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Home > Insider Trading > Filing (0001179110-12-017781)

Filing Details

Accession Number:: 0001179110-12-017781
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2012-12-17 17:10:30
Reporting Period:: 2012-12-13

Filing Date:: 2012-12-17
Accepted Time:: 2012-12-17 17:10:30
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
1531959	R. Fazal Khan	C/O Merrimack Pharmaceuticals, Inc. One Kendall Square, Suite B7201 Cambridge MA 02139	Svp Of Manufacturing	No	Yes	No	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2012-12-13	25,000	$1.71	25,000	No	4	M	Direct
Common Stock	Disposition	2012-12-13	25,000	$6.73	0	No	4	S	Direct
Common Stock	Acquisiton	2012-12-17	25,000	$1.71	25,000	No	4	M	Direct
Common Stock	Disposition	2012-12-17	25,000	$6.41	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Show Other Fields >>

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (right to buy)	Disposition	2012-12-13	25,000	$0.00	25,000	$1.71
Common Stock	Stock Option (right to buy)	Disposition	2012-12-17	25,000	$0.00	25,000	$1.71

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
125,000		2016-02-24	No	4	M	Direct
100,000		2016-02-24	No	4	M	Direct

Footnotes

This option is fully vested.