Comparable stake leader
T. Rowe Price Investment Management, Inc.
SEC ownership of John Marshall Bancorp, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001710482.
Disclosed value leader
T. Rowe Price Investment Management, Inc.
Comparable rows
50/50
Latest evidence
17 Jun 2026
- Public ticker
- JMSB on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
T. Rowe Price Investment Management, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
T. Rowe Price Investment Management, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
17 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001710482
- Issuer location
- Reston, VA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of John Marshall Bancorp, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
T. Rowe Price Investment ...
Disclosed value leader
T. Rowe Price Investment ...
Comparable rows
50/50
Latest evidence
17 Jun 2026
13F
13D/G
3/4/5
Lead comparable stake: 14%
13D/G row: T. Rowe Price Investment Management, Inc.
Showing 1-8 of 50 holder rows.
Quick read
T. Rowe Price Investment Management, Inc. leads the comparable SEC ownership view at 14%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens T. Rowe Price Investment Management, Inc.'s linked filing trail.
Comparable ownership
Top 5
T. Rowe Price Investment Manageme...
14%
Jonathan Craig Kinney
4.3%
Foster Michael T.
2.4%
Philip W. Allin
1.3%
Philip Chase
0.76%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. |
13F
13D/G
Company
|
14%
from 13D/G
|
$39,861,000
1,965,531 shares
|
— | 31 Mar 2026 |
| Jonathan Craig Kinney |
3/4/5
Director
|
4.3%
|
$12,891,250
613,194 shares
|
+$125,607 | 03 Jun 2026 |
| Foster Michael T. |
3/4/5
Director
|
2.4%
|
$6,413,887
337,573 shares
|
— | 16 Dec 2025 |
| Philip W. Allin |
3/4/5
Director
|
1.3%
|
$3,557,047
187,213 shares
|
— | 16 Dec 2025 |
| Philip Chase |
3/4/5
Director
|
0.76%
|
$2,036,705
107,195 shares
|
— | 16 Dec 2025 |
| Oscar Leland Mahan |
3/4/5
Director
|
0.67%
|
$1,997,450
94,981 shares
|
+$17,029 | 03 Jun 2026 |
| Christopher W. Bergstrom |
3/4/5
CHIEF EXECUTIVE OFFICER, Director
|
0.53%
|
$1,518,302
74,867 shares
|
— | 17 Jun 2026 |
| Subhash Garg |
3/4/5
Director
|
0.51%
|
$1,374,422
72,338 shares
|
— | 16 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$487,710.
Buys
$487,710
Insiders: 4
Sells
$0
Insiders: 0
Net
+$487,710
Shares: +25,421
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 25,421
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 2,479 | 0 | $52,133 | $0 | +$52,133 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 4,045 | 0 | $77,238 | $0 | +$77,238 |
| 9-12 | 18,897 | 0 | $358,338 | $0 | +$358,338 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-16 of 16 reporting-owner rows connected to John Marshall Bancorp, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
16
Largest Forms 3/4/5 holder
Jonathan Craig Kinney
Net 12M change
+$487,710
Latest report
17 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Jonathan Craig Kinney | Director | $12,891,250 | +$125,607 | +0.98% | Mixed | 03 Jun 2026 |
| Jean Edelman | Director | $7,555,086 | Mixed | 26 Apr 2022 | ||
| Foster Michael T. | Director | $6,413,887 | Mixed | 16 Dec 2025 | ||
| Ronald J. Gordon | Director | $3,557,266 | Mixed | 20 Dec 2022 | ||
| Philip W. Allin | Director | $3,557,047 | Mixed | 16 Dec 2025 | ||
| William Ridenour | Chief Banking Officer | $3,112,152 | Mixed | 26 Apr 2022 | ||
| Philip Chase | Director | $2,036,705 | Mixed | 16 Dec 2025 | ||
| Oscar Leland Mahan | Director | $1,997,450 | +$17,029 | +0.86% | Filing P/S | 03 Jun 2026 |
| Carl E. Dodson | Chief Operating Officer & Cro | $1,821,250 | Mixed | 27 May 2022 | ||
| Christopher W. Bergstrom | CHIEF EXECUTIVE OFFICER, Director | $1,518,302 | Mixed | 17 Jun 2026 | ||
| Lim Nguonly | Director | $1,481,867 | Mixed | 17 Dec 2024 | ||
