Filing Details

Accession Number:
0001104659-22-005558
Form Type:
4
Zero Holdings:
No
Publication Time:
2022-01-19 18:25:48
Reporting Period:
2022-01-14
Accepted Time:
2022-01-19 18:25:48
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 Science & Tech Off. 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 2022-01-14 15,209 $0.00 135,975 No 4 M Direct
Common Stock Disposition 2022-01-18 4,741 $5.92 131,234 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 Units Disposition 2022-01-14 7,917 $0.00 7,917 $0.00
Common Stock Restricted Stock Units Disposition 2022-01-14 7,292 $0.00 7,292 $0.00
Common Stock Stock Option (right to buy) Acquisiton 2022-01-14 86,250 $0.00 86,250 $6.28
Common Stock Restricted Stock Units Acquisiton 2022-01-14 19,167 $0.00 19,167 $0.00
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
15,833 No 4 M Direct
21,875 No 4 M Direct
86,250 2032-01-13 No 4 A Direct
19,167 No 4 A Direct
Footnotes
  1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock upon vesting.
  2. Represents the number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of the RSUs listed in Table II. These sales weremandated by the Issuer's election under its equity incentive plans to require the reporting person to sell a number of shares of common stock needed to satisfy his tax withholdingobligations and does not represent a discretionary trade by the reporting person.
  3. The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $5.82 to $5.92, inclusive. The reporting personundertakes to provide to Mersana Therapeutics, Inc., any security holder of Mersana Therapeutics, Inc., or the staff of the Securities and Exchange Commission, upon request, fullinformation regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) to this Form 4.
  4. 50% of the total number of RSUs vested as of January 14, 2022, and thereafter shall vest in equal annual installments over the next two years.
  5. 25% of the total number of RSUs vested on January 14, 2022, and thereafter shall vest in equal annual installments over the next three years.
  6. The option vests in equal quarterly installments over the first four years after the vesting commencement date, January 14, 2022.
  7. The restricted stock units vest in equal annual installments over the first four years after the vesting commencement date, January 14, 2022.