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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 27, 2026

John Marshall Bancorp, Inc.

(Exact name of registrant as specified in its charter)

Virginia

001-41315

81-5424879

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

1943 Isaac Newton Square, Suite 100

Reston, Virginia 20190

(Address, including zip code, of principal executive offices)

Registrant’s telephone number, including area code: (703) 584-0840

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):


	☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
	☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
	☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
	☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class registered		Trading symbol(s)		Name of each exchange on which registered
Common Stock, par value $0.01 per share		JMSB		The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☒

Item 8.01 Other Events.

As more fully described in the attached press release dated October 28, 2026, the Board of Directors of John Marshall Bancorp, Inc. declared a quarterly cash dividend of $0.10 per outstanding share of common stock on October 27, 2026. The dividend will be payable on December 2, 2026 to shareholders of record as of the close of business on November 10, 2026.

A copy of the press release is attached hereto in Exhibit 99.1 and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

Exhibits.



Exhibit No.		Description

99.1		Press Release dated October 28, 2026
104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

","zhKind","complete","JMSB","TBBK","公司与财报","股息","aihot","/items/y6l55f912dkssoabxmz6uljy1","https://www.sec.gov/Archives/edgar/data/1710482/000110465926119386/0001104659-26-119386-index.htm","rss-sec-xbrl","name","SEC · EDGAR 财务披露","kind","rss","firstParty","iconUrl","/api/img-proxy?u=https%3A%2F%2Fwww.sec.gov%2Fthemes%2Fcustom%2Fuswds_sec%2Fassets%2Fimg%2Ffavicons%2Fapple-touch-icon.png&mode=avatar&exp=1793577600&sig=4b4ab60ed7bbc09f","iconSrcSet","/api/img-proxy?u=https%3A%2F%2Fwww.sec.gov%2Fthemes%2Fcustom%2Fuswds_sec%2Fassets%2Fimg%2Ffavicons%2Fapple-touch-icon.png&mode=avatar-48&exp=1793577600&sig=e088f7e0fbd3f246 48w, /api/img-proxy?u=https%3A%2F%2Fwww.sec.gov%2Fthemes%2Fcustom%2Fuswds_sec%2Fassets%2Fimg%2Ffavicons%2Fapple-touch-icon.png&mode=avatar-96&exp=1793577600&sig=18c729d6e21bdeed 96w","changelogVersion","2026-10-01T08:00"]

JOHN MARSHALL BANCORP, INC.

Date: October 28, 2026

/s/ Kent D. Carstater

Kent D. Carstater
Senior Executive Vice President, Chief Financial Officer