SEC Form 4 · accession 0001104659-19-003410
Mersana Therapeutics, Inc. · MRSN
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Wayne Foster
Officer — Vice President of Finance
Period of report
Jan 23, 2019
Accepted (ET)
Jan 25, 2019 · 4:05 pm EST
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001442836
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (right to buy)F1 | $3.51 | Jan 23, 2019 | A | 30,750 | A | — | Jan 23, 2029 | Common Stock | 30,750 | 30,750 | D |
Explanation of responses
- F1The options vest in equal quarterly installments over the first four years after the vesting commencement date, January 23, 2019.