| Vendor | Awards | Awarded value | Top agency |
|---|---|---|---|
| Sierra Circuits, Inc. | 11 | $531K | Defense Microelectronics Activity |
| Sierra Cone, LLC | 4 | $932K | Forest Service |
| Sierra Electric Co | 5 | $5.3M | San Francisco |
| Sierra Forest Products | 5 | $14M | Forest Service |
| Sierra Forestry Contractor LLC | 7 | $237K | Forest Service |
| Sierra Four Industries Corp. | 3 | $5.4M | Department of the Army |
| Sierra Hydrographics | 15 | $5.1M | Department of the Army |
| Sierra JV | 5 | $688K | Department of the Navy |
| Sierra Lobo Inc | 3 | $109M | National Aeronautics and Space Administration |
| Sierra Management & Technologies Inc | 4 | $42M | Department of the Navy |
| Sierra Meat Company | 3 | $4.8M | Agricultural Marketing Service |
| Sierra Medical Services Alliance | 5 | $256K | Federal Prison System / Bureau of Prisons |
| Sierra Mountain Construction Inc | 19 | $28M | San Francisco |
| Sierra Nevada Company, LLC | 345 | $17.6B | Department of the Air Force |
| Sierra Rescue Co. LLC | 3 | $48K | Department of Energy |
| Sierra Sanitation, Inc. | 3 | $516K | Department of the Army |
| Sierra Space Corp | 17 | $104M | National Aeronautics and Space Administration |
| Sierra Springs | 19 | $587 | Oregon State Treasury |
| Sierra Tahoe Investigations | 5 | $1.4M | Social Security Administration |
| Sierra Valley Enterprises LLC | 3 | $5.7M | Forest Service |
| Sierra Victor Industries | 4 | $923K | MTA Procurements |
| SIERRA7, Inc. | 61 | $121M | Department of Veterans Affairs |
| Sierracin Corporation | 6 | $5.1M | Department of the Navy |
| Siertek, Ltd. | 18 | $26M | Department of the Air Force |
| Siertek-Peerless JV LLC | 5 | $50M | Department of the Air Force |
| Siete Inc | 4 | $27M | Federal Highway Administration |
| Sievert Electric Service and Sales Company | 16 | $25M | Department of the Army |
| Siewert Equipment Div of Cummins-Wagner-Siewert LLC | 5 | $63K | NY State Authorities |
| Sig Sauer Inc. | 173 | $969M | Department of the Army |
| Sigcon Solutions, LLC | 3 | $1.4M | Department of the Navy |
| Sight Diagnostics, Inc | 6 | $70K | Department of State |
| Sigma Aldrich Inc | 4 | $278K | Food and Drug Administration |
| Sigma Assessment Systems Inc | 5 | $262K | U.S. Special Operations Command |
| Sigma Defense Systems LLC | 22 | $318M | Federal Acquisition Service |
| Sigma Health Consulting, LLC | 9 | $52M | Department of Veterans Affairs |
| Sigma, K.k. | 4 | $35K | Department of the Navy |
| Sigma-Netics, Inc. | 5 | $377K | Defense Logistics Agency |
| Sigma Products & Mfg | 6 | $159K | Defense Logistics Agency |
| Sigma Ridge LLC | 3 | $123K | New York City |
| Sigma Surveillance, LLC DBA STS360 | 49 | $94K | Texas DIR |
| Sigma Tech Enterprises, Inc. | 7 | $137K | Defense Logistics Agency |
| Sigmatech Inc | 15 | $434M | Department of the Air Force |
| Sigmatek Systems, LLC | 3 | $65K | Department of the Army |
| Sigmovir Biosystems, Inc. | 4 | $3.2M | National Institutes of Health |
| Signal Engineering Inc | 19 | $7.2M | Defense Logistics Agency |
| Signal Hound, LLC | 3 | $383K | Department of the Navy |
| Signal Systems Corporation | 8 | $37M | Department of the Navy |
| Signal Training Solutions LLC | 3 | $540K | MTA Procurements |
| Signalscape Inc | 3 | $20M | Defense Threat Reduction Agency |
| Signature Building Systems Inc | 6 | $19M | MTA Procurements |
| Signature Choice II, LLC | 3 | $363M | Department of Veterans Affairs |
| The Signature Consulting Group, LLC | 4 | $15M | Centers for Medicare and Medicaid Services |
| Signature Flight Support LLC | 151 | $878K | Defense Logistics Agency |
| Signature Marketing | 5 | $36K | San Francisco |
| Signature Renovations LLC | 7 | $51M | Public Buildings Service |
