0001104659-22-005548.txt : 20220119
0001104659-22-005548.hdr.sgml : 20220119
20220119180130
ACCESSION NUMBER: 0001104659-22-005548
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20220114
FILED AS OF DATE: 20220119
DATE AS OF CHANGE: 20220119
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: 22539941
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
tm223926-3_4seq1.xml
OWNERSHIP DOCUMENT
X0306
4
2022-01-14
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
Common Stock
2022-01-14
4
M
0
38958
A
322878
D
Restricted Stock Units
2022-01-14
4
M
0
17708
0
D
Common Stock
17708
35416
D
Restricted Stock Units
2022-01-14
4
M
0
21250
0
D
Common Stock
21250
63750
D
Stock Option (right to buy)
6.28
2022-01-14
4
A
0
301450
0
A
2032-01-13
Common Stock
301450
301450
D
Restricted Stock Units
2022-01-14
4
A
0
67000
0
A
Common Stock
67000
67000
D
Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock upon vesting.
50% of the total number of RSUs vested as of January 14, 2022, and thereafter shall vest in equal annual installments over the next two years.
25% of the total number of RSUs vested on January 14, 2022, and thereafter shall vest in equal annual installments over the next three years.
The option vests in equal quarterly installments over the first four years after the vesting commencement date, January 14, 2022.
The restricted stock units vest in equal annual installments over the first four years after the vesting commencement date, January 14, 2022.
/s/ Brian DeSchuytner, as Attorney-in-Fact
2022-01-19