0001104659-20-131574.txt : 20201202 0001104659-20-131574.hdr.sgml : 20201202 20201202163055 ACCESSION NUMBER: 0001104659-20-131574 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20201130 FILED AS OF DATE: 20201202 DATE AS OF CHANGE: 20201202 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Yang Arvin CENTRAL INDEX KEY: 0001834321 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 201364147 MAIL ADDRESS: STREET 1: 840 MEMORIAL DRIVE CITY: CAMBRIDGE STATE: MA ZIP: 02139 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 a4.xml 4 X0306 4 2020-11-30 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001834321 Yang Arvin C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 0 1 0 0 Chief Medical Officer Stock Option (right to buy) 25.48 2020-11-30 4 A 0 200000 0 A 2030-11-29 Common Stock 200000 200000 D Restricted stock unit 2020-11-30 4 A 0 37000 0 A 2030-11-29 Common Stock 37000 37000 D The options will vest as to 25% of the shares on the first anniversary of the grant date and in equal quarterly installments over the next three years. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting. The restricted stock units will vest as to 50% of the shares on the first anniversary of the grant date and 50% of the shares on the second anniversary of the grant date. Brian DeSchuytner, as Attorney-in-Fact 2020-12-02