Castellum, Inc.'s Subsidiary Specialty Systems, Inc. Adds IT Services for GSA MAS Contract

VIENNA, Va., Oct. 14, 2025 (GLOBE NEWSWIRE) -- Castellum, Inc. (NYSE-American: CTM) (“Castellum” or “CTM”), a cybersecurity, electronic warfare, and software engineering services company focused on the federal government, announces that its subsidiary Specialty Systems, Inc. (“SSI”) has added Special Item Number (“SIN”) 54151S to a new General Services Administration (“GSA”) Multiple Award Schedule (“MAS”) contract. SIN 54151S now allows SSI to bid on competitive contracts related to information technology ...