Company · Ownership research

John Marshall Bancorp, Inc. JMSB

CIK 0001710482

Form 4 transactions dated Nov 1, 2023 to Nov 8, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 32 rows; the complete set is available through the API.

Insider filings on file run through Aug 28, 2026.

Insider purchases & sales

Purchased: $964.76K
Sold: $771.86K

Nov 1, 2023 – Aug 28, 2026
Available records · partial months are marked ·

202510 of 30 preview events · 32 available in 2025

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 5, 2025	Kinney Jonathan Craig Director	Purchase	$9.81K 500 shares bought	0.15% added Direct holding	▾
Dec 2, 2025	Kinney Jonathan Craig Director	Purchase	$26.00K 1,345 shares bought	0.42% added Direct holding	▾
Nov 6, 2025	Kinney Jonathan Craig Director	Purchase	$9.45K 500 shares bought	0.15% added Direct holding	▾
Nov 5, 2025	Kinney Jonathan Craig Director	Purchase	$14.96K 800 shares bought	0.25% added Direct holding	▾
Nov 4, 2025	Kinney Jonathan Craig Director	Purchase	$7.58K 400 shares bought	0.12% added Direct holding	▾
Oct 31, 2025	Kinney Jonathan Craig Director	Purchase	$9.43K 500 shares bought	0.16% added Direct holding	▾
Jul 31, 2025	Carstater Kent CHIEF FINANCIAL OFFICER	Purchase	$92.16K 5,000 shares bought	10.39% added Direct holding	▾
Jul 30, 2025	GARCIA MICHAEL A Director	Purchase	$118.31K 6,162 shares bought	21.84% added Direct holding	▾
Jul 29, 2025	GARCIA MICHAEL A Director	Purchase	$82.10K 4,276 shares bought	17.87% added Direct holding	▾
Jul 28, 2025	GARCIA MICHAEL A Director	Purchase	$52.51K 2,747 shares bought	12.97% added Direct holding	▾

Showing 30 / 32 record groups in 2025. The complete set is available through the API.

John Marshall Bancorp, Inc. · JMSB

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 32 purchase / sale groups and 24 of 24 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"JMSB","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.