0001104659-21-006711.txt : 20210122
0001104659-21-006711.hdr.sgml : 20210122
20210122170036
ACCESSION NUMBER: 0001104659-21-006711
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20210120
FILED AS OF DATE: 20210122
DATE AS OF CHANGE: 20210122
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: 21546597
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
tm213957-1_4seq1.xml
OWNERSHIP DOCUMENT
X0306
4
2021-01-20
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
2021-01-20
4
M
0
1874
3.51
A
33318
D
Common Stock
2021-01-20
4
S
0
1874
21.54
D
31444
D
Common Stock
2021-01-20
4
M
0
2227
6.16
A
33671
D
Common Stock
2021-01-20
4
S
0
2227
21.54
D
31444
D
Common Stock
2021-01-20
4
M
0
1875
3.51
A
33319
D
Common Stock
2021-01-20
4
S
0
1875
21.54
D
31444
D
Common Stock
2021-01-20
4
M
0
2227
6.16
A
33671
D
Common Stock
2021-01-20
4
S
0
2227
21.54
D
31444
D
Stock Option (right to buy)
3.51
2021-01-20
4
M
0
1874
0
D
2029-01-22
Common Stock
1874
25305
D
Stock Option (right to buy)
6.16
2021-01-20
4
M
0
2227
0
D
2030-01-14
Common Stock
2227
99454
D
Stock Option (right to buy)
3.51
2021-01-20
4
M
0
1875
0
D
2029-01-22
Common Stock
1875
23430
D
Stock Option (right to buy)
6.16
2021-01-20
4
M
0
2227
0
D
2030-01-14
Common Stock
2227
97227
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 $21.27 to $21.86, 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 option vests in equal quarterly installments over the first four years after the vesting commencement date, January 23, 2019.
The option vests in equal quarterly installments over the first four years after the vesting commencement date, January 15, 2020.
/s/ Brian DeSchuytner, as Attorney-in-Fact
2021-01-22