John Marshall Bancorp, Inc. insider trading

Every open-market purchase and sale by John Marshall Bancorp, Inc.'s officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

No open-market insider trades reported in the last five years.

Does following John Marshall Bancorp, Inc.’s insiders pay?

From May 3, 2022 to August 28, 2026, 8 insiders reported 27 open-market purchases and 24 sales not made under a pre-set plan in John Marshall Bancorp, Inc. Twelve months after each purchase was reported, the shares were −14.3% against the S&P 500 on average (median −8.6%), over 23 purchases with a full year of prices; 26% beat the index. After sales, the shares moved −30.0% against the index over 12 months (a negative figure means selling was the right call). Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on March 16, 2023 into $10,626 by November 2, 2026, +1.7% a year. It held shares 100% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $20,023 (+21.2% a year), and held throughout $20,023 (+21.2%).

Copying John Marshall Bancorp, Inc.'s insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by John Marshall Bancorp, Inc.'s insiders from March 16, 2023, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 100% of the time.

John Marshall Bancorp, Inc.: each insider's record
Insider	Role	Purchases	12 months after their purchases	Beat the S&P 500	Sales	12 months after their sales	Latest report
Kinney Jonathan Craig	Director	20	−19.6% (16)	19%	0	—	August 28, 2026
Nguonly Lim	Director	0	—	—	10	−32.2% (10)	December 11, 2024
Dodson Carl E	CHIEF OPERATING OFFICER & CRO	0	—	—	7	−29.6% (7)	May 27, 2022
Mahan Oscar Leland	Director	2	−14.5% (2)	0%	5	−23.0% (5)	July 17, 2025
Carstater Kent	CHIEF FINANCIAL OFFICER	2	+1.5% (2)	50%	0	—	August 1, 2025
Chase Philip	Director	0	—	—	2	−38.4% (2)	November 14, 2022
Garcia Michael A	Director	2	+6.7% (2)	100%	0	—	July 31, 2025
Peden Andrew	CHIEF BANKING OFFICER	1	−2.7% (1)	0%	0	—	April 28, 2025

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

When several insiders traded John Marshall Bancorp, Inc.

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of John Marshall Bancorp, Inc. in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After the 1 buying crowd with six months of prices, it averaged −14.5% against the index. After 1 selling crowd, +6.4%. One company's history is too short to judge by; the test across every company is the better guide.

Month	Crowd	3 months on, vs S&P 500	6 months	12 months
April 30, 2025	3 buying	−5.5%	−14.5%	−4.0%
May 31, 2022	3 selling	−5.1%	+6.4%	−29.0%

Colours show whether the crowd was right: green when buyers were followed by a rise above the index, or sellers by a fall below it. Total returns from the month end; past patterns are not a forecast.

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