0001104659-20-004769.txt : 20200116 0001104659-20-004769.hdr.sgml : 20200116 20200116163344 ACCESSION NUMBER: 0001104659-20-004769 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20200115 FILED AS OF DATE: 20200116 DATE AS OF CHANGE: 20200116 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Protopapas Anna CENTRAL INDEX KEY: 0001347582 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 20531360 MAIL ADDRESS: STREET 1: MILLENNIUM PHARMACEUTICALS, INC. STREET 2: 40 LANDSDOWNE STREET 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 2020-01-15 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001347582 Protopapas Anna C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 1 1 0 0 President & CEO Stock Option (right to buy) 6.16 2020-01-15 4 A 0 318750 0 A 2030-01-15 Common Stock 318750 318750 D Restricted Stock Units 2020-01-15 4 A 0 70833 0 A Common Stock 70833 70833 D The options vest in equal quarterly installments over the first four years after the vesting commencement date, January 15, 2020. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock upon vesting. The restricted stock units vest in equal annual installments over the first four years after the vesting commencement date, January 15, 2020. /s/ Eva Jack, as Attorney-in-Fact 2020-01-16