Filing Details

Accession Number:
0000899243-22-018652
Form Type:
4
Zero Holdings:
No
Publication Time:
2022-05-18 18:19:56
Reporting Period:
2022-05-16
Accepted Time:
2022-05-18 18:19:56
SEC Url:
Form 4 Filing
Issuer
Cik Name Symbol Sector (SIC) IRS No
1442836 Mersana Therapeutics Inc. MRSN Pharmaceutical Preparations (2834) 000000000
Insiders
Cik Name Reported Address Insider Title Director Officer Large Shareholder Other
1657434 F. A. Andrew Hack C/O Bain Capital Life Sciences Investors
200 Clarendon Street
Boston MA 02116
Yes No No No
Reported Non-Derivative Transactions
Sec. Name Acquisiton - Disposition Date Amount Price Remaning Holdings Equity Swap Involved Form Type Code Nature of Ownership Explanation
Common Stock Acquisiton 2022-05-16 135,292 $3.10 7,872,692 No 4 P Indirect See footnotes
Common Stock Acquisiton 2022-05-17 3,440 $3.18 7,876,132 No 4 P Indirect See footnotes
Common Stock Acquisiton 2022-05-18 211,268 $3.35 8,087,400 No 4 P Indirect See footnotes
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 P Indirect See footnotes
No 4 P Indirect See footnotes
No 4 P Indirect See footnotes
Footnotes
  1. Represents shares of common stock held directly by Bain Capital Life Sciences Fund II, L.P. ("BCLS II"), BCIP Life Sciences Associates, LP ("BCIPLS") and BCLS II Investco, LP ("BCLS II Investco" and, together with BCLS II and BCIPLS, the "Bain Capital Life Sciences Entities").
  2. Bain Capital Life Sciences Investors, LLC ("BCLSI") (i) is the ultimate general partner of each of BCLS II and BCLS II Investco and (ii) governs the investment strategy and decision-making process with respect to investments held by BCIPLS. Dr. Hack is a Managing Director of BCLSI. As a result, Dr. Hack may be deemed to share voting and dispositive power with respect to the securities held by the Bain Capital Life Sciences Entities. Dr. Hack disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.
  3. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.910 to $3.150, inclusive. The reporting person undertakes to provide to Mersana Therapeutics, Inc., any security holder of Mersana Therapeutics, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnotes (3) through (5) to this Form 4.
  4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.160 to $3.200, inclusive.
  5. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.290 to $3.405, inclusive.