Castellum Inc.
MD
- UEI
- NLUKNBJ4CLK1
- CAGE
- 8V5V9
- Primary NAICS
- 541330 Engineering Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
-
- 541330 Engineering Services Primary
- 541511 Custom Computer Programming Services
- 541513 Computer Facilities Management Services
- 541519 Other Computer Related Services
- 541611 Administrative Management and General Management Consulting Services
- 541618 Other Management Consulting Services
- 541690 Other Scientific and Technical Consulting Services
- 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- Corporate family
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Castellum Inc.
NLUKNBJ4CLK1
- Corvus Consulting, LLC SAR4JHRWMNM3
- CTM JV, LLC NFNHH3CYQWN7
- Global Technology And Management Resources, Inc. R9E3DLNZMYS3
- Specialty Systems, Inc. CQ1DPC4G5PS8
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Castellum Inc.
NLUKNBJ4CLK1
- SAM.gov registration date
- Physical address
- 44145 Airport View Dr Unit 102 Ofc 1, Hollywood, MD 20636, USA
- Website
- castellumus.com
- Founded
- 2019
- Employees
- 11-50
- Estimated annual revenue
- $1M-$10M
- Industry
-
- Information Technology
- Software & Services
- Internet Software & Services
- SIC code
- 73 Business Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
About Castellum Inc.
Castellum Inc. is a corporate entity registered to receive awards from the U.S. federal government since November 17, 2020, with its current registration in SAM.gov set to expire on February 5, 2025. As a for-profit organization, Castellum Inc. specializes in providing services related to cybersecurity, information technology, information warfare, and electronic warfare to the federal government. The company has established itself as a subcontractor, working on federal contract sub-awards in collaboration with prime contractors to deliver critical technological and security-related services.
The federal contract sub-awards received by Castellum Inc. demonstrate its expertise in cyber security, information technology, information warfare, and electronic warfare. These sub-awards, all under the same prime contract (H9222215D0022|47QFSA21F0009), indicate a consistent focus on these specialized areas. Castellum Inc. has partnered with Booz Allen Hamilton Inc., a major player in the government contracting space, as the prime contractor for these sub-awards. This partnership suggests that Castellum Inc. possesses valuable capabilities and expertise that complement Booz Allen Hamilton's prime contract work. The repetitive nature of the sub-award descriptions implies that Castellum Inc. is likely providing ongoing support or a series of related services within these technological and security domains for the federal government.
Quick answers
What is Castellum Inc.'s UEI?
Castellum Inc.'s Unique Entity ID (UEI) in SAM.gov is NLUKNBJ4CLK1.
What is Castellum Inc.'s CAGE code?
Castellum Inc.'s CAGE code is 8V5V9.
What is Castellum Inc.'s primary NAICS code?
Castellum Inc.'s primary NAICS code is 541330 (Engineering Services).
Where is Castellum Inc. located?
Castellum Inc.'s physical address in SAM.gov is 44145 Airport View Dr Unit 102 Ofc 1, Hollywood, MD 20636, USA.
Is Castellum Inc. registered in SAM.gov?
Yes. Castellum Inc.'s SAM.gov registration is active through November 13, 2026.
On GovTribe
See Castellum Inc.'s full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors