0001104659-24-004545.txt : 20240117 0001104659-24-004545.hdr.sgml : 20240117 20240117171930 ACCESSION NUMBER: 0001104659-24-004545 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240115 FILED AS OF DATE: 20240117 DATE AS OF CHANGE: 20240117 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Huber Martin H. Jr. CENTRAL INDEX KEY: 0001653276 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 24539347 MAIL ADDRESS: STREET 1: C/O TESARO, INC. STREET 2: 1000 WINTER STREET, SUITE 3300 CITY: WALTHAM STATE: MA ZIP: 02451 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Mersana Therapeutics, Inc. CENTRAL INDEX KEY: 0001442836 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 840 MEMORIAL DRIVE CITY: CAMBRIDGE STATE: MA ZIP: 02139 BUSINESS PHONE: 617-498-0020 MAIL ADDRESS: STREET 1: 840 MEMORIAL DRIVE CITY: CAMBRIDGE STATE: MA ZIP: 02139 FORMER COMPANY: FORMER CONFORMED NAME: MERSANA THERAPEUTICS INC DATE OF NAME CHANGE: 20080813 4 1 tm243529-4_4seq1.xml OWNERSHIP DOCUMENT X0508 4 2024-01-15 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001653276 Huber Martin H. Jr. C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 1 1 0 0 President, CEO 0 Stock Option (Right to Buy) 3.02 2024-01-15 4 A 0 199125 0 A 2034-01-14 Common Stock 199125 199125 D Restricted Stock Unit 2024-01-15 4 A 0 44250 0 A Common Stock 44250 44250 D The option shall vest in equal quarterly installments over four years from the date of grant. Each restricted stock unit ("RSU") represents the contingent right to receive one share of common stock of the Issuer. The RSUs shall vest in equal annual installments over four years from the date of grant. /s/ Alejandra Carvajal, Attorney-in-Fact 2023-01-17