John Marshall Bancorp, Inc.
John Marshall Bancorp, Inc. (JMSB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · JMSB · as of Sep 30, 2025
Ownership Breakdown
68
Institutional Holders
▲ 6 vs Q2
$132.72M
Total Inst. Value
▲ $9.74M vs Q2
14.11M
Shares Outstanding
freeFloat 86.88%
6.70M
13F Shares Held
▲ 71,947 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
JMSB largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. state commercial banks | 2.01M | 14.17% | 14.17% | $39.93B | Nov 14, 2025 | ▼ 3.6K |
BLACKROCK, INC. state commercial banks | 871.1K | 6.12% | 6.12% | $17.26B | Nov 12, 2025 | ▼ 4.0K |
VANGUARD GROUP INC state commercial banks | 649.7K | 4.57% | 4.57% | $12.88B | Nov 7, 2025 | ▼ 5.3K |
FJ CAPITAL MANAGEMENT LLC state commercial banks | 429.9K | 3.02% | 3.02% | $8.52B | Nov 14, 2025 | ▲ 16.6K |
TOTH FINANCIAL ADVISORY CORP state commercial banks | 390.7K | 2.75% | 2.75% | $7.74B | Oct 9, 2025 | ▼ 12.1K |
EVERMAY WEALTH MANAGEMENT LLC state commercial banks | 348.4K | 2.45% | 2.45% | $6.91B | Nov 5, 2025 | ▲ 14.4K |
GEODE CAPITAL MANAGEMENT, LLC state commercial banks | 293.7K | 2.07% | 2.07% | $5.82B | Nov 12, 2025 | ▼ 2.2K |
BANK OF AMERICA CORP /DE/ state commercial banks | 254.3K | 1.79% | 1.79% | $5.04B | Feb 3, 2026 | ▼ 6.7K |
STATE STREET CORP state commercial banks | 212.9K | 1.50% | 1.50% | $4.22B | Nov 14, 2025 | ▲ 701 |
MAI CAPITAL MANAGEMENT state commercial banks | 198.1K | 1.39% | 1.39% | $3.93B | Nov 10, 2025 | ▼ 24.9K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
20
Increased
+125.6K shares3
New Positions
first time holders13
Decreased
−72.5K shares0
Sold Out
fully exitedNet shares change (top 50)
+53.1K
+125.6K / −72.5K
Net new holders
+10
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
JMSB insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
3
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Mahan Oscar Leland director | Jun 3, 2026 | Purchase | 179 | $21.03 | $3.8K | 95.0K | Form 4 ↗ |
Kinney Jonathan Craig director | Jun 3, 2026 | Purchase | 1,092 | $21.03 | $23.0K | 328.9K | Form 4 ↗ |
Kinney Jonathan Craig director | Jun 3, 2026 | Purchase | 1,208 | $21.03 | $25.4K | 278.7K | Form 4 ↗ |
Bell Kelly Jo CHIEF OPERATING OFFICER | Dec 19, 2025 | Tax Withhold | 37 | $21.36 | $790.32 | 1.3K | Form 4 ↗ |
Foster Michael T director | Dec 16, 2025 | Award | 1,901 | — | — | 337.6K | Form 4 ↗ |
Kinney Jonathan Craig director | Dec 16, 2025 | Award | 2,138 | — | — | 327.8K | Form 4 ↗ |
Mahan Oscar Leland director | Dec 16, 2025 | Award | 1,901 | — | — | 94.8K | Form 4 ↗ |
Garg Subhash director | Dec 16, 2025 | Award | 1,901 | — | — | 44.2K | Form 4 ↗ |
GARCIA MICHAEL A director | Dec 16, 2025 | Award | 1,901 | — | — | 36.3K | Form 4 ↗ |
Allin Philip W director | Dec 16, 2025 | Award | 1,901 | — | — | 30.0K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
John Marshall Bancorp, Inc. (JMSB) is primarily owned by institutional investors, who hold approximately 47.5% of total shares outstanding. Company insiders own approximately 13.12%, while retail and public investors account for the remaining 39.42%.
The largest institutional shareholder of John Marshall Bancorp, Inc. is T. ROWE PRICE INVESTMENT MANAGEMENT, INC., holding approximately 2.01 million shares — equal to 14.17% of outstanding shares — as of September 30, 2025.
A total of 68 institutional investors currently hold JMSB stock, with a combined institutional value of approximately $132,716,860 as of the most recent 13F filing period.
Frequently asked questions
JMSB ownershipJohn Marshall Bancorp, Inc. (JMSB) is primarily owned by institutional investors, who hold approximately 47.5% of shares. The largest shareholder is T. ROWE PRICE INVESTMENT MANAGEMENT, INC. with a 14.17% stake. Company insiders hold 13.12%. Data sourced from SEC Form 13F as of September 30, 2025.