# Castellum, Inc.: filings

CTM · NYSE · CIK 1877939 · [Industrials](/sectors/industrials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/ctm.md) · [Financials](/companies/ctm/financials.md) · [Filings](/companies/ctm/filings.md) · [Insiders](/companies/ctm/insiders.md)

## Reports and events: 126 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 100, 8-K 98, 3 13, 10-Q 12, 4/A 10, CORRESP 10, 424B5 8, 144 7, UPLOAD 6, 10-K 4, DEF 14A 4, DEFA14A 4, EFFECT 4, S-1/A 4, S-3 3, S-8 3, 424B4 2, SC 13D 2, 3/A 1, 424B2 1, 5 1, 8-A12B 1, 8-K/A 1, CERT 1, D 1, DEF 14C 1, DRS 1, DRS/A 1, DRSLTR 1, PRE 14C 1, S-1 1, S-3/A 1, SC 13G 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-13 | 16:14 ET | [8-K](/filings/0001877939-26-000089.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000089 |
| 2026-09-09 | 16:02 ET | [8-K](/filings/0001877939-26-000078.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000078 |
| 2026-08-31 | 16:03 ET | [8-K](/filings/0001877939-26-000075.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000075 |
| 2026-08-07 | 16:05 ET | [8-K](/filings/0001877939-26-000073.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001877939-26-000073 |
| 2026-08-06 | 16:09 ET | [10-Q](/filings/0001877939-26-000070.md) | Quarterly report, period 2026-06-30 | 0001877939-26-000070 |
| 2026-07-31 | 16:01 ET | [8-K](/filings/0001877939-26-000065.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000065 |
| 2026-07-02 | 16:02 ET | [8-K](/filings/0001877939-26-000057.md) | 1.01 Entry into a material agreement; 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001877939-26-000057 |
| 2026-06-24 | 16:02 ET | [8-K](/filings/0001877939-26-000052.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000052 |
| 2026-06-15 | 16:15 ET | [8-K](/filings/0001877939-26-000050.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000050 |
| 2026-05-20 | 16:01 ET | [8-K](/filings/0001877939-26-000044.md) | 5.07 Shareholder vote results | 0001877939-26-000044 |
| 2026-05-18 | 06:55 ET | [8-K](/filings/0001877939-26-000040.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001877939-26-000040 |
| 2026-05-13 | 06:31 ET | [8-K](/filings/0001877939-26-000036.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001877939-26-000036 |
| 2026-05-08 | 16:05 ET | [10-Q](/filings/0001877939-26-000033.md) | Quarterly report, period 2026-03-31 | 0001877939-26-000033 |
| 2026-04-23 | 16:05 ET | [8-K](/filings/0001877939-26-000028.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000028 |
| 2026-04-07 | 16:01 ET | [DEF 14A](/filings/0001877939-26-000025.md) | Proxy statement, period 2026-04-07 | 0001877939-26-000025 |
| 2026-03-09 | 16:04 ET | [10-K](/filings/0001877939-26-000016.md) | Annual report, period 2025-12-31 | 0001877939-26-000016 |
| 2026-03-05 | 16:02 ET | [8-K](/filings/0001877939-26-000012.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001877939-26-000012 |
| 2026-02-17 | 16:01 ET | [8-K](/filings/0001877939-26-000009.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000009 |
| 2026-01-08 | 16:01 ET | [8-K](/filings/0001877939-26-000007.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-26-000007 |
| 2026-01-02 | 16:01 ET | [8-K](/filings/0001877939-26-000004.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001877939-26-000004 |
| 2025-12-09 | 16:01 ET | [8-K](/filings/0001877939-25-000126.md) | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000126 |
| 2025-11-13 | 16:01 ET | [8-K](/filings/0001877939-25-000124.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000124 |
| 2025-11-07 | 16:05 ET | [10-Q](/filings/0001877939-25-000115.md) | Quarterly report, period 2025-09-30 | 0001877939-25-000115 |
| 2025-11-07 | 16:01 ET | [8-K](/filings/0001877939-25-000114.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001877939-25-000114 |
| 2025-10-31 | 16:01 ET | [8-K](/filings/0001877939-25-000110.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000110 |
| 2025-10-21 | 16:01 ET | [8-K](/filings/0001877939-25-000108.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000108 |
| 2025-10-14 | 16:03 ET | [8-K](/filings/0001877939-25-000106.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000106 |
| 2025-08-19 | 16:00 ET | [8-K](/filings/0001877939-25-000089.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000089 |
| 2025-08-15 | 06:33 ET | [8-K](/filings/0001877939-25-000087.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000087 |
| 2025-08-12 | 16:00 ET | [8-K](/filings/0001877939-25-000085.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000085 |
| 2025-08-08 | 16:18 ET | [8-K](/filings/0001877939-25-000083.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001877939-25-000083 |
| 2025-08-08 | 16:06 ET | [10-Q](/filings/0001877939-25-000082.md) | Quarterly report, period 2025-06-30 | 0001877939-25-000082 |
| 2025-08-05 | 16:01 ET | [8-K](/filings/0001877939-25-000077.md) | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000077 |
| 2025-07-14 | 16:00 ET | [8-K](/filings/0001877939-25-000075.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000075 |
| 2025-07-08 | 16:00 ET | [8-K](/filings/0001877939-25-000072.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000072 |
| 2025-06-24 | 16:11 ET | [8-K](/filings/0001877939-25-000070.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000070 |
| 2025-06-17 | 06:31 ET | [8-K](/filings/0001877939-25-000068.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000068 |
| 2025-06-13 | 16:01 ET | [8-K](/filings/0001877939-25-000062.md) | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000062 |
| 2025-06-06 | 06:46 ET | [8-K](/filings/0001877939-25-000060.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000060 |
| 2025-06-02 | 16:03 ET | [8-K](/filings/0001877939-25-000058.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000058 |
| 2025-05-28 | 16:01 ET | [8-K](/filings/0001877939-25-000056.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001877939-25-000056 |
| 2025-05-27 | 16:07 ET | [8-K](/filings/0001877939-25-000054.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001877939-25-000054 |
| 2025-05-09 | 16:08 ET | [8-K](/filings/0001877939-25-000051.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001877939-25-000051 |
| 2025-05-09 | 16:05 ET | [10-Q](/filings/0001877939-25-000050.md) | Quarterly report, period 2025-03-31 | 0001877939-25-000050 |
| 2025-04-21 | 16:02 ET | [8-K](/filings/0001877939-25-000044.md) | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000044 |
| 2025-04-15 | 16:07 ET | [8-K](/filings/0001877939-25-000042.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000042 |
| 2025-04-11 | 16:04 ET | [DEF 14A](/filings/0001877939-25-000037.md) | Proxy statement, period 2025-05-28 | 0001877939-25-000037 |
| 2025-04-10 | 16:02 ET | [8-K](/filings/0001877939-25-000034.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000034 |
| 2025-04-04 | 16:05 ET | [8-K](/filings/0001877939-25-000030.md) | 1.01 Entry into a material agreement; 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001877939-25-000030 |
| 2025-03-19 | 16:01 ET | [8-K](/filings/0001877939-25-000025.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001877939-25-000025 |

Page 1 of 3. [Older](/companies/ctm/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 29, 2026, 06:56 ET. No prices; not investment advice.