Additional Information About the Proposed Merger and Where to Find It
In connection with the proposed transaction between Eagle Financial Services, Inc. (the “Company”) and John Marshall Bancorp, Inc. (“John
Marshall”), John Marshall filed with the SEC a registration statement on Form S-4 (File No. 333-299276) on October 2, 2026, as amended (the
“Registration Statement”), which includes the joint proxy statement of John Marshall and the Company that also constitutes a prospectus of John Marshall (the “Definitive Joint Proxy Statement/Prospectus”). The Registration
Statement was declared effective on October 16, 2026, and each of John Marshall and the Company commenced mailing of the Definitive Joint Proxy Statement/Prospectus to their respective shareholders on or about October 16, 2026. Each of
John Marshall and the Company may file with the SEC other relevant documents concerning the proposed transaction.
INVESTORS AND SHAREHOLDERS OF JOHN
MARSHALL AND THE COMPANY AND THEIR RESPECTIVE AFFILIATES ARE URGED TO READ CAREFULLY AND IN THEIR ENTIRETY THE REGISTRATION STATEMENT, THE DEFINITIVE JOINT PROXY STATEMENT/PROSPECTUS, AND ANY OTHER RELEVANT DOCUMENTS FILED OR TO BE FILED WITH THE
SEC IN CONNECTION WITH THE PROPOSED TRANSACTION, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT JOHN MARSHALL, THE COMPANY AND THE PROPOSED TRANSACTION.
Investors and shareholders are able to obtain a free copy of the Registration Statement, the Definitive Joint Proxy Statement/Prospectus, and other relevant
documents filed with the SEC containing information about John Marshall and the Company, without charge, at the SEC’s website, www.sec.gov. Copies of documents filed with the SEC by John Marshall will be made available free of charge in the
“Investor Relations” section of John Marshall’s website, investor.johnmarshallbank.com, or can be obtained by requesting by mail at John Marshall Bancorp, Inc., 1943 Isaac Newton Square East, Suite 100, Reston, Virginia 20190,
Attention: Corporate Secretary. Copies of documents filed with the SEC by the Company will be made available free of charge in the “Investor Relations” section of the Company’s website, investors.bankofclarke.bank, or can be
obtained by requesting by mail at Eagle Financial Services, Inc., 2 East Main St, P.O. Box 391, Berryville, Virginia 22611, Attention: Secretary. The information on John Marshall’s or the Company’s respective websites is not, and shall
not be deemed to be, a part of this communication or incorporated into other filings either company makes with the SEC.
Participants in the
Solicitation
The Company, John Marshall and certain of their respective directors and executive officers may be deemed to be participants in the
solicitation of proxies from shareholders of the Company and shareholders of John Marshall in respect of the proposed transaction under the rules of the SEC. Information regarding the Company’s directors and executive officers is available in
its definitive proxy statement for its 2026 annual meeting of shareholders, which was filed with the SEC on April 8, 2026, and certain other documents filed by the Company with the SEC. Information regarding John Marshall’s directors and
executive officers is available in its definitive proxy statement for its 2026 annual meeting