Spark Therapeutics, Inc.

Philadelphia, Pennsylvania

298 workers ยท Layoff

A WARN notice is filed with the state before a plant closing or a mass layoff, under the federal WARN Act or a state law like it. Workers is the number the employer said would be affected; plans can change after filing. Data sources

Company
Spark Therapeutics, Inc.
Workers
298 workers
Kind
Layoff
Effective date
May 9, 2025
Location
Philadelphia
State
Pennsylvania
Notice
pa-9afb80bf1b8b84d2

As published

company
Spark Therapeutics, Inc.
addressfull
2929 Arch Street, Philadelphia, PA 19104 , 3025 Market Street, Philadelphia, PA 19104 , 3737 Market Street, Philadelphia, PA 19104
county
Philadelphia
jobs
298
date_effective
first wave - 5/9/2025 impacting 124 workers ... second wave - 7/1/2025 impacting 112 workers ... final wave ending - 12/31/2025 impacting 62 workers
closure_or_layoff
Layoff

From the Pennsylvania Department of Labor and Industry's WARN list, row 185, read Oct 3, 2026; first seen here Oct 3, 2026. Read with Big Local News's warn-scraper and warn-transformer.