Company filings profile · CIK 0001877939
Castellum, Inc. — SEC filings & insider activity.
Real, source-linked SEC EDGAR activity for Castellum, Inc. (CTM): 11 filings in the last 90 days vs 13 in the prior 90 (filing-velocity steady · 0.85×). Latest material 8-K events, insider Form-4 transactions, and periodic reports — monitored for change.
✔ Verified against the public SEC EDGAR filing record as of Oct 14, 2026. Source-linked, daily-refreshed.
Material 8-K events — Castellum, Inc.
8-K disclosures decoded by item code (the material events: agreements, results, control/management changes, impairments, restatements).
| Filed | Event | |
|---|---|---|
| Oct 13, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Sep 9, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Aug 31, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Aug 7, 2026 | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Jul 31, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Jul 2, 2026 | Entry into a Material Agreement; Departure/Election of Directors or Officers; Financial Statements and Exhibits | ↗ |
| Jun 24, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Jun 15, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| May 20, 2026 | Item 5.07 | ↗ |
| May 18, 2026 | Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| May 13, 2026 | Results of Operations (earnings); Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Apr 23, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Mar 5, 2026 | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Feb 17, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Jan 8, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
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Insider transactions (Form 4 / 3 / 5)
Recent filings
| Filed | Form | Detail | |
|---|---|---|---|
| Oct 13, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Oct 1, 2026 | 4 | FORM 4 | ↗ |
| Oct 1, 2026 | 4 | FORM 4 | ↗ |
| Oct 1, 2026 | 4 | FORM 4 | ↗ |
| Oct 1, 2026 | 4 | FORM 4 | ↗ |
| Sep 9, 2026 | 4 | FORM 4 | ↗ |
| Sep 9, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Aug 31, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Aug 7, 2026 | 8-K | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Aug 6, 2026 | 10-Q | 10-Q | ↗ |
| Jul 31, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Jul 2, 2026 | 4 | FORM 4 | ↗ |
| Jul 2, 2026 | 4 | FORM 4 | ↗ |
| Jul 2, 2026 | 4 | FORM 4 | ↗ |
| Jul 2, 2026 | 4 | FORM 4 | ↗ |
| Jul 2, 2026 | 8-K | Entry into a Material Agreement; Departure/Election of Directors or Officers; Financial Statements and Exhibits | ↗ |
| Jun 24, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Jun 15, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Jun 1, 2026 | S-8 | S-8 | ↗ |
| May 20, 2026 | 8-K | Item 5.07 | ↗ |
| May 18, 2026 | 8-K | Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| May 13, 2026 | 8-K | Results of Operations (earnings); Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| May 8, 2026 | 10-Q | 10-Q | ↗ |
| Apr 23, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Apr 7, 2026 | DEFA14A | DEFA14A | ↗ |
| Apr 7, 2026 | DEF 14A | DEF 14A | ↗ |
| Mar 31, 2026 | 4 | FORM 4 | ↗ |
| Mar 31, 2026 | 4 | FORM 4 | ↗ |
| Mar 31, 2026 | 4 | FORM 4 | ↗ |
| Mar 27, 2026 | 4 | FORM 4 | ↗ |
| Mar 27, 2026 | 4 | FORM 4 | ↗ |
| Mar 27, 2026 | 4 | FORM 4 | ↗ |
| Mar 26, 2026 | 4 | FORM 4 | ↗ |
| Mar 20, 2026 | 4 | FORM 4 | ↗ |
| Mar 18, 2026 | 4 | FORM 4 | ↗ |
| Mar 17, 2026 | 144 | ↗ | |
| Mar 9, 2026 | 10-K | 10-K | ↗ |
| Mar 5, 2026 | 8-K | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Feb 17, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Jan 8, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |