0001209191-17-042048.txt : 20170627 0001209191-17-042048.hdr.sgml : 20170627 20170627201452 ACCESSION NUMBER: 0001209191-17-042048 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20170627 FILED AS OF DATE: 20170627 DATE AS OF CHANGE: 20170627 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: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 17933541 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: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 17933542 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: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38129 FILM NUMBER: 17933543 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 3 1 doc3.xml FORM 3 SUBMISSION X0206 3 2017-06-27 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 Series A-1 Preferred Stock Common Stock 2647241 D Series B-1 Preferred Stock Common Stock 4000314 D Series C-1 Preferred Stock Common Stock 492583 D Stock Purchase Warrant (right to buy) 0.05 2013-09-27 2023-09-27 Common Stock 70593 D The Series A-1 Convertible Preferred Stock is convertible into shares of common stock at any time at the holder's election and automatically upon the consummation of a public offering of the registrant. There is no expiration date for the Series A-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. The Series B-1 Convertible Preferred Stock is convertible into shares of common stock at any time at the holder's election and automatically upon the consummation of a public offering of the registrant. There is no expiration date for the Series B-1 Convertible Preferred Stock. The Series C-1 Convertible Preferred Stock is convertible into shares of common stock at any time at the holder's election and automatically upon the consummation of a public offering of the registrant. There is no expiration date for the Series C-1 Convertible Preferred Stock. /s/ Sasha Keough, attorney-in-fact 2017-06-27