0001209191-17-044142.txt : 20170706 0001209191-17-044142.hdr.sgml : 20170706 20170706171600 ACCESSION NUMBER: 0001209191-17-044142 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20170703 FILED AS OF DATE: 20170706 DATE AS OF CHANGE: 20170706 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 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: NEA 14 GP, LTD CENTRAL INDEX KEY: 0001551532 STATE OF INCORPORATION: E9 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 17953168 BUSINESS ADDRESS: STREET 1: 1954 GREENSPRING DRIVE STREET 2: SUITE 600 CITY: TIMONIUM STATE: MD ZIP: 21093 BUSINESS PHONE: 410-842-4000 MAIL ADDRESS: STREET 1: 1954 GREENSPRING DRIVE STREET 2: SUITE 600 CITY: TIMONIUM STATE: MD ZIP: 21093 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: NEA Partners 14, L.P. CENTRAL INDEX KEY: 0001551531 STATE OF INCORPORATION: E9 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 17953169 BUSINESS ADDRESS: STREET 1: 1954 GREENSPRING DRIVE STREET 2: SUITE 600 CITY: TIMONIUM STATE: MD ZIP: 21093 BUSINESS PHONE: 410-842-4000 MAIL ADDRESS: STREET 1: 1954 GREENSPRING DRIVE STREET 2: SUITE 600 CITY: TIMONIUM STATE: MD ZIP: 21093 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: New Enterprise Associates 14, L.P. CENTRAL INDEX KEY: 0001544328 STATE OF INCORPORATION: E9 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 17953170 BUSINESS ADDRESS: STREET 1: 1954 GREENSPRING DRIVE STREET 2: SUITE 600 CITY: TIMONIUM STATE: MD ZIP: 21093 BUSINESS PHONE: 410-842-4000 MAIL ADDRESS: STREET 1: 1954 GREENSPRING DRIVE STREET 2: SUITE 600 CITY: TIMONIUM STATE: MD ZIP: 21093 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2017-07-03 0 0001442836 Mersana Therapeutics, Inc. MRSN 0001544328 New Enterprise Associates 14, L.P. 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 0001551531 NEA Partners 14, L.P. 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 0001551532 NEA 14 GP, LTD 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 Common Stock 2017-07-03 4 C 0 7140138 A 7140138 D Common Stock 2017-07-03 4 P 0 1000000 15.00 A 8140138 D Series A-1 Preferred Stock 2017-07-03 4 C 0 11931173 0.00 D Common Stock 2647241 0 D Series B-1 Preferred Stock 2017-07-03 4 C 0 18001419 0.00 D Common Stock 4000314 0 D Series C-1 Preferred Stock 2017-07-03 4 C 0 2216626 0.00 D Common Stock 492583 0 D The total represents shares received upon conversion of Series A-1, Series B-1 and Series C-1 Convertible Preferred Stock. Upon closing of the Issuer's initial public offering, each share of Series A-1, Series B-1 and Series C-1 Convertible Preferred Stock automatically converted into .22222 shares of Common Stock without payment of further consideration. There was no expiration date for the Series A-1, Series B-1 or Series C-1 Convertible Preferred Stock. The securities are directly held by New Enterprise Associates 14, L.P. ("NEA 14") and are indirectly held by NEA Partners 14, L.P. ("NEA Partners 14"), the sole general partner of NEA 14, NEA 14 GP, LTD ("NEA 14 LTD"), the sole general partner of NEA Partners 14 and each of the individual directors of NEA 14 LTD (NEA Partners 14, NEA 14 LTD and the individual directors of NEA 14 LTD (collectively, the "Directors") together, the "Indirect Reporting Persons"). The Directors of NEA 14 LTD are M. James Barrett, Peter J. Barris, Forest Baskett, Anthony A. Florence, Jr., Patrick J. Kerins, David M. Mott, Scott D. Sandell, Peter W. Sonsini and Ravi Viswanathan. The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the NEA 14 securities in which the Indirect Reporting Persons have no pecuniary interest. /s/ Sasha Keough, attorney-in-fact 2017-07-06