Clostra Inc.

Clostra Inc., a Miami-based for-profit Subchapter S corporation, conducts defense research and development as a prime contractor under the Small Business Innovation Research (SBIR) program, competing exclusively under total small business set-aside restrictions across 27 federal awards with no subcontractor footprint. The company specializes in machine learning, artificial intelligence, graph neural networks, and censorship-resistant technologies for defense applications, with recent work spanning SBIR Phase I and Phase II contracts across multiple defense agencies.

Clostra's customer base concentrates heavily on defense research agencies. By award count, the top five agencies account for 70% of recent awards: the Defense Threat Reduction Agency (6 awards, $1.9 million combined potential value), the Department of the Army (5 awards, $4.9 million), the Department of the Army Materiel Command Research Development and Engineering Command (3 awards, $1.3 million), the Defense Advanced Research Projects Agency (3 awards, $3.7 million), and the Department of the Air Force Materiel Command Research Laboratory (2 awards, $930 thousand). By dollar value, the rankings shift: the US Agency for Global Media Office of Technology Services and Innovation anchors one award at $5 million, followed by the Army ($4.9 million across five awards), DARPA ($3.7 million across three), United States Special Operations Command ($2.2 million across two), and DTRA ($1.9 million across six). The two rankings diverge on volume versus scale — DTRA places many small Phase I awards while USAGM and DARPA carry larger Phase II and specialized research contracts.

Clostra's recent SBIR portfolio spans Phase I and Phase II awards. Representative Phase II contracts include a $1.7 million SBIR Phase II from the Army for Graph Neural Networks for Unmanned Systems Collaborative Agent Control (August 2023), a $2 million SBIR Phase II from DARPA for Hidden Mobile Anti-Totalitarian Humanets technology (April 2022), and a $1 million Army SBIR Phase II for research on Height of Burst Scoring Through Machine Learning (September 2022). Phase I awards include a $199,999 DTRA contract for AI-ML data extraction from scientific documents (December 2025), a $180,000 Air Force Research Laboratory contract for unspecified SBIR Phase I work (September 2024), and a $167,499 DTRA award for automated detection training and interpretation (August 2024). The company also received a $1 million federal grant from the Bureau of Democracy, Human Rights and Labor (CFDA 19.345) to expand the censorship-resistant Newnode network in Belarus, with performance from September 2022 through September 2024. All contract work is performed in Miami, Florida.

Activity has remained modest: three awards in 2021, five in 2022, four in 2023, three in 2024, and one in 2025, with combined potential value of $20.4 million and $18 million already obligated (88% of potential). The company's research orientation centers on NAICS 541712 (Research and Development in Physical, Engineering, and Life Sciences except Nanotechnology and Biotechnology), covering 23 of 27 awards, with primary PSC coding in National Defense R&D Services across applied research and experimental development. Clostra operates exclusively as a prime on small-business set-asides with no subcontractor relationships in the award record; the absence of sub-tier work or teaming relationships reflects its posture as a direct SBIR research performer rather than a systems integrator or service provider.

Machine learning applications for diverse environments, from finance to medical diagnostics to defense. Development of wide range of mobile apps, from cognitive training tools to secure messaging systems. Extensive knowledge of cybersecurity.