arrangements for Non-Employee Directors of the Registrant effective January 1, 2024.

EXHIBIT 10.1 BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS As of January 1, 2024, compensation arrangements for non-employee directors of Barrett Business Services, Inc. (the "Company"), include an annual retainer of $65,000 ($155,000 for the Chairman of the Board) payable in cash in monthly installments. Committee chairs receive an annual cash ret

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 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 Commission File Number 0-21886 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in its charter) Maryland 52-0812977 (State or other jurisdiction of (IRS Employer inc

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

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 28, 2024 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Co

BBSI Reports Strong Fourth Quarter and Full Year 2023 Financial Results - Q4 2023 Net Income of $14.6 Million, or $2.16 per Diluted Share - - Full Year 2023 Net Income of $50.6 Million, or $7.39 per Diluted Share -

EXHIBIT 99.1 BBSI Reports Strong Fourth Quarter and Full Year 2023 Financial Results - Q4 2023 Net Income of $14.6 Million, or $2.16 per Diluted Share - - Full Year 2023 Net Income of $50.6 Million, or $7.39 per Diluted Share - VANCOUVER, Washington, February 28, 2024 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, re

BBSI / Barrett Business Services, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: Barrett Business Services Inc Title of Class of Securities: Common Stock CUSIP Number: 068463108 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule i

BBSI / Barrett Business Services, Inc. / AMERICAN CENTURY INVESTMENT MANAGEMENT INC - SC 13G/A Passive Investment

SC 13G/A 1 barrettbusiness13g-a3.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3) * BARRETT BUSINESS SERVICES, INC. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 068463108 (CUSIP Number) DECEMBER 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appro

BBSI / Barrett Business Services, Inc. / Private Capital Management, LLC Passive Investment

SC 13G 1 bbsi25242sc13g.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Barrett Business Services, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 068463108 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to design

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVI

Regulation FD Disclosure, 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 01, 2023 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Co

BBSI Reports Strong Third Quarter 2023 Financial Results - Q3 2023 Net Income of $18.2 Million, or $2.68 per Diluted Share -

EXHIBIT 99.1 BBSI Reports Strong Third Quarter 2023 Financial Results - Q3 2023 Net Income of $18.2 Million, or $2.68 per Diluted Share - VANCOUVER, Washington, November 1, 2023 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the third quarter ended September 30, 2023. Third Quarter 2023

Fifth Amended and Restated Revolving Line of Credit Note effective June 12, 2023 of the Registrant.

EXHIBIT 4.2 FIFTH AMENDED AND RESTATED REVOLVING LINE OF CREDIT NOTE $50,000,000.00 Los Angeles, California June 12, 2023 This Note amends, restates and supersedes in its entirety, and is given as a replacement for, and not in satisfaction of or as a novation with respect to, that certain Fourth Amended and Restated Revolving Line of Credit Note in the principal amount of Fifty Million Dollars ($5

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

First Amendment, effective as of June 12, 2023, to Third Amended and Restated Credit Agreement between the Registrant and Wells Fargo Bank, National Association.

EXHIBIT 4.1 FIRST AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT THIS AMENDMENT TO CREDIT AGREEMENT (this "Amendment") dated June 12, 2023, is entered into by and between BARRETT BUSINESS SERVICES, INC., a Maryland corporation ("Borrower"), and WELLS FARGO BANK, NATIONAL ASSOCIATION ("Bank"). RECITALS WHEREAS, Borrower is currently indebted to Bank pursuant to the terms and conditions of

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

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 02, 2023 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Comm

BBSI Reports Strong Second Quarter 2023 Financial Results and Announces New $75 Million Stock Repurchase Program - Q2 2023 Net Income of $17.0 Million, or $2.47 per Diluted Share -

EXHIBIT 99.1 BBSI Reports Strong Second Quarter 2023 Financial Results and Announces New $75 Million Stock Repurchase Program - Q2 2023 Net Income of $17.0 Million, or $2.47 per Diluted Share - VANCOUVER, Washington, August 2, 2023 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the seco

As filed with the Securities and Exchange Commission on June 26, 2023

As filed with the Securities and Exchange Commission on June 26, 2023 Registration No.

Power of attorney of certain officers and directors

EXHIBIT 24.1 POWER OF ATTORNEY Each person whose signature appears below designates and appoints GARY E. KRAMER and ANTHONY J. HARRIS, and either of them, true and lawful attorneys-in-fact and agents, to sign a registration statement on Form S-8 to be filed by Barrett Business Services, Inc., a Maryland corporation, with the Securities and Exchange Commission under the Securities Act of 1933, as a

Filing Fee Table.

EXHIBIT 107 CALCULATION OF FILING FEE TABLE Form S-8 (Form Type) BARRETT BUSINESS SERVICES, INC.

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 8, 2023 BARRETT BUSINESS SER

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 8, 2023 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission

Amended and Restated 2020 Stock Incentive Plan. Incorporated by reference to Exhibit 10.1 to the registrant’s Current Report on Form 8-K filed on June 8, 2023

EXHIBIT 10.1 BARRETT BUSINESS SERVICES, INC. AMENDED AND RESTATED 2020 STOCK INCENTIVE PLAN Effective June 5, 2023 TABLE OF CONTENTS Page ARTICLE 1 ESTABLISHMENT AND PURPOSE A-1 1.1 Establishment A-1 1.2 Purpose A-1 1.3 Prior Plans A-1 ARTICLE 2 DEFINITIONS A-1 2.1 General A-1 2.2 Number A-4 ARTICLE 3 ADMINISTRATION A-4 3.1 General A-4 3.2 Composition of the Committee A-4 3.3 Authority of the Comm

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 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

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

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 03, 2023 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commiss

BBSI Reports Strong First Quarter 2023 Financial Results - Q1 2023 Net Income of $0.8 Million, or $0.12 per Diluted Share -

EXHIBIT 99.1 BBSI Reports Strong First Quarter 2023 Financial Results - Q1 2023 Net Income of $0.8 Million, or $0.12 per Diluted Share - VANCOUVER, Washington, May 3, 2023 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the first quarter ended March 31, 2023. First Quarter 2023 Financial

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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 Ru

Subsidiaries of the Registrant

EXHIBIT 21 SUBSIDIARIES OF BARRETT BUSINESS SERVICES, INC. AT DECEMBER 31, 2022 Subsidiary Jurisdiction of Formation Associated Insurance Company for Excess Arizona Ecole Insurance Company Arizona BBS I, LLC Oregon

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 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 Commission File Number 0-21886 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in its charter) Maryland 52-0812977 (State or other jurisdiction of (IRS Employer inc

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

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 01, 2023 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Commi

BBSI Reports Strong Fourth Quarter and Full Year 2022 Financial Results - Q4 2022 Net Income of $11.5 Million, or $1.64 per Diluted Share - - Full Year 2022 Net Income of $47.3 Million, or $6.54 per Diluted Share -

EXHIBIT 99.1 BBSI Reports Strong Fourth Quarter and Full Year 2022 Financial Results - Q4 2022 Net Income of $11.5 Million, or $1.64 per Diluted Share - - Full Year 2022 Net Income of $47.3 Million, or $6.54 per Diluted Share - VANCOUVER, Washington, March 1, 2023 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, report

