Insider Transactions Reported by 16 Insiders of John Marshall Bancorp, Inc.

Symbol: JMSB on Nasdaq
Location: Reston, VA

Quick Takeaways

JMSB - John Marshall Bancorp, Inc. has 16 insiders with reported activity on this page.
Net insider value flow over the last year: +$411,622.
Recent transaction rows are available for direct filing-level review.

What Changed

Buy value: $499,178; sell value: $87,556.
Net share flow: +21,463.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Net insider flow leans to buying over the last 12 months. Net value: +$411,622.

Buys

$499,178

Shares: 26,596

Insiders: 4

Sells

$87,556

Shares: 5,133

Insiders: 1

Net

+$411,622

Shares: +21,463

Insiders: 3

Window (months)	Buy shares	Sell shares	Buy $	Sell $	Net $
0-3	0	0	$0	$0	$0
3-6	2,345	0	$45,268	$0	+$45,268
6-9	1,700	0	$31,970	$0	+$31,970
9-12	22,551	5,133	$421,940	$87,556	+$334,384

John Marshall Bancorp, Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Jonathan Craig Kinney	Director	$11,606,986	+$140,840	+1.2%	Mixed	16 Dec 2025
Jean Edelman	Director	$7,555,086			Mixed	26 Apr 2022
Foster Michael T.	Director	$6,413,887			Mixed	16 Dec 2025
Ronald J. Gordon	Director	$3,557,266			Mixed	20 Dec 2022
Philip W. Allin	Director	$3,557,047			Mixed	16 Dec 2025
William Ridenour	Chief Banking Officer	$3,112,152			Mixed	26 Apr 2022
Philip Chase	Director	$2,036,705			Mixed	16 Dec 2025
Carl E. Dodson	Chief Operating Officer & Cro	$1,821,250			Mixed	27 May 2022
Oscar Leland Mahan	Director	$1,801,238	+$13,265	+0.74%	Mixed	16 Dec 2025
Lim Nguonly	Director	$1,481,867			Mixed	17 Dec 2024
Christopher W. Bergstrom	CHIEF EXECUTIVE OFFICER, Director	$1,422,473			Mixed	16 Dec 2025
Subhash Garg	Director	$1,374,422			Mixed	16 Dec 2025
Kent Carstater	Chief Financial Officer	$1,068,161	+$92,156	+9.4%	Mixed	16 Dec 2025
Michael A. Garcia	Director	$689,187	+$252,918	+58%	Mixed	16 Dec 2025
Andrew Peden	Chief Banking Officer	$567,587			Mixed	16 Dec 2025
Kelly Jo Bell	Chief Operating Officer	$28,472			Mixed	19 Dec 2025

