Castellum, Inc. SEC filings CTM
Castellum, Inc. has 312 filings in SEC EDGAR's recent list, going back to Oct 19, 2021. Its latest annual report, Form 10-K, was filed on Mar 9, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 6, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Nov 6, 2026 | Nov 5, 2026 |
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Other events
|
Oct 29, 2026 | Oct 28, 2026 |
| 8-K |
Current report
Other events
|
Oct 13, 2026 | Oct 12, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 9, 2026 |
| 8-K |
Current report
Other events
|
Sep 9, 2026 | Sep 9, 2026 |
| 8-K |
Current report
Other events
|
Aug 31, 2026 | Aug 31, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2026 | Aug 6, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Other events
|
Jul 31, 2026 | Jul 31, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jul 2, 2026 | Jul 1, 2026 |
| 8-K |
Current report
Other events
|
Jun 24, 2026 | Jun 23, 2026 |
| 8-K |
Current report
Other events
|
Jun 15, 2026 | Jun 15, 2026 |
| S-8 | Employee stock plan registration | Jun 1, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
May 20, 2026 | May 19, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
May 18, 2026 | May 18, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 13, 2026 | May 8, 2026 |
| 10-Q | Quarterly report | May 8, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Other events
|
Apr 23, 2026 | Apr 23, 2026 |
| DEFA14A | Additional proxy material | Apr 7, 2026 | — |
| DEF 14A | Proxy statement | Apr 7, 2026 | Apr 7, 2026 |
| 4 | Insider transaction | Mar 31, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Mar 31, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Mar 31, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Mar 27, 2026 | Mar 25, 2026 |
| 4 | Insider transaction | Mar 27, 2026 | Mar 27, 2026 |
| 4 | Insider transaction | Mar 27, 2026 | Mar 27, 2026 |
| 4 | Insider transaction | Mar 26, 2026 | Mar 26, 2026 |
| 4 | Insider transaction | Mar 20, 2026 | Mar 18, 2026 |
| 4 | Insider transaction | Mar 18, 2026 | Mar 18, 2026 |
| 144 | Notice of proposed sale | Mar 17, 2026 | — |
| 10-K | Annual report | Mar 9, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2026 | Mar 4, 2026 |
| 8-K |
Current report
Other events
|
Feb 17, 2026 | Feb 17, 2026 |
| 8-K |
Current report
Other events
|
Jan 8, 2026 | Jan 7, 2026 |
| 3 | Initial insider ownership | Jan 2, 2026 | Jan 1, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 2, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Dec 22, 2025 | Dec 19, 2025 |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 4 | Insider transaction | Dec 12, 2025 | Dec 10, 2025 |
| 8-K |
Current report
Officer or director change, Other events
|
Dec 9, 2025 | Dec 8, 2025 |
| 4 | Insider transaction | Dec 2, 2025 | Nov 28, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 14, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 8-K |
Current report
Other events
|
Nov 13, 2025 | Nov 13, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 144 | Notice of proposed sale | Nov 10, 2025 | — |
| 10-Q | Quarterly report | Nov 7, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2025 | Nov 7, 2025 |
| 8-K |
Current report
Other events
|
Oct 31, 2025 | Oct 31, 2025 |
| 8-K |
Current report
Other events
|
Oct 21, 2025 | Oct 20, 2025 |
| 8-K |
Current report
Other events
|
Oct 14, 2025 | Oct 14, 2025 |
| S-8 | Employee stock plan registration | Sep 17, 2025 | — |
| S-8 | Employee stock plan registration | Sep 17, 2025 | — |
| 4 | Insider transaction | Sep 17, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Sep 12, 2025 | Sep 10, 2025 |
| 4 | Insider transaction | Sep 9, 2025 | Sep 5, 2025 |
| 4 | Insider transaction | Sep 3, 2025 | Sep 3, 2025 |
| 4 | Insider transaction | Aug 28, 2025 | Aug 27, 2025 |