BBSI / Barrett Business Services, Inc. / Capital World Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3 )* Barrett Business Services, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 068463108 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the approp

BBSI / Barrett Business Services, Inc. / VANGUARD GROUP INC - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: Barrett Business Services Inc. Title of Class of Securities: Common Stock CUSIP Number: 068463108 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d

BBSI / Barrett Business Services, Inc. / AMERICAN CENTURY INVESTMENT MANAGEMENT INC - SC 13G/A Passive Investment

SC 13G/A 1 barrettbusiness13g-a2.htm SC 13G/A United States Securities and Exchange Commission Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* BARRETT BUSINESS SERVICES, INC. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 068463108 (CUSIP Number) DECEMBER 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the approp

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 ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2022 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVI

Regulation FD Disclosure, 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 02, 2022 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (Co

BBSI Reports Strong Third Quarter 2022 Financial Results - Q3 2022 Net Income of $17.4 Million, or $2.45 per Diluted Share - - Raises Full-Year Outlook -

EXHIBIT 99.1 BBSI Reports Strong Third Quarter 2022 Financial Results - Q3 2022 Net Income of $17.4 Million, or $2.45 per Diluted Share - - Raises Full-Year Outlook - VANCOUVER, Washington, November 2, 2022 ? Barrett Business Services, Inc. (?BBSI? or the ?Company?) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the third quarter ended September

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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): September 16, 2022 BARRETT BUSINESS SERVICES, INC. (Exact name of Registrant as Specified in Its Charter) Maryland 0-21886 52-0812977 (State or Other Jurisdiction of Incorporation) (C

BBSI Appoints Joseph S. Clabby to its Board of Directors

Exhibit 99.1 BBSI Appoints Joseph S. Clabby to its Board of Directors VANCOUVER, Washington ? September 19, 2022 ? The board of directors of Barrett Business Services, Inc. (BBSI) (NASDAQ: BBSI), a leading provider of business management solutions, has appointed Joseph S. Clabby as a director effective September 16. His appointment expands the board to nine members. Mr. Clabby recently retired fro

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 ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2022 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

BBSI Reports Strong Second Quarter 2022 Financial Results - Q2 2022 Net Income of $18.0 Million, or $2.48 per Diluted Share - - Raises Full-Year Outlook -

Exhibit 99.1 BBSI Reports Strong Second Quarter 2022 Financial Results - Q2 2022 Net Income of $18.0 Million, or $2.48 per Diluted Share - - Raises Full-Year Outlook - VANCOUVER, Washington, August 3, 2022 ? Barrett Business Services, Inc. (?BBSI? or the ?Company?) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the second quarter ended June 30,

Regulation FD Disclosure, 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 3, 2022 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commissio

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): June 7, 2022 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission

! 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 ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2022 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVI

BBSI Reports Strong First Quarter 2022 Financial Results and Raises Full-Year Outlook - Q1 2022 Net Income of $0.3 Million, or $0.04 per Diluted Share -

Exhibit 99.1 BBSI Reports Strong First Quarter 2022 Financial Results and Raises Full-Year Outlook - Q1 2022 Net Income of $0.3 Million, or $0.04 per Diluted Share - VANCOUVER, Washington, May 4, 2022 ? Barrett Business Services, Inc. (?BBSI? or the ?Company?) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the first quarter ended March 31, 2022.

Regulation FD Disclosure, 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 4, 2022 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission F

f UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

f UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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

Subsidiaries of the Registrant.

EXHIBIT 21 SUBSIDIARIES OF BARRETT BUSINESS SERVICES, INC. AT DECEMBER 31, 2021 Subsidiary Jurisdiction of Formation Associated Insurance Company for Excess Arizona Ecole Insurance Company Arizona BBS I, LLC Oregon

Fourth Amended and Restated Revolving Line of Credit Note dated March 1, 2022 of the Registrant.

EXHIBIT 4.4 FOURTH AMENDED AND RESTATED REVOLVING LINE OF CREDIT NOTE $50,000,000.00 Portland, Oregon March 1, 2022 This Note amends, restates and supersedes in its entirety, and is given as a replacement for, and not in satisfaction of or as a novation with respect to, that certain Third Amended and Restated Revolving Line of Credit Note in the principal amount of Thirty Three Million Dollars ($3

Third Amended and Restated Credit Agreement between the Registrant and Wells Fargo Bank, National Association (“Wells Fargo”), dated as of March 1, 2022.

EXHIBIT 4.1 THIRD AMENDED AND RESTATED CREDIT AGREEMENT THIS THIRD AMENDED AND RESTATED CREDIT AGREEMENT (this "Agreement") dated March 1, 2022, is by and between BARRETT BUSINESS SERVICES, INC., a Maryland corporation ("Borrower"), and WELLS FARGO BANK, NATIONAL ASSOCIATION ("Bank"). This Agreement amends, restates and supersedes in its entirety, and is given as a replacement for, and not in sati

Amended and Restated Security Agreement: Business Assets, dated as of March 1, 2022, between the Registrant and Wells Fargo.

EXHIBIT 4.2 SECURITY AGREEMENT: BUSINESS ASSETS This Agreement amends and restates in its entirety, and is given as a replacement for, and not in satisfaction of or as a novation with respect to, that certain Amended and Restated Security Agreement: Business Assets dated June 20, 2018 executed by Debtor in favor of Bank (the ?Original Security Agreement?). It is the intent of the parties hereto th

Summary of Compensatory Arrangements for Non-Employee Directors of the Registrant effective January 1, 2022.

EXHIBIT 10.18 BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS As of January 1, 2022, compensation arrangements for non-employee directors of Barrett Business Services, Inc. (the "Company"), include an annual retainer of $65,000 ($135,000 for the Chairman of the Board) payable in cash in monthly installments. Committee chairs receive an annual cash re

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 ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 Commission File Number 0-21886 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in its charter) Maryland 52-0812977 (State or other jurisdiction of (IRS Employer inc

Regulation FD Disclosure, 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): March 2, 2022 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission

BBSI Reports Fourth Quarter and Full Year 2021 Financial Results - Q4 2021 Net Income of $10.6 Million, or $1.40 per Diluted Share - - Full Year 2021 Net Income of $38.1 Million, or $5.00 per Diluted Share - - Board of Directors Authorizes New $75 Mi

Exhibit 99.1 BBSI Reports Fourth Quarter and Full Year 2021 Financial Results - Q4 2021 Net Income of $10.6 Million, or $1.40 per Diluted Share - - Full Year 2021 Net Income of $38.1 Million, or $5.00 per Diluted Share - - Board of Directors Authorizes New $75 Million Share Repurchase Program Over Two Years - VANCOUVER, Washington, March 2, 2022 ? Barrett Business Services, Inc. (?BBSI? or the ?Co

BBSI / Barrett Business Services, Inc. / Capital World Investors - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Barrett Business Services, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 068463108 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

BBSI / Barrett Business Services, Inc. / AMERICAN CENTURY INVESTMENT MANAGEMENT INC - SC 13G/A Passive Investment

United States Securities and Exchange Commission Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* BARRETT BUSINESS SERVICES, INC. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 068463108 (CUSIP Number) DECEMBER 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

November 17, 2021

November 17, 2021 VIA EDGAR United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

As filed with the Securities and Exchange Commission on November 3, 2021

As filed with the Securities and Exchange Commission on November 3, 2021 Registration No.

Form of Indenture

EXHIBIT 4.3 BARRETT BUSINESS SERVICES, INC. and , as Trustee Indenture Dated as of , 202 Providing for the Issuance of Debt Securities Table of Contents Page ARTICLE 1 DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION 1 1.1 Definitions 1 1.2 Officers' Certificates and Opinions 10 1.3 Form of Documents Delivered to Trustee 10 1.4 Acts of Securityholders 11 1.5 Notices, etc., to Trustee and Co

Power of Attorney

Exhibit 24.1 POWER OF ATTORNEY Each person whose signature appears below designates and appoints GARY E. KRAMER, ANTHONY J. HARRIS, and JAMES R. POTTS, and any of them, true and lawful attorneys?in?fact and agents, to sign a registration statement on Form S-3 to be filed by Barrett Business Services, Inc., a Maryland corporation (the ?Company?), with the Securities and Exchange Commission (the ?SE

- 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 ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SER

Financial Statements and Exhibits, Results of Operations and Financial Condition, Regulation FD Disclosure

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, 2021 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commiss

BBSI Reports Strong Third Quarter 2021 Financial Results and Raises Full-Year Gross Billings Outlook - Q3 Net Revenues Increase 9% to $247 Million with Gross Billings Up 12% -

Exhibit 99-1 BBSI Reports Strong Third Quarter 2021 Financial Results and Raises Full-Year Gross Billings Outlook - Q3 Net Revenues Increase 9% to $247 Million with Gross Billings Up 12% - VANCOUVER, Washington, November 3, 2021 ? Barrett Business Services, Inc.

Financial Statements and Exhibits, Results of Operations and Financial Condition, Regulation FD Disclosure

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, 2021 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State of incorporation) (Commission File Number) (IRS Em

- 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 ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES

Form of Performance Share Award Agreement under 2020 Stock Incentive Plan.

EXHIBIT 10.1 AWARD AGREEMENT Under The Barrett Business Services, Inc. 2020 Stock Incentive Plan PERFORMANCE SHARE AWARD (Executive Officer) This Performance Share Award Agreement (this "Agreement") , effective as of the date indicated below, evidences the grant of Performance Shares ("Performance Shares") to Participant under Article 10 of the Barrett Business Services, Inc., 2020 Stock Incentive

Form of Indemnification Agreement with each outside director of Barrett Business Services, Inc.

EXHIBIT 10.2 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (?Agreement?) is made and entered into as of the day of , 20, by and between Barrett Business Services, Inc., a Maryland corporation (the ?Company?), and (?Indemnitee?). WHEREAS, Indemnitee is currently serving as a director of the Company and may, therefore, be subjected to claims, suits or proceedings arising as a result of su

BBSI Reports Strong Second Quarter 2021 Financial Results and Raises Full-Year Outlook - Q2 Net Revenues Increase 16% to $233 Million with Gross Billings Up 17% -

Exhibit 99.1 BBSI Reports Strong Second Quarter 2021 Financial Results and Raises Full-Year Outlook - Q2 Net Revenues Increase 16% to $233 Million with Gross Billings Up 17% - VANCOUVER, Washington, August 4, 2021 ? Barrett Business Services, Inc. (?BBSI? or the ?Company?) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the second quarter ended J

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): June 2, 2021 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State of incorporation) (Commission File Number) (IRS Empl

BBSI Reports Strong First Quarter 2021 Financial Results and Raises Full-Year Outlook

EXHIBIT 99.1 BBSI Reports Strong First Quarter 2021 Financial Results and Raises Full-Year Outlook - Q1 Net Revenues of $218.4 Million with Gross Billings Up 2% - VANCOUVER, Washington, May 5, 2021 ? Barrett Business Services, Inc. (?BBSI? or the ?Company?) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the first quarter ended March 31, 2021. Fi

Quarterly Report - 10-Q

- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2021 ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICE

Financial Statements and Exhibits, Results of Operations and Financial Condition, Regulation FD Disclosure

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 5, 2021 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission F

- DEF 14A

f UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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

BBSI Appoints Carla A. Moradi to its Board of Directors

EXHIBIT 99.1 BBSI Appoints Carla A. Moradi to its Board of Directors VANCOUVER, Washington ? April 9, 2021 ? The board of directors of Barrett Business Services, Inc. (BBSI) (NASDAQ: BBSI), a leading provider of business management solutions, has appointed technology and operations executive Carla A. Moradi as an independent director effective April 7th. Her appointment expands the board to nine m

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Regulation FD Disclosure

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 7, 2021 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission

Amended Death Benefit Agreement entered into by the Registrant and Gerald L. Blotz effective October 30, 2020.*

EXHIBIT 10.31 AMENDED DEATH BENEFIT AGREEMENT Employee: Gerald Blotz Employer: Barrett Business Services, Inc., a Maryland corporation Death Benefit: $1,000,000, paid in one lump sum as set forth below Effective Date: October 30, 2020 RECITALS A. Employee has been employed by Employer and rendered valuable services to Employer. B. In consideration for Employee's past, current, and future service t

Annual Report - 10-K

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 December 31, 2020 Commission File Number 0-21886 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in its charter) Maryland 52-0812977 (State or other jurisdiction of (IRS Employer inc

Death Benefit Agreement entered into by the Registrant and James Potts effective October 30, 2020.*

EXHIBIT 10.34 DEATH BENEFIT AGREEMENT Employee: James Potts Employer: Barrett Business Services, Inc., a Maryland corporation Death Benefit: $1,000,000, paid in one lump sum as set forth below Effective Date: October 30, 2020 RECITALS A. Employee has been employed by Employer and rendered valuable services to Employer. B. In consideration for Employee's past, current, and future service to Employe

Employment Agreement between the Registrant and James Potts, dated August 14, 2020.*

EXHIBIT 10.30 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (this "Agreement") is entered into this 14th day of August, 2020, by and between Barrett Business Services, Inc. ("Company"), and James Potts ("Employee") (collectively, the "Parties"), and is effective as of September 16, 2020 (the "Effective Date"). RECITALS A. Company desires to employ Employee, and Employee desires to be employed by

Subsidiaries of the Registrant.

