Synqor, INC.

• WARN notice effective FEB 1, 2026 · 250 employees · filed NOV 25, 2025 — recorded; it does not change the status

Notices filed with the state under the federal WARN Act, as the state publishes them, collected by the WARN Act notices feed (CC BY 4.0). A notice records what the employer told the state; it is not by itself proof that the plant closed.

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
CWCurtiss Wright Controls	Littleton	Other Electronic Component Manufacturing 334419	◇ UNVERIFIED	4.0 KM
CCCurtiss-wright Controls Embedded Computing	Littleton	Other Electronic Component Manufacturing 334419	◇ UNVERIFIED	4.6 KM
DADiamond Antenna & Microwave Corporation	Littleton	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511	● ACTIVE	4.6 KM
TSTelesource Services INC	Bolton	Telephone Apparatus Manufacturing 334210	● ACTIVE	5.7 KM
Renaissance Electronics & Communications, LLC	Harvard	Other Electronic Component Manufacturing 334419	● ACTIVE	5.0 KM

Every listed plant in Middlesex County

Also at this address

No other federal record shares this street address.

Where this record comes from

5 sources hold this plant, and 9 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in MA-EPICS, RCRAINFO, TRIS · EPA site type STATIONARY.

• State WARN plant-closing and layoff noticesEXISTENCE
  first seen FEB 2026 · last seen FEB 2026
• DOL Form 5500 retirement plan filingsOPERATING
  Record 043534652|MA|01719|155 swanson rd · first seen JUN 2025 · last seen JUN 2025
• EPA Toxics Release InventoryOPERATING
  first seen DEC 2023 · last seen DEC 2024
• EPA Facility Registry ServiceEXISTENCE
  Record 110017222539 · first seen JUN 2016 · last seen JUN 2016
• EPA ECHO compliance recordsOPERATING
  first seen FEB 2012 · last seen FEB 2012

IN MIDDLESEX COUNTY156 other plants share this one’s industry (Semiconductor and Other Electronic Component Manufacturing, NAICS 3344); 43 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

EPA: SYNQOR, INC. · OCT 2026

Street address

EPA: 155 SWANSON RD · OCT 2026

City

EPA: BOXBOROUGH · OCT 2026

State

EPA: MA · OCT 2026

County (FIPS code)

EPA: 25017 · OCT 2026

Coordinates

EPA: 42.493137,-71.54554 · OCT 2026

Employees (band)

DOL: 100-499 · JUN 2025

Retirement plan filing (Form 5500)

DOL: 279 active participants, plan year ending 2025-06-30, 7 plan(s) · JUN 2025

Hazardous waste generator (RCRA)

EPA ECHO: VSQG · OCT 2026