| 4 | Insider transaction | Aug 26, 2025 | Aug 22, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 20, 2025 |
| 4 | Insider transaction | Aug 20, 2025 | Aug 18, 2025 |
| 8-K |
Current report
Other events
|
Aug 19, 2025 | Aug 19, 2025 |
| 144 | Notice of proposed sale | Aug 18, 2025 | — |
| 144 | Notice of proposed sale | Aug 18, 2025 | — |
| 8-K |
Current report
Other events
|
Aug 15, 2025 | Aug 14, 2025 |
| 8-K |
Current report
Other events
|
Aug 12, 2025 | Aug 12, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2025 | Aug 8, 2025 |
| 10-Q | Quarterly report | Aug 8, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Aug 5, 2025 | Aug 4, 2025 |
| 8-K |
Current report
Other events
|
Jul 14, 2025 | Jul 14, 2025 |
| 8-K |
Current report
Other events
|
Jul 8, 2025 | Jul 8, 2025 |
| 8-K |
Current report
Other events
|
Jun 24, 2025 | Jun 24, 2025 |
| 8-K |
Current report
Other events
|
Jun 17, 2025 | Jun 16, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Jun 13, 2025 | Jun 12, 2025 |
| 424B5 | Prospectus supplement | Jun 12, 2025 | — |
| 424B5 | Prospectus supplement | Jun 11, 2025 | — |
| 8-K |
Current report
Other events
|
Jun 6, 2025 | Jun 5, 2025 |
| 8-K |
Current report
Other events
|
Jun 2, 2025 | Jun 2, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 28, 2025 | May 28, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
May 27, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 20, 2025 | May 19, 2025 |
| 144 | Notice of proposed sale | May 19, 2025 | — |
| 8-K |
Current report
Results of operations
|
May 9, 2025 | May 9, 2025 |
| 10-Q | Quarterly report | May 9, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Apr 21, 2025 | Apr 17, 2025 |
| 8-K |
Current report
Other events
|
Apr 15, 2025 | Apr 15, 2025 |
| DEFA14A | Additional proxy material | Apr 11, 2025 | — |
| DEF 14A | Proxy statement | Apr 11, 2025 | May 28, 2025 |
| 8-K |
Current report
Other events
|
Apr 10, 2025 | Apr 10, 2025 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Apr 4, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Other events
|
Mar 19, 2025 | Mar 19, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Mar 18, 2025 | Mar 14, 2025 |
| 424B5 | Prospectus supplement | Mar 17, 2025 | — |
| 424B5 | Prospectus supplement | Mar 14, 2025 | — |
| 8-K |
Current report
Other events
|
Mar 12, 2025 | Mar 12, 2025 |
| 10-K | Annual report | Mar 11, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Mar 7, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 5, 2025 |
| 144 | Notice of proposed sale | Mar 4, 2025 | — |
| 144 | Notice of proposed sale | Mar 4, 2025 | — |
| 8-K |
Current report
Results of operations, Other events
|
Feb 28, 2025 | Feb 27, 2025 |
| 8-K |
Current report
Other events
|
Feb 25, 2025 | Feb 25, 2025 |
| 5 | Annual insider ownership | Feb 14, 2025 | Dec 31, 2024 |
| EFFECT | Filing | Jan 24, 2025 | — |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| CORRESP | Letter to the SEC | Jan 23, 2025 | — |
| S-3/A | Filing | Jan 22, 2025 | — |
| UPLOAD | Letter from the SEC | Jan 21, 2025 | — |
| 8-K |
Current report
Other events
|
Jan 14, 2025 | Jan 14, 2025 |
| S-3 | Shelf registration | Jan 10, 2025 | — |
| 8-K |
Current report
Other events
|
Jan 8, 2025 | Jan 8, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| 424B5 | Prospectus supplement | Dec 30, 2024 | — |
| 8-K |
Current report
Material agreement, Other events
|
Dec 30, 2024 | Dec 26, 2024 |
| 424B5 | Prospectus supplement | Dec 27, 2024 | — |
| 8-K |
Current report
Material agreement, Other events
|
Dec 26, 2024 | Dec 22, 2024 |
| 424B5 | Prospectus supplement | Dec 23, 2024 | — |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2024 | Nov 4, 2024 |
| 8-K |
Current report
Other events
|
Sep 24, 2024 | Sep 24, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 4, 2024 |
| 3 | Initial insider ownership | Sep 4, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Sep 4, 2024 | Sep 3, 2024 |
| 8-K |
Current report
Material agreement
|
Sep 4, 2024 | Sep 2, 2024 |
| 8-K |
Current report
Officer or director change
|
Sep 3, 2024 | Sep 1, 2024 |
| 4 | Insider transaction | Aug 30, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Aug 29, 2024 | Aug 28, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 14, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2024 | Aug 9, 2024 |
| 10-Q | Quarterly report | Aug 9, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Other events
|
Jul 22, 2024 | Jul 22, 2024 |
| 8-K |
Current report
Other events
|
Jul 17, 2024 | Jul 17, 2024 |
| 8-K |
Current report
Other events
|
Jul 10, 2024 | Jul 10, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 7, 2024 | Jun 7, 2024 |
| 8-K |
Current report
Other events
|
Jun 6, 2024 | Jun 6, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
May 29, 2024 | May 29, 2024 |
| 8-K |
Current report
Results of operations
|
May 15, 2024 | May 15, 2024 |
| 10-Q | Quarterly report | May 15, 2024 | Mar 31, 2024 |
| EFFECT | Filing | Apr 18, 2024 | — |
| 424B2 | Prospectus | Apr 18, 2024 | — |
| 8-K |
Current report
Other events
|
Apr 18, 2024 | Apr 18, 2024 |
| DEFA14A | Additional proxy material | Apr 16, 2024 | — |
| DEF 14A | Proxy statement | Apr 16, 2024 | May 29, 2024 |
| UPLOAD | Letter from the SEC | Apr 16, 2024 | — |
| CORRESP | Letter to the SEC | Apr 16, 2024 | — |
| S-3 | Shelf registration | Apr 8, 2024 | — |
| 8-K |
Current report
Other events
|
Mar 21, 2024 | Mar 21, 2024 |
| 10-K | Annual report | Mar 21, 2024 | Dec 31, 2023 |
| DEF 14C | Information statement | Feb 27, 2024 | Feb 27, 2024 |
| 4 | Insider transaction | Feb 23, 2024 | Feb 23, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Feb 23, 2024 | Feb 22, 2024 |
| PRE 14C | Filing | Feb 16, 2024 | Feb 16, 2024 |
| 8-K |
Current report
Other events
|
Jan 30, 2024 | Jan 29, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Jan 29, 2024 | Jan 25, 2024 |
| 424B5 | Prospectus supplement | Jan 29, 2024 | — |
| EFFECT | Filing | Dec 12, 2023 | — |
| CORRESP | Letter to the SEC | Dec 8, 2023 | — |
| UPLOAD | Letter from the SEC | Dec 8, 2023 | — |
| S-3 | Shelf registration | Dec 1, 2023 | — |
| 8-K |
Current report
Other events
|
Nov 27, 2023 | Nov 27, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 14, 2023 | Nov 14, 2023 |
| 10-Q | Quarterly report | Nov 14, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Other events
|
Oct 31, 2023 | Oct 31, 2023 |
| 8-K |
Current report
Other events
|
Oct 20, 2023 | Oct 20, 2023 |
| 8-K |
Current report
Other events
|
Aug 29, 2023 | Aug 29, 2023 |
| 3/A | Filing | Aug 24, 2023 | Oct 12, 2022 |
| 10-Q | Quarterly report | Aug 14, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2023 | Aug 14, 2023 |
| 8-K |
Current report
Other events
|
Jul 31, 2023 | Jul 31, 2023 |
| 8-K |
Current report
Other events
|
Jun 30, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Other events
|
Jun 27, 2023 | Jun 26, 2023 |
| 8-K |
Current report
Other events
|
Jun 14, 2023 | Jun 14, 2023 |
| 4 | Insider transaction | Jun 14, 2023 | Jun 13, 2023 |
| 8-K/A | Amended current report | Jun 5, 2023 | Mar 22, 2023 |
| 8-K |
Current report
Other events
|
May 30, 2023 | May 30, 2023 |
| 8-K |
Current report
Other events
|
May 26, 2023 | May 26, 2023 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Services-Management Consulting Services (SIC 8742)
- Listed as
- CTM (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- NV
- Headquarters
- Vienna, VA
- SEC filer status
- Non-accelerated filer, Smaller reporting company, Emerging growth company
- SEC CIK
- 1877939
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.