0001104659-21-081609.txt : 20210615
0001104659-21-081609.hdr.sgml : 20210615
20210615180320
ACCESSION NUMBER: 0001104659-21-081609
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20210611
FILED AS OF DATE: 20210615
DATE AS OF CHANGE: 20210615
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Dere Willard H
CENTRAL INDEX KEY: 0001311569
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-38129
FILM NUMBER: 211019917
MAIL ADDRESS:
STREET 1: ONE AMGEN CENTER DRIVE
CITY: THOUSAND OAKS
STATE: CA
ZIP: 91320-1799
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
tm2119714-4_4seq1.xml
OWNERSHIP DOCUMENT
X0306
4
2021-06-11
0
0001442836
Mersana Therapeutics, Inc.
MRSN
0001311569
Dere Willard H
C/O MERSANA THERAPEUTICS, INC.
840 MEMORIAL DRIVE
CAMBRIDGE
MA
02139
1
0
0
0
Stock Option (right to buy)
14.90
2021-06-11
4
A
0
25050
0
A
2031-06-10
Common Stock
25050
25050
D
The option vests in full on the earlier of the first anniversary of the date of grant or the date of the 2022 Annual Meeting of Stockholders of Mersana Therapeutics, Inc.
/s/ Brian DeSchuytner , as Attorney-in-Fact
2021-06-15