SEC Form 4/A · accession 0001179110-15-007941
MERRIMACK PHARMACEUTICALS INC · MACK
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
This is an amendment (Form 4/A). It replaces an earlier filing for the same period.
Reporting owner
Ulrik B. Nielsen
Director
Period of report
Apr 20, 2015
Accepted (ET)
May 18, 2015 · 7:44 am EDT
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 StockF1 | Apr 20, 2015 | M | 25,000 | $2.47 | A | 266,811 | 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)F1,F2 | $2.47 | Apr 20, 2015 | M | 25,000 | D | — | Oct 3, 2016 | Common Stock | 25,000 | 23,175 | D |
Explanation of responses
- F1The exercise price, expiration date and number of derivative securities beneficially owned following the reported transaction were incorrectly reported on the reporting person's Form 4 filed on April 20, 2015.
- F2This option is fully vested.