EXHIBIT 21 SUBSIDIARIES OF BARRETT BUSINESS SERVICES, INC. AT DECEMBER 31, 2020 Subsidiary Jurisdiction of Formation Associated Insurance Company for Excess Arizona Ecole Insurance Company Arizona BBS I, LLC Oregon

Financial Statements and Exhibits, Results of Operations and Financial Condition, Regulation FD Disclosure

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 3, 2021 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission

BBSI Reports Fourth Quarter and Full Year 2020 Financial Results - Q4 2020 Net Income of $7.2 Million, or $0.93 per Diluted Share - - Full Year 2020 Net Income of $33.8 Million, or $4.39 per Diluted Share -

Exhibit 99.1 BBSI Reports Fourth Quarter and Full Year 2020 Financial Results - Q4 2020 Net Income of $7.2 Million, or $0.93 per Diluted Share - - Full Year 2020 Net Income of $33.8 Million, or $4.39 per Diluted Share - VANCOUVER, Washington, March 3, 2021 ? Barrett Business Services, Inc. (?BBSI? or the ?Company?) (NASDAQ: BBSI), a leading provider of business management solutions, reported finan

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* Barrett Business Services, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 068463108 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

United States Securities and Exchange Commission Washington, D.C. 20549

United States Securities and Exchange Commission Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* BARRETT BUSINESS SERVICES, INC. (Name of Issuer) COMMON STOCK (Title of Class of Securities) 068463108 (CUSIP Number) DECEMBER 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whi

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2)* Name of issuer: Barrett Business Services Inc Title of Class of Securities: Common Stock CUSIP Number: 068463108 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule i

- SC 14N

SC 14N UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14N UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )* BARRETT BUSINESS SERVICES, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 068463108 (CUSIP Number) ☐ Solicitation Pursuant to § 240.14a-2(b)(7) ☐ Solicitation Pursuant to § 240.14a-2(b)(8) ☐ Notice of Submission of a Nominee or N

BBSI / Barrett Business Services, Inc. / JPMORGAN CHASE & CO - FILING BARRETT BUSINESS SERVICES, INC. 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. 08)* BARRETT BUSINESS SERVICES, INC. (Name of Issuer) Common Stock, Par Value $0.01 Per Share (Title of Class of Securities) 068463108 (CUSIP Number) November 30, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVI

Summary of Compensation Arrangements for Non-Employee Directors of the Registrant effective July 1, 2020.

EXHIBIT 10.4 BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS As of July 1, 2020, compensation arrangements for non-employee directors of Barrett Business Services, Inc. (the "Company"), continue to include an annual retainer of $60,000 ($100,000 for the Chairman of the Board) payable in cash in monthly installments. Committee chairs receive an annual

Form of Restricted Stock Units Award Agreement for Executive Officers under the 2020 Plan

EXHIBIT 10.1 AWARD AGREEMENT Under The Barrett Business Services, Inc. 2020 Stock Incentive Plan EMPLOYEE RESTRICTED STOCK UNITS (Executive Officer) This Employee Restricted Stock Units Award Agreement (this "Agreement"), effective as of the date indicated below, evidences the grant of Restricted Stock Units ("RSUs") to Participant under Article 9 of the Barrett Business Services, Inc., 2020 Stock

Form of Restricted Stock Units Award Agreement under Nonqualified Deferred Compensation Plan for grants beginning July 1, 2020

EXHIBIT 10.3 AWARD AGREEMENT Under The Barrett Business Services, Inc. 2020 Stock Incentive Plan RESTRICTED STOCK UNITS (Deferred Compensation Match) This Restricted Stock Units Award Agreement (this "Agreement"), effective as of the date indicated below, evidences the award of Restricted Stock Units ("RSUs") to Participant under Article 9 of the Barrett Business Services, Inc., 2020 Stock Incenti

BBSI Reports Third Quarter 2020 Financial Results and Raises Full-Year Outlook - Third Quarter Results Exceed Management Expectations, Diluted EPS for 2020 Now Expected to be $4.10 -

EXHIBIT 99.1 BBSI Reports Third Quarter 2020 Financial Results and Raises Full-Year Outlook - Third Quarter Results Exceed Management Expectations, Diluted EPS for 2020 Now Expected to be $4.10 - VANCOUVER, Washington, November 3, 2020 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the

Form of Restricted Stock Units Award Agreement for Non-Employee Directors under the 2020 Plan

EXHIBIT 10.2 AWARD AGREEMENT Under The Barrett Business Services, Inc. 2020 Stock Incentive Plan NON-EMPLOYEE DIRECTOR RESTRICTED STOCK UNITS This Non-Employee Director Restricted Stock Units Award Agreement (this "Agreement"), effective as of the date indicated below, evidences the grant of Restricted Stock Units ("RSUs") to Participant under Article 9 of the Barrett Business Services, Inc., 2020

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 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 3, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commiss

Second Amendment, dated as of September 25, 2020, to Second Amended and Restated Credit Agreement between the Registrant and Wells Fargo Bank, National Association.

Exhibit 4.1 SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT THIS SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") dated September 25, 2020, is entered into by and between BARRETT BUSINESS SERVICES, INC., a Maryland corporation ("Borrower"), and WELLS FARGO BANK, NATIONAL ASSOCIATION ("Bank"). RECITALS WHEREAS, Borrower is currently indebted to Ba

Financial Statements and Exhibits, Other Events - FORM 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): September 30, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commi

Financial Statements and Exhibits, Other Events - FORM 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): September 16, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commi

BBSI APPOINTS JAMES R. POTTS AS EXECUTIVE VICE PRESIDENT AND GENERAL COUNSEL

Exhibit 99.1 BBSI APPOINTS JAMES R. POTTS AS EXECUTIVE VICE PRESIDENT AND GENERAL COUNSEL VANCOUVER, Washington – September 16, 2020 – Barrett Business Services, Inc. (BBSI) (NASDAQ: BBSI), a leading provider of business management solutions, has appointed James R. Potts as Executive Vice President and General Counsel, a newly created position. He will be reporting to BBSI's Chief Executive Office

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

BBSI Reports Second Quarter 2020 Financial Results - Continues to Navigate COVID-19 From a Position of Strength, Reporting a 38% Sequential Quarter Increase in Unrestricted Cash and Investments to $129.7 Million and $11.5 Million in Net Income - - Re

EXHIBIT 99.1 BBSI Reports Second Quarter 2020 Financial Results - Continues to Navigate COVID-19 From a Position of Strength, Reporting a 38% Sequential Quarter Increase in Unrestricted Cash and Investments to $129.7 Million and $11.5 Million in Net Income - - Reinstates 2020 Financial Outlook, Expecting Diluted EPS of $3.70 - VANCOUVER, Washington, August 04, 2020 – Barrett Business Services, Inc

Amended Death Benefit Agreement entered into by the Registrant and Gary Kramer effective June 30, 2020

EXHIBIT 10.8 AMENDED DEATH BENEFIT AGREEMENT Employee: Gary Kramer Employer: Barrett Business Services, Inc., a Maryland corporation Death Benefit: $2,000,000, paid in one lump sum as set forth below Effective Date: June 30, 2020 RECITALS A. Employee has been employed by Employer and rendered valuable services to Employer. B. In consideration for Employee's past, current, and future service to Emp

Regulation FD Disclosure, 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 4, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commissio

Death Benefit Agreement entered into by the Registrant and Anthony Harris effective June 30, 2020

EXHIBIT 10.7 DEATH BENEFIT AGREEMENT Employee: Anthony Harris Employer: Barrett Business Services, Inc., a Maryland corporation Death Benefit: $1,000,000, paid in one lump sum as set forth below Effective Date: June 30, 2020 RECITALS A. Employee has been employed by Employer and rendered valuable services to Employer. B. In consideration for Employee's past, current, and future service to Employer

Bylaws of the Registrant, as amended through May 27, 2020

EXHIBIT 3.1 BARRETT BUSINESS SERVICES, INC. BYLAWS As Amended Through May 27, 2020 ARTICLE I STOCKHOLDERS Section 1.1Annual Meeting. The Annual Meeting of the stockholders shall be held in May or June of each year on the date and at the time established by the board of directors for the purpose of electing directors and for the transaction of such other business as may come before the meeting. The

Separation and Release Agreement between the Registrant and Heather Gould dated as of April 3, 2020.

