BHRB / Burke & Herbert Financial Services Corp. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Burke & Herbert Financial Services Corp.
US ˙ NasdaqCM ˙ US12135Y1082

Mga Batayang Estadistika
LEI 549300OS8C7J7ZWMNL70
CIK 1964333
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Burke & Herbert Financial Services Corp.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
August 8, 2025 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR o 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 001

July 28, 2025 S-8

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

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

July 28, 2025 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Burke & Herbert Financial Services Corp.

July 24, 2025 EX-99.2

July 2025 2Q25 Update (Nasdaq: BHRB) 2 Cautionary Statement Regarding Forward-Looking Information This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the

a2q25investordeck2025072 July 2025 2Q25 Update (Nasdaq: BHRB) 2 Cautionary Statement Regarding Forward-Looking Information This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, with respect to the b

July 24, 2025 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 24, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 00

July 24, 2025 EX-99.1

Burke & Herbert Financial Services Corp. Announces Second Quarter 2025 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces Second Quarter 2025 Results and Declares Common Stock Dividend For Immediate Release July 24, 2025 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter year ended June 30, 2025, and disclosed that, at its meeting on July 24, 2025, the board of direc

May 23, 2025 8-K

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 May 22, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 001

May 9, 2025 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR o 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 00

April 25, 2025 EX-99.1

Burke & Herbert Financial Services Corp. Announces First Quarter 2025 Results, Declares Common Stock Dividend, and Announces Share Repurchase Program

Burke & Herbert Financial Services Corp. Announces First Quarter 2025 Results, Declares Common Stock Dividend, and Announces Share Repurchase Program For Immediate Release April 25, 2025 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter year ended March 31, 2025, and disclosed that, at its meetin

April 25, 2025 EX-99.2

1 1Q25 Update (Nasdaq: BHRB) April 2025 2 Cautionary Statement Regarding Forward-Looking Information This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of t

1 1Q25 Update (Nasdaq: BHRB) April 2025 2 Cautionary Statement Regarding Forward-Looking Information This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, with respect to the beliefs, goals, intenti

April 25, 2025 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 25, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 0

April 21, 2025 EX-99.1

Burke & Herbert Financial Services Corp. Announces Appointment of Chief Accounting Officer

Burke & Herbert Financial Services Corp. Announces Appointment of Chief Accounting Officer April 21, 2025 ALEXANDRIA, Va., April 21, 2025 /PRNewswire/ - Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) announced the appointment of Patrick “Kip” Huffman, CPA, as Senior Vice President and Chief Accounting Officer. Huffman brings nearly 20 years of accounti

April 21, 2025 EX-10.1

Offer Letter

April 21, 2025 8-K

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 April 21, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 0

March 31, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION REQUIRED IN PROXY STATEMENT 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 INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission

March 31, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION REQUIRED IN PROXY STATEMENT 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 INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission

March 19, 2025 8-K

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 March 14, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 0

March 17, 2025 10-K

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR o 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 001-416

March 17, 2025 EX-10.20

Form of Summit Financial Group, Inc. 2014 Long-Term Incentive Plan Stock Settled Stock Appreciation Rights Agreement 2023 Award

NOTICE OF STOCK-SETTLED STOCK APPRECIATION RIGHTS GRANT Participant: Notice: You have been granted the following stock-settled stock appreciation rights (the "SARs") in accordance with the terms of the Summit Financial Group, Inc.

March 17, 2025 EX-21.1

Subsidiaries of Burke & Herbert Financial Services Corp.

Exhibit 21.1 Subsidiaries of Registrant Name of Subsidiary Type State of Incorporation Burke & Herbert Bank & Trust Company State banking corporation Virginia SFG Capital Trust I Statutory business trust Delaware SFG Capital Trust II Statutory business trust Delaware SFG Capital Trust III Statutory business trust Delaware

March 17, 2025 EX-19.1

e & Herbert Financial Services Corp.

Burke & Herbert Financial Services Corp. INSIDER TRADING POLICY Approved this 4th day of January, 2024 by the Board of Directors. Purpose This Insider Trading Policy (the “Policy”) provides guidelines with respect to transactions in the securities of Burke & Herbert Financial Services Corp. (together with its subsidiaries, unless the context requires otherwise, the “Company”) and the handling of c

March 17, 2025 EX-10.14

Separation Agreement and Release of Claims, dated as of January 2, 2025, by and between Burke & Herbert Bank & Trust Company and Jeffrey Welch

SEPARATION AGREEMENT AND RELEASE OF CLAIMS This Separation Agreement and Release of Claims (“Agreement”) is made by and between Jeffrey Welch (“Employee”), an individual, and Burke & Herbert Bank & Trust Company (“B&H” or the “Bank”), a bank conducting business in the Commonwealth of Virginia.

March 6, 2025 EX-99.1

Burke & Herbert Financial Services Corp. Announces Appointment of Chief Credit Officer

Burke & Herbert Financial Services Corp. Announces Appointment of Chief Credit Officer March 6, 2025 ALEXANDRIA, Va., Jan. 24, 2025 /PRNewswire/ - Burke & Herbert Financial Services Corp. (the "Company" or "Burke & Herbert") (Nasdaq: BHRB) announced the appointment of Robert V. “Cedar” Hintelmann, Jr., as Executive Vice President and Chief Credit Officer, effective March 17, 2025. Hintelmann bring

March 6, 2025 8-K

Regulation FD Disclosure, 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 March 6, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 00

January 30, 2025 8-K/A

Financial Statements and Exhibits, Other Events

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 January 23, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporat

January 29, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, 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 January 23, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

January 24, 2025 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 24, 2025 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

January 24, 2025 EX-99.1

Burke & Herbert Financial Services Corp. Announces Fourth Quarter and Full Year 2024 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces Fourth Quarter and Full Year 2024 Results and Declares Common Stock Dividend For Immediate Release January 24, 2025 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter and the year ended December 31, 2024. In addition, at its meeting on January 23,

January 24, 2025 EX-99.2

1 4Q24 Update (Nasdaq: BHRB) January 2025 2 Cautionary Statement Regarding Forward-Looking Information This presentation contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of

1 4Q24 Update (Nasdaq: BHRB) January 2025 2 Cautionary Statement Regarding Forward-Looking Information This presentation contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, with respect to the beliefs, goals, intentions, and expectations of Burke & Herbert Financial Services Corp.

December 9, 2024 CORRESP

Burke & Herbert Financial Services Corp. 100 S. Fairfax Street Alexandria, Virginia 22314

Burke & Herbert Financial Services Corp. 100 S. Fairfax Street Alexandria, Virginia 22314 December 9, 2024 Ms. Susan Block U. S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-0303 VIA EDGAR Re: Burke & Herbert Financial Services Corp. Registration Statement on Form S-3 File No. 333-283261 (the “Registration Statement”) Request for Acce

December 6, 2024 S-3/A

As filed with the Securities and Exchange Commission on December 6, 2024

As filed with the Securities and Exchange Commission on December 6, 2024 Registration No.

