Progressiverc, LLC | Seattle | — | ● ACTIVE |
Radical INC. | Seattle | — | ● ACTIVE |
| RERaisbeck Engineering, INC. | Tukwila | — | ● ACTIVE |
Rocket Propulsion Systems LLC | Kent | — | ● ACTIVE |
Rydberg Vacuum Sciences INC | Renton | — | ● ACTIVE |
| SISkills, INC. | Auburn | — | ● ACTIVE |
Skookum Enterprises, LLC | Auburn | — | ● ACTIVE |
Sleek Aerodyne Automotive LLC | Seattle | — | ● ACTIVE |
Space Valves, INC. | Tukwila | — | ● ACTIVE |
Stabbert Marine & Industrial, LLC | Seattle | — | ● ACTIVE |
The Boeing Company | Tukwila | — | ● ACTIVE |
Thomas E LLC | Seattle | — | ● ACTIVE |
Walashek Industrial & Marine, INC. | Tukwila | — | ● ACTIVE |
Wave Motion Launch Corporation | Seattle | — | ● ACTIVE |
Wegmatt LLC | Redmond | — | ● ACTIVE |
| WCWest Coast Industries INC | Shoreline | — | ● ACTIVE |
Wooldridge Boats, INC | Seattle | — | ● ACTIVE |
Xplore INC | Bellevue | — | ● ACTIVE |
| PAPrimus Auburn | Algona | 100–499 | ◐ LIKELY ACTIVE |
| AMArima Marine International INC | Auburn | — | ◐ LIKELY ACTIVE |
| BFBoeing Fabrication Div | Auburn | — | ◐ LIKELY ACTIVE |
| BRBoeing Renton Bfe Building | Renton | — | ◐ LIKELY ACTIVE |
| RTRanger Tugs Kent | Kent | — | ◇ UNVERIFIED |
Hahl Maritime LLC | Shoreline | — | ◐ LIKELY ACTIVE |
| SAStrigidyne Aerospace INC. | Kent | — | ◐ LIKELY ACTIVE |
Terminal Autonomy INC | Seattle | — | ◐ LIKELY ACTIVE |
| APAero Plastics INC | Renton | 20–99 | ◐ LIKELY ACTIVE |
| AAAim Aviation | Renton | — | ◐ LIKELY ACTIVE |
| BOBlue Origin Manufacturing LLC Davinci | Renton | — | ◐ LIKELY ACTIVE |
| BABoeing a and M Developmental Center | Tukwila | — | ◐ LIKELY ACTIVE |
| BLBoeing Longacres | Renton | — | ◐ LIKELY ACTIVE |
| BSBoeing Space Center Kent | Kent | — | ◐ LIKELY ACTIVE |
| EMExotic Metals Forming Company LLC | Kent | — | ◐ LIKELY ACTIVE |
| FMFoss Maritime CO | Seattle | — | ◐ LIKELY ACTIVE |
| HEHarper Engineering Company | Renton | 20–99 | ◐ LIKELY ACTIVE |
| HMHirschler Manufacturing | Kirkland | 20–99 | ◐ LIKELY ACTIVE |
| HIHoneywell International INC. | Redmond | — | ◐ LIKELY ACTIVE |
| JCJemco Components & Fabrication, INC. | Kirkland | — | ◐ LIKELY ACTIVE |
| NSNorthland Services INC Fox Ave | Seattle | — | ◐ LIKELY ACTIVE |
| PIPioneer Industries Plant 2 | Seattle | 20–99 | ◐ LIKELY ACTIVE |
| TITriumph Integrated Systems | Redmond | 20–99 | ◐ LIKELY ACTIVE |
| UMUnited Marine Shipbuilding | Seattle | — | ◐ LIKELY ACTIVE |
| 8E8801 E Marginal Way S | Tukwila | — | ◇ UNVERIFIED |
| ARAerojet Redmond Facility | Redmond | — | ◇ UNVERIFIED |
| AAAim Aviation Auburn INC W Valley | Auburn | — | ◇ UNVERIFIED |
| AAllflight | Kent | — | ◇ UNVERIFIED |
| BKBanta Kent | Kent | — | ◇ UNVERIFIED |
| BABoeing Aandm Electronic Mfg Facility | Seattle | — | ◇ UNVERIFIED |
| BMBoeing Military Flight Center | Tukwila | — | ◇ UNVERIFIED |
| BSBoeing South Park | Seattle | — | ◇ UNVERIFIED |