Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

John Marshall Bancorp, Inc.

CIK 0001710482JMSB· quarter ending 2026-06-30

Shares outstanding

14,112,134

as of 2026-07-30 · 10-Q cover page, filed 2026-08-07

Held by 13F filers

6,963,277

49.3% of shares outstanding

Holders

+15 vs 2026-03-31 · 22 new, 7 exited

Value

$151.8M

shares +1.3% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-07, as of 2026-07-30)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	JMSB · NASDAQ	14,112,134	6,963,277	49.3%	94	47805L101

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	47805L101	COM	94	6,963,277	14,112,134	49.3%	$151.8M	—	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (94 of 94 · 47805L101)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	T. Rowe Price Investment Management, Inc.	1,965,531	13.93%	$42.8M	—
2	BlackRock, Inc.	984,411	6.98%	$21.5M	+109,048 (+12.5%)
3	VANGUARD CAPITAL MANAGEMENT LLC	534,570	3.79%	$11.7M	-2,806 (-0.5%)
4	EVERMAY WEALTH MANAGEMENT LLC	351,149	2.49%	$7.7M	+1,180 (+0.3%)
5	TOTH FINANCIAL ADVISORY CORP	336,253	2.38%	$7.3M	-32,368 (-8.8%)
6	GEODE CAPITAL MANAGEMENT, LLC	316,184	2.24%	$6.9M	+20,880 (+7.1%)
7	STATE STREET CORP	218,522	1.55%	$4.8M	+1,124 (+0.5%)
8	BANK OF AMERICA CORP /DE/	178,112	1.26%	$3.9M	-28,599 (-13.8%)
9	MAI Capital Management	133,192	0.94%	$2.9M	-64,924 (-32.8%)
10	BROWN ADVISORY INC	108,342	0.77%	$2.4M	—
11	Elizabeth Park Capital Advisors, Ltd.	105,339	0.75%	$2.3M	—
12	Cresset Asset Management, LLC	104,494	0.74%	$2.3M	-1 (-0.0%)
13	RENAISSANCE TECHNOLOGIES LLC	103,700	0.73%	$2.3M	+72,100 (+228.2%)
14	NORTHERN TRUST CORP	99,995	0.71%	$2.2M	+473 (+0.5%)
15	MARSHALL WACE, LLP	98,090	0.70%	$2.1M	+66,618 (+211.7%)
16	ACADIAN ASSET MANAGEMENT LLC	91,906	0.65%	$2.0M	+69,193 (+304.6%)
17	MACKENZIE FINANCIAL CORP	88,203	0.63%	$1.9M	NEW
18	VANGUARD PORTFOLIO MANAGEMENT LLC	84,517	0.60%	$1.8M	+11,632 (+16.0%)
19	VANGUARD FIDUCIARY TRUST CO	82,862	0.59%	$1.8M	+3,354 (+4.2%)
20	Wealthspire Advisors, LLC	64,333	0.46%	$1.4M	+192 (+0.3%)
21	Meridian Financial Partners LLC	57,619	0.41%	$1.3M	—
22	GOLDMAN SACHS GROUP INC	55,470	0.39%	$1.2M	+24,068 (+76.6%)
23	CITADEL ADVISORS LLC	46,416	0.33%	$1.0M	+26,031 (+127.7%)
24	Quantinno Capital Management LP	45,500	0.32%	$992K	+20,255 (+80.2%)
25	AQR CAPITAL MANAGEMENT LLC	42,222	0.30%	$920K	+20,462 (+94.0%)
26	Selective Wealth Management, Inc.	41,103	0.29%	$912K	NEW
27	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	38,463	0.27%	$838K	+1,866 (+5.1%)
28	MORGAN STANLEY	36,244	0.26%	$790K	+14,945 (+70.2%)
29	Bank of New York Mellon Corp	33,954	0.24%	$740K	+2,747 (+8.8%)
30	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	30,689	0.22%	$669K	NEW
31	Nuveen, LLC	28,908	0.20%	$630K	+420 (+1.5%)
32	MILLENNIUM MANAGEMENT LLC	27,586	0.20%	$601K	NEW
33	Trexquant Investment LP	24,310	0.17%	$530K	NEW
34	DIMENSIONAL FUND ADVISORS LP	24,221	0.17%	$528K	NEW
35	ROYAL BANK OF CANADA	22,461	0.16%	$490K	+1,618 (+7.8%)
36	Advisory Services Network, LLC	21,550	0.15%	$470K	-3,169 (-12.8%)
37	NewEdge Advisors, LLC	21,086	0.15%	$460K	NEW
38	Snowden Capital Advisors LLC	21,016	0.15%	$458K	-1 (-0.0%)
39	Mariner, LLC	17,836	0.13%	$389K	+1,164 (+7.0%)
40	Man Group plc	16,796	0.12%	$366K	NEW
41	RHUMBLINE ADVISERS	15,590	0.11%	$340K	-1,042 (-6.3%)
42	Blue Edge Capital, LLC	15,500	0.11%	$338K	NEW
