0001104659-23-070364.txt : 20230612 0001104659-23-070364.hdr.sgml : 20230612 20230612161920 ACCESSION NUMBER: 0001104659-23-070364 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230608 FILED AS OF DATE: 20230612 DATE AS OF CHANGE: 20230612 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Diaz Allene M. CENTRAL INDEX KEY: 0001773314 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 231008332 MAIL ADDRESS: STREET 1: C/O ALLENA PHARMACEUTIALS, INC. STREET 2: ONEW NEWTON EXECUTIVE PARK SUITE 202 CITY: NEWTON STATE: MA ZIP: 02462 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 tm2318463-6_4seq1.xml OWNERSHIP DOCUMENT X0407 4 2023-06-08 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001773314 Diaz Allene M. C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 1 0 0 0 0 Common Stock 2023-06-08 4 A 0 14467 0 A 14467 D Stock Option (right to buy) 8.64 2023-06-08 4 A 0 18355 0 A 2033-06-07 Common Stock 18355 18355 D Represents a restricted stock unit ("RSU") award. Each RSU represents the contingent right to receive one share of Common Stock of the Issuer. The award will vest in full on the earlier of the first anniversary of the date of grant or the date of the 2024 Annual Meeting of Stockholders of the Issuer, subject to the Reporting Person's continuous service with the Issuer on such vesting date. /s/ Alejandra Carvajal, Attorney-in-Fact 2023-06-12