John Marshall Bancorp, Inc.

State Commercial Banks

JMSB Banks & Consumer Finance People in Banks & Consumer Finance SEC CIK 0001710482 ↗

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Market capitalisation
$325.28M
14,112,134 shares Covers every share class this company has on file.
Insiders on file
9
people who have filed Form 3, 4 or 5 naming this issuer
Value of insider-held stock
$37.52M
from the holdings reported on Forms 3/4/5; this figure has no separate as-of date on file
Insider-held share of market cap
11.54%
insider-held value divided by market capitalisation

What John Marshall Bancorp, Inc. reports

Revenue and net income below are for fiscal period FY2025, the period label carried by this company’s own annual XBRL filings to the SEC. Fiscal years do not line up between companies — one company’s FY2026 can cover much the same months as another’s FY2025 — so compare the periods, not just the numbers.

Revenue
—
No revenue figure: this company’s filings tag profit, but no single revenue total.
Net income
$21.23M
FY2025 profit for the period, from this company’s own annual XBRL filings to the SEC
Employees
140
Yahoo Finance
Why the revenue box is blank

US GAAP has no one “total revenue” tag that every filer uses. A bank reports interest and dividend income separately from non-interest income; closed-end funds, blank-cheque companies and some property trusts report the same way; and a company that has not sold anything yet — a drug developer still in trials, for instance — files no revenue at all. Adding two differently defined income lines together would produce a number that appears in no filing, so we publish a revenue figure only where the filing tags one annual, US-dollar revenue fact we can point at. A blank here means no such tag, not that we failed to look.

Where the employee count comes from

Headcount comes from Yahoo Finance, not from a filing. The date beside it is the day we retrieved the figure — it is not the date the company counted its staff, and Yahoo does not publish that date. Unlike the SEC filings behind the other figures on this page, this one carries no open licence, so we publish the number and nothing else from that source.

Insiders at John Marshall Bancorp, Inc.

Shares is what each person last reported holding here.

Everyone below has filed at least one insider report against this company.

Value is that share count priced at the same closing price used everywhere else on this site. A row priced from only some of a person’s securities says so — we do not quietly present a partial sum as a complete one.

Rows are grouped by the role each person reports.

The role comes from the relationship boxes a person ticks on their own insider filings — officer, director, ten per cent owner — not from anything we infer. Somebody who is both an officer and a director appears once, in the combined group, so the row count still matches the figure at the top of this page. Where no filing states a role we say so instead of guessing one.

People who file insider reports against John Marshall Bancorp, Inc..
Insider Reported role Shares Value Last action
Officers 1
Kent Carstater CFO 56,219 $1.31M A Grant or award Dec 16, 2025 position reported
Officers who also sit on the board 1
Christopher W. Bergstrom CEO 74,867 $1.75M G Bona fide gift Jun 17, 2026 position reported
Directors 7
Jonathan Craig Kinney Board Member 610,894 $14.27M P Open-market purchase Aug 26, 2026 position reported
Michael T Foster Board Member 337,573 $7.89M A Grant or award Dec 16, 2025 position reported
Philip W Allin Board Member 187,213 $4.37M A Grant or award Dec 16, 2025 position reported
Philip Chase Board Member 107,195 $2.50M P Open-market purchase Aug 26, 2026 position reported
Oscar Leland Mahan Board Member 94,802 $2.21M P Open-market purchase Jun 3, 2026 position reported
Subhash Garg Board Member 72,338 $1.69M A Grant or award Dec 16, 2025 position reported
Lim Nguonly Board Member 65,137 $1.52M A Grant or award Dec 17, 2024 position reported

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

John Marshall Bancorp, Inc. (JMSB) filed a Form 8-K under Item 5.02 (directors and officers) on Sep 8, 2026

Director or officer change filing

The company filed a current report that includes Item 5.02, the item used to report departures, elections or appointments of directors and certain officers, and related pay arrangements. We record only that this filing exists: we have not extracted who left, who joined or whose role changed. Open the filing to read it.

Form 8-K filed Sep 8, 2026, items 1.01, 5.02, 7.01, 9.01. SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Oscar Leland Mahan sold 1,733 John Marshall Bancorp, Inc. (JMSB) shares for $29,461 on May 5, 2025

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Oscar Leland Mahan sold 1,733 John Marshall Bancorp, Inc. (JMSB) shares for $29,461 on May 5, 2025
Date Insider Transaction Shares Price Value Filing
May 5, 2025 Oscar Leland Mahan S Open-market sale 1,733 held after: 95,589 $17.00 $29,461 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Oscar Leland Mahan sold 3,521 John Marshall Bancorp, Inc. (JMSB) shares for $78,228 on Nov 20, 2024

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Oscar Leland Mahan sold 3,521 John Marshall Bancorp, Inc. (JMSB) shares for $78,228 on Nov 20, 2024
Date Insider Transaction Shares Price Value Filing
Nov 20, 2024 Oscar Leland Mahan S Open-market sale 1,392 held after: 99,109 $22.00 $30,624 SEC filing ↗
Nov 20, 2024 Oscar Leland Mahan S Open-market sale 2,129 held after: 94,929 $22.36 $47,604 SEC filing ↗

Total of the rows above: $78,228, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Oscar Leland Mahan sold 1,055 John Marshall Bancorp, Inc. (JMSB) shares for $24,845 on Nov 19, 2024

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Oscar Leland Mahan sold 1,055 John Marshall Bancorp, Inc. (JMSB) shares for $24,845 on Nov 19, 2024
Date Insider Transaction Shares Price Value Filing
Nov 19, 2024 Oscar Leland Mahan S Open-market sale 1,055 held after: 101,929 $23.55 $24,845 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Recent insider transactions

Of the 252 rows we hold, 81 are open-market purchases (P) and 133 open-market sales (S) — the only codes we count as buying or selling.

