SEC Form 4 · accession 0001179110-15-002319
MERRIMACK PHARMACEUTICALS INC · MACK
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Peter N Laivins
Officer — SVP of Development
Period of report
Feb 9, 2015
Accepted (ET)
Feb 11, 2015 · 4:19 pm EST
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001274792
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 | $9.08 | Feb 9, 2015 | A | 150,000 | A | — | Feb 8, 2025 | Common Stock | 150,000 | 150,000 | D |
Explanation of responses
- F1This option vests as to 1/12th of the total number of shares on 5/9/15 and an additional 1/12th of the total number of shares at the end of each successive three month period thereafter until 2/9/18.