John Marshall Bancorp director buys 133 shares

John Marshall Bancorp, Inc. (JMSB) director Philip Chase reported a purchase of 133 shares of Common Stock on August 26, 2026 through reinvestment of cash dividends at $22.96 per share.

Rhea-AI Filing Summary

John Marshall Bancorp, Inc. (JMSB) director Philip Chase reported a purchase of 133 shares of Common Stock on August 26, 2026 through reinvestment of cash dividends at $22.96 per share. Following this transaction, he holds 32,408 shares directly, including 2,706 unvested restricted stock awards, and 74,920 shares indirectly through the Philip R. Chase Revocable Trust over which he has investment control.

Insider Trade Summary

Net Buyer: 133 shares

Net Buy 2 txns

Insider Chase Philip

Role Director

Bought 133 shs ($3K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1, F2	133	$22.96	$3K
holding	Common Stock F3	--	--	--

Holdings After Transaction: Common Stock — 32,408 shares (Direct); Common Stock — 74,920 shares (Indirect, See footnote)

Footnotes (3)

1. F1. Reinvestment of cash dividends.
2. F2. Includes 2,706 shares relating to unvested restricted stock awards issuable upon vesting.
3. F3. Shares owned by the Philip R. Chase Revocable Trust dated July 19, 2016 over which the reporting person has investment control.

Key Figures

Shares purchased: 133 shares of Common Stock Purchase price per share: $22.96 per share Direct holdings after transaction: 32,408 shares +2 more

5 metrics

Shares purchased 133 shares of Common Stock Reinvestment of cash dividends on August 26, 2026

Purchase price per share $22.96 per share Price for 133 JMSB shares acquired via dividend reinvestment

Direct holdings after transaction 32,408 shares Direct JMSB common stock owned by Philip Chase after August 26, 2026

Unvested restricted stock awards included in direct holdings 2,706 shares Unvested restricted stock awards issuable upon vesting included in direct total

Indirect holdings after transaction 74,920 shares JMSB shares owned by the Philip R. Chase Revocable Trust

Key Terms

Reinvestment of cash dividends, unvested restricted stock awards, Revocable Trust, investment control

4 terms

Reinvestment of cash dividends financial

"Reinvestment of cash dividends."

unvested restricted stock awards financial

"Includes 2,706 shares relating to unvested restricted stock awards issuable"

Revocable Trust financial

"Shares owned by the Philip R. Chase Revocable Trust dated July 19, 2016"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

investment control financial

"over which the reporting person has investment control."

FAQ

What insider transaction did Philip Chase report for JMSB?

Philip Chase reported a purchase of 133 JMSB common shares on August 26, 2026 through reinvestment of cash dividends at $22.96 per share.

How many JMSB shares does Philip Chase own directly after this transaction?

After the transaction, Philip Chase owns 32,408 JMSB common shares directly, which includes 2,706 shares relating to unvested restricted stock awards issuable upon vesting.

Does Philip Chase have indirect ownership of JMSB shares?

Yes. Philip Chase has indirect ownership of 74,920 JMSB shares held by the Philip R. Chase Revocable Trust, over which he has investment control.

What was the price per share in Philip Chase’s latest JMSB purchase?

The reported transaction price was $22.96 per JMSB share for the 133 shares acquired through reinvestment of cash dividends on August 26, 2026.

Were Philip Chase’s JMSB shares acquired under a Rule 10b5-1 plan?

No. The filing indicates the Rule 10b5-1 checkbox is not checked, so the reported 133-share dividend reinvestment at $22.96 per share was not affirmed as made under a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/28/2026 - 04:12 PM Accepted by SEC EDGAR 08/28/2026 - 04:12 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Chase Philip

(Last) (First) (Middle)

1943 ISAAC NEWTON SQUARE EAST

SUITE 100

(Street)

RESTON VIRGINIA 20190

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
John Marshall Bancorp, Inc. [ JMSB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/26/2026		P(1)		133	A	$22.96	32,408(2)	D
Common Stock								74,920	I	See footnote(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Reinvestment of cash dividends.

2. Includes 2,706 shares relating to unvested restricted stock awards issuable upon vesting.

3. Shares owned by the Philip R. Chase Revocable Trust dated July 19, 2016 over which the reporting person has investment control.

	/s/ Jacob A. Gruninger, Attorney-in-Fact	08/28/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)