SEC Form 4 · accession 0001209191-15-083265
MERRIMACK PHARMACEUTICALS INC · MACK
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Edward J. Stewart
Officer — Head of Commercial
Period of report
Dec 1, 2015
Accepted (ET)
Dec 3, 2015 · 4:53 pm EST
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001274792
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Dec 1, 2015 | M | 5,000 | $1.81 | A | 26,385 | D | |
| Common Stock | Dec 1, 2015 | S | 5,000 | $9.33 | D | 21,385 | D |
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)F2 | $1.81 | Dec 1, 2015 | M | 5,000 | D | — | Sep 22, 2018 | Common Stock | 5,000 | 12,000 | D |
Explanation of responses
- F1This transaction was effected pursuant to a Rule 10b5-1 trading plan.
- F2This option is fully vested.