EXHIBIT 10.1 SEPARATION AND RELEASE AGREEMENT THIS CONFIDENTIAL SEPARATION AND RELEASE AGREEMENT ("Agreement") is made by and among Barrett Business Services, Inc. (“BBSI"), and Heather Gould, an individual residing at [ • ] ("Employee"). "BBSI" and "Employee" are collectively referred to as the "Parties." The Parties agree as follows: 1.Background. Employee is employed as BBSI’s Chief Strategy Of

3.1 Bylaws of Barrett Business Services, Inc., as amended through May 27, 2020.

Exhibit 3.1 BARRETT BUSINESS SERVICES, INC. BYLAWS As Amended Through May 27, 2020 ARTICLE I STOCKHOLDERS Section 1.1 Annual Meeting. The Annual Meeting of the stockholders shall be held in May or June of each year on the date and at the time established by the board of directors for the purpose of electing directors and for the transaction of such other business as may come before the meeting. Th

- FORM S-8

As filed with the Securities and Exchange Commission on June 26, 2020 Registration No.

Power of attorney of certain officers and directors.

EXHIBIT 24.1 POWER OF ATTORNEY Each person whose signature appears below designates and appoints GARY E. KRAMER and ANTHONY J. HARRIS, and either of them, true and lawful attorneys-in-fact and agents, to sign a registration statement on Form S-8 to be filed by Barrett Business Services, Inc., a Maryland corporation, with the Securities and Exchange Commission under the Securities Act of 1933, as a

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): June 26, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission

Description of the Registrant's Capital Stock

Exhibit 4.1 DESCRIPTION OF CAPITAL STOCK OF BARRETT BUSINESS SERVICES, INC. The following is a brief description of the securities of Barrett Business Services, Inc. (the “company,” “we,” “us” and “our”), registered pursuant to Section 12 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). As of June 26, 2020, our common stock is the only class of our securities registered und

2020 Stock Incentive Plan of the Registrant (the "2020 Plan"). Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on June 2, 2020.*

EXHIBIT 10.1 BARRETT BUSINESS SERVICES, INC. 2020 STOCK INCENTIVE PLAN Effective May 27, 2020 Table of Contents Page Article 1 ESTABLISHMENT AND PURPOSE 1 1.1 Establishment 1 1.2 Purpose 1 1.3 Prior Plans 1 Article 2 DEFINITIONS 1 2.1 Defined Terms 1 2.2 Number 6 Article 3 ADMINISTRATION 6 3.1 General 6 3.2 Composition of the Committee 6 3.3 Authority of the Committee 6 3.4 Action by the Committee

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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): May 27, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State of incorporation) (Commission File Number) (IRS Empl

Bylaws of Barrett Business Services, Inc., as amended effective May 27, 2020 (marked to show revisions)

EXHIBIT 3.1 BARRETT BUSINESS SERVICES, INC. BYLAWS As Amended Through May 27, 2020 ARTICLE I STOCKHOLDERS Section 1.1 Annual Meeting. The Annual Meeting of the stockholders shall be held in May or June of each year on the date and at the time established by the board of directors for the purpose of electing directors and for the transaction of such other business as may come before the meeting. Th

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): May 15, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission

First Amendment, dated as of May 15, 2020, to Second Amended and Restated Credit Agreement between the Registrant and Wells Fargo Bank, National Association.

EXHIBIT 4.1 FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT THIS FIRST AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") dated May 15, 2020, is entered into by and between BARRETT BUSINESS SERVICES, INC., a Maryland corporation ("Borrower"), and WELLS FARGO BANK, NATIONAL ASSOCIATION ("Bank"). RECITALS WHEREAS, Borrower is currently indebted to Bank pursu

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2020 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

BBSI Reports First Quarter 2020 Financial Results - First Quarter Gross Billings up 6%; Maintains $0.30 Per Share Quarterly Dividend -

Exhibit 99.1 BBSI Reports First Quarter 2020 Financial Results - First Quarter Gross Billings up 6%; Maintains $0.30 Per Share Quarterly Dividend - VANCOUVER, Washington, May 05, 2020 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the first quarter ended March 31, 2020. First Quarter 20

Regulation FD Disclosure, 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 5, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commission F

Employment Agreement between the Registrant and Anthony Harris, dated April 22, 2020

EXHIBIT 10.4 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (this "Agreement") is entered into this 22nd day of April, 2020, by and between Barrett Business Services, Inc. ("Company"), and Anthony Harris ("Employee") (collectively, the "Parties"), and is effective as of March 5, 2020 (the "Effective Date"). RECITALS A. Company desires to employ Employee, and Employee desires to be employed by Comp

- DEF 14A

f UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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

Employment Agreement between the Registrant and Gerald Blotz, dated April 22, 2020

EXHIBIT 10.3 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (this "Agreement") is entered into this 22nd day of April, 2020, by and between Barrett Business Services, Inc. ("Company"), and Gerald Blotz ("Employee") (collectively, the "Parties"), and is effective as of March 5, 2020 (the "Effective Date"). RECITALS A. Company desires to employ Employee, and Employee desires to be employed by Compan

Separation and Release Agreement between the Company and Michael Elich dated April 22, 2020

EXHIBIT 10.1 SEPARATION AND RELEASE AGREEMENT THIS SEPARATION AND RELEASE AGREEMENT (“Agreement”) is made by and among Barrett Business Services, Inc. (“BBSI”), and Michael L. Elich, an individual residing at [●], WA 98607 (“Employee”). “BBSI” and "Employee" are collectively referred to as the “Parties.” The Parties agree as follows: 1. Background. Employee was formerly employed as BBSI’s Presiden

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

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 22, 2020 Barrett Business Services, Inc. (Exact name of registrant as specified in its charter) Maryland (State or other jurisdiction of incorporation) 0-21886 52-0812977 (Commission File Num

Employment Agreement between the Registrant and Gary Kramer Jr., dated April 22, 2020

EXHIBIT 10.2 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (this "Agreement") is entered into this 22nd day of April, 2020, by and between Barrett Business Services, Inc. ("Company"), and Gary Kramer Jr. ("Employee") (collectively, the "Parties"), and is effective as of March 5, 2020 (the "Effective Date"). RECITALS A. Company desires to employ Employee, and Employee desires to be employed by Com

BBSI / Barrett Business Services, Inc. PRE 14A - - PRE 14A

f UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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

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

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 3, 2020 Barrett Business Services, Inc. (Exact name of registrant as specified in its charter) Maryland (State or other jurisdiction of incorporation) 0-21886 52-0812977 (Commission File Numb

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): March 5, 2020 BARRETT BUSINESS SERVICES, INC.

BBSI Announces Executive Management Changes

Exhibit 99.1 BBSI Announces Executive Management Changes VANCOUVER, Washington – March 5, 2020 – Barrett Business Services, Inc. (BBSI) (NASDAQ: BBSI), a leading provider of business management solutions, announced the retirement of Michael Elich as Chief Executive Officer. Mr. Elich is also retiring from the company’s Board of Directors. Mr. Elich’s retirement is aligned with the Board’s manageme

BBSI / Barrett Business Services, Inc. 10-K - Annual Report - 10-K

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 December 31, 2019 Commission File Number 0-21886 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in its charter) Maryland 52-0812977 (State or other jurisdiction of (IRS Employer inc

Subsidiaries of the Registrant.

EXHIBIT 21 SUBSIDIARIES OF BARRETT BUSINESS SERVICES, INC. AT DECEMBER 31, 2019 Subsidiary Jurisdiction of Formation Associated Insurance Company for Excess Arizona Ecole Insurance Company Arizona BBS I, LLC Oregon

Description of the Registrant's Capital Stock.

Exhibit 4.12 DESCRIPTION OF THE REGISTRANT’S CAPITAL STOCK The following is a brief description of the securities of Barrett Business Services, Inc. (the “company,” “we,” “us” and “our”), registered pursuant to Section 12 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). As of December 31, 2019, and March 3, 2020, our common stock is the only class of our securities register

Regulation FD Disclosure

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 28, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commis

BBSI Reports Fourth Quarter and Full Year 2019 Financial Results - Full Year Net Income up 27% to a Record $48.3 Million, or $6.27 per Diluted Share -

Exhibit 99.1 BBSI Reports Fourth Quarter and Full Year 2019 Financial Results - Full Year Net Income up 27% to a Record $48.3 Million, or $6.27 per Diluted Share - VANCOUVER, Washington, February 25, 2020 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the fourth quarter and full year en

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 25, 2020 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commis

BBSI / Barrett Business Services, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: Barrett Business Services Inc Title of Class of Securities: Common Stock CUSIP Number: 068463108 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule i

BBSI / Barrett Business Services, Inc. PX14A6G - - PX14A6G

PX14A6G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 NOTICE OF EXEMPT SOLICITATION Submitted Pursuant to Rule 14a-6(g) 1. Name of the registrant: Barrett Business Services Inc. 2. Name of persons relying on exemption: Wayne King 3. Address of persons relying on exemption: C/O Evan Stone and Christopher J. Babcock, Foley & Lardner LLP 2021 McKinney Avenue, Suite 1600 Dall

BBSI / Barrett Business Services, Inc. DEFA14A - - DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6

BBSI / Barrett Business Services, Inc. / JP Morgan Chase & Co - FILING BARRETT BUSINESS SERVICES, INC. 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. 07)* BARRETT BUSINESS SERVICES, INC. (Name of Issuer) Common Stock, Par Value $0.01 Per Share (Title of Class of Securities) 068463108 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate

BBSI / Barrett Business Services, Inc. PX14A6G - - PX14A6G

PX14A6G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 NOTICE OF EXEMPT SOLICITATION Submitted Pursuant to Rule 14a-6(g) 1. Name of the registrant: Barrett Business Services Inc. 2. Name of persons relying on exemption: Wayne King 3. Address of persons relying on exemption: C/O Evan Stone and Christopher J. Babcock, Foley & Lardner LLP 2021 McKinney Avenue, Suite 1600 Dall

Regulation FD Disclosure

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 8, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commiss

BBSI / Barrett Business Services, Inc. 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVI

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 5, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commiss

BBSI Reports Record Third Quarter Earnings; Raises Full-Year Outlook - Third Quarter Net Income up 31% to $25 Million, or $3.24 per Diluted Share – - Raises Full-Year Earnings Outlook 12% to $6.05 per Diluted Share -

Exhibit 99.1 BBSI Reports Record Third Quarter Earnings; Raises Full-Year Outlook - Third Quarter Net Income up 31% to $25 Million, or $3.24 per Diluted Share – - Raises Full-Year Earnings Outlook 12% to $6.05 per Diluted Share - VANCOUVER, Washington, November 05, 2019 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions,

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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): October 17, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commiss

BBSI Appoints Diane L. Dewbrey to its Board of Directors

Exhibit 99.1 BBSI Appoints Diane L. Dewbrey to its Board of Directors VANCOUVER, Washington – October 23, 2019 – The board of directors of Barrett Business Services, Inc. (BBSI) (NASDAQ: BBSI), a leading provider of business management solutions, has appointed Diane L. Dewbrey as a director effective October 17, 2019. Her appointment expands the board to eight members. Currently, Ms. Dewbrey serve

Regulation FD Disclosure

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 6, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commissio

BBSI Reports Second Quarter 2019 Financial Results - Net Income up 24% to $13.9 Million, or $1.81 per Diluted Share - - Authorizes $50 Million Share Repurchase Program and Raises Quarterly Cash Dividend by 20% to $0.30 per Share -

Exhibit 99.1 BBSI Reports Second Quarter 2019 Financial Results - Net Income up 24% to $13.9 Million, or $1.81 per Diluted Share - - Authorizes $50 Million Share Repurchase Program and Raises Quarterly Cash Dividend by 20% to $0.30 per Share - VANCOUVER, Washington, August 6, 2019 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management

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 6, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commissio

BBSI / Barrett Business Services, Inc. 10-Q - Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

Form of Non-Employee Director Restricted Stock Units Award Agreement for awards granted in 2019 and thereafter under the Registrant's 2015 Stock Incentive Plan.

EXHIBIT 10.1 AWARD AGREEMENT Under The Barrett Business Services, Inc. 2015 Stock Incentive Plan NON-EMPLOYEE DIRECTOR RESTRICTED STOCK UNITS This Non-Employee Director Restricted Stock Units Award Agreement (this "Agreement"), effective as of the date indicated below, evidences the grant of Restricted Units ("RSUs") to Participant under Article 9 of the Barrett Business Services, Inc., 2015 Stock

Indemnification Agreement between the Registrant and Michael L. Elich dated as of July 15, 2019.

EXHIBIT 10.4 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (“Agreement”) is made and entered into as of the 15th day of July, 2019, by and between Barrett Business Services, Inc., a Maryland corporation (the “Company”), and Michael Elich (“Indemnitee”). This Agreement applies only to Michael Elich in Salinas v. Carley, et al., Circuit Court for Baltimore City, Maryland, Case No. 24-C-19

Summary of Compensatory Arrangements for Non-Employee Directors of the Registrant effective July 1, 2019.

EXHIBIT 10.3 BARRETT BUSINESS SERVICES, INC. SUMMARY OF COMPENSATION ARRANGEMENTS FOR NON-EMPLOYEE DIRECTORS As of July 1, 2019, compensation arrangements for non-employee directors of Barrett Business Services, Inc. (the "Company"), continue to include an annual retainer of $60,000 ($100,000 for the Chairman of the Board) payable in cash in monthly installments. Committee chairs receive an annual

Second Amended and Restated Credit Agreement between the Registrant and Wells Fargo Bank, National Association, dated as of August 6, 2019.

EXHIBIT 4.1 SECOND AMENDED AND RESTATED CREDIT AGREEMENT THIS SECOND AMENDED AND RESTATED CREDIT AGREEMENT (this “Agreement”) dated August 5, 2019, by and between BARRETT BUSINESS SERVICES, INC., a Maryland corporation (“Borrower”), and WELLS FARGO BANK, NATIONAL ASSOCIATION (“Bank”). This Agreement amends, restates and supersedes in its entirety that certain Amended and Restated Credit Agreement

Third Amended and Restated Revolving Line of Credit Note dated August 5, 2019 of the Registrant. Incorporated by reference to Exhibit 4.2 to the 2019 Second Quarter 10-Q.

