US WARN intelligence

Sema4 layoffs & WARN notices

Sema4 appears in 2 non-cancelled imported WARN records across 1 states. These records report 606 affected workers; 0 have future effective dates. Totals include imported records only. Secondary records are attributed separately.

What the official notice history shows

During the last 365 days, this imported archive contains 0 eligible official filings for Sema4. Worker counts are unavailable for this period. 0 worker counts are unavailable.

0 non-cancelled direct government records and 2 attributed secondary records appear in the full archive. These figures describe notices, not unique people or completed layoffs. Grouped company names do not establish ownership.

Compare original weekly and monthly official-data reports → · How dates, names and counts are interpreted

2Non-cancelled notices
606Reported workers
0Future effective dates
Coverage is limited to connected sources and imported date ranges. 0 notices have unavailable worker counts. Company groups match normalized names; aliases below preserve exact employer names from filings. Methodology →

State breakdown

StateNoticesReported workersUpcoming events
Connecticut26060

Reported employer names

Notice history by year

20222 notices · 606 reported workers

Filings and attributed reports

Company / locationWorkersEffective dateNotice dateType / source
Sema4Stamford, Branford · CT recordSecondary · WARN Feed448Jan 13, 2023Nov 14, 2022UnavailableSource ↗
Sema4Stamford, Branford · CT recordSecondary · WARN Feed158Oct 14, 2022Aug 15, 2022UnavailableSource ↗

2 notices · Source check Oct 8, 2026