Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000834237-20-009997
Filing Date
2020-07-10
Accepted
2020-07-10 10:39:45
Documents
1

Document Format Files

Seq Description Document Type Size
1 us59045l1061_071020.txt SC 13G/A 11568
  Complete submission text file 0000834237-20-009997.txt   13371
Mailing Address 55 EAST 52ND STREET NEW YORK NY 10055
Business Address 55 EAST 52ND STREET NEW YORK NY 10055 212-810-5300
BlackRock Inc. (Filed by) CIK: 0001364742 (see all company filings)

EIN.: 320174431 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 6211 Security Brokers, Dealers & Flotation Companies

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: SC 13G/A | Act: 34 | File No.: 005-90033 | Film No.: 201022232
SIC: 2834 Pharmaceutical Preparations