Filing Details

Accession Number:
0001104659-18-054143
Form Type:
4
Zero Holdings:
No
Publication Time:
2018-08-29 16:24:48
Reporting Period:
2018-08-27
Accepted Time:
2018-08-29 16:24:48
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
1709775 B Timothy Lowinger C/O Mersana Therapeutics, Inc.
840 Memorial Drive
Cambridge MA 02139
Chief Scientific Officer No Yes 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 2018-08-27 3,500 $7.43 15,991 No 4 M Direct
Common Stock Disposition 2018-08-27 3,500 $13.15 12,491 No 4 S Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 M Direct
No 4 S Direct
Reported Derivative Transactions
Sec. Name Sec. Type Acquisiton - Disposition Date Amount Price Amount - 2 Price - 2
Common Stock Option to purchase Common Stock Disposition 2018-08-27 3,500 $0.00 3,500 $7.43
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
1,611 2021-05-11 No 4 M Direct
Footnotes
  1. Transaction made pursuant to Dr. Lowinger's company approved trading plan under Rule 10b5-1.
  2. This price is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.00 to $13.50, inclusive. The reporting person undertakes to provide to Mersana Therapeutics, Inc., any other security holder of Mersana Therapeutics Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
  3. The option vested 25% on May 12, 2012 and in equal quarterly installments thereafter.