Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0002052113-25-003092
Filing Date
2025-07-17
Accepted
2025-07-17 19:54:39
Documents
3

Document Format Files

Seq Description Document Type Size
1 primary_doc.html SCHEDULE 13G/A  
1 primary_doc.xml SCHEDULE 13G/A 5644
2 EXHIBIT 24: POWER OF ATTORNEY PowerOfAttorney.txt EX-24 2796
3 EXHIBIT 99: ITEM 7 Item_7.txt EX-99 481
  Complete submission text file 0002052113-25-003092.txt   10841
Mailing Address 840 MEMORIAL DRIVE CAMBRIDGE MA 02139
Business Address 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 617-498-0020
Mersana Therapeutics, Inc. (Subject) CIK: 0001442836 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SCHEDULE 13G/A | Act: 34 | File No.: 005-90033 | Film No.: 251132217
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)

Mailing Address 50 HUDSON YARDS NEW YORK NY 10001
Business Address 50 HUDSON YARDS NEW YORK NY 10001 (212) 810-5800
BlackRock, Inc. (Filed by) CIK: 0002012383 (see all company filings)

EIN.: 991116001 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SCHEDULE 13G/A
SIC: 6211 Security Brokers, Dealers & Flotation Companies
(CF Office: 02 Finance)