43	GSA CAPITAL PARTNERS LLP	14,985	0.11%	$327K	+2,279 (+17.9%)
44	KFA Private Wealth Group, LLC	14,865	0.11%	$324K	—
45	RAYMOND JAMES FINANCIAL INC	14,631	0.10%	$319K	NEW
46	XTX Topco Ltd	14,077	0.10%	$307K	NEW
47	SG Americas Securities, LLC	13,898	0.10%	$303K	NEW
48	WELLS FARGO & COMPANY/MN	13,505	0.10%	$294K	+5,785 (+74.9%)
49	Lido Advisors, LLC	12,505	0.09%	$273K	NEW
50	DEUTSCHE BANK AG\	11,005	0.08%	$240K	+1,416 (+14.8%)
51	UBS Group AG	10,735	0.08%	$234K	-307 (-2.8%)
52	MERCER GLOBAL ADVISORS INC /ADV	10,674	0.08%	$233K	NEW
53	OCCUDO QUANTITATIVE STRATEGIES LP	10,624	0.08%	$232K	NEW
54	Russell Investments Group, Ltd.	10,282	0.07%	$224K	+9,235 (+882.0%)
55	Quadrature Capital Ltd	9,274	0.07%	$202K	NEW
56	OSAIC HOLDINGS, INC.	8,433	0.06%	$184K	-1,978 (-19.0%)
57	MetLife Investment Management, LLC	7,245	0.05%	$158K	—
58	JPMORGAN CHASE & CO	6,288	0.04%	$138K	+1,143 (+22.2%)
59	CITIGROUP INC	6,130	0.04%	$134K	+5,213 (+568.5%)
60	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	5,805	0.04%	$127K	-215 (-3.6%)
61	NEW YORK STATE COMMON RETIREMENT FUND	4,667	0.03%	$102K	—
62	LOS ANGELES CAPITAL MANAGEMENT LLC	4,640	0.03%	$101K	NEW
63	Police & Firemen's Retirement System of New Jersey	4,522	0.03%	$99K	+2,042 (+82.3%)
64	Vanguard Global Advisers, LLC	4,234	0.03%	$92K	—
65	BARCLAYS PLC	3,698	0.03%	$81K	+328 (+9.7%)
66	Atlantic Union Bankshares Corp	3,375	0.02%	$74K	—
67	Tower Research Capital LLC (TRC)	2,256	0.02%	$49K	+508 (+29.1%)
68	STRS OHIO	1,600	0.01%	$35K	—
69	Ameritas Investment Partners, Inc.	1,260	0.01%	$27K	—
70	Legal & General Group Plc	1,165	0.01%	$25K	—
71	Versant Capital Management, Inc	475	0.00%	$10K	—
72	NISA INVESTMENT ADVISORS, LLC	331	0.00%	$7K	—
73	Arax Advisory Partners	318	0.00%	$7K	+308 (+3080.0%)
74	Sterling Capital Management LLC	254	0.00%	$6K	-164 (-39.2%)
75	GAMMA Investing LLC	246	0.00%	$5K	—
76	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	174	0.00%	$4K	-510 (-74.6%)
77	Quarry LP	135	0.00%	$3K	NEW
78	HARBOR CAPITAL ADVISORS, INC.	134	0.00%	$3K	—
79	Optiver Holding B.V.	126	0.00%	$3K	—
80	Larson Financial Group LLC	99	0.00%	$2K	NEW
81	Allworth Financial LP	99	0.00%	$2K	+89 (+890.0%)
82	FMR LLC	94	0.00%	$2K	+14 (+17.5%)
83	IFP Advisors, Inc	44	0.00%	$959	+40 (+1000.0%)
84	Essential Partners LLC	42	0.00%	$916	+29 (+223.1%)
85	EverSource Wealth Advisors, LLC	22	0.00%	$480	-69 (-75.8%)
86	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	19	0.00%	$414	—
87	ROTHSCHILD INVESTMENT LLC	13	0.00%	$283	+11 (+550.0%)
88	Farther Finance Advisors, LLC	9	0.00%	$196	NEW
89	Basecamp Wealth Advisors LLC	8	0.00%	$174	+3 (+60.0%)
90	True Wealth Design, LLC	6	0.00%	$131	+5 (+500.0%)
91	Covestor Ltd	3	0.00%	$0	-1 (-25.0%)
92	Wealth Enhancement Trust Services, Inc.	1	0.00%	$22	NEW
93	Keating Financial Advisory Services, Inc.	1	0.00%	$22	—
94	SJS Investment Consulting Inc.	1	0.00%	$22	NEW

Exited since 2026-03-31 (7 filers; largest 7 shown)

FJ Capital Management LLC	−412,273
Rhino Investment Partners, Inc	−118,580
Fourthstone LLC	−108,178
JANE STREET GROUP, LLC	−10,986
CWM, LLC	−397
Root Financial Partners, LLC	−6
Sunbelt Securities, Inc.	−1

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
T. Rowe Price Investment Management, Inc.	SCHEDULE 13G/A	2025-02-14	2024-12-31	1,943,902	13.7%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.