{"schema_version":"secwatch.filing_event.v1","accession":"0001877939-25-000042","form_type":"8-K","ticker":"CTM","cik":"0001877939","company_name":"Castellum, Inc.","filed_at":"2025-04-15T23:59:59+00:00","discovered_at":"2026-05-14T18:02:50.338384+00:00","generated_at":"2026-05-23T14:59:11.133302+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Castellum subsidiary GTMR adds Professional Services SIN 541611 to GSA MAS contract","bullets":["GTMR added SIN 541611 (management/financial consulting, acquisition support, program management) to its GSA MAS contract.","Previously held SINs for engineering, testing, system design, and R&D services.","New SIN allows GTMR to bid on competitive RFQs/RFPs in professional services.","COO Drew Merriman highlights organic growth and ability to leverage joint ventures with this expansion."],"urls":{"canonical":"https://secwatch.observer/filing/0001877939-25-000042","json":"https://secwatch.observer/filing/0001877939-25-000042.json","markdown":"https://secwatch.observer/filing/0001877939-25-000042.md","text":"https://secwatch.observer/filing/0001877939-25-000042.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1877939/000187793925000042/0001877939-25-000042-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1877939/000187793925000042/ctm-20250415.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T14:59:11.133302+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}