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Castellum, Inc.

CTM
Exchange
NYSE
Industry
Services-Management Consulting Services
SEC CIK
0001877939

In the last 90 days, Castellum, Inc. insiders filed 6 open-market purchases and 0 sales; 35 institutions reported holding it in 13F filings for Q2 2026, worth $5.69M in total; no superinvestor holds it.

SEC filings

10-K, 10-Q, 8-K, 20-F and 40-F reports Castellum, Inc. filed with the SEC, newest first.

Livermore lists each filing's form, 8-K items and dates only. To read a filing, open it on SEC.gov; an 8-K's press release or other attachments, such as exhibit 99.1 for Item 2.02, are in the filing index.

SEC filings by Castellum, Inc.
FiledForm8-K itemsPeriodDocumentFiling index
Nov 10, 20268-K8.019.01Nov 9, 2026SECIndex
Nov 6, 20268-K2.029.01Nov 5, 2026SECIndex
Nov 5, 202610-Q–Sep 30, 2026SECIndex
Oct 29, 20268-K8.019.01Oct 28, 2026SECIndex
Oct 13, 20268-K8.019.01Oct 12, 2026SECIndex
Sep 9, 20268-K8.019.01Sep 9, 2026SECIndex
Aug 31, 20268-K8.019.01Aug 31, 2026SECIndex
Aug 7, 20268-K2.029.01Aug 6, 2026SECIndex
Aug 6, 202610-Q–Jun 30, 2026SECIndex
Jul 31, 20268-K8.019.01Jul 31, 2026SECIndex
Jul 2, 20268-K1.015.029.01Jul 1, 2026SECIndex
Jun 24, 20268-K8.019.01Jun 23, 2026SECIndex
Jun 15, 20268-K8.019.01Jun 15, 2026SECIndex
May 20, 20268-K5.07May 19, 2026SECIndex
May 18, 20268-K7.019.01May 18, 2026SECIndex
May 13, 20268-K2.027.019.01May 8, 2026SECIndex
May 8, 202610-Q–Mar 31, 2026SECIndex
Apr 23, 20268-K8.019.01Apr 23, 2026SECIndex
Mar 9, 202610-K–Dec 31, 2025SECIndex
Mar 5, 20268-K2.029.01Mar 4, 2026SECIndex
Feb 17, 20268-K8.019.01Feb 17, 2026SECIndex
Jan 8, 20268-K8.019.01Jan 7, 2026SECIndex
Jan 2, 20268-K5.029.01Jan 1, 2026SECIndex
Dec 9, 20258-K5.028.019.01Dec 8, 2025SECIndex
Nov 13, 20258-K8.019.01Nov 13, 2025SECIndex
Nov 7, 202510-Q–Sep 30, 2025SECIndex
Nov 7, 20258-K2.029.01Nov 7, 2025SECIndex
Oct 31, 20258-K8.019.01Oct 31, 2025SECIndex
Oct 21, 20258-K8.019.01Oct 20, 2025SECIndex
Oct 14, 20258-K8.019.01Oct 14, 2025SECIndex
Aug 19, 20258-K8.019.01Aug 19, 2025SECIndex
Aug 15, 20258-K8.019.01Aug 14, 2025SECIndex
Aug 12, 20258-K8.019.01Aug 12, 2025SECIndex
Aug 8, 20258-K2.029.01Aug 8, 2025SECIndex
Aug 8, 202510-Q–Jun 30, 2025SECIndex
Aug 5, 20258-K1.018.019.01Aug 4, 2025SECIndex
Jul 14, 20258-K8.019.01Jul 14, 2025SECIndex
Jul 8, 20258-K8.019.01Jul 8, 2025SECIndex
Jun 24, 20258-K8.019.01Jun 24, 2025SECIndex
Jun 17, 20258-K8.019.01Jun 16, 2025SECIndex
Jun 13, 20258-K1.018.019.01Jun 12, 2025SECIndex
Jun 6, 20258-K8.019.01Jun 5, 2025SECIndex
Jun 2, 20258-K8.019.01Jun 2, 2025SECIndex
May 28, 20258-K5.079.01May 28, 2025SECIndex
May 27, 20258-K7.019.01May 27, 2025SECIndex
May 9, 20258-K2.029.01May 9, 2025SECIndex
May 9, 202510-Q–Mar 31, 2025SECIndex
Apr 21, 20258-K1.018.019.01Apr 17, 2025SECIndex
Apr 15, 20258-K8.019.01Apr 15, 2025SECIndex
Apr 10, 20258-K8.019.01Apr 10, 2025SECIndex