Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001104659-25-059463
Filing Date
2025-06-13
Accepted
2025-06-13 17:15:12
Documents
1
Period of Report
2025-06-12

Document Format Files

Seq Description Document Type Size
1 OWNERSHIP DOCUMENT tm2517941-6_4seq1.html 4  
1 OWNERSHIP DOCUMENT tm2517941-6_4seq1.xml 4 4075
  Complete submission text file 0001104659-25-059463.txt   5611
Mailing Address 840 MEMORIAL DRIVE CAMBRIDGE MA 02139
Business Address 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 617-498-0020
Mersana Therapeutics, Inc. (Issuer) CIK: 0001442836 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)

Mailing Address C/O BRIGHT HORIZONS FAMILY SOLUTIONS 2 WELLS AVE NEWTON MA 02459
Business Address
Alleva Lawrence M (Reporting) CIK: 0001553053 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-38129 | Film No.: 251047688