| Signature Research, Inc. | 4 | $3.1M | Department of the Air Force |
| Signature Science LLC | 12 | $50M | Office of Procurement Operations |
| Signet Electronic Systems, LLC | 8 | $3.2M | Department of Veterans Affairs |
| Signet Maritime Corporation | 11 | $13M | U.S. Coast Guard |
| Signet Technologies, Inc. | 47 | $23M | Department of the Navy |
| Significance Inc | 18 | $75M | Department of the Navy |
| Sigo Valiant JV LLC | 7 | $44M | Department of Veterans Affairs |
| Sikich LLP | 3 | $195K | City of Chicago |
| Sikich Cpa LLC | 8 | $9.2M | National Aeronautics and Space Administration |
| Sikora Inc | 3 | $431K | Department of the Army |
| Sikorsky Aircraft Corporation | 9,796 | $25.7B | Defense Logistics Agency |
| Sikorsky Support Services Inc | 3 | $2.5M | Department of the Army |
| Silent Security Services Inc | 3 | $942K | Department of the Navy |
| Siler Cattle Company LLC | 5 | $2.0M | Bureau of Land Management |
| Siler Excavating LLC | 3 | $3.9M | Department of the Navy |
| Silhouette Farm & Forestry, LLC | 41 | $6.2M | Forest Service |
| Silicon Audio RF Circulator, LLC | 3 | $3.6M | Department of the Army |
| Silicon Mountain Technologies, LLC | 6 | $10M | Department of the Air Force |
| Siliconexpert Technologies, Inc. | 7 | $591K | Department of the Army |
| Silk Screen Express, Inc. | 12 | $66M | City of Chicago |
| Silkweb Consulting and Development LLC | 3 | $367K | Department of the Navy |
| Siller Helicopters, LLC | 4 | $9.8M | Forest Service |
| Silotech Group Inc | 9 | $13M | Department of the Air Force |
| Silsbee Ford | 10 | $507K | City of Mesquite |
| Silv Resource Services LLC | 12 | $263K | Forest Service |
| Silver Bay Seafoods, L.l.c. | 8 | $44M | Agricultural Marketing Service |
| Silver Bird Solutions LLC | 21 | $550K | Defense Logistics Agency |
| Silver Chain Kuwait Company | 3 | $34K | Department of State |
| Silver Eagle Manufacturing Co | 47 | $31K | Defense Logistics Agency |
| Silver Lake Construction LLC | 6 | $62M | Department of the Army |
| Silver Lake - TMG JV2, LLC | 13 | $7.3M | Department of the Army |
| Silver Line Tech LLC | 5 | $106K | Department of the Air Force |
| Silver Mountain Construction LLC | 34 | $94M | Department of the Army |
| Silver Mountain Holdings LLC | 8 | $3K | Defense Logistics Agency |
| Silver Mountain Weston SB JV LLC | 14 | $41M | Department of the Army |
| Silver National Corp. | 7 | $526K | Department of the Army |
| Silver Oakleaf Inc. | 12 | $8.9M | Defense Logistics Agency |
| Silver Ships, Inc | 13 | $106M | Department of the Navy |
| Silver Star Office Equipment Trading Co LLC | 4 | $137K | Department of State |
| Silver State Medical Supply LLC | 8 | $89K | Defense Logistics Agency |
| Silverado Contractors Inc | 17 | $11M | San Francisco |
| Silverback Associates LLC | 3 | $135K | Forest Service |
| Silverback Industries LLC Ian Gracey | 3 | $4.4M | NY State Authorities |
| Silvercup Studios NY, LLC | 4 | $18M | New York City |
| Silverking Collision Center, LLC | 5 | $445K | Federal Acquisition Service |
Vendor totals add up the award records RFPFinder holds: federal contract awards from USAspending.gov for the agencies and codes behind open notices, and state and local awards from open-data contract registers and purchase-order files. They are not a vendor's complete government revenue, and a register that lists a contract ceiling or repeats a contract can overstate spend. Names are grouped across spellings ("Corp" and "Corporation"); each award links to its source record. Subcontracts are prime contractors' subaward reports on USAspending.gov for the prime awards behind the same agencies and codes, and GSA Schedule contracts come from GSA eLibrary's MAS contractor list; both are matched to vendors by name.