December 6, 2024 CORRESP

101 South Queen Street, Martinsburg, WV 25401 Attorneys at Law 125 Granville Square, Suite 400 Morgantown, WV 26501 600 Quarrier Street, Charleston, WV 25301 501 Avery Street, Parkersburg, WV 26101 P.O. Box 1386, Charleston, WV 25325-1386 Southpointe

101 South Queen Street, Martinsburg, WV 25401 Attorneys at Law 125 Granville Square, Suite 400 Morgantown, WV 26501 600 Quarrier Street, Charleston, WV 25301 501 Avery Street, Parkersburg, WV 26101 P.

December 3, 2024 8-K

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 December 3, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

November 15, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Burke & Herbert Financial Services Corp.

November 15, 2024 EX-4.5

Form of Senior Indenture

Exhibit 4.5 BURKE & HERBERT FINANCIAL SERVICES CORP. AND as Trustee INDENTURE Dated as of SENIOR DEBT SECURITIES TABLE OF CONTENTS Page ARTICLE ONE DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION 1 SECTION 101. Definitions 1 SECTION 102. Compliance Certificates and Opinions 6 SECTION 103. Form of Documents Delivered to Trustee 6 SECTION 104. Acts of Holders 7 SECTION 105. Notices, etc. 7 S

November 15, 2024 EX-4.7

Form of Subordinated Indenture

Exhibit 4.7 BURKE & HERBERT FINANCIAL SERVICES CORP. AND , as Trustee INDENTURE Dated as of , 202 SUBORDINATED DEBT SECURITIES TABLE OF CONTENTS ARTICLE ONE DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION SECTION 101. Definitions 1 SECTION 102. Compliance Certificates and Opinions 8 SECTION 103. Form of Documents Delivered to Trustee 8 SECTION 104. Acts of Holders 9 SECTION 105. Notices, e

November 15, 2024 S-3

As filed with the Securities and Exchange Commission on November 15, 2024

As filed with the Securities and Exchange Commission on November 15, 2024 Registration No.

November 15, 2024 EX-4.1

Burke & Herbert Financial Serv

Exhibit 4.1 Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934, As Amended The following description of the securities of Burke & Herbert Financial Services Corp. (the “Company”) may not be complete and is subject to, and qualified in its entirety by reference to, applicable provisions of Virginia law and the terms and provisions of

November 13, 2024 8-K

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 November 7, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

November 13, 2024 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

October 25, 2024 EX-99.1

Burke & Herbert Financial Services Corp. Announces Third Quarter 2024 Results and Increases Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces Third Quarter 2024 Results and Increases Common Stock Dividend For Immediate Release October 25, 2024 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter ended September 30, 2024. In addition, at its meeting on October 24, 2024, the board of direct

October 25, 2024 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 25, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

October 25, 2024 EX-99.2

1 3Q24 Update (Nasdaq: BHRB) October 2024 Please Note: Third quarter 2024 financial results reflect a full quarter following the May 3, 2024, completion of the merger of Summit Financial Group, Inc. with and into Burke & Herbert Financial Services Co

1 3Q24 Update (Nasdaq: BHRB) October 2024 Please Note: Third quarter 2024 financial results reflect a full quarter following the May 3, 2024, completion of the merger of Summit Financial Group, Inc.

August 13, 2024 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR o 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 001

August 13, 2024 EX-3.1

Articles of Incorporation Burke & Herbert Financial Services Corp. as amended

ARTICLES OF INCORPORATION OF BURKE & HERBERT FINANCIAL SERVICES CORP. This is to certify that we do hereby associate ourselves to establish a corporation (the “Corporation”) under and by virtue of the Virginia Stock Corporation Act, Chapter 9, Title 13.1 of the Code of Virginia (the “Code”), and acts amendatory thereof, for the purposes, and under the corporate name, hereinafter mentioned, and to

July 26, 2024 EX-99.2

1 2Q24 Update (Nasdaq: BHRB) July 2024 2 Cautionary Statement Regarding Forward-Looking Information This presentation contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the

1 2Q24 Update (Nasdaq: BHRB) July 2024 2 Cautionary Statement Regarding Forward-Looking Information This presentation contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, with respect to the beliefs, goals, intention

July 26, 2024 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 26, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 00

July 26, 2024 EX-99.1

Burke & Herbert Financial Services Corp. Announces Second Quarter 2024 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces Second Quarter 2024 Results and Declares Common Stock Dividend For Immediate Release July 26, 2024 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter ended June 30, 2024. In addition, at its meeting on July 25, 2024, the board of directors declare

July 16, 2024 EX-99.1

ARTICLES OF AMENDMENT TO THE ARTICLES OF INCORPORATION OF BURKE & HERBERT FINANCIAL SERVICES CORP.

Exhibit 99.1 ARTICLES OF AMENDMENT TO THE ARTICLES OF INCORPORATION OF BURKE & HERBERT FINANCIAL SERVICES CORP. The undersigned, on behalf of the corporation set forth below, pursuant to Article 11 of the Virginia Stock Corporation Act (the “Act”), states as follows: 1.The name of the corporation is Burke & Herbert Financial Services Corp. 2.The introductory paragraph to Article III of the corpora

July 16, 2024 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 15, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 00

July 11, 2024 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 3) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 3, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation o

July 11, 2024 EX-99.3

UNAUDITED PRO FORMA CONDENSED COMBINED CONSOLIDATED FINANCIAL INFORMATION

Exhibit 99.3 UNAUDITED PRO FORMA CONDENSED COMBINED CONSOLIDATED FINANCIAL INFORMATION The unaudited pro forma condensed combined consolidated financial information has been prepared using the acquisition method of accounting under the provisions of the Financial Accounting Standards Board ("FASB") Accounting Standards Codification, ASC 805 "Business Combinations", giving effect to Burke & Herbert

July 10, 2024 EX-99.2

UNAUDITED PRO FORMA CONDENSED COMBINED CONSOLIDATED FINANCIAL INFORMATION

Exhibit 99.2 UNAUDITED PRO FORMA CONDENSED COMBINED CONSOLIDATED FINANCIAL INFORMATION The unaudited pro forma condensed combined consolidated financial information has been prepared using the acquisition method of accounting under the provisions of the Financial Accounting Standards Board ("FASB") Accounting Standards Codification, ASC 805 "Business Combinations", giving effect to Burke & Herbert

July 10, 2024 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 2) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 3, 2024 Date of Report (date of earliest event reported) Bu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 2) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 3, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation o

May 29, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION REQUIRED IN PROXY STATEMENT 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 INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission

May 29, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION REQUIRED IN PROXY STATEMENT 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 INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission

May 10, 2024 EX-3.4

Bylaws of Burke & Herbert Financial Services Corp. as amended

Exhibit 3.4 BYLAWS OF BURKE & HERBERT FINANCIAL SERVICES CORP. Effective as May 3, 2024 ARTICLE I OFFICES SECTION 1. Principal Office. The principal office of the Corporation shall be located at the Main Office at the southeast intersection of King Street and Fairfax Street in the City of Alexandria, Virginia. The Board of Directors shall have the power and authority to change the location of the

May 10, 2024 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A INFORMATION REQUIRED IN PROXY STATEMENT 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 INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission

May 10, 2024 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR o 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 00

May 9, 2024 8-K/A

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/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 3, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation o

May 3, 2024 EX-3.5

urke & Herbert Bylaw Amendment, dated and effective as of 12:01 a.

