0001104659-18-011695.txt : 20180223
0001104659-18-011695.hdr.sgml : 20180223
20180223160141
ACCESSION NUMBER: 0001104659-18-011695
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20180221
FILED AS OF DATE: 20180223
DATE AS OF CHANGE: 20180223
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: 18636524
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
2018-02-21
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 Scientific Officer
Common Stock
2018-02-21
4
M
0
5911
6.98
A
5911
D
Option to Purchase Common Stock
6.98
2018-02-21
4
M
0
5911
0
D
2018-03-03
Common Stock
5911
0
D
The option vested 25% on February 11, 2009 and in equal quarterly installments thereafter.
/s/ Eva M. Jack , as Attorney-in-Fact
2018-02-23