Actelion Pharmaceuticals Us, INC

• Plant closing notice effective MAY 28, 2021 · 35 employees · filed APR 6, 2021 · Closure Permanent — this notice is why the plant is listed as reported closed

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
CFCompound Focus INC Dba Biofocus Dp1	South San Francisco	Pharmaceutical Preparation Manufacturing 325412	◇ UNVERIFIED	0.7 KM
NBNgm Biopharmaceuticals INC	South San Francisco	Biological Product (except Diagnostic) Manufacturing 325414	◇ UNVERIFIED	0.8 KM
PTPliant Therapeutics INC.	South San Francisco	Pharmaceutical Preparation Manufacturing 325412	◐ LIKELY ACTIVE	0.9 KM
CICellares INC	South San Francisco	Biological Product (except Diagnostic) Manufacturing 325414	◇ UNVERIFIED	0.9 KM
Denali Therapeutics INC.	South San Francisco	Pharmaceutical Preparation Manufacturing 325412	● ACTIVE	0.9 KM

Every listed plant in San Mateo County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 7 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 RCRAINFO · EPA site type STATIONARY.

• State WARN plant-closing and layoff noticesCLOSURE
  first seen MAY 2021 · last seen MAY 2021
• EPA Facility Registry ServiceEXISTENCE
  Record 110070582956 · first seen AUG 2019 · last seen AUG 2019

IN SAN MATEO COUNTY207 other plants share this one’s industry (Pharmaceutical and Medicine Manufacturing, NAICS 3254); 7 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: ACTELION PHARMACEUTICALS US, INC · NOV 2026

Street address

EPA: 5000 SHORELINE CT · NOV 2026

City

EPA: SOUTH SAN FRANCISCO · NOV 2026

State

EPA: CA · NOV 2026

County (FIPS code)

EPA: 06081 · NOV 2026

Coordinates

EPA: 37.670589,-122.388945 · NOV 2026

Hazardous waste generator (RCRA)

EPA ECHO: none · NOV 2026