EXHIBIT 4.2 THIRD AMENDED AND RESTATED REVOLVING LINE OF CREDIT NOTE $33,000,000Portland, Oregon August 5, 2019 This Note amends, restates and supersedes in its entirety that certain Second Amended and Restated Revolving Line of Credit Note in the principal amount of Twenty Eight Million Dollars ($28,000,000), executed by Borrower in favor of Bank and dated July 1, 2018, as such may have been amen

Transition and Separation Agreement between the Registrant and Gregory R. Vaughn dated as of June 3, 2019.

EXHIBIT 10.2 TRANSITION AND SEPARATION AGREEMENT The parties to this Transition and Separation Agreement (this "Agreement") are Gregory R. Vaughn ("Employee") and Barrett Business Services, Inc. (the "Company"). This Agreement is effective as of June 30, 2019 (the "Effective Date"). RECITALS A. Employee wishes to transition out of his current employment with the Company as Chief Operating Officer

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) 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 29, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State of incorporation) (Commission Fi

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): May 29, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State of incorporation) (Commission File Number) (IRS Empl

Power of attorney of certain officers and directors.

EXHIBIT 24.1 POWER OF ATTORNEY Each person whose signature appears below designates and appoints MICHAEL L. ELICH and GARY E. KRAMER, and either of them, true and lawful attorneys-in-fact and agents, to sign a registration statement on Form S-8 to be filed by Barrett Business Services, Inc., a Maryland corporation, with the Securities and Exchange Commission under the Securities Act of 1933, as am

BBSI / Barrett Business Services, Inc. S-8 - - FORM S-8

As filed with the Securities and Exchange Commission on June 3, 2019 Registration No.

Barrett Business Services, Inc. 2019 Employee Stock Purchase Plan.

EXHIBIT 99.1 BARRETT BUSINESS SERVICES, INC. 2019 EMPLOYEE STOCK PURCHASE PLAN 1. GENERAL; PURPOSE. (a) The Plan provides a means by which Eligible Employees of the Company and certain designated Related Corporations may be given an opportunity to purchase shares of Common Stock. The Plan permits the Company to grant a series of Purchase Rights to Eligible Employees under an Employee Stock Purchas

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): May 31, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State of incorporation) (Commission File Number) (IRS Empl

The registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2019 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

First and Second Amendments to the Barrett Business Services, Inc., Nonqualified Deferred Compensation Plan

EXHIBIT 10.1 FIRST AMENDMENT TO THE BARRETT BUSINESS SERVICES, INC. NONQUALIFIED DEFERRED COMPENSATION PLAN Barrett Business Services, Inc. (the “Company”) wishes to amend the Barrett Business Services, Inc. Nonqualified Deferred Compensation Plan dated July 1, 2017 (the “Plan”). Effective as of January 1, 2018 the Plan is amended as follows: 1. Section 2.6 shall be deleted and replaced in it’s en

Regulation FD Disclosure

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 3, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State of incorporation) (Commission File Number) (IRS Emplo

BBSI / Barrett Business Services, Inc. PX14A6G PX14A6G

PX14A6G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 NOTICE OF EXEMPT SOLICITATION Submitted Pursuant to Rule 14a-6(g) 1. Name of the registrant: Barrett Business Services Inc. 2. Name of persons relying on exemption: Wayne King 3. Address of persons relying on exemption: 68 Fox Hill Rd. Califon, NJ 07830 4. Written material: PLEASE NOTE: The attached written materials a

BBSI Reports First Quarter 2019 Financial Results

Exhibit 99.1 BBSI Reports First Quarter 2019 Financial Results VANCOUVER, Washington, April 30, 2019 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the first quarter ended March 31, 2019. First Quarter 2019 Financial Summary vs. Year-Ago Quarter · Gross billings up 3% to $1.36 billion.

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): April 30, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commissio

BBSI / Barrett Business Services, Inc. DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A (RULE 14a-101) 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 Ru

Subsidiaries of the Registrant.

EXHIBIT 21 SUBSIDIARIES OF BARRETT BUSINESS SERVICES, INC. AT DECEMBER 31, 2018 Subsidiary Jurisdiction of Formation Associated Insurance Company for Excess Arizona Ecole Insurance Company Arizona BBS I, LLC Oregon

Barrett Business Services, Inc. Amended and Restated Annual Cash Incentive Award Plan

EXHIBIT 10.45 BARRETT BUSINESS SERVICES, INC. AMENDED AND RESTATED ANNUAL CASH INCENTIVE AWARD PLAN THIS AMENDED AND RESTATED ANNUAL CASH INCENTIVE AWARD PLAN (the "Plan") was initially adopted by Barrett Business Services, Inc., a Maryland corporation ("Corporation"), effective March 7, 2014, and amended and restated effective February 25, 2019, for awards made in 2019 and thereafter. Capitalized

The registrant's Annual Report on Form 10-K for the year ended December 31, 2018.

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 December 31, 2018 Commission File Number 0-21886 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in its charter) Maryland 52-0812977 (State or other jurisdiction of (IRS Employer inc

Regulation FD Disclosure, 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): February 25, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commis

BBSI Reports Record Fourth Quarter and Full Year 2018 Financial Results - Q4 Diluted Earnings Per Share up 60% to a Record $2.21 -

Exhibit 99.1 BBSI Reports Record Fourth Quarter and Full Year 2018 Financial Results - Q4 Diluted Earnings Per Share up 60% to a Record $2.21 - VANCOUVER, Washington, February 26, 2019 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the fourth quarter and full year ended December 31, 201

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 26, 2019 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commis

BBSI / Barrett Business Services, Inc. / VANGUARD GROUP INC Passive Investment

barrettbusinessservicesinc.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 0 )* Name of issuer: Barrett Business Services Inc Title of Class of Securities: Common Stock CUSIP Number: 068463108 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check

BBSI / Barrett Business Services, Inc. / JP Morgan Chase & Co - 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. 06)* BARRETT BUSINESS SERVICES, INC. (Name of Issuer) Common Stock, Par Value $0.01 Per Share (Title of Class of Securities) 068463108 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate

Regulation FD Disclosure

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 9, 2018 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commiss

BBSI Reports Record Earnings in Third Quarter 2018 Financial Results - Q3 Diluted Earnings Per Share up 28% to a Record $2.50 -

Exhibit 99.1 BBSI Reports Record Earnings in Third Quarter 2018 Financial Results - Q3 Diluted Earnings Per Share up 28% to a Record $2.50 - VANCOUVER, Washington, November 6, 2018 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the third quarter ended September 30, 2018. Third Quarter 2

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 6, 2018 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commiss

BBSI / Barrett Business Services, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2018 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVI

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): September 20, 2018 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commi

Amendment to Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics

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 6, 2018 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commissio

Regulation FD Disclosure

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 10, 2018 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commissi

BBSI Reports Second Quarter 2018 Financial Results - Q2 Net Revenues up 3% to $231.6 Million (Gross Billings up 6%) -

