Secondary report · provider attributed

Mersana Therapeutics WARN notice — MA, 2023-07-27

Name: Mersana Therapeutics, Inc. WARN notice
Creator: WARN Feed
License: https://creativecommons.org/licenses/by/4.0/

WARN Feed secondary report: Mersana Therapeutics, Inc. reported 124 workers affected in Massachusetts. Notice date: Jul 27, 2023; planned effective date: Aug 15, 2023.

Raw employer name: Mersana Therapeutics, Inc.
Canonical company: Mersana Therapeutics →
Workers affected: 124
Event type: Unavailable
Filing status: Unavailable
Provider notice date (unverified): Jul 27, 2023
Effective date: Aug 15, 2023
City: Unavailable
County: Unavailable
State: Massachusetts →
ZIP: Unavailable
Reported location: Cambridge
Published address: Unavailable
Source classification: Unavailable
Jurisdiction agency reference: Massachusetts Department of Career Services

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Original source & provenance

Licensed secondary report
WARN Feed · CC BY 4.0
Provider snapshot: Sep 25, 2026 · STALE
Government document not independently verified.

Open supplied source ↗

Government agency reference
Massachusetts Department of Career Services

Source ID / record ID
ma-dcs / warn-feed:d2082953ff0c7d27

First ingested
Oct 7, 2026 · 13:23 UTC

Last observed
Oct 7, 2026 · 13:23 UTC

Snapshot SHA-256
6df3cb60fd6fd943dea9e27ca09dae0d5579c93c13083748ede587e98c2c4d1f

View original source row

{
  "provider": "WARN Feed",
  "providerUrl": "https://approjects-warn-act-notices.static.hf.space/",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "generatedAt": "2026-09-25T00:11:25.651533Z",
  "reported": {
    "id": "d2082953ff0c7d27",
    "state": "MA",
    "company": "Mersana Therapeutics, Inc.",
    "company_canonical": "Mersana Therapeutics",
    "company_dba": "",
    "location": "Cambridge",
    "employees_affected": "124",
    "notice_date": "2023-07-27",
    "effective_date": "2023-08-15",
    "notice_type": "",
    "first_seen": "2023-07-27T00:00:00Z"
  },
  "transforms": [
    "Canonical employer name normalized locally.",
    "Unstructured locations are preserved without guessing city, address or ZIP.",
    "NJ provider dates have imputed first-of-month days; notice date withheld."
  ]
}

A source-linked public record. Secondary records are attributed to their provider and are not independently verified. For direct records, “Verified” means sourced from an official agency; it does not confirm the layoffs took place.

Dates and counts are the supplied source’s reported values. Secondary-provider locations are unstructured; they are not confirmed worksite addresses. Check the original document for phased dates, updates and exceptions.

Mersana Therapeutics WARN notice — MA, 2023-07-27

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