John Marshall Bancorp, Inc. (JMSB)
$23.29+$0.70 (+3.10%) Today
John Marshall Bancorp Inc is a bank holding company. Through its banking subsidiary, it offers banking products and financial services to small to medium-sized businesses, professional corporations, non-profits, and individuals. The products and services offered by the company include commercial checking, savings, and money market accounts, certificates of deposit, treasury and cash management services, commercial and industrial loans, commercial real estate loans, residential and commercial construction and development loans, online banking, and mobile banking. The firm serves local businesses, professionals, individuals, and families throughout the Washington, D.C. metropolitan area.
https://www.johnmarshallbank.comSEC filings for JMSB on EDGAR
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 6 | 4,969 | $109K |
| Bona-fide gift | 2 | 65,440 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
34 Form 4 filings on record, the earliest from Nov 19, 2024, newest first. Filing history page 2 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oscar Leland Mahan | Open-market sale | Common Stock | 1,392 | $22.00 | $31K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 142 | $22.01 | $3K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 846 | $22.02 | $19K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 108 | $22.03 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 216 | $22.03 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 2 | $22.04 | $44 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 40 | $22.04 | $882 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 101 | $22.09 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 200 | $22.13 | $4K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 105 | $22.16 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 89 | $22.17 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 102 | $22.23 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 100 | $22.25 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 2,129 | $22.36 | $48K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 28 | $22.73 | $636 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 444 | $22.40 | $10K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 117 | $22.42 | $3K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 70 | $22.43 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 23 | $22.48 | $517 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 13 | $22.53 | $293 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 200 | $22.54 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 10 | $22.55 | $226 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 195 | $22.56 | $4K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 100 | $22.61 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 500 | $22.61 | $11K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 980 | $22.62 | $22K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 424 | $22.63 | $10K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 384 | $22.64 | $9K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 135 | $22.65 | $3K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 188 | $22.65 | $4K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 66 | $23.49 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 66 | $23.53 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 1,055 | $23.55 | $25K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 17 | $23.58 | $401 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 14 | $23.60 | $330 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 8 | $23.64 | $189 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 167 | $23.65 | $4K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 119 | $23.66 | $3K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 293 | $23.67 | $7K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 16 | $23.70 | $379 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 153 | $23.70 | $4K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 100 | $23.71 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 1 | $23.72 | $24 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 8 | $23.74 | $190 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 7 | $23.80 | $167 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 141 | $23.82 | $3K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 15 | $23.83 | $357 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 1 | $23.84 | $24 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 7 | $23.86 | $167 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 15 | $23.86 | $358 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 5 | $23.87 | $119 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 8 | $23.91 | $191 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 222 | $24.10 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 2 | $24.12 | $48 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 101 | $24.12 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 8 | $24.23 | $194 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 200 | $23.93 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 200 | $23.98 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 69 | $24.00 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 217 | $24.03 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 100 | $24.05 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 100 | $24.09 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 12 | $24.10 | $289 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 100 | $24.11 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 440 | $24.14 | $11K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 100 | $24.15 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 1 | $24.17 | $24 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 82 | $24.18 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 3 | $24.19 | $73 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 300 | $24.21 | $7K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 3 | $24.22 | $73 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 370 | $24.24 | $9K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 28 | $24.26 | $679 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 32 | $24.29 | $777 | |
| Oscar Leland Mahan | Open-market purchase | Common Stock | 501 | $24.31 | $12K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 100 | $24.32 | $2K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 494 | $24.45 | $12K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 200 | $24.46 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 200 | $24.48 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 200 | $24.49 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 200 | $24.53 | $5K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 139 | $24.61 | $3K | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 2 | $24.62 | $49 | |
| Oscar Leland Mahan | Open-market sale | Common Stock | 36 | $24.66 | $888 | |
| Jonathan Craig Kinney | Open-market sale | Common Stock | 10 | $24.28 | $243 |
John Marshall Bancorp, Inc. (JMSB) had 5 insider filings in the last 90 days, with the most recent on 2026-08-28. The full record for JMSB runs to 34 Form 4 filings, the earliest from 2024-11-19. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
6 insider purchases of JMSB were filed in the last 90 days, totaling $109K.
No insider sales of JMSB were filed in the last 90 days. 87 sales are on record for this company.
This page tracks JMSB Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
