Castellum, Inc.

CTM·AMEX·$0.81Share Price as of 11/2·$77MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/06/26 10-QQ1 ended 03/31/2605/08/26 10-KFY 202503/09/26 10-QQ3 ended 09/30/2511/07/25 10-QQ2 ended 06/30/2508/08/25

Disclosures

8-KCurrent report10/29/26 8-KOther Events10/13/26 8-KOther Events09/09/26 8-KOther Events08/31/26 8-KResults of Operations08/07/26

Prospectuses and Registrations

S-8Registration of securities for employees06/01/26 S-8Registration of securities for employees09/17/25 S-8Registration of securities for employees09/17/25 424B5Prospectus supplement06/12/25 424B5Prospectus supplement06/11/25

Proxies

DEF 14ADefinitive proxy04/07/26 DEFA14AAdditional proxy materials04/07/26 DEF 14ADefinitive proxy04/11/25 DEFA14AAdditional proxy materials04/11/25 DEF 14ADefinitive proxy04/16/24

Ownership

Form 4Insider transaction10/01/26 Form 4Insider transaction10/01/26 Form 4Insider transaction10/01/26 Form 4Insider transaction10/01/26 Form 4Insider transaction09/09/26

Other

EFFECTRequest for effectiveness01/24/25 CORRESPCorrespondence with the SEC01/23/25 UPLOADLetter from the SEC01/21/25 EFFECTRequest for effectiveness04/18/24 CORRESPCorrespondence with the SEC04/16/24