Filing Details

Accession Number:
0001179110-13-017382
Form Type:
4
Zero Holdings:
No
Publication Time:
2013-12-04 13:20:39
Reporting Period:
2013-12-02
Filing Date:
2013-12-04
Accepted Time:
2013-12-04 13:20:39
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
1345709 E Sarah Nash C/O Merrimack Pharmaceuticals, Inc.
One Kendall Square, Suite B7201
Cambridge MA 02139
Yes No 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 2013-12-02 47,000 $4.17 976,494 No 4 P Direct
Common Stock Acquisiton 2013-12-03 500 $4.35 976,994 No 4 P Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 P Direct
No 4 P Direct
Footnotes
  1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.162 to $4.18, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within such range.