Mersana Therapeutics, Inc.

CIK 1442836 · operating company. SEC filings, financial statements, 10-K sections, 8-K items and insider trades for Mersana Therapeutics, Inc..

Recent SEC filings

FiledFormAccession number
May 15, 2026SCHEDULE 13G/A0001404574-26-000016
Feb 17, 2026SCHEDULE 13G/A0001404574-26-000005
Feb 17, 2026SCHEDULE 13G/A0001193805-26-000140
Jan 30, 2026SCHEDULE 13G/A0000102909-26-000157
Jan 16, 202615-12G0001104659-26-004556
Jan 9, 2026SCHEDULE 13G/A0001916761-26-000002
Jan 8, 2026EFFECT9999999995-26-000105
Jan 8, 2026SCHEDULE 13D/A0001193125-26-007752
Jan 6, 202640001104659-26-001389
Jan 6, 202640001104659-26-001374
Jan 6, 2026SC TO-T/A0001104659-26-001116
Jan 6, 202640001104659-26-001368
Jan 6, 202640001104659-26-001382
Jan 6, 202640001104659-26-001365
Jan 6, 2026S-8 POS0001104659-26-001317
Jan 6, 2026S-8 POS0001104659-26-001314
Jan 6, 202640001104659-26-001385
Jan 6, 202625-NSE0001354457-26-000008
Jan 6, 20268-K0001104659-26-001125
Jan 6, 2026S-8 POS0001104659-26-001310
Jan 6, 2026S-8 POS0001104659-26-001308
Jan 6, 2026S-8 POS0001104659-26-001306
Jan 6, 2026S-8 POS0001104659-26-001298
Jan 6, 2026S-8 POS0001104659-26-001303
Jan 6, 2026S-8 POS0001104659-26-001300