Filing Details

Accession Number:
0001209191-15-083265
Form Type:
4
Zero Holdings:
No
Publication Time:
2015-12-03 16:53:38
Reporting Period:
2015-12-01
Filing Date:
2015-12-03
Accepted Time:
2015-12-03 16:53:38
SEC Url:
Form 4 Filing
Issuer
Cik Name Symbol Sector (SIC) IRS No
1274792 Merrimack Pharmaceuticals Inc MACK Pharmaceutical Preparations (2834) 000000000
Insiders
Cik Name Reported Address Insider Title Director Officer Large Shareholder Other
1531564 J. Edward Stewart C/O Merrimack Pharmaceuticals, Inc.
One Kendall Square, Suite B7201
Cambridge MA 02139
Head Of Commercial 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 2015-12-01 5,000 $1.81 26,385 No 4 M Direct
Common Stock Disposition 2015-12-01 5,000 $9.33 21,385 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 Stock Option (right to buy) Disposition 2015-12-01 5,000 $0.00 5,000 $1.81
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
12,000 2018-09-22 No 4 M Direct
Footnotes
  1. This transaction was effected pursuant to a Rule 10b5-1 trading plan.
  2. This option is fully vested.