Capesym Inc.
Natick, MA Doing business as Cape Simulations
- UEI
- CSZST8YFP7K1
- CAGE
- 1SB50
- Primary NAICS
- 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- SAM.gov registration date
- Physical address
- 6 Huron Dr, Natick, MA 01760, USA
- Website
- capesym.com
- Founded
- 1992
- Employees
- 11-50
- Estimated annual revenue
- $1M-$10M
- Industry
-
- Health Care
- Pharmaceuticals, Biotechnology & Life Sciences
- Life Sciences Tools & Services
- SIC code
- 87 Engineering & Management Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $863,624 |
| FY2025 | $574,854 |
| FY2024 | $3,145,300 |
| FY2023 | $2,941,805 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Homeland Security | $741,195 | |
| 2 | Department of the Navy | $122,429 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Charles River Analytics, Inc. | 70RWMD20C00000003 | $300,002 |
Grant awards
Latest 5 listed here. See the rest on GovTribe.
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About the company
Capesym Inc., doing business as Cape Simulations, is a small for-profit manufacturer and technical services firm located in Natick, Massachusetts, specializing in advanced materials engineering, radiation detection technologies, and semiconductor research. The company primarily serves federal government defense and civilian agencies, offering sophisticated technical crystals, thermal analysis software, materials characterization, and engineering consulting services. Capesym has established itself as a key contractor in developing cutting-edge technologies for nuclear physics, homeland security, and energy research applications, consistently securing federal contracts and grants through programs like Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR).
Through federal contract awards, Capesym Inc. has demonstrated extensive expertise in developing specialized radiation detection and sensing technologies for multiple defense agencies. The company has secured numerous contracts with agencies such as the Defense Threat Reduction Agency (DTRA), Missile Defense Agency (MDA), Office of Naval Research, Countering Weapons of Mass Destruction (CWMD), and the Office of the Secretary of Defense. These contracts, predominantly set aside for small businesses, have focused on developing advanced technologies including large cadmium zinc telluride (CZT) crystals, rugged ultrafast radiation hard scintillators, semiconductor-based radiation detection instruments, and innovative systems for nuclear battlefield applications. The contract values have ranged from approximately $15,000 to over $3.7 million, highlighting the company's capability to execute both small and large-scale research and development projects.
Capesym Inc. has also been a recipient of federal grant awards, primarily from the Department of Energy's Office of Science, with a focus on developing advanced scientific instrumentation and detection technologies. The grant awards have supported research in areas such as high quantum efficiency scintillators for dual readout calorimetry, photon counting single crystal perovskite x-ray cameras, high spatial resolution detectors for nuclear physics applications, and scintillator development for high-frequency free-electron laser x-ray sources. Additionally, the company received a significant $925,411 grant from the National Institute of Mental Health to develop high-performance, low-cost direct-conversion X-ray imaging technology based on perovskite sensors for medical imaging applications. These grants, typically ranging from $200,000 to nearly $1.3 million, demonstrate Capesym's technical versatility and ability to contribute to fundamental research initiatives across various scientific domains.
Quick answers
Is Capesym Inc. registered in SAM.gov?
Yes. Capesym Inc.'s SAM.gov registration is active through May 18, 2027.
How much has Capesym Inc. received in federal contracts?
Federal contracts obligated $574,854 to Capesym Inc. in fiscal year 2025 and $7,525,583 in fiscal years 2023 through 2027.
How does Capesym Inc. rank among federal contractors?
Capesym Inc. ranked #28 in PSC 5955 in FY2025.
What is Capesym Inc.'s most recent federal award?
Capesym Inc.'s most recent federal grant award is High-resolution direct-conversion x-RAY detectors for low-dose imaging (R44EB038123), from National Institute of Biomedical Imaging and Bioenginering (NIH), on September 1, 2025.
On GovTribe
See Capesym Inc.'s full federal record
- Federal contract awards
- IDV awards
- Federal grant awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors