CTM · Castellum, Inc. · Shareholders & Ownership

$0.37 -0.01 (-1.58%) Play latest call Q3 2026 earnings call transcript

Market Cap

$36.04M

95.02M

Volume · Nov 9 103.93K Avg daily vol (3M) 651.23K

Every disclosed holder of CTM 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 CTM

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)	35	7,896,421	8.31%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	87,127,380	91.69%	Rest
Registered funds (N-PORT, not summed)	8	3,893,522	4.10%	No

Shares outstanding: 95,023,801, 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 CTM

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	WRIGHT JAY O Insider CIK 1310272 · Dec 19, 2025 Director, General Counsel, Secretary, issuer-wide, not summed	7,134,973	7.51%	-30,000	Dec 19, 2025	Director, General Counsel, Secretary, issuer-wide, not summed
2	Fuller Mark C Insider CIK 1944544 · Sep 3, 2025 Insider, issuer-wide, not summed	6,113,659	6.43%	-500,000	Sep 3, 2025	Insider, issuer-wide, not summed
3	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,093,768	3.26%	+12,511	Jun 30, 2026	carried, not yet filed for the newest quarter
4	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	2,189,871	2.30%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
5	Meridian Wealth Management, LLC 13F CIK 1697300 · Registered investment adviser · Sep 30, 2026	907,100	0.95%	+43,900	Sep 30, 2026
6	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	818,269	0.86%	+48,154	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
7	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Sep 30, 2026	804,499	0.85%	-11,538	Sep 30, 2026
8	CAPTRUST FINANCIAL ADVISORS 13F CIK 1512024 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	626,100	0.66%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
9	Merriman Andrew Insider CIK 2036177 · Oct 1, 2026 Chief Operating Officer, issuer-wide, not summed	589,927	0.62%	+1,396	Oct 1, 2026	Chief Operating Officer, issuer-wide, not summed
10	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	492,717	0.52%	+74,393	Jun 30, 2026	carried, not yet filed for the newest quarter
11	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	456,607	0.48%	+9,828	Aug 31, 2026	Fidelity Concord Street Trust, not summed
12	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	303,900	0.32%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
13	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	265,486	0.28%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
14	McMillen Charles Thomas Insider CIK 1332108 · Mar 25, 2026 Director, issuer-wide, not summed	231,015	0.24%	-30,000	Mar 25, 2026	Director, issuer-wide, not summed
15	Savvy Advisors, Inc. 13F CIK 2003633 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	220,300	0.23%	-1,500	Jun 30, 2026	carried, not yet filed for the newest quarter
16	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	208,958	0.22%	+55,429	Jun 30, 2026	carried, not yet filed for the newest quarter
17	Ives Glen R Insider CIK 1947023 · Oct 1, 2026 President, issuer-wide, not summed	202,578	0.21%	+1,700	Oct 1, 2026	President, issuer-wide, not summed
18	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	171,420	0.18%	-10,482	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Virtu Financial LLC 13F CIK 1533964 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	168,401	0.18%	+168,401	Jun 30, 2026	carried, not yet filed for the newest quarter
20	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	132,463	0.14%	0	Aug 31, 2026	Fidelity Concord Street Trust, not summed
21	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	129,071	0.14%	-107,703	Jun 30, 2026	carried, not yet filed for the newest quarter
22	Fidelity Series Total Market Index Fund Fund S000065248 · Registered fund · Aug 31, 2026 Fidelity Concord Street Trust, not summed	115,890	0.12%	0	Aug 31, 2026	Fidelity Concord Street Trust, not summed
23	BRIDGEWAY CAPITAL MANAGEMENT, LLC 13F CIK 1107261 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	94,794	0.10%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
23.1	Ultra-Small Company Market Fund Fund S000004424 · Registered fund · Jun 30, 2026 Bridgeway Funds, Inc., not summed	94,794	0.10%	0	Jun 30, 2026	Bridgeway Funds, Inc., not summed
24	HUB Investment Partners, LLC 13F CIK 1841815 · Unknown · Sep 30, 2026	57,414	0.06%	0	Sep 30, 2026
25	Almanack Investment Partners, LLC. 13F CIK 1680613 · Registered investment adviser · Sep 30, 2026	50,000	0.05%	0	Sep 30, 2026
26	Creative Planning 13F CIK 1540235 · Registered investment adviser · Sep 30, 2026	50,000	0.05%	0	Sep 30, 2026
27	VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND Fund S000002855 · Registered fund · Jun 30, 2026 VANGUARD INSTITUTIONAL INDEX FUNDS, not summed	48,544	0.05%	0	Jun 30, 2026	VANGUARD INSTITUTIONAL INDEX FUNDS, not summed
28	TWO SIGMA SECURITIES, LLC 13F CIK 1450144 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	40,530	0.04%	+25,308	Jun 30, 2026	carried, not yet filed for the newest quarter
29	VANGUARD BALANCED INDEX FUND Fund S000002560 · Registered fund · Jun 30, 2026 VANGUARD VALLEY FORGE FUNDS, not summed	37,084	0.04%	-35,643	Jun 30, 2026	VANGUARD VALLEY FORGE FUNDS, not summed
30	ARQ WEALTH ADVISORS, LLC 13F CIK 1811827 · Registered investment adviser · Sep 30, 2026	35,000	0.04%	0	Sep 30, 2026
31	Pathstone Holdings, LLC 13F CIK 2011612 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	31,179	0.03%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
32	Vanguard Global Advisers, LLC 13F CIK 1811242 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	27,344	0.03%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
33	CAPITAL ADVISORS INC/OK 13F CIK 860828 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	22,000	0.02%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
34	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	21,910	0.02%	+21,910	Jun 30, 2026	carried, not yet filed for the newest quarter
35	PKS Advisory Services, LLC 13F CIK 1605401 · Registered investment adviser · Sep 30, 2026	18,931	0.02%	0	Sep 30, 2026
36	Bell David T Insider CIK 1944338 · Oct 1, 2026 Chief Financial Officer, issuer-wide, not summed	18,651	0.02%	+1,396	Oct 1, 2026	Chief Financial Officer, issuer-wide, not summed
37	MARTIN TAMMY L Insider CIK 1329293 · Oct 1, 2026 General Counsel and Secretary, issuer-wide, not summed	16,427	0.02%	+1,396	Oct 1, 2026	General Counsel and Secretary, issuer-wide, not summed
38	Blue Trust, Inc. 13F CIK 1856022 · Unknown · Sep 30, 2026	14,724	0.02%	0	Sep 30, 2026
39	KESTRA PRIVATE WEALTH SERVICES, LLC 13F CIK 1649451 · Registered investment adviser · Sep 30, 2026	13,250	0.01%	-14,000	Sep 30, 2026
40	Inscription Capital, LLC 13F CIK 1767868 · Registered investment adviser · Sep 30, 2026	12,500	0.01%	0	Sep 30, 2026
41	JONES FINANCIAL COMPANIES LLLP 13F CIK 815917 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	6,366	0.01%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Tower Research Capital LLC (TRC) 13F CIK 1533421 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	5,872	0.01%	+5,872	Jun 30, 2026	carried, not yet filed for the newest quarter
43	Cape Investment Advisory, Inc. 13F CIK 1944437 · Registered investment adviser · Sep 30, 2026	2,000	0.00%	0	Sep 30, 2026
44	TD Waterhouse Canada Inc. 13F CIK 1999606 · Unknown · Sep 30, 2026	500	0.00%	0	Sep 30, 2026
45	OSAIC HOLDINGS, INC. 13F CIK 1677044 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	215	0.00%	+215	Jun 30, 2026	carried, not yet filed for the newest quarter
46	HARBOUR INVESTMENTS, INC. 13F CIK 810121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	150	0.00%	+150	Jun 30, 2026	carried, not yet filed for the newest quarter
47	CITIGROUP INC 13F CIK 831001 · Bank · Sep 30, 2026	17	0.00%	+17	Sep 30, 2026
48	Friedenthal Financial 13F CIK 1598611 · Unknown · Sep 30, 2026	5	0.00%	+5	Sep 30, 2026

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.

Key facts CIK 1877939 CUSIP 14838T204 13F (30d) 15 filings 15 filers Visit website Investor relations