| Subhash Garg | Director | $1,374,422 | Mixed | 16 Dec 2025 | ||
| Kent Carstater | Chief Financial Officer | $1,068,161 | +$92,156 | +9.4% | Mixed | 16 Dec 2025 |
| Michael A. Garcia | Director | $689,187 | +$252,918 | +58% | Mixed | 16 Dec 2025 |
| Andrew Peden | Chief Banking Officer | $567,587 | Mixed | 16 Dec 2025 | ||
| Kelly Jo Bell | Chief Operating Officer | $28,472 | Mixed | 19 Dec 2025 |
Recent insider transactions for John Marshall Bancorp, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Christopher W. Bergstrom | JMSB | Common Stock | Gift | 32,720 | 32,720 | 17 Jun 2026 | By trust | |||
| Christopher W. Bergstrom | JMSB | Common Stock | Gift | -43.7% | -32,720 | 42,147 | 17 Jun 2026 | Direct | ||
| Oscar Leland Mahan | JMSB | Common Stock | Purchase | 0.19% | $3,764 | $21.03 | 179 | 94,981 | 03 Jun 2026 | Direct |
| Jonathan Craig Kinney | JMSB | Common Stock | Purchase | 0.44% | $25,404 | $21.03 | 1,208 | 278,688 | 03 Jun 2026 | See footnote |
| Jonathan Craig Kinney | JMSB | Common Stock | Purchase | 0.33% | $22,965 | $21.03 | 1,092 | 328,882 | 03 Jun 2026 | Direct |
| Kelly Jo Bell | JMSB | Common Stock | Tax liability | -2.7% | -37 | 1,333 | 19 Dec 2025 | Direct | ||
| Kelly Jo Bell | JMSB | Common Stock | Tax liability | -2% | -28 | 1,370 | 17 Dec 2025 | Direct | ||
| Andrew Peden | JMSB | Common Stock | Tax liability | -0.73% | -194 | 26,560 | 17 Dec 2025 | Direct | ||
| Foster Michael T. | JMSB | Common Stock | Award | 0.57% | 1,901 | 337,573 | 16 Dec 2025 | Direct | ||
| Jonathan Craig Kinney | JMSB | Common Stock | Award | 0.66% | 2,138 | 327,790 | 16 Dec 2025 | Direct | ||
| Oscar Leland Mahan | JMSB | Common Stock | Award | 2.05% | 1,901 | 94,802 | 16 Dec 2025 | Direct | ||
| Subhash Garg | JMSB | Common Stock | Award | 4.49% | 1,901 | 44,213 | 16 Dec 2025 | Direct | ||
| Michael A. Garcia | JMSB | Common Stock | Award | 5.53% | 1,901 | 36,273 | 16 Dec 2025 | Direct | ||
| Philip W. Allin | JMSB | Common Stock | Award | 6.77% | 1,901 | 29,963 | 16 Dec 2025 | Direct | ||
| Philip Chase | JMSB | Common Stock | Award | 6.26% | 1,901 | 32,275 | 16 Dec 2025 | Direct | ||
| Andrew Peden | JMSB | Common Stock | Award | 9.75% | 2,376 | 26,754 | 16 Dec 2025 | Direct | ||
| Kent Carstater | JMSB | Common Stock | Award | 5.81% | 3,088 | 56,219 | 16 Dec 2025 | Direct | ||
| Christopher W. Bergstrom | JMSB | Common Stock | Award | 14.5% | 9,502 | 74,867 | 16 Dec 2025 | Direct | ||
| Jonathan Craig Kinney | JMSB | Common Stock | Purchase | 0.15% | $9,815 | $19.63 | 500 | 325,652 | 05 Dec 2025 | Direct |
| Jonathan Craig Kinney | JMSB | Common Stock | Purchase | 0.42% | $26,003 | $19.33 | 1,345 | 325,152 | 02 Dec 2025 | Direct |
| Jonathan Craig Kinney | JMSB | Common Stock | Purchase | 0.15% | $9,450 | $18.90 | 500 | 323,807 | 06 Nov 2025 | Direct |
| Jonathan Craig Kinney | JMSB | Common Stock | Purchase | 0.25% | $14,965 | $18.71 | 800 | 323,307 | 05 Nov 2025 | Direct |
| Jonathan Craig Kinney | JMSB | Common Stock | Purchase | 0.12% | $7,580 | $18.95 | 400 | 322,507 | 04 Nov 2025 | Direct |
| Jonathan Craig Kinney | JMSB | Common Stock | Purchase | 0.16% | $9,425 | $18.85 | 500 | 322,107 | 31 Oct 2025 | Direct |
| Kent Carstater | JMSB | Common Stock | Purchase | 10.4% | $92,156 | $18.43 | 5,000 | 53,131 | 31 Jul 2025 | Direct |
| Michael A. Garcia | JMSB | Common Stock | Purchase | 21.8% | $118,310 | $19.20 | 6,162 | 34,372 | 30 Jul 2025 | Direct |
| Michael A. Garcia | JMSB | Common Stock | Purchase | 17.9% | $82,099 | $19.20 | 4,276 | 28,210 | 29 Jul 2025 | Direct |
| Michael A. Garcia | JMSB | Common Stock | Purchase | 13% | $52,508 | $19.11 | 2,747 | 23,934 | 28 Jul 2025 | Direct |
| Oscar Leland Mahan | JMSB | Common Stock | Purchase | 0.77% | $13,265 | $18.63 | 712 | 92,901 | 15 Jul 2025 | Direct |
* marks a reported price that did not pass the local price check.