JMSB · John Marshall Bancorp, Inc. · Shareholders & Ownership

$23.07 -0.06 (-0.26%) At close · Nov 12

Russell 2000 member Rebalance outlook locked

Market Cap

$325.56M

14.11M

Volume · Nov 12 119.29K Avg daily vol (3M) 136.51K

Every disclosed holder of JMSB in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns JMSB

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	104	7,104,656	50.35%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	7,007,278	49.66%	Rest
Registered funds (N-PORT, not summed)	102	2,911,407	20.63%	No

Shares outstanding: 14,111,934, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of JMSB

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	T. Rowe Price Investment Management, Inc. 13F CIK 1897612 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,965,531	13.93%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
2	T. Rowe Price Small-Cap Value Fund, Inc. Fund S000002121 · Registered fund · Jun 30, 2026 T. ROWE PRICE SMALL-CAP VALUE FUND, INC., not summed	1,206,850	8.55%	-5,888	Jun 30, 2026	T. ROWE PRICE SMALL-CAP VALUE FUND, INC., not summed
3	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	984,411	6.98%	+109,048	Jun 30, 2026	carried, not yet filed for the newest quarter
3.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	336,487	2.38%	+32,267	Jun 30, 2026	iShares Trust, not summed
3.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	136,460	0.97%	+32,203	Jun 30, 2026	iShares Trust, not summed
3.3	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	43,591	0.31%	+11,544	Jun 30, 2026	iShares Trust, not summed
3.4	iShares Core S&P Total U.S. Stock Market ETF Fund S000004317 · Registered fund · Jun 30, 2026 iShares Trust, not summed	31,901	0.23%	+816	Jun 30, 2026	iShares Trust, not summed
3.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	21,945	0.16%	0	Jun 30, 2026	Quantitative Master Series LLC, not summed
4	Kinney Jonathan Craig Insider CIK 1318894 · Aug 26, 2026 Director, issuer-wide, not summed	615,551	4.36%	+2,357	Aug 26, 2026	Director, issuer-wide, not summed
5	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	534,570	3.79%	-2,806	Jun 30, 2026	carried, not yet filed for the newest quarter
6	EVERMAY WEALTH MANAGEMENT LLC 13F CIK 1066816 · Registered investment adviser · Sep 30, 2026	405,365	2.87%	+54,216	Sep 30, 2026
7	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	379,425	2.69%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
8	TOTH FINANCIAL ADVISORY CORP 13F CIK 866780 · Registered investment adviser · Sep 30, 2026	360,042	2.55%	+23,789	Sep 30, 2026
9	Foster Michael T Insider CIK 1903972 · Dec 16, 2025 Director, issuer-wide, not summed	337,573	2.39%	+1,901	Dec 16, 2025	Director, issuer-wide, not summed
10	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Sep 30, 2026	299,601	2.12%	-16,583	Sep 30, 2026
11	Garg Subhash Insider CIK 1898818 · Dec 16, 2025 Director, issuer-wide, not summed	249,638	1.77%	—	Dec 16, 2025	Director, issuer-wide, not summed
12	STATE STREET CORP 13F CIK 93751 · Bank · Sep 30, 2026	214,720	1.52%	-3,802	Sep 30, 2026
12.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	4,700	0.03%	+700	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
12.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	300	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
12.3	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	127	0.00%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
13	Allin Philip W Insider CIK 1906340 · Dec 16, 2025 Director, issuer-wide, not summed	187,213	1.33%	+1,901	Dec 16, 2025	Director, issuer-wide, not summed
14	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	178,112	1.26%	-28,599	Jun 30, 2026	carried, not yet filed for the newest quarter
15	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	143,868	1.02%	-503	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
16	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Sep 30, 2026	121,800	0.86%	+18,100	Sep 30, 2026
17	BROWN ADVISORY INC 13F CIK 1345929 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	108,342	0.77%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
18	Chase Philip Insider CIK 1898808 · Aug 26, 2026 Director, issuer-wide, not summed	107,328	0.76%	+133	Aug 26, 2026	Director, issuer-wide, not summed
19	Elizabeth Park Capital Advisors, Ltd. 13F CIK 1600583 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	105,339	0.75%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
20	Cresset Asset Management, LLC 13F CIK 1761013 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	104,494	0.74%	-1	Jun 30, 2026	carried, not yet filed for the newest quarter
21	MAI Capital Management 13F CIK 1040197 · Registered investment adviser · Sep 30, 2026	103,144	0.73%	-30,048	Sep 30, 2026
22	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Sep 30, 2026	102,784	0.73%	+10,878	Sep 30, 2026
23	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	99,995	0.71%	+473	Jun 30, 2026	carried, not yet filed for the newest quarter
23.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	6,689	0.05%	+1,465	Jun 30, 2026	Northern Funds, not summed
24	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	98,090	0.70%	+66,618	Jun 30, 2026	carried, not yet filed for the newest quarter
25	MACKENZIE FINANCIAL CORP 13F CIK 919859 · Registered investment adviser · Sep 30, 2026	95,840	0.68%	+7,637	Sep 30, 2026
26	Mahan Oscar Leland Insider CIK 1898828 · Jun 3, 2026 Director, issuer-wide, not summed	94,981	0.67%	+179	Jun 3, 2026	Director, issuer-wide, not summed
27	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	84,517	0.60%	+11,632	Jun 30, 2026	carried, not yet filed for the newest quarter
