4m Sigma Corporation
1900 W Emerson Pl, Seattle, WA 98119
Operating signal within 12 months from two or more independent sources.
What they make
Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals3345154M Sigma Corporation is an aerospace manufacturing company located in Seattle, Washington that designs, manufactures, and maintains flightline, hangar, and backshop test equipment; operational support equipment; airframe cable assemblies; and safety training equipment for commercial aviation and defense and homeland security industries. The company produces shorting adapters designed for fuel system applications.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Brooks Rand, INC. | Seattle | Analytical Laboratory Instrument Manufacturing 334516 | LIKELY ACTIVE | 0.6 KM |
| Fialab Instruments, INC. | Seattle | Analytical Laboratory Instrument Manufacturing 334516 | ACTIVE | 0.5 KM |
| Thermetrics, LLC | Seattle | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 334513 | ACTIVE | 0.6 KM |
| Rugged Controls LLC | Seattle | Other Measuring and Controlling Device Manufacturing 334519 | ACTIVE | 0.6 KM |
| Biosonics, INC | Seattle | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511 | ACTIVE | 0.8 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 8 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| SAM GOV | OPERATING | SEP 2025 | SEP 2025 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | SAM GOV | SEP 2025 |
| CAGE CODE | SAM GOV | SEP 2025 |
| CITY | SAM GOV | SEP 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| NAME | SAM GOV | SEP 2025 |
| REGISTRATION EXPIRATION | SAM GOV | SEP 2025 |
| STATE | SAM GOV | SEP 2025 |
| WEBSITE | SAM GOV | SEP 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.