Top shareholders of John Marshall Bancorp, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
T. Rowe Price Investment Management, Inc.	13F 13D/G	Company	14% from 13D/G	1,962,672	$39,234,000	—	31 Dec 2025	13F 13D/G
BlackRock, Inc.	13F	Company	6.1%	871,630	$17,423,883	—	31 Dec 2025	13F
VANGUARD GROUP INC	13F	Company	4.9%	692,614	$13,845,354	—	31 Dec 2025	13F
Jonathan Craig Kinney	3/4/5	Director	4.3%	610,894	$11,606,986	+$140,840	16 Dec 2025	3/4/5
FJ Capital Management LLC	13F	Company	2.9%	412,945	$8,254,771	—	31 Dec 2025	13F
Jean Edelman	3/4/5	Director	— class O/S missing	321,493	$7,555,086	—	26 Apr 2022	3/4/5
TOTH FINANCIAL ADVISORY CORP	13F	Company	2.6%	374,479	$7,485,841	—	31 Dec 2025	13F
EVERMAY WEALTH MANAGEMENT LLC	13F	Company	2.5%	348,424	$6,964,996	—	31 Dec 2025	13F
Foster Michael T.	3/4/5	Director	2.4%	337,573	$6,413,887	—	16 Dec 2025	3/4/5
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	2.1%	295,356	$5,905,513	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	1.7%	244,105	$4,879,659	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	1.5%	213,201	$4,261,888	—	31 Dec 2025	13F
MAI Capital Management	13F	Company	1.4%	198,114	$3,960,299	—	31 Dec 2025	13F
Ronald J. Gordon	3/4/5	Director	— class O/S missing	151,373	$3,557,266	—	20 Dec 2022	3/4/5
Philip W. Allin	3/4/5	Director	1.3%	187,213	$3,557,047	—	16 Dec 2025	3/4/5
William Ridenour	3/4/5	Chief Banking Officer	— class O/S missing	132,432	$3,112,152	—	26 Apr 2022	3/4/5
Fourthstone LLC	13F	Company	0.79%	111,874	$2,236,361	—	31 Dec 2025	13F
BROWN ADVISORY INC	13F	Company	0.76%	108,342	$2,165,757	—	31 Dec 2025	13F
Elizabeth Park Capital Advisors, Ltd.	13F	Company	0.74%	105,339	$2,105,727	—	31 Dec 2025	13F
Cresset Asset Management, LLC	13F	Company	0.73%	102,950	$2,057,962	—	31 Dec 2025	13F
Philip Chase	3/4/5	Director	0.76%	107,195	$2,036,705	—	16 Dec 2025	3/4/5
NORTHERN TRUST CORP	13F	Company	0.68%	95,950	$1,918,041	—	31 Dec 2025	13F
Rhino Investment Partners, Inc	13F	Company	0.67%	94,840	$1,895,852	—	31 Dec 2025	13F
Carl E. Dodson	3/4/5	CHIEF OPERATING OFFICER & CRO	— class O/S missing	77,500	$1,821,250	—	27 May 2022	3/4/5
Oscar Leland Mahan	3/4/5	Director	0.67%	94,802	$1,801,238	+$13,265	16 Dec 2025	3/4/5
Lim Nguonly	3/4/5	Director	— class O/S missing	65,137	$1,481,867	—	17 Dec 2024	3/4/5
Christopher W. Bergstrom	3/4/5	CHIEF EXECUTIVE OFFICER, Director	0.53%	74,867	$1,422,473	—	16 Dec 2025	3/4/5
Subhash Garg	3/4/5	Director	0.51%	72,338	$1,374,422	—	16 Dec 2025	3/4/5
Meridian Financial Partners LLC	13F	Company	0.41%	57,619	$1,219,218	—	31 Dec 2025	13F
Kent Carstater	3/4/5	CHIEF FINANCIAL OFFICER	0.4%	56,219	$1,068,161	+$92,156	16 Dec 2025	3/4/5
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.24%	34,657	$692,793	—	31 Dec 2025	13F
Michael A. Garcia	3/4/5	Director	0.26%	36,273	$689,187	+$252,918	16 Dec 2025	3/4/5
Bank of New York Mellon Corp	13F	Company	0.23%	32,458	$648,836	—	31 Dec 2025	13F
CITADEL ADVISORS LLC	13F	Company	0.22%	31,260	$624,888	—	31 Dec 2025	13F
Andrew Peden	3/4/5	CHIEF BANKING OFFICER	0.19%	26,560	$567,587	—	16 Dec 2025	3/4/5
Nuveen, LLC	13F	Company	0.2%	28,304	$565,797	—	31 Dec 2025	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.18%	25,900	$517,741	—	31 Dec 2025	13F
Advisory Services Network, LLC	13F	Company	0.17%	24,350	$486,757	—	31 Dec 2025	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.16%	22,749	$454,752	—	31 Dec 2025	13F
ROYAL BANK OF CANADA	13F	Company	0.15%	21,519	$430,000	—	31 Dec 2025	13F
Snowden Capital Advisors LLC	13F	Company	0.15%	21,017	$420,130	—	31 Dec 2025	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	0.15%	20,713	$414,052	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	0.14%	20,153	$402,869	—	31 Dec 2025	13F
BARCLAYS PLC	13F	Company	0.14%	20,037	$400,539	—	31 Dec 2025	13F
RHUMBLINE ADVISERS	13F	Company	0.12%	16,843	$336,681	—	31 Dec 2025	13F
Mariner, LLC	13F	Company	0.12%	16,568	$331,202	—	31 Dec 2025	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.11%	16,311	$326,061	—	31 Dec 2025	13F
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC	13F	Company	0.12%	16,529	$324,297	—	31 Dec 2025	13F
Quantinno Capital Management LP	13F	Company	0.11%	16,220	$324,238	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.09%	13,117	$262,209	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for John Marshall Bancorp, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
Kelly Jo Bell	JMSB	Common Stock	Tax liability	-2.7%			-37	1,333	19 Dec 2025	Direct
Kelly Jo Bell	JMSB	Common Stock	Tax liability	-2%			-28	1,370	17 Dec 2025	Direct
Andrew Peden	JMSB	Common Stock	Tax liability	-0.73%			-194	26,560	17 Dec 2025	Direct
Foster Michael T.	JMSB	Common Stock	Award	0.57%			1,901	337,573	16 Dec 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Award	0.66%			2,138	327,790	16 Dec 2025	Direct
Oscar Leland Mahan	JMSB	Common Stock	Award	2.05%			1,901	94,802	16 Dec 2025	Direct
Subhash Garg	JMSB	Common Stock	Award	4.49%			1,901	44,213	16 Dec 2025	Direct
Michael A. Garcia	JMSB	Common Stock	Award	5.53%			1,901	36,273	16 Dec 2025	Direct
Philip W. Allin	JMSB	Common Stock	Award	6.77%			1,901	29,963	16 Dec 2025	Direct
Philip Chase	JMSB	Common Stock	Award	6.26%			1,901	32,275	16 Dec 2025	Direct
Andrew Peden	JMSB	Common Stock	Award	9.75%			2,376	26,754	16 Dec 2025	Direct
Kent Carstater	JMSB	Common Stock	Award	5.81%			3,088	56,219	16 Dec 2025	Direct
Christopher W. Bergstrom	JMSB	Common Stock	Award	14.5%			9,502	74,867	16 Dec 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.15%	$9,815	$19.63	500	325,652	05 Dec 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.42%	$26,003	$19.33	1,345	325,152	02 Dec 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.15%	$9,450	$18.90	500	323,807	06 Nov 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.25%	$14,965	$18.71	800	323,307	05 Nov 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.12%	$7,580	$18.95	400	322,507	04 Nov 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.16%	$9,425	$18.85	500	322,107	31 Oct 2025	Direct
Kent Carstater	JMSB	Common Stock	Purchase	10.4%	$92,156	$18.43	5,000	53,131	31 Jul 2025	Direct
Michael A. Garcia	JMSB	Common Stock	Purchase	21.8%	$118,310	$19.20	6,162	34,372	30 Jul 2025	Direct
Michael A. Garcia	JMSB	Common Stock	Purchase	17.9%	$82,099	$19.20	4,276	28,210	29 Jul 2025	Direct
Michael A. Garcia	JMSB	Common Stock	Purchase	13%	$52,508	$19.11	2,747	23,934	28 Jul 2025	Direct
Oscar Leland Mahan	JMSB	Common Stock	Purchase	0.77%	$13,265	$18.63	712	92,901	15 Jul 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.22%	$12,152	$17.36	700	321,607	12 Jun 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.06%	$3,516	$17.58	200	320,907	11 Jun 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.08%	$4,425	$17.70	250	320,707	06 Jun 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.28%	$15,545	$17.27	900	320,457	05 Jun 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.06%	$3,564	$17.47	204	319,557	03 Jun 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.05%	$2,631	$17.31	152	319,353	02 Jun 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.09%	$5,232	$17.44	300	319,201	02 Jun 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.05%	$2,562	$17.31	148	318,901	30 May 2025	Direct
Jonathan Craig Kinney	JMSB	Common Stock	Purchase	0.25%	$13,975	$17.47	800	318,753	28 May 2025	Direct
Oscar Leland Mahan	JMSB	Common Stock	Sale	-5.27%	$87,556	$17.06	-5,133	92,189	05 May 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.