28	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	82,862	0.59%	+3,354	Jun 30, 2026	carried, not yet filed for the newest quarter
29	BERGSTROM CHRISTOPHER W Insider CIK 1277589 · Jun 17, 2026 Director, CHIEF EXECUTIVE OFFICER, issuer-wide, not summed	74,867	0.53%	0	Jun 17, 2026	Director, CHIEF EXECUTIVE OFFICER, issuer-wide, not summed
30	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · Aug 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	71,928	0.51%	+6,895	Aug 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
31	Nguonly Lim Insider CIK 1898790 · Dec 17, 2024 Director, issuer-wide, not summed	65,137	0.46%	+1,610	Dec 17, 2024	Director, issuer-wide, not summed
32	Wealthspire Advisors, LLC 13F CIK 1646247 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	64,333	0.46%	+192	Jun 30, 2026	carried, not yet filed for the newest quarter
33	Meridian Financial Partners LLC 13F CIK 1763722 · Unknown · Sep 30, 2026	57,619	0.41%	0	Sep 30, 2026
34	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Sep 30, 2026	56,295	0.40%	+32,074	Sep 30, 2026
34.1	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	4,988	0.04%	+3,563	Jul 31, 2026	Dimensional ETF Trust, not summed
34.2	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	3,232	0.02%	—	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
34.3	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	3,159	0.02%	—	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
34.4	U.S. VECTOR EQUITY PORTFOLIO Fund S000000982 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	1,801	0.01%	—	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
34.5	Dimensional U.S. Targeted Value ETF Fund S000070901 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	1,184	0.01%	+1,038	Jul 31, 2026	Dimensional ETF Trust, not summed
35	Carstater Kent Insider CIK 1897278 · Dec 16, 2025 CHIEF FINANCIAL OFFICER, issuer-wide, not summed	56,219	0.40%	+3,088	Dec 16, 2025	CHIEF FINANCIAL OFFICER, issuer-wide, not summed
36	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	55,470	0.39%	+24,068	Jun 30, 2026	carried, not yet filed for the newest quarter
36.1	Goldman Sachs Small Cap Value Insights Fund Fund S000014929 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	14,768	0.10%	—	Jul 31, 2026	Goldman Sachs Trust, not summed
36.2	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Aug 31, 2026 GOLDMAN SACHS TRUST, not summed	13,912	0.10%	+2,816	Aug 31, 2026	GOLDMAN SACHS TRUST, not summed
37	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	46,416	0.33%	+26,031	Jun 30, 2026	carried, not yet filed for the newest quarter
38	Quantinno Capital Management LP 13F CIK 1759654 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	45,500	0.32%	+20,255	Jun 30, 2026	carried, not yet filed for the newest quarter
39	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	42,222	0.30%	+20,462	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Selective Wealth Management, Inc. 13F CIK 1755670 · Registered investment adviser · Sep 30, 2026	41,103	0.29%	0	Sep 30, 2026
41	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	38,463	0.27%	+1,866	Jun 30, 2026	carried, not yet filed for the newest quarter
41.1	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	29,993	0.21%	+1,840	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
41.2	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	8,443	0.06%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
42	GARCIA MICHAEL A Insider CIK 1253663 · Dec 16, 2025 Director, issuer-wide, not summed	36,273	0.26%	+1,901	Dec 16, 2025	Director, issuer-wide, not summed
43	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	36,244	0.26%	+14,945	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Sep 30, 2026	32,365	0.23%	-1,589	Sep 30, 2026
45	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 13F CIK 1164508 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	30,689	0.22%	+30,689	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Nuveen, LLC 13F CIK 1871926 · Unknown · Sep 30, 2026	29,491	0.21%	+583	Sep 30, 2026
46.1	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	17,472	0.12%	+1,599	Jul 31, 2026	TIAA-CREF Funds, not summed
46.2	Nuveen Equity Index Fund Fund S000005360 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	10,900	0.08%	0	Jul 31, 2026	TIAA-CREF Funds, not summed
46.3	Nuveen Life Stock Index Fund Fund S000005094 · Registered fund · Jun 30, 2026 TIAA-CREF Life Funds, not summed	164	0.00%	0	Jun 30, 2026	TIAA-CREF Life Funds, not summed
46.4	TIAA Separate Account VA-1 - Stock Index Account Fund S000005098 · Registered fund · Jun 30, 2026 TIAA Separate Account VA-1, not summed	9	0.00%	-1,179	Jun 30, 2026	TIAA Separate Account VA-1, not summed
47	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	27,586	0.20%	+27,586	Jun 30, 2026	carried, not yet filed for the newest quarter
48	Peden Andrew Insider CIK 1897287 · Dec 17, 2025 CHIEF BANKING OFFICER, issuer-wide, not summed	26,560	0.19%	+2,182	Dec 17, 2025	CHIEF BANKING OFFICER, issuer-wide, not summed
49	Trexquant Investment LP 13F CIK 1633445 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	24,310	0.17%	+24,310	Jun 30, 2026	carried, not yet filed for the newest quarter
50	ROYAL BANK OF CANADA 13F CIK 1000275 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	22,461	0.16%	+1,618	Jun 30, 2026	carried, not yet filed for the newest quarter

9 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 179 holders

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Key facts CIK 1710482 CUSIP 47805L101 13F (30d) 65 filings 53 filers Visit website Investor relations