0001104659-18-005845.txt : 20180201 0001104659-18-005845.hdr.sgml : 20180201 20180201160150 ACCESSION NUMBER: 0001104659-18-005845 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180130 FILED AS OF DATE: 20180201 DATE AS OF CHANGE: 20180201 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Foster Wayne CENTRAL INDEX KEY: 0001709769 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 18566873 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 2018-01-30 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001709769 Foster Wayne C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 0 1 0 0 Vice President of Finance Common Stock 2018-01-30 4 M 0 889 1.62 A 57267 D Common Stock 2018-01-30 4 M 0 8055 1.53 A 65322 D Common Stock 2018-01-30 4 M 0 3262 4.10 A 68584 D Common Stock 2018-01-30 4 M 0 2499 6.98 A 71083 D Option to Purchase Common Stock 1.62 2018-01-30 4 M 0 889 0 D 2024-12-15 Common Stock 889 889 D Option to Purchase Common Stock 1.53 2018-01-30 4 M 0 8055 0 D 2025-06-11 Common Stock 8055 12084 D Option to Purchase Common Stock 4.10 2018-01-30 4 M 0 3262 0 D 2026-08-29 Common Stock 3262 8155 D Option to Purchase Common Stock 6.98 2018-01-30 4 M 0 2499 0 D 2027-03-13 Common Stock 2499 10834 D The original option grant for 3,555 option shares vests in equal quarterly installments over the first four years after the vesting commencement date, January 2, 2015. The original option grant for 32,222 option shares vests in equal quarterly installments over the first four years after the vesting commencement date, June 12, 2015. The original option grant for 13,047 option shares vests in equal quarterly installments over the first four years after the vesting commencement date, July 1, 2016. The original option grant for 13,333 option shares vests in equal quarterly installments over the first four years after the vesting commencement date, March 14, 2017. /s/ Eva M. Jack , as Attorney-in-Fact 2018-02-01