Castellum, Inc. (CTM)
SEC filings, insider trading & institutional ownership from EDGAR.
Institutions
14
$4.22B held
Latest filings
10-K, 10-Q, 8-K, Form 4 & 13D/G. Sourced directly from SEC EDGAR
No filings are available yet.
Top holders
13F & 13D/G · latest quarter
| Holder | Filed | Value |
|---|---|---|
| Vanguard Capital Management | Aug 13, 2026 | $2.23B |
| GEODE CAPITAL MANAGEMENT, LLC | Aug 12, 2026 | $587.64M |
| GOLDMAN SACHS GROUP INC | Mar 25, 2026 | $319.31M |
| STATE STREET CORPORATION | Aug 7, 2026 | $218.78M |
| BlackRock, Inc.ACTIVIST | Aug 7, 2026 | $191.12M |
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Data as of Aug 31, 2026Source: SEC EDGAR.