Exhibit 3.5 EXHIBIT 1.4(b) To the Agreement and Plan of Reorganization Form of Bylaw Amendments to Bylaws of the Continuing Corporation Article III, Section 2 of the Bylaws of the Continuing Corporation shall be amended and restated as set forth below. 2. Number and Tenure. Effective as of the Effective Time (as defined herein), and notwithstanding any other provision of these Bylaws that may be t

May 3, 2024 EX-3.2

Articles of Amendment to the Articles of Incorporation (incorporated by reference to

Exhibit 3.3 ARTICLES OF AMENDMENT TO THE ARTICLES OF INCORPORATION OF BURKE & HERBERT FINANCIAL SERVICES CORP. The undersigned, on behalf of the corporation set forth below, pursuant to Article 11 of the Virginia Stock Corporation Act (the “Act”), states as follows: 1.The name of the Corporation is Burke & Herbert Financial Services Corp. 2.Article III of the Corporation’s Articles of Incorporatio

May 3, 2024 EX-10.1

Employment Agreement, dated as of August 24, 2023, by and between Burke & Herbert Bank & Trust Company and H. Charles Maddy, III

Exhibit 10.1 Execution Version EMPLOYMENT AGREEMENT This Employment Agreement (this “Agreement”) is dated as of August 24, 2023 (the “Signing Date”) by and between Burke & Herbert Bank & Trust Company, a Virginia community bank (the “Bank”), and H. Charles Maddy, III (“Executive”). This Agreement collectively refers to the Bank and Executive as the “Parties,” and separately may refer to any one of

May 3, 2024 S-8

As filed with the Securities and Exchange Commission on May 3, 2024

As filed with the Securities and Exchange Commission on May 3, 2024 Registration No.

May 3, 2024 EX-10.5

Burke & Herbert Bank 2024-2025 Merger Incentive Plan Form of Performance-Based Restricted Stock Unit Award Agreement

Exhibit 10.3 BURKE & HERBERT FINANCIAL SERVICES CORP. 2023 STOCK INCENTIVE PLAN NOTICE OF GRANT OF PERFORMANCE RESTRICTED STOCK UNITS AWARD Burke & Herbert Financial Services Corp., pursuant to its 2023 Stock Incentive Plan (the “Plan”), hereby grants to the individual listed below (the “Participant”) this award of Performance Restricted Stock Units. The Performance Restricted Stock Units describe

May 3, 2024 EX-10.4

Burke & Herbert Bank 2024-2025 Merger Incentive Plan

Exhibit 10.2 2024–2025 Merger Incentive Plan Purpose The purpose of this Merger Incentive Plan (the “Plan”) is to provide cash and equity-based incentive awards to members of senior management of Burke & Herbert Bank and its affiliates (referred to generally as the “Bank”), in order to retain and incentivize such individuals to achieve key milestones following the merger of Burke & Herbert Financi

May 3, 2024 EX-FILING FEES

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Burke & Herbert Financial Services Corp.

May 3, 2024 8-K

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, Material Modification to Rights of Security Holders, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Completion of Acquisition or Disposition of Assets, 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 May 3, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 001-

May 3, 2024 EX-99.1

Burke & Herbert Financial Services Corp. Completes Merger of Equals with Summit Financial Group, Inc.

Burke & Herbert Financial Services Corp. Completes Merger of Equals with Summit Financial Group, Inc. May 3, 2024 ALEXANDRIA, Va. and MOOREFIELD, W.Va., May 3, 2024 /PRNewswire/ - Burke & Herbert Financial Services Corp. ("Burke & Herbert") (Nasdaq: BHRB) today announced the completion of the merger of Summit Financial Group, Inc. ("Summit") with and into Burke & Herbert and the merger of Summit C

May 1, 2024 S-4MEF

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

As filed with the Securities and Exchange Commission on May 1, 2024 Registration No.

May 1, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-4 (Form Type) Burke & Herbert Financial Services Corp.

April 26, 2024 EX-99.2

1 1Q24 Update (Nasdaq: BHRB) April 2024 On April 19, 2024, the Company and Summit Financial Group, Inc. (“Summit”) (Nasdaq: SMMF) announced receipt of the final regulatory approval required to complete the previously announced merger of equals pursua

1 1Q24 Update (Nasdaq: BHRB) April 2024 On April 19, 2024, the Company and Summit Financial Group, Inc.

April 26, 2024 8-K

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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 26, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 0

April 26, 2024 EX-99.1

Burke & Herbert Financial Services Corp. Announces First Quarter 2024 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces First Quarter 2024 Results and Declares Common Stock Dividend For Immediate Release April 26, 2024 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter ended March 31, 2024. In addition, at its meeting on April 25, 2024, the board of directors decla

April 19, 2024 EX-99.1

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Receipt of Regulatory Approvals and Closing Date for Merger of Equals Burke & Herbert Annual Shareholder Meeting Date Established

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Receipt of Regulatory Approvals and Closing Date for Merger of Equals Burke & Herbert Annual Shareholder Meeting Date Established April 19, 2024 ALEXANDRIA, Va. and MOOREFIELD, W.Va., April 19, 2024 /PRNewswire/ - Burke & Herbert Financial Services Corp. ("Burke & Herbert") (Nasdaq: BHRB) and Summit Financial Group,

April 19, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 19, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 0

April 12, 2024 EX-10.13

Burke & Herbert Bank & Trust Company Supplemental Executive Retirement Plan, as amended and restated effective January 23, 2014, and as further amended

BURKE & HERBERT BANK & TRUST COMPANY SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN As Amended and Restated Effective January 23, 2014 INTRODUCTION The Board of Directors of Burke & Herbert Bank & Trust Company adopted the Supplemental Executive Retirement Plan, effective as of January 1, 2010 (the "Plan"), for the purpose of attracting and retaining qualified individuals to serve as officers and managers of the Company.

April 12, 2024 EX-10.14

& Trust Company Nonqualified Deferred Compensation Plan for E

AMENDMENT NO. 1 BURKE & HERBERT BANK & TRUST COMPANY NONQUALIFIED DEFERRED COMPENSATION PLAN FOR EMPLOYEES & DIRECTORS AMENDED & RESTATED EFFECTIVE AS OF JANUARY 1, 2021 WHEREAS, Burke & Herbert Bank & Trust Company (the “Bank”) maintains the Nonqualified Deferred Compensation Plan for Employees & Directors, as amended and restated effective as of January 1, 2021 (the “Plan”), in order to enable a

April 12, 2024 10-K/A

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission

March 22, 2024 10-K

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR o 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 001-416

March 22, 2024 EX-4.2

Description of the Securities

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934, As Amended The following description of the securities of Burke & Herbert Financial Services Corp.

March 22, 2024 EX-21.1

Subsidiaries of Burke & Herbert Financial Services Corp.

Subsidiaries of Burke & Herbert Financial Services Corp. Name of Subsidiary State of Incorporation Burke & Herbert Bank & Trust Company Virginia

March 22, 2024 EX-97.1

Executive Compensation Recovery Policy

BURKE & HERBERT FINANCIAL SERVICES CORP. CLAWBACK POLICY The Board of Directors (the “Board”) of Burke & Herbert Financial Services Corp. (the “Company”), upon recommendation of the Compensation Committee of the Board (the “Compensation Committee”) has adopted the following Clawback Policy (this “Policy”) on July 27, 2023, effective as of October 2, 2023 (the “Effective Date”). 1.Purpose. The purp

February 6, 2024 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 February 6, 2024 Date of Report (date of earliest event reported) Burke & Herbert F

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 February 6, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

February 6, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 February 6, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

February 6, 2024 EX-99.1

1 4Q23 Update (Nasdaq: BHRB) February 2024 On August 24, 2023, Burke & Herbert Financial Services Corp. (the “Company”) and Summit Financial Group, Inc. ("Summit") (Nasdaq: SMMF) announced the signing of a definitive agreement under which Summit will

1 4Q23 Update (Nasdaq: BHRB) February 2024 On August 24, 2023, Burke & Herbert Financial Services Corp.

February 6, 2024 EX-99.1

1 4Q23 Update (Nasdaq: BHRB) February 2024 On August 24, 2023, Burke & Herbert Financial Services Corp. (the “Company”) and Summit Financial Group, Inc. ("Summit") (Nasdaq: SMMF) announced the signing of a definitive agreement under which Summit will

EX-99.1 2 bhfsinvestordeckxq4x202.htm EX-99.1 1 4Q23 Update (Nasdaq: BHRB) February 2024 On August 24, 2023, Burke & Herbert Financial Services Corp. (the “Company”) and Summit Financial Group, Inc. ("Summit") (Nasdaq: SMMF) announced the signing of a definitive agreement under which Summit will merge with and into the Company in an all-stock merger of equals. When the merger is completed, the com

January 26, 2024 EX-99.1

Burke & Herbert Financial Services Corp. Announces Fourth Quarter and Full Year 2023 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces Fourth Quarter and Full Year 2023 Results and Declares Common Stock Dividend For Immediate Release January 26, 2024 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter ended and year ended December 31, 2023. In addition, at its meeting on January 2

January 26, 2024 EX-99.1

Burke & Herbert Financial Services Corp. Announces Fourth Quarter and Full Year 2023 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces Fourth Quarter and Full Year 2023 Results and Declares Common Stock Dividend For Immediate Release January 26, 2024 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter ended and year ended December 31, 2023. In addition, at its meeting on January 2

January 26, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 26, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

January 26, 2024 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 26, 2024 Date of Report (date of earliest event reported) Burke & Herbert F

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 January 26, 2024 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

December 7, 2023 EX-99.1

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Receipt of Shareholder Approval for Merger

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Receipt of Shareholder Approval for Merger Alexandria, Va. and Moorefield, W. Va., December 6, 2023 /PRNewswire/ - Burke & Herbert Financial Services Corp. (“Burke & Herbert”) (Nasdaq: BHRB) and Summit Financial Group, Inc. (“Summit”) (Nasdaq: SMMF) today announced that at special meetings of their respective shareh

December 7, 2023 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 6, 2023 Date of Report (date of earliest event reported) Burke & Herbert F

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 December 6, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

December 7, 2023 EX-99.1

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Receipt of Shareholder Approval for Merger

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Receipt of Shareholder Approval for Merger Alexandria, Va. and Moorefield, W. Va., December 6, 2023 /PRNewswire/ - Burke & Herbert Financial Services Corp. (“Burke & Herbert”) (Nasdaq: BHRB) and Summit Financial Group, Inc. (“Summit”) (Nasdaq: SMMF) today announced that at special meetings of their respective shareh

December 7, 2023 8-K

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 December 6, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

November 20, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 20, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization

November 20, 2023 EX-99.1

1 3Q23 Update (Nasdaq: BHRB) November 2023 On August 24, 2023, Burke & Herbert Financial Services Corp. (the “Company”) and Summit Financial Group, Inc. ("Summit") (Nasdaq: SMMF) announced the signing of a definitive agreement under which Summit will

1 3Q23 Update (Nasdaq: BHRB) November 2023 On August 24, 2023, Burke & Herbert Financial Services Corp.

November 20, 2023 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 20, 2023 Date of Report (date of earliest event reported) Burke & Herbert

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 November 20, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization

November 20, 2023 EX-99.1

1 3Q23 Update (Nasdaq: BHRB) November 2023 On August 24, 2023, Burke & Herbert Financial Services Corp. (the “Company”) and Summit Financial Group, Inc. ("Summit") (Nasdaq: SMMF) announced the signing of a definitive agreement under which Summit will

1 3Q23 Update (Nasdaq: BHRB) November 2023 On August 24, 2023, Burke & Herbert Financial Services Corp.

November 9, 2023 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

November 9, 2023 424B3

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

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274810 PROSPECTUS SUPPLEMENT, NO. 1, DATED NOVEMBER 9, 2023 (to Joint Proxy Statement/Prospectus, Dated October 16, 2023) This Prospectus Supplement No. 1, dated November 9, 2023 (this “Supplement”), updates and supplements the joint proxy statement/prospectus dated October 16, 2023 (the “Joint Proxy Statement/Prospectus”). Burke & Herbert Fina

November 9, 2023 425

November 9, 2023

Filed by Burke & Herbert Financial Services Corp. (Commission File No. 001-41633) pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Form S-4 file No. 333-274810 Subject Company: Summit Financial Group, Inc. (Commission File No. 000-16587) Date: November 9, 2023 November 9, 2023 Dear Burke & Herbert Financial Ser

October 27, 2023 EX-99.1

Burke & Herbert Financial Services Corp. Announces Third Quarter 2023 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces Third Quarter 2023 Results and Declares Common Stock Dividend For Immediate Release October 27, 2023 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company” or “Burke & Herbert”) (Nasdaq: BHRB) reported financial results for the quarter ended September 30, 2023. In addition, at its meeting on October 26, 2023, the board of directo

October 27, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 27, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

October 16, 2023 424B3

To the Shareholders of Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. MERGER PROPOSED—YOUR VOTE IS VERY IMPORTANT

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274810 To the Shareholders of Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. MERGER PROPOSED—YOUR VOTE IS VERY IMPORTANT On behalf of the boards of directors of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) and Summit Financial Group, Inc. (“Summit”), we are pleased to enclose the accompanying joint pro

October 12, 2023 CORRESP

Burke & Herbert Financial Services Corp. 100 S. Fairfax Street Alexandria, VA 22314

Burke & Herbert Financial Services Corp. 100 S. Fairfax Street Alexandria, VA 22314 October 12, 2023 via EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, DC 20549 RE: Burke & Herbert Financial Services Corp. Registration Statement on Form S-4 (Registration No. 333-274810) Request for Acceleration of Effectiveness Ladies and Gentlemen Pursuant

October 12, 2023 EX-99.1

Form of Proxy of Burke & Herbert Financial Services Corp.

0 - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 14475 BURKE & HERBERT FINANCIAL SERVICES CORP. Proxy for Special Meeting of Shareholders on December 6, 2023 For holders of record as of October 12, 2023 PROXY FOR COMMON SHARES SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS FOR THE SPECIAL MEETING OF SHAREHOLDERS OF BURKE & HERBERT FIN

October 12, 2023 EX-99.2

Form of Proxy of Summit Financial Group, Inc.

1 U P X Using a black ink pen, mark your votes with an X as shown in this example.

October 12, 2023 S-4/A

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

As filed with the Securities and Exchange Commission on October 12, 2023 Registration No.

October 2, 2023 EX-99.12

Consent of Jill S. Upson

Exhibit 99.12 Consent of Person Named as About to Become Director In accordance with Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a person who is anticipated to become a director of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) following the consummation of the merger of Summit Financial Group, Inc. (“Summit”) with and into

October 2, 2023 EX-99.7

Consent of James

Exhibit 99.7 Consent of Person Named as About to Become Director In accordance with Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a person who is anticipated to become a director of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) following the consummation of the merger of Summit Financial Group, Inc. (“Summit”) with and into

October 2, 2023 EX-99.3

Consent of Keefe, Bruyette & Woods, Inc.

Exhibit 99.3 CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Burke & Herbert Financial Services Corp. (“Burke & Herbert”), as Annex B to the Joint Proxy Statement/Prospectus which forms a part of the Registration Statement on Form S-4 filed on the date hereof (the “Registration Statement”) relating to the proposed merge

October 2, 2023 S-4

As filed with the Securities and Exchange Commission on September 29, 2023

As filed with the Securities and Exchange Commission on September 29, 2023 Registration No.

October 2, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-4 (Form Type) Burke & Herbert Financial Services Corp.

October 2, 2023 EX-99.9

Consent of Gary L. Hinkle

Exhibit 99.9 Consent of Person Named as About to Become Director In accordance with Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a person who is anticipated to become a director of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) following the consummation of the merger of Summit Financial Group, Inc. (“Summit”) with and into

October 2, 2023 EX-99.8

Consent of Georgette R. George

Exhibit 99.8 Consent of Person Named as About to Become Director In accordance with Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a person who is anticipated to become a director of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) following the consummation of the merger of Summit Financial Group, Inc. (“Summit”) with and into

October 2, 2023 EX-99.6

Consent of Oscar M. Bean

Exhibit 99.6 Consent of Person Named as About to Become Director In accordance with Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a person who is anticipated to become a director of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) following the consummation of the merger of Summit Financial Group, Inc. (“Summit”) with and into

October 2, 2023 EX-99.4

Consent of D.A. Davidson & Co.

Exhibit 99.4 September 29, 2023 Board of Directors Summit Financial Group, Inc. 300 North Main Street Moorefield, WV 26836 Members of the Board: We hereby consent to the inclusion of our opinion letter, dated August 24, 2023, to the Board of Directors of Summit Financial Group, Inc. as Annex C to the Joint Proxy Statement/Prospectus, which forms a part of the Registration Statement on Form S-4 of

October 2, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 September 29, 2023 Date of Report (date of earliest event reported) Burke & Herbert

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 September 29, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organizatio

October 2, 2023 EX-99.1

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Submit Filings Related to Merger Agreement

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Submit Filings Related to Merger Agreement ALEXANDRIA, Va., October 2, 2023 /PRNewswire/ - Burke & Herbert Financial Services Corp. (“Burke & Herbert”) (Nasdaq: BHRB) and Summit Financial Group, Inc. (“Summit”) (Nasdaq: SMMF) today announced the submission of regulatory filings related to the merger agreement between Burke &

October 2, 2023 EX-99.1

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Submit Filings Related to Merger Agreement

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Submit Filings Related to Merger Agreement ALEXANDRIA, Va., October 2, 2023 /PRNewswire/ - Burke & Herbert Financial Services Corp. (“Burke & Herbert”) (Nasdaq: BHRB) and Summit Financial Group, Inc. (“Summit”) (Nasdaq: SMMF) today announced the submission of regulatory filings related to the merger agreement between Burke &

October 2, 2023 EX-99.10

Consent of Jason A. Kitzmiller

Exhibit 99.10 Consent of Person Named as About to Become Director In accordance with Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a person who is anticipated to become a director of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) following the consummation of the merger of Summit Financial Group, Inc. (“Summit”) with and into

October 2, 2023 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 September 29, 2023 Date of Report (date of earliest event reported) Burke & Herbert

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 September 29, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organizatio

October 2, 2023 EX-99.5

Consent of H. Charles Maddy, III

Exhibit 99.5 Consent of Person Named as About to Become Director In accordance with Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a person who is anticipated to become a director of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) following the consummation of the merger of Summit Financial Group, Inc. (“Summit”) with and into

October 2, 2023 EX-99.11

Consent of Charles

Exhibit 99.11 Consent of Person Named as About to Become Director In accordance with Rule 438 under the Securities Act of 1933, as amended, the undersigned hereby consents to being named as a person who is anticipated to become a director of Burke & Herbert Financial Services Corp. (“Burke & Herbert”) following the consummation of the merger of Summit Financial Group, Inc. (“Summit”) with and into

August 29, 2023 425

On August 25, 2023, Summit Financial Group, Inc. (“Summit”) filed a copy of a presentation made available to employees of Summit under Rule 425 and Rule 14a-12 with the United States Securities and Exchange Commission (the “Rule 425 Filing”). The Rul

Filed by Summit Financial Group, Inc. Pursuant to Rule 425 under the Securities Act of 1933 And deemed filed pursuant to Rule 14a-12 Under the Securities Exchange Act of 1934 Subject Company: Summit Financial Group, Inc. Commission File No.: 0-16587 Date: August 29, 2023 On August 25, 2023, Summit Financial Group, Inc. (“Summit”) filed a copy of a presentation made available to employees of Summit

August 29, 2023 425

On August 25, 2023, Summit Financial Group, Inc. (“Summit”) filed a copy of a presentation made available to customers of Summit under Rule 425 and Rule 14a-12 with the United States Securities and Exchange Commission (the “Rule 425 Filing”). The Rul

Filed by Summit Financial Group, Inc. Pursuant to Rule 425 under the Securities Act of 1933 And deemed filed pursuant to Rule 14a-12 Under the Securities Exchange Act of 1934 Subject Company: Summit Financial Group, Inc. Commission File No.: 0-16587 Date: August 29, 2023 On August 25, 2023, Summit Financial Group, Inc. (“Summit”) filed a copy of a presentation made available to customers of Summit

