La Semiconductor LLC

• WARN notice effective MAY 31, 2026 · 342 employees · filed FEB 9, 2026 — 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

• mixed signal
• defense
• aerospace
• automotive
• medical
• semiconductor manufacturing processes
• Rad-Hard capabilities
• security concerns
• extreme environmental conditions

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Where it is

Other plants nearby

Every listed plant in Bannock County

Also at this address

No other federal record shares this street address.

Where this record comes from

8 sources hold this plant, and 12 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 AIR, AIRS/AFS, BR, E-GGRT, EIS, ICIS, IDDEQ, NCDB, NPDES, RCRAINFO, TRIS · EPA site type STATIONARY.

• The company’s own websiteOPERATING
  first seen JUL 2026 · last seen OCT 2026
• State WARN plant-closing and layoff noticesEXISTENCE
  first seen MAY 2026 · last seen MAY 2026
• OSHA injury and illness reportsOPERATING
  Record 945279 · first seen DEC 2025 · last seen DEC 2025
• SAM.gov entity registrationOPERATING
  Record Q29UEJSMM274 · first seen NOV 2025 · last seen NOV 2025
• Idaho Secretary of State business registryOPERATING
  Record ID:843037 · first seen AUG 2025 · last seen AUG 2025
• DOL Form 5500 retirement plan filingsOPERATING
  Record 881145409|ID|83201|2300 w buckskin rd · first seen DEC 2024 · last seen DEC 2024
• EPA Toxics Release InventoryOPERATING
  first seen DEC 2024 · last seen DEC 2024
• EPA Facility Registry ServiceEXISTENCE
  Record 110055553681 · first seen APR 2019 · last seen APR 2019

ALSO RECORDED ASLA SEMICONDUCTOR; ON SEMICONDUCTOR INC

IN BANNOCK COUNTY2 other plants share this one’s industry (Semiconductor and Other Electronic Component Manufacturing, NAICS 3344); 0 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.

NameSOURCES DISAGREE

EPA: LA SEMICONDUCTOR · JUL 2026

SAM.gov: LA SEMICONDUCTOR LLC · NOV 2025 · ON THIS PAGE

Street addressSOURCES DISAGREE

EPA: 2300 BUCKSKIN RD · JUL 2026

SAM.gov: 2300 W BUCKSKIN RD · NOV 2025 · ON THIS PAGE

City

EPA: POCATELLO · JUL 2026 · ON THIS PAGE

SAM.gov: POCATELLO · NOV 2025 · ON THIS PAGE

State

EPA: ID · JUL 2026 · ON THIS PAGE

SAM.gov: ID · NOV 2025 · ON THIS PAGE

County (FIPS code)

EPA: 16005 · SEP 2026

Coordinates

EPA: 42.866748,-112.414601 · JUL 2026

Employees (band)

OSHA: 100-499 · DEC 2025

Website

SAM.gov: lasemiconductor.com · NOV 2025

CAGE code

SAM.gov: 9HA81 · NOV 2025

Retirement plan filing (Form 5500)

DOL: 380 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024

SAM registration expires

SAM.gov: 2026-11-04 · NOV 2025

State business registration

ID SOS: LA Semiconductor LLC, registered with the Idaho Secretary of State; Limited liability company formed in Ohio; registered 2022-09-28; active, annual report filed 2025-08-01 · AUG 2025