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Nature of Operations | 9 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Nature of Operations | Nature of Operations Castellum, Inc. (the “Company”) is focused on building a large, successful technology company in the areas of cybersecurity, information technology, electronic warfare, information warfare, and information operations with businesses in the defense, federal civilian, state and local governments, and commercial markets (the "Markets"). Services include intelligence analysis, software development, software engineering, program management, strategic and mission planning, information assurance, cybersecurity and policy support, data analytics, and model based systems engineering ("MBSE"). These services, which largely focus on securing data and establishing related policies, are applicable to customers in the United States ("U.S.") government, financial services, healthcare, and other users of large data applications. The services can be delivered to legacy customer owned networks, or customers who rely upon cloud-based infrastructures. Since November 2019, the Company has made the following acquisitions that specialize in the areas noted above: •Corvus Consulting, LLC (“Corvus”), •Mainnerve Federal Services, Inc. dba MFSI Government Group (“MFSI"), •Merrison Technologies, LLC ("Merrison"), •Specialty Systems, Inc. (“SSI”), •the business assets of Pax River from The Albers Group (“Pax River”), •Lexington Solutions Group, LLC (“LSG”), and •Global Technology and Management Resources, Inc. ("GTMR"). The Company works with multiple investment bankers and contacts within its business network to identify potential acquisitions. With the exception of Pax River, all of these acquisitions were considered business combinations under Topic 805 Business Combinations of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”). See Note 3, “Disposition” for detail on the disposition of MFSI in 2024.

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