0001104659-23-042247.txt : 20230405 0001104659-23-042247.hdr.sgml : 20230405 20230405171543 ACCESSION NUMBER: 0001104659-23-042247 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230403 FILED AS OF DATE: 20230405 DATE AS OF CHANGE: 20230405 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Hege Kristen CENTRAL INDEX KEY: 0001299171 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 23803481 MAIL ADDRESS: STREET 1: 500 FORBES BLVD CITY: SOUTH SAN FRANCISCO STATE: CA ZIP: 94070 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Mersana Therapeutics, Inc. CENTRAL INDEX KEY: 0001442836 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] 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 tm2311858-5_4seq1.xml OWNERSHIP DOCUMENT X0407 4 2023-04-03 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001299171 Hege Kristen C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 1 0 0 0 0 Stock Option (right to buy) 4.25 2023-04-03 4 A 0 3451 0 A 2033-04-02 Common Stock 3451 3451 D This stock option was granted in connection with the Reporting Person's election to receive the Reporting Person's quarterly retainer for director services in the form of stock options rather than cash. The options were granted to the Reporting Person pursuant to the Issuer's Amended & Restated Non-Employee Director Compensation Policy in lieu of retainer fees of $11,250 for the quarter ended March 31, 2023. Fully vested as of the date of grant /s/Alejandra Carvajal, Attorney-in-Fact 2023-04-05