August 25, 2023 425

ir.burkeandherbertbank.com burkeandherbertbank.com Coming Together to Create an Exceptional Community Bank Customer Packet Filed by Burke & Herbert Financial Services Corp. (Commission File No. 001-41633) Pursuant to Rule 425 under the Securities Act

ir.burkeandherbertbank.com burkeandherbertbank.com Coming Together to Create an Exceptional Community Bank Customer Packet Filed by Burke & Herbert Financial Services Corp. (Commission File No. 001-41633) Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: Summit Financial Group, Inc. (Commission

August 25, 2023 425

ir.burkeandherbertbank.com burkeandherbertbank.com Coming Together to Create an Exceptional Community Bank Team Member Packet Filed by Burke & Herbert Financial Services Corp. (Commission File No. 001-41633) Pursuant to Rule 425 under the Securities

ir.burkeandherbertbank.com burkeandherbertbank.com Coming Together to Create an Exceptional Community Bank Team Member Packet Filed by Burke & Herbert Financial Services Corp. (Commission File No. 001-41633) Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: Summit Financial Group, Inc. (Commissi

August 25, 2023 EX-2.1

Agreement and Plan of Merger, dated as of August 24, 2023, by and between Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc.*

mergeragreement AGREEMENT AND PLAN OF REORGANIZATION between BURKE & HERBERT FINANCIAL SERVICES CORP.

August 25, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 24, 2023 Date of Report (date of earliest event reported) Burke & Herbert Fi

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 August 24, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

August 25, 2023 EX-99.2

Exh. 5.8(b)-1 EXHIBIT 5.8(b) To the Agreement and Plan of Reorganization FORM OF BHRB AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of August 24, 2023, is by and among BURKE & HERBERT FINANCIAL SERVICES CORP., a Virginia co

Exh. 5.8(b)-1 EXHIBIT 5.8(b) To the Agreement and Plan of Reorganization FORM OF BHRB AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of August 24, 2023, is by and among BURKE & HERBERT FINANCIAL SERVICES CORP., a Virginia corporation (“BHRB”), SUMMIT FINANCIAL GROUP, INC., a West Virginia corporation (“SMMF”), and the undersigned shareholder of BHRB (“Shareholder”). All c

August 25, 2023 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 24, 2023 Date of Report (date of earliest event reported) Burke & Herbert Fi

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 August 24, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

August 25, 2023 EX-99.2

Exh. 5.8(b)-1 EXHIBIT 5.8(b) To the Agreement and Plan of Reorganization FORM OF BHRB AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of August 24, 2023, is by and among BURKE & HERBERT FINANCIAL SERVICES CORP., a Virginia co

exhibit992 Exh. 5.8(b)-1 EXHIBIT 5.8(b) To the Agreement and Plan of Reorganization FORM OF BHRB AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of August 24, 2023, is by and among BURKE & HERBERT FINANCIAL SERVICES CORP., a Virginia corporation (“BHRB”), SUMMIT FINANCIAL GROUP, INC., a West Virginia corporation (“SMMF”), and the undersigned shareholder of BHRB (“Sharehold

August 25, 2023 EX-99.1

Ex. 5.8(a)-1 EXHIBIT 5.8(a) To the Agreement and Plan of Reorganization FORM OF SMMF AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of August 24, 2023, is by and among BURKE & HERBERT FINANCIAL SERVICES CORP., a Virginia cor

exhibit991 Ex. 5.8(a)-1 EXHIBIT 5.8(a) To the Agreement and Plan of Reorganization FORM OF SMMF AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of August 24, 2023, is by and among BURKE & HERBERT FINANCIAL SERVICES CORP., a Virginia corporation (“BHRB”), SUMMIT FINANCIAL GROUP, INC., a West Virginia corporation (“SMMF”), and the undersigned shareholder of SMMF (“Shareholde

August 25, 2023 EX-99.1

Ex. 5.8(a)-1 EXHIBIT 5.8(a) To the Agreement and Plan of Reorganization FORM OF SMMF AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of August 24, 2023, is by and among BURKE & HERBERT FINANCIAL SERVICES CORP., a Virginia cor

exhibit991 Ex. 5.8(a)-1 EXHIBIT 5.8(a) To the Agreement and Plan of Reorganization FORM OF SMMF AFFILIATE AGREEMENT THIS AFFILIATE AGREEMENT (the “Agreement”), dated as of August 24, 2023, is by and among BURKE & HERBERT FINANCIAL SERVICES CORP., a Virginia corporation (“BHRB”), SUMMIT FINANCIAL GROUP, INC., a West Virginia corporation (“SMMF”), and the undersigned shareholder of SMMF (“Shareholde

August 25, 2023 EX-2.1

Agreement and Plan of Merger, dated as of August 24, 2023, by and between Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc.*

mergeragreement AGREEMENT AND PLAN OF REORGANIZATION between BURKE & HERBERT FINANCIAL SERVICES CORP.

August 24, 2023 EX-99.1

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Merger of Equals ALEXANDRIA, Va., August 24, 2023 /PRNewswire/ ‐‐ Burke & Herbert Financial Services Corp. (“Burke & Herbert”) (Nasdaq: BHRB) and Summit Financial Grou

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Merger of Equals ALEXANDRIA, Va., August 24, 2023 /PRNewswire/ ‐‐ Burke & Herbert Financial Services Corp. (“Burke & Herbert”) (Nasdaq: BHRB) and Summit Financial Group, Inc. (“Summit”) (Nasdaq: SMMF) today announced they have entered into a definitive agreement under which Summit will merge with and into Burke & He

August 24, 2023 EX-99.1

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Merger of Equals ALEXANDRIA, Va., August 24, 2023 /PRNewswire/ ‐‐ Burke & Herbert Financial Services Corp. (“Burke & Herbert”) (Nasdaq: BHRB) and Summit Financial Grou

Burke & Herbert Financial Services Corp. and Summit Financial Group, Inc. Announce Merger of Equals ALEXANDRIA, Va., August 24, 2023 /PRNewswire/ ‐‐ Burke & Herbert Financial Services Corp. (“Burke & Herbert”) (Nasdaq: BHRB) and Summit Financial Group, Inc. (“Summit”) (Nasdaq: SMMF) today announced they have entered into a definitive agreement under which Summit will merge with and into Burke & He

August 24, 2023 EX-99.2

Burke & Herbert Financial Services Corp. (Nasdaq: BHRB) Merger of Equals with Summit Financial Group, Inc. (Nasdaq: SMMF) August 24, 2023 2 Forward-looking Statements This presentation includes "forward-looking statements" within the meaning of the P

Burke & Herbert Financial Services Corp. (Nasdaq: BHRB) Merger of Equals with Summit Financial Group, Inc. (Nasdaq: SMMF) August 24, 2023 2 Forward-looking Statements This presentation includes "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act

August 24, 2023 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 24, 2023 Date of Report (date of earliest event reported) Burke & Herbert Fi

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 August 24, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

August 24, 2023 EX-99.2

Burke & Herbert Financial Services Corp. (Nasdaq: BHRB) Merger of Equals with Summit Financial Group, Inc. (Nasdaq: SMMF) August 24, 2023 2 Forward-looking Statements This presentation includes "forward-looking statements" within the meaning of the P

Burke & Herbert Financial Services Corp. (Nasdaq: BHRB) Merger of Equals with Summit Financial Group, Inc. (Nasdaq: SMMF) August 24, 2023 2 Forward-looking Statements This presentation includes "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act

August 24, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 24, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization)

August 11, 2023 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR o 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 001

July 28, 2023 EX-99.1

1 2Q23 Update (Nasdaq: BHRB) July 2023 2 Cautionary Statement Regarding Forward Looking Information This presentation contains statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward looking statements are neith

1 2Q23 Update (Nasdaq: BHRB) July 2023 2 Cautionary Statement Regarding Forward Looking Information This presentation contains statements within the meaning of the Private Securities Litigation Reform Act of 1995.

