Coltrane Systems LLC
St. Louis, MO
- UEI
- H811JDUC9ML4
- CAGE
- 6ZQN6
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- SAM.gov registration date
- Physical address
- 2818 Locust St, St. Louis, MO 63103, USA
- Website
- coltranesystems.com
- Founded
- 2013
- Employees
- 51-250
- Estimated annual revenue
- $10M-$50M
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- SIC code
- 17 Special Trade Contractors
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Science Applications International Corporation | HTC71124FD028 | $179,780 | |
| Mantech Tsg-2 Joint Venture | FA807522F0017 | $585,121 | |
| HOF Construction Inc. | 47PG0224F0056 | $1,962,120 | |
| Mantech Tsg-2 Joint Venture | FA807522F0017 | $76,000 | |
| Rock JV, LLC | 36C25523C0119 | $868,536 |
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| BBA Construction LLC | Bloomington, IL | 236220 Commercial and Institutional Building Construction |
| KDC Inc. | Los Alamitos, CA | 238210 Electrical Contractors and Other Wiring Installation Contractors |
| Owen Electric Company, Inc. | St. Augustine, FL | 238210 Electrical Contractors and Other Wiring Installation Contractors |
| DEI Consulting | Sterling, VA | 541330 Engineering Services |
| Cape Electrical Supply LLC | Cape Girardeau, MO | 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers |
About the company
Coltrane Systems LLC, a St. Louis-based limited liability company, operates exclusively as a subcontractor to federal primes, delivering specialized engineering, IT infrastructure, and facilities services across defense, civilian, and VA customer bases. The vendor has no prime awards in the source dataset and does not hold seats on government-wide vehicles or agency IDIQs; all six recent awards are subcontracts placed by larger defense and construction contractors.
Coltrane's recent work spans defense modeling-and-simulation engineering, IT infrastructure modernization, and federal facilities systems integration. The vendor subcontracts to ManTech TSG-2 Joint Venture on two weapons systems and aviation warfare modeling, simulation, and cybersecurity engineering tasks for Naval Surface Warfare Center, Corona Division (awarded Aug 2024 and Jul 2025). Coltrane also delivers managed IT services — including planar video wall installation and professional services — as a sub to Science Applications International Corporation (awarded Sep 2025), provides electrical and fire-alarm subcontract work to HOF Construction Inc. on a GSA federal building smoke control system replacement in St. Louis (awarded Aug 2024), performs air-handling-unit replacement electrical work under Rock JV LLC (awarded Dec 2023), and delivered low-voltage and fire-alarm electrical services to Tarlton Corp on federal facilities modifications (awarded Feb 2023).
Customer concentration is distributed across the Department of the Navy (2 awards), with single awards from the Department of the Interior National Park Service, the Department of Veterans Affairs Veterans Health Administration, the General Services Administration Public Buildings Service Region 6, and the Department of the Air Force Air Mobility Command — spanning 100% of recent awards across five distinct customer agencies. The two highest-value relationships sit with ManTech TSG-2 Joint Venture and Science Applications International Corporation. Work category splits between Commercial and Institutional Building Construction (3 awards) and Research and Development in Physical, Engineering, and Life Sciences (2 awards), with one computer facilities management award. The vendor places task orders under the Information Analysis Center Multiple-Award Contract (2 task orders), the GSA Heartland R6 Design Build IDIQ 2020–2025 (1 task order), and an indefinite delivery contract (1 task order). SCI-reported activity shows 9.6 FTEs across federal service contracts in FY2024 and 4.6 FTEs in FY2025, reflecting a downturn in subcontracted service-hour volume year over year. All recent awards carry combined obligated dollars of $9.1 million and show activity at a steady two-award-per-year pace.
Quick answers
Is Coltrane Systems LLC registered in SAM.gov?
Yes. Coltrane Systems LLC's SAM.gov registration is active through January 5, 2027.
On GovTribe
See Coltrane Systems LLC's full federal record
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors