Castellum, Inc.
CTM- Exchange
- NYSE
- Industry
- Services-Management Consulting Services
- SEC CIK
- 0001877939
In the last 90 days, Castellum, Inc. insiders filed 5 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.
Holders of 5% or more of CTM
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Castellum, Inc., largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Castellum, Inc. on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
Schedule 13D and 13G filings on Castellum, Inc., newest first.
No Schedule 13D or 13G filings on Castellum, Inc. are on file.
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Castellum, Inc. shares.
No Form 144 notices for Castellum, Inc. are on file.