July 28, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 28, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 00

July 28, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 28, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 00

July 28, 2023 EX-99.1

Burke & Herbert Financial Services Corp. Announces Second Quarter 2023 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces Second Quarter 2023 Results and Declares Common Stock Dividend For Immediate Release July 28, 2023 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company”) (Nasdaq: BHRB) reported financial results for the quarter ended June 30, 2023. In addition, at its meeting on July 27, 2023, the board of directors declared a $0.53 per share r

May 31, 2023 10-Q

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

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR o 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 00

May 31, 2023 EX-10.1

Form of RSU Award Agreement under the 2023 SIP

BURKE & HERBERT FINANCIAL SERVICES CORP. 2023 STOCK INCENTIVE PLAN NOTICE OF GRANT OF TIME-BASED RESTRICTED STOCK UNITS AWARD Burke & Herbert Financial Services Corp., pursuant to its 2023 Stock Incentive Plan (the “Plan”), hereby grants to the individual listed below (the “Participant”) this award of Restricted Stock Units. The Restricted Stock Units described in this Notice of Grant of Time-Base

May 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 26, 2023 Date of Report (date of earliest event reported) Burke & Herbert Finan

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 May 26, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 001

May 26, 2023 EX-FILING FEES

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Burke & Herbert Financial Services Corp.

May 26, 2023 EX-99.1

Burke & Herbert Financial Services Corp. 2023 Employee Stock Purchase Plan

BURKE & HERBERT FINANCIAL SERVICES CORP. 2023 EMPLOYEE STOCK PURCHASE PLAN 1.Purpose. The purpose of the Burke & Herbert Financial Services Corp. 2023 Employee Stock Purchase Plan is to provide employees of the Company and its Participating Subsidiaries with an opportunity to acquire a proprietary interest in the Company through the purchase of shares of Common Stock. The Company intends that the

May 26, 2023 EX-99.2

Burke & Herbert Financial Services Corp. 2023 Stock Incentive Plan

BURKE & HERBERT FINANCIAL SERVICES CORP. 2023 STOCK INCENTIVE PLAN Section 1. Purpose; Definitions. The purposes of the Burke & Herbert Financial Services Corp. 2023 Stock Incentive Plan (as amended from time to time, the “Plan”) are to: (a) enable Burke & Herbert Financial Services Corp. (the “Company”) and its affiliated companies to recruit and retain highly qualified employees, directors and c

May 26, 2023 S-8

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

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

May 26, 2023 EX-99.1

Earnings Presentation, dated May

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April 28, 2023 EX-99.1

Burke & Herbert Financial Services Corp. Announces First Quarter 2023 Results and Declares Common Stock Dividend

Burke & Herbert Financial Services Corp. Announces First Quarter 2023 Results and Declares Common Stock Dividend For Immediate Release April 28, 2023 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company”) (Nasdaq: BHRB) reported financial results for the quarter ended March 31, 2023. In addition, at its meeting on April 27, 2023, the board of directors declared a $0.53 per share

April 28, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 28, 2023 Date of Report (date of earliest event reported) Burke & Herbert Fin

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 April 28, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 0

April 25, 2023 EX-99.1

Burke & Herbert Financial Services Corp. Announces Effectiveness of Registration Statement on Form 10 and Listing on Nasdaq Capital Market®

Burke & Herbert Financial Services Corp. Announces Effectiveness of Registration Statement on Form 10 and Listing on Nasdaq Capital Market® April 25, 2023 Alexandria, VA – Burke & Herbert Financial Services Corp. (the “Company”) (Nasdaq: BHRB), the bank holding company for Burke & Herbert Bank & Trust Company, announced that its Registration Statement on Form 10 has been declared effective by the

April 25, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 25, 2023 Date of Report (date of earliest event reported) Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter) Virginia (State or other jurisdiction of incorporation or organization) 0

April 21, 2023 10-12B/A

As filed with the Securities and Exchange Commission on April 21, 2023

As filed with the Securities and Exchange Commission on April 21, 2023 File No. 001-41633 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 3 to FORM 10 GENERAL FORM FOR REGISTRATION OF SECURITIES Pursuant to Section 12(b) or (g) of The Securities Exchange Act of 1934 Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter)

April 21, 2023 CORRESP

Burke & Herbert Financial Services Corp. 100 S. Fairfax Street Alexandria, VA 22314 April 21, 2023

Burke & Herbert Financial Services Corp. 100 S. Fairfax Street Alexandria, VA 22314 April 21, 2023 BY EDGAR TRANSMISSION U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, NE Washington, D.C. 20549 Attn: Michael Henderson, Cara Lubit, Todd K. Schiffman and James Lopez RE: Burke & Herbert Financial Services Corp. Registration Statement on Form 10 File No. 001-4163

April 20, 2023 CORRESP

Gregory F. Parisi

Troutman Pepper Hamilton Sanders LLP 401 9th Street, NW, Suite 1000 Washington, DC 20004 troutman.

April 20, 2023 10-12B/A

As filed with the Securities and Exchange Commission on April 20, 2023

As filed with the Securities and Exchange Commission on April 20, 2023 File No. 001-41633 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to FORM 10 GENERAL FORM FOR REGISTRATION OF SECURITIES Pursuant to Section 12(b) or (g) of The Securities Exchange Act of 1934 Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter)

April 3, 2023 10-12B/A

As filed with the Securities and Exchange Commission on April 3, 2023

As filed with the Securities and Exchange Commission on April 3, 2023 File No. 001-41633 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM 10 GENERAL FORM FOR REGISTRATION OF SECURITIES Pursuant to Section 12(b) or (g) of The Securities Exchange Act of 1934 Burke & Herbert Financial Services Corp. (Exact name of registrant as specified in its charter)

April 3, 2023 CORRESP

Gregory F. Parisi

Troutman Pepper Hamilton Sanders LLP 401 9th Street, NW, Suite 1000 Washington, DC 20004 troutman.

April 3, 2023 EX-4.1

Specimen certificate for the Common Stock of Burke & Herbert Financial Services Corp.

Exhibit 4.1

April 3, 2023 EX-3.2

Articles of Amendment to the Articles of Incorporation of Burke & Herbert Financial Services Corp

Exhibit 3.2 COMMONWEALTH OF VIRGINIA STATE CORPORATION COMMISSION AT RICHMOND, OCTOBER 28, 2022 The State Corporation Commission has found the articles of amendment submitted on behalf of Burke & Herbert Financial Services Corp. to comply with the requirements of law, and confirms payment of all required fees. Therefore, it is ORDERED that this CERTIFICATE OF AMENDMENT be issued and admitted to re

February 28, 2023 EX-10.1

2019 Stock Incentive Plan

Exhibit 10.1 BURKE & HERBERT BANK & TRUST CO. 2019 STOCK INCENTIVE PLAN 1. Purposes of the Plan. The purposes of this Plan are to attract and retain the best available personnel, to provide additional incentives to Employees, Directors and Consultants and to promote the success of the Company’s business. 2. Definitions. The following definitions shall apply as used herein and in the individual Awa

February 28, 2023 EX-21.1

Subsidiaries of Burke & Herbert Financial Services Corp.

Exhibit 21.1 Subsidiaries of Burke & Herbert Financial Services Corp. Name of Subsidiary State of Incorporation Burke & Herbert Bank & Trust Company Virginia

February 28, 2023 EX-3.1

Articles of Incorporation of Burke & Herbert Financial Services Corp.

Exhibit 3.1 Commonwealth of Virginia State Corporation Commission Office of the Clerk Commonwealth of Virginia State Corporation Entity ID: 11337362 Filing Num ber: 2209144 953458 Fili ng Date/Time: 09/14/2022 11:21 AM Effective Date/Time: 09/14/2022 11 :21 AM ARTICLES OF INCORPORATION OF BURKE & HERBERT FINANCIAL SERVICES CORP. This is to certify that we do hereby associate ourselves to establish

February 28, 2023 EX-10.3

2021 Amended & Restated Nonqualified Deferred Compensation Plan for Employers & Directors

Exhibit 10.3 BURKE & HERBERT BANK & TRUST COMPANY NONQUALIFIED DEFERRED COMPENSATION PLAN FOR EMPLOYEES & DIRECTORS Amended & Restated Effective as of January 1, 2021 INTRODUCTION The Compensation Committee of the Board of Directors of Burke & Herbert Bank & Trust Company (the "Company") has adopted this Nonqualified Deferred Compensation Plan for Employees & Directors, as amended and restated eff

February 28, 2023 EX-10.4

Amended & Restated Employment Agreement, dated as of September 1, 2022, by and among Burke & Herbert Bank & Trust, and David P. Boyle

Exhibit 10.4 Execution Version AMENDED AND RESTATED EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (this "Agreement") is dated this 1" day of September, 2022 (the "Effective Date") by and between Burke & Herbert Bank & Trust Company, a Virginia community bank (the "Bank"), and David P. Boyle ("Executive"). This Agreement collectively refers to the Bank and the Executive as the

February 28, 2023 EX-3.2

Bylaws of Burke & Herbert Financial Services Corp.

Exhibit 3.2 BYLAWS OF BURKE & HERBERT FINANCIAL SERVICES CORP. Effective as September 22, 2022 ARTICLE I OFFICES SECTION 1. Principal Office. The principal office of the Corporation shall be located at the Main Office at the southeast intersection of King Street and Fairfax Street in the City of Alexandria, Virginia. The Board of Directors shall have the power and authority to change the location

February 28, 2023 10-12B

As filed with the Securities and Exchange Commission on February 28, 2023

As filed with the Securities and Exchange Commission on February 28, 2023 File No.

February 28, 2023 EX-10.6

Amended & Restated Employment Agreement, dated as of September 1, 2022, by and among Burke & Herbert Bank & Trust, and Roy E. Halyama

Exhibit 10.6 Execution Version AMENDED AND RESTATED EMPLOYMENT AGREEMENT This Amended and Restated Employment Agreement (this "Agreement") is dated this 1" day of September, 2022 (the "Effective Date) by and between Burke & Herbert Bank & Trust Company, a Virginia community bank (the "Bank"), and Roy E. Halyama ("Executive). This Agreement collectively refers to the Bank and the Executive as the "

February 28, 2023 EX-10.7

First Amendment to Employment Agreement, dated as of October 27, 2022,, by and among Burke & Herbert Bank & Trust, and Roy E. Halyama

Exhibit 10.7 FIRST AMENDMENT TO EMPLOYMENT AGREEMENT This Amendment is made as of this}27th day of October, 2022 (the "Amendment"), between Burke & Herbert Bank & Trust Company, a Virginia community bank (the "Bank"), and Roy E. Halyama ("Executive"). WITNESSETH WHEREAS, the Bank and Executive are parties to an Employment Agreement, dated as of September 1, 2022 (the "Agreement"); and WHEREAS, eff

February 28, 2023 EX-10.8

Change in Control Agreement, dated as of June 16th 2014, by and among Burke & Herbert Bank & Trust and Jeffrey A. Welch

Exhibit 10.8 CHANGE IN CONTROL AGREEMENT OF JEFFREY A. WELCH This Change in Control Agreement ("Agreement") is made and entered into as of the 16" day of June 2014, by and between Burke & Herbert Bank, a corporation doing business in the Commonwealth of Virginia ("B&HB" or "the Bank"), and Jeffrey A. Welch ("Executive") (collectively, the "parties"). WHEREAS, Executive commenced employment with B&

February 28, 2023 EX-10.9

Burke & Herbert Bank & Trust Supplemental Executive Retirement Plan, effective January 23, 2014

Exhibit 10.9 BURKE & HERBERT BANK & TRUST COMPANY SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN As Amended and Restated Effective January 23, 2014 INTRODUCTION The Board of Directors of Burke & Herbert Bank & Trust Company adopted the Supplemental Executive Retirement Plan, effective as of January 1, 2010 (the "Plan"), for the purpose of attracting and retaining qualified individuals to serve as officers

February 28, 2023 EX-10.2

2019 Stock Incentive Plan as Amended October 27, 2022

Exhibit 10.2 BURKE & HERBERT FINANCIAL SERVICES CORP. 2019 STOCK INCENTIVE PLAN AS AMENDED OCTOBER 27, 2022 1. Purposes of the Plan. The purposes of this Plan are to attract and retain the best available personnel, to provide additional incentives to Employees, Directors and Consultants and to promote the success of the Company’s business. 2. Definitions. The following definitions shall apply as u

February 28, 2023 EX-10.5

First Amendment to Employment Agreement, dated as of October 27, 2022, by and among Burke & Herbert Bank & Trust, and David P. Boyle

Exhibit 10.5 FIRST AMENDMENT TO EMPLOYMENT AGREEMENT This Amendment is made as of this 27th day of October, 2022 (the Amendment"), between Burke & Herbert Bank & Trust Company, a Virginia community bank (the "Bank"), and David P. Boyle ("Executive"). WITNESSETH WHEREAS, the Bank and Executive are parties to an Employment Agreement, dated as of September 1, 2022 (the "Agreement"); and WHEREAS, effe

February 28, 2023 EX-4.1

Specimen certificate for the Common Stock of Burke & Herbert Financial Services Corp.

Exhibit 4.1 slide1 slide2

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