The rest — awards, shares withheld to pay tax, option exercises, gifts and so on — follow from an employment contract or a transfer arranged off-market, not from a decision to buy or sell, so counting them would turn this into a pay table.

A price of 0.00 is a real reported figure on gifts (G) and share awards (A) — not a gap in our data.

Insider transactions disclosed to the SEC for John Marshall Bancorp, Inc., newest first, each with the filing behind it.
Date Insider Transaction Shares Price Value Filing
Aug 26, 2026 Philip Chase P Open-market purchase 133 $22.96 $3.1K SEC filing ↗
Aug 26, 2026 Jonathan Craig Kinney P Open-market purchase 1,238 $22.92 $28.4K SEC filing ↗
Aug 26, 2026 Jonathan Craig Kinney P Open-market purchase 1,119 $22.92 $25.6K SEC filing ↗
Jun 17, 2026 Christopher W. Bergstrom G Bona fide gift 32,720 $0.00 $0 SEC filing ↗
Jun 17, 2026 Christopher W. Bergstrom G Bona fide gift 32,720 $0.00 $0 SEC filing ↗
Jun 3, 2026 Oscar Leland Mahan P Open-market purchase 179 $21.03 $3.8K SEC filing ↗
Jun 3, 2026 Jonathan Craig Kinney P Open-market purchase 1,208 $21.03 $25.4K SEC filing ↗
Jun 3, 2026 Jonathan Craig Kinney P Open-market purchase 1,092 $21.03 $23.0K SEC filing ↗
Dec 16, 2025 Oscar Leland Mahan A Grant or award 1,901 $0.00 $0 SEC filing ↗
Dec 16, 2025 Subhash Garg A Grant or award 1,901 $0.00 $0 SEC filing ↗
Dec 16, 2025 Philip Chase A Grant or award 1,901 $0.00 $0 SEC filing ↗
Dec 16, 2025 Kent Carstater A Grant or award 3,088 $0.00 $0 SEC filing ↗
Dec 16, 2025 Christopher W. Bergstrom A Grant or award 9,502 $0.00 $0 SEC filing ↗
Dec 16, 2025 Philip W Allin A Grant or award 1,901 $0.00 $0 SEC filing ↗
Dec 16, 2025 Michael T Foster A Grant or award 1,901 $0.00 $0 SEC filing ↗
Dec 16, 2025 Jonathan Craig Kinney A Grant or award 2,138 $0.00 $0 SEC filing ↗
Dec 5, 2025 Jonathan Craig Kinney P Open-market purchase 500 $19.63 $9.8K SEC filing ↗
Dec 2, 2025 Jonathan Craig Kinney P Open-market purchase 445 $19.40 $8.6K SEC filing ↗
Dec 2, 2025 Jonathan Craig Kinney P Open-market purchase 900 $19.30 $17.4K SEC filing ↗
Nov 6, 2025 Jonathan Craig Kinney P Open-market purchase 500 $18.90 $9.5K SEC filing ↗
Nov 5, 2025 Jonathan Craig Kinney P Open-market purchase 500 $18.71 $9.4K SEC filing ↗
Nov 5, 2025 Jonathan Craig Kinney P Open-market purchase 300 $18.70 $5.6K SEC filing ↗
Nov 4, 2025 Jonathan Craig Kinney P Open-market purchase 400 $18.95 $7.6K SEC filing ↗
Oct 31, 2025 Jonathan Craig Kinney P Open-market purchase 500 $18.85 $9.4K SEC filing ↗
Jul 31, 2025 Kent Carstater P Open-market purchase 2 $18.24 $36 SEC filing ↗

From SEC Form 4 filings. Every row links to the filing it came from. How we calculate this.

What a Form 4 is

The report an officer, director or large shareholder must file after trading their own company’s stock.

Subsidiaries — 1 legal entity

Subsidiaries of John Marshall Bancorp, Inc.

1 legal entity named in the subsidiary exhibit filed with this company’s most recent 10-K. . Filing on SEC.gov.

This is not the full list. SEC rules only require a company to name its significant subsidiaries.

What that leaves out

Smaller entities are left out of the exhibit entirely. A short list here means a short exhibit — it does not mean the company owns nothing else. Nothing on this page is inferred: every name below is copied from the filing.

Subsidiaries John Marshall Bancorp, Inc. names in its most recent annual report, with the place each one is organised.
Subsidiary Organised in
John Marshall Bank Virginia
What counts as a subsidiary

A subsidiary is a separate legal entity this company controls; it is not the same thing as a brand, a division or an office. These entities do not file with the SEC in their own right, so there is no separate page to open for them.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Sources and technical notes

Every figure on this page comes from filings to the U.S. SEC via EDGAR. Nothing here is estimated, and nothing is taken from press coverage or company websites.

Share count: cover page of the latest filing (dei:EntityCommonStockSharesOutstanding), taken from John Marshall Bancorp, Inc.’s own filings and multiplied by our closing price. Full method.

What that share count means

the share count the company itself prints on the cover of its most recent filing, as of the date it signed that filing.

We do not take a market cap from a data vendor, and we do not estimate one: the figure is a share count from John Marshall Bancorp, Inc.’s own SEC filings multiplied by the closing price we hold for the same stock.