01 / Vendor Profile
MAINSTEM LLC Federal Contracts and Awards
UEI SXHHGF88NPK4 · CAGE 63EE4
Federal contract activity attributed to this vendor identity across FY 2019–FY 2025. Obligations are FPDS accounting transactions, not company revenue.
02 / Federal Business Size
Federal contract market at a glance
Measured consistently across FY 2019–FY 2025.
Across FY 2019–FY 2025, FPDS records attribute $35.96M in net contract obligations to MAINSTEM LLC across 49 contract actions. Net obligations include positive obligations and later deobligations recorded during the same period.
03 / Spending Trend
MAINSTEM LLC contract spending by year
Annual net obligations show whether recorded federal business expanded or contracted, while actions and customer counts show the breadth of that activity.
Total obligations$493.3K
FY 2025ObligationsHistorical spending range
| Fiscal year | Obligations | Actions | Federal customers | Change |
|---|---|---|---|---|
| FY 2019 | $213.7K | 2 | 1 | — |
| FY 2020 | $4.59M | 8 | 2 | +2,048.0% |
| FY 2021 | $226.9K | 3 | 2 | −95.1% |
| FY 2022 | $13.98M | 10 | 1 | +6,062.1% |
| FY 2023 | $12.32M | 12 | 1 | −11.9% |
| FY 2024 | $4.14M | 11 | 1 | −66.4% |
| FY 2025 | $493.3K | 3 | 1 | −88.1% |
04 / Federal Customers
Which federal agencies buy from MAINSTEM LLC?
Ranked by net obligations during FY 2019–FY 2025.
| Agency | Code | Obligations | Actions | Vendor share |
|---|---|---|---|---|
| 5700 | $33.65M | 47 | 93.6% | |
| 97AE | $2.32M | 2 | 6.4% |
05 / Contracting Offices
Which contracting offices buy from MAINSTEM LLC?
Ranked by net obligations during FY 2019–FY 2025.
| Office | Code | Agency | Obligations | Actions | Vendor share |
|---|---|---|---|---|---|
| FA7146 | DEPT OF THE AIR FORCE | $31.56M | 38 | 87.8% | |
| HR0011 | DEFENSE ADVANCED RESEARCH PROJECTS AGENCY (DARPA) | $2.32M | 2 | 6.4% | |
| FA8730 | DEPT OF THE AIR FORCE | $1.42M | 1 | 4.0% | |
| FA8726 | DEPT OF THE AIR FORCE | $450.0K | 5 | 1.3% | |
| FA8652 | DEPT OF THE AIR FORCE | $140.2K | 1 | 0.4% | |
| FA9453 | DEPT OF THE AIR FORCE | $73.5K | 2 | 0.2% |
06 / Top NAICS Industries
Which industries define this vendor’s federal work?
| NAICS | Description | Obligations | Actions | Customers | Share |
|---|---|---|---|---|---|
| 541990 | ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES | $31.56M | 38 | 1 | 87.8% |
| 541715 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY) | $2.53M | 5 | 2 | 7.0% |
| 541511 | CUSTOM COMPUTER PROGRAMMING SERVICES | $1.87M | 6 | 1 | 5.2% |
07 / Top Product and Service Codes
What products and services does the government buy from this vendor?
| PSC | Description | Obligations | Actions | Customers | Share |
|---|---|---|---|---|---|
| R425 | SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL | $31.16M | 37 | 1 | 86.6% |
| AD93 | R&D- DEFENSE OTHER: OTHER (ADVANCED DEVELOPMENT) | $4.19M | 8 | 2 | 11.7% |
| 7021 | INFORMATION TECHNOLOGY CENTRAL PROCESSING UNIT (CPU, COMPUTER, DIGITAL) | $399.7K | 1 | 1 | 1.1% |
| AC61 | R&D- DEFENSE SYSTEM: ELECTRONICS/COMMUNICATION EQUIPMENT (BASIC RESEARCH) | $140.2K | 1 | 1 | 0.4% |
| AC21 | R&D- DEFENSE SYSTEM: MISSILE/SPACE SYSTEMS (BASIC RESEARCH) | $73.5K | 2 | 1 | 0.2% |
08 / Competition Pattern
How was MAINSTEM LLC’s federal work competed?
Competition categories describe the procurement path recorded on the underlying contract actions.
09 / Recent Contract Awards
What contract actions were recorded most recently for MAINSTEM LLC?
The latest recorded PIIDs connect this profile to the underlying federal award search.
| Award / PIID | Signed | Obligation | Agency / office | NAICS | PSC |
|---|---|---|---|---|---|
| FA714623F0005 | Jan 28, 2025 | $493.3K | DEPT OF THE AIR FORCE FA7146 SAF OC PK | 541990 | R425 |
10 / Interpreting the Profile
How should you evaluate MAINSTEM LLC as a federal contractor?
Read obligations, customers, markets, competition, and individual awards together. A large historical total indicates federal scale, but it does not by itself describe current backlog, commercial revenue, profitability, or future opportunity.
Separate obligations from revenue
FPDS obligations are government accounting actions and may include later deobligations.
Follow customer concentration
Agency and office concentration reveals where the vendor’s federal relationships are strongest.
Test market overlap
NAICS and PSC shares show whether the vendor competes in the same markets as your company.
Inspect the awards
Open the PIIDs to verify dates, offices, classifications, and transaction history.