Filing Details

Accession Number:
0001104659-23-093468
Form Type:
4
Zero Holdings:
No
Publication Time:
2023-08-18 16:01:45
Reporting Period:
2023-08-16
Accepted Time:
2023-08-18 16:01:45
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
1877233 Tushar Misra C/O Mersana Therapeutics, Inc.
840 Memorial Drive
Cambridge MA 02139
Svp, Chief Manuf. 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 2023-08-16 6,250 $0.00 13,415 No 4 M Direct
Common Stock Disposition 2023-08-17 1,908 $1.18 11,507 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 Restricted Stock Unit Disposition 2023-08-16 6,250 $0.00 6,250 $0.00
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
12,500 No 4 M Direct
Footnotes
  1. Represents shares of common stock received upon vesting of a portion of the restricted stock units ("RSUs") awarded to the Reporting Person on August 16, 2021.
  2. Includes 1,235 shares of common stock acquired on June 15, 2023 by the Reporting Person through the Issuer's employee stock purchase plan.
  3. Represents the sale of shares of common stock to satisfy the Reporting Person's tax withholding obligations in connection with the service-based vesting and settlement of the RSUs pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 10, 2023. The sale was effected through an automatic "sell to cover" transaction that did not represent a discretionary trade by the Reporting Person.
  4. Each RSU represents the contingent right to receive one share of common stock of the Issuer.
  5. The RSUs will vest in equal annual installments over the first four years after the vesting commencement date, August 16, 2021, subject to the Reporting Person's continued service to the Issuer on such vesting date.