0001104659-20-129040.txt : 20201124 0001104659-20-129040.hdr.sgml : 20201124 20201124163132 ACCESSION NUMBER: 0001104659-20-129040 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20201120 FILED AS OF DATE: 20201124 DATE AS OF CHANGE: 20201124 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Lowinger Timothy B CENTRAL INDEX KEY: 0001709775 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 201344568 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 2020-11-20 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001709775 Lowinger Timothy B C/O MERSANA THERAPEUTICS, INC. 840 MEMORIAL DRIVE CAMBRIDGE MA 02139 0 1 0 0 Chief Science & Tech. Officer Common Stock 2020-11-20 4 M 0 1874 3.51 A 1874 D Common Stock 2020-11-20 4 S 0 1874 23.06 D 0 D Common Stock 2020-11-20 4 M 0 2227 6.16 A 2227 D Common Stock 2020-11-20 4 S 0 2227 23.06 D 0 D Common Stock 2020-11-20 4 M 0 1875 3.51 A 1875 D Common Stock 2020-11-20 4 S 0 1875 23.04 D 0 D Common Stock 2020-11-20 4 M 0 2227 6.16 A 2227 D Common Stock 2020-11-20 4 S 0 2227 23.04 D 0 D Stock Option (right to buy) 3.51 2020-11-20 4 M 0 1874 0 D 2029-01-22 Common Stock 1874 32803 D Stock Option (right to buy) 6.16 2020-11-20 4 M 0 2227 0 D 2030-01-14 Common Stock 2227 108362 D Stock Option (right to buy) 3.51 2020-11-20 4 M 0 1875 0 D 2029-01-22 Common Stock 1875 30928 D Stock Option (right to buy) 6.16 2020-11-20 4 M 0 2227 0 D 2030-01-14 Common Stock 2227 106135 D Transaction effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 12, 2020. This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.605 to $23.37, inclusive. The reporting person undertakes to provide to Mersana Therapeutics, Inc., any other security holder of Mersana Therapeutics Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.60 to $23.37, inclusive. The reporting person undertakes to provide to Mersana Therapeutics, Inc., any other security holder of Mersana Therapeutics Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The options vest in equal quarterly installments over the first four years after the vesting commencement date, January 23, 2019. The options vest in equal quarterly installments over the first four years after the vesting commencement date, January 15, 2020. /s/ Brian DeSchuytner, as Attorney-in-Fact 2020-11-24