Exhibit 99.1 BBSI Reports Second Quarter 2018 Financial Results - Q2 Net Revenues up 3% to $231.6 Million (Gross Billings up 6%) - VANCOUVER, Washington, August 7, 2018 – Barrett Business Services, Inc. (“BBSI” or the “Company”) (NASDAQ: BBSI), a leading provider of business management solutions, reported financial results for the second quarter ended June 30, 2018. Second Quarter 2018 Financial S

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, 2018 BARRETT BUSINESS SERVICES, INC. (Exact name of registrant as specified in charter) Maryland 0-21886 52-0812977 (State or other jurisdiction of incorporation) (Commissio

Form of Employee Nonqualified Stock Option Award Agreement for grants to Gerald R. Blotz and Gary E. Kramer effective March 28, 2018, under the 2015 Plan

EXHIBIT 10.2 FORM OF AWARD AGREEMENT Under The Barrett Business Services, Inc. 2015 Stock Incentive Plan EMPLOYEE NONQUALIFIED STOCK OPTION This Award Agreement (this "Agreement"), effective as of the Grant Date indicated below, evidences the grant of a Nonqualified Option (the "Option") to Participant under the Barrett Business Services, Inc., 2015 Stock Incentive Plan (the "Plan"). Corporation:

BBSI / Barrett Business Services, Inc. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2018 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period From to Commission File Number 0-21886 BARRETT BUSINESS SERVICES,

Amended and Restated Standby Letter of Credit Agreement dated as of June 20, 2018, between the Registrant and Wells Fargo

EXHIBIT 4.4 AMENDED AND RESTATED STANDBY LETTER OF CREDIT AGREEMENT (CREDIT AGREEMENT/LOAN AGREEMENT VERSION) THIS AMENDED AND RESTATED STANDBY LETTER OF CREDIT AGREEMENT (this “Agreement”) is by and between/among the undersigned (individually and collectively, “Applicant”; jointly and severally, if more than one) and to induce Wells Fargo Bank, National Association and/or any of its branches or a

Third Amendment, dated as of July 1, 2018, to the Credit Agreement.

EXHIBIT 4.2 THIRD AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT THIS AMENDMENT TO CREDIT AGREEMENT (this “Amendment”) is entered into as of July 1, 2018, by and between BARRETT BUSINESS SERVICES, INC., a Maryland corporation (“Borrower”), and WELLS FARGO BANK, NATIONAL ASSOCIATION (“Bank”). RECITALS WHEREAS, Borrower is currently indebted to Bank pursuant to the terms and conditions of that c

Amended and Restated Security Agreement: Business Assets, dated as of June 20, 2018, between the Registrant and Wells Fargo. Incorporated by reference to Exhibit 4.5 to the 2018 Second Quarter 10‑Q.

EXHIBIT 4.5 AMENDED AND RESTATED SECURITY AGREEMENT: BUSINESS ASSETS June 20, 2018 This Agreement amends and restates in its entirety (i) that certain Continuing Security Agreement: Rights to Payment and Inventory dated September 18, 2012, executed by Debtor in favor of Bank and (ii) that certain Security Agreement: Equipment dated September 18, 2012, executed by Debtor in favor of Bank (collectiv

Charter of the Registrant, as amended, through May 31, 2018. Incorporated by reference to Exhibit 3.1 to the Registrant's Quarterly Report on Form 10‑Q for the quarter ended June 30, 2018 (the "2018 Second Quarter 10-Q").

EXHIBIT 3.1 BARRETT BUSINESS SERVICES, INC. AMENDED AND RESTATED CHARTER As Amended Through May 31, 2018 ARTICLE I The name of this corporation (the "Corporation") is Barrett Business Services, Inc. ARTICLE II The purposes for which the Corporation is formed are: (a) To engage generally in the business of supplying temporary and long-term employees to others. (b) To engage in any other business de

Form of Restricted Stock Units Award Agreement for Non-Employee Directors for awards granted in 2018 under the 2015 Plan. Incorporated by reference to Exhibit 10.4 to the 2018 Second Quarter 10‑Q.*

EXHIBIT 10.4 FORM OF AWARD AGREEMENT Under The Barrett Business Services, Inc. 2015 Stock Incentive Plan NON-EMPLOYEE DIRECTOR RESTRICTED STOCK UNITS This Non-Employee Director Restricted Stock Units Award Agreement (this “Agreement”), effective as of the date indicated below, evidences the grant of Restricted Units (“RSUs”) to Participant under Article 9 of the Barrett Business Services, Inc., 20

Bylaws of the Registrant, as amended through May 31, 2018. Incorporated by reference to Exhibit 3.2 to the 2018 Second Quarter 10‑Q.

EXHIBIT 3.2 BARRETT BUSINESS SERVICES, INC. BYLAWS As Amended Through May 31, 2018 ARTICLE I STOCKHOLDERS Section 1.1Annual Meeting. The Annual Meeting of the stockholders shall be held in May or June of each year on the date and at the time established by the board of directors for the purpose of electing directors and for the transaction of such other business as may come before the meeting. The

Third Party Security Agreement: Business Assets, dated as of June 20, 2018, between Associated Insurance Company for Excess, a subsidiary of the Registrant, and Wells Fargo. Incorporated by reference to Exhibit 4.6 to the 2018 Second Quarter 10‑Q.

EXHIBIT 4.6 THIRD PARTY SECURITY AGREEMENT: BUSINESS ASSETS June 20, 2018 1. GRANT OF SECURITY INTEREST. In consideration of any credit or other financial accommodation heretofore, now or hereafter extended or made to BARRETT BUSINESS SERVICES, INC. (“Borrower”) by WELLS FARGO BANK, NATIONAL ASSOCIATION (“Bank”), and for other valuable consideration, which materially benefits ASSOCIATED INSURANCE

Form of Performance Share Award Agreement for Executive Officers for awards granted beginning in 2018 under the 2015 Plan. Incorporated by reference to Exhibit 10.1 to the 2018 Second Quarter 10‑Q.*

EXHIBIT 10.1 FORM OF AWARD AGREEMENT Under The Barrett Business Services, Inc. 2015 Stock Incentive Plan PERFORMANCE SHARE AWARD (Executive Officer) This Performance Share Award Agreement (this “Agreement”) , effective as of the date indicated below, evidences the grant of Performance Shares (“Performance Shares”) to Participant under Article 10 of the Barrett Business Services, Inc., 2015 Stock I

Second Amended and Restated Revolving Line of Credit Note dated July 1, 2018 of the Registrant.

EXHIBIT 4.3 SECOND AMENDED AND RESTATED REVOLVING LINE OF CREDIT NOTE $28,000,000 Portland, Oregon July 1, 2018 This Note amends, restates and supersedes in its entirety that certain Amended and Restated Revolving Line of Credit Note in the principal amount of Forty Million Dollars ($40,000,000), executed by Borrower in favor of Bank and dated March 15, 2018, as such may have been amended or modif

Description of the Registrant's Capital Stock.

EXHIBIT 99.1 BARRETT BUSINESS SERVICES, INC. DESCRIPTION OF CAPITAL STOCK Barrett Business Services, Inc. (the "Company"), is authorized to issue 500,000 shares of Preferred Stock, $.01 par value, issuable in series, and 20,500,000 shares of Common Stock, $.01 par value. The Common Stock is listed on the Global Select Market of The Nasdaq Stock Market under the symbol "BBSI." Common Stock Meetings