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John Marshall Bancorp, Inc.

JMSB
Exchange
Nasdaq
Industry
State Commercial Banks
SEC CIK
0001710482

In the last 90 days, John Marshall Bancorp, Inc. insiders filed 2 open-market purchases and 0 sales; 95 institutions reported holding it in 13F filings for Q2 2026, worth $152.6M in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding John Marshall Bancorp, Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of JMSB: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders74180+7
Shares6.83M692.6K6.91M+771.8K (+12.6%)
Value$136.6M$13.8M$140.1M+$17.4M (+14.2%)

1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (11)

Institutions that held John Marshall Bancorp, Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to JMSB in Q1 2026
InstitutionSharesValue% of portfolio
Vanguard Capital Management LLC537,376$10.9M0.00%
Vanguard Fiduciary Trust Co79,508$1.61M0.00%
Vanguard Portfolio Management LLC72,885$1.48M0.00%
Wealthspire Advisors, LLC64,141$1.30M0.01%
Marshall Wace, LLP31,472$638.3K0.00%
KFA Private Wealth Group, LLC14,865$301.5K0.07%
Vanguard Global Advisers, LLC4,234$85.9K0.00%
UBS Asset Management Americas Inc19$3850.00%
Root Financial Partners, LLC6$1220.00%
Basecamp Wealth Advisors LLC5$1010.00%
Keating Financial Advisory Services, Inc.1$200.00%

Sold out (4)

Institutions that held John Marshall Bancorp, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of JMSB in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Wealth Enhancement Advisory Services, LLC16,529$324.3K
Millennium Management LLC13,117$262.2K
Hingham Institution for Savings5,000$100.0K
Amalgamated Bank397$8.00K

Not filed for Q1 2026 yet (1)

Institutions that held John Marshall Bancorp, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding JMSB in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc692,614$13.8M