Merrimack Pharmaceuticals
Insider trading & Transactions

Last updated:

Transaction Date Insider Security Shares Price per share Total value Source
Sale
NIELSEN ULRIK B. director
 Common Stock 20,000 $10.91 $218,200
Option
NIELSEN ULRIK B. director
 Common Stock 20,000 $1.71 $34,200
Option
NIELSEN ULRIK B. director
 Stock Option (right to buy) 20,000 $1.71 $34,200
Option
MULROY ROBERT J. director, officer: President an..
 Common Stock 150,000 $1.71 $256,500
Option
MULROY ROBERT J. director, officer: President an..
 Stock Option (right to buy) 150,000 $1.71 $256,500
Sale
MULROY ROBERT J. director, officer: President an..
 Common Stock 150,000 $1.71 $256,500
Option
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 6,000 $1.81 $10,860
Sale
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 6,000 $1.81 $10,860
Option
STEWART EDWARD J. officer: Head of Commercial
 Stock Option (right to buy) 6,000 $1.81 $10,860
Option
STEWART EDWARD J. officer: Head of Commercial
 Stock Option (right to buy) 6,000 $1.81 $10,860
Option
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 6,000 $1.81 $10,860
Sale
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 6,000 $1.81 $10,860
Sale
SULLIVAN WILLIAM A. officer: Principal Accounting O..
 Common Stock 15,000 $1.81 $27,150
Option
SULLIVAN WILLIAM A. officer: Principal Accounting O..
 Common Stock 15,000 $1.81 $27,150
Option
SULLIVAN WILLIAM A. officer: Principal Accounting O..
 Stock Option (right to buy) 15,000 $1.81 $27,150
Purchase
LEE VIVIAN S director
 Common Stock 20,000 $10.23 $204,600
Option
SINSKEY ANTHONY J director
 Common Stock 20,000 $1.71 $34,200
Sale
SINSKEY ANTHONY J director
 Common Stock 20,000 $1.71 $34,200
Option
SINSKEY ANTHONY J director
 Stock Option (right to buy) 20,000 $1.71 $34,200
Option
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 6,000 $1.71 $10,260
Option
STEWART EDWARD J. officer: Head of Commercial
 Stock Option (right to buy) 6,000 $1.71 $10,260
Sale
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 6,000 $10.63 $63,780
Option
MULROY ROBERT J. director, officer: President an..
 Common Stock 118,247 $1.4 $165,901
Option
MULROY ROBERT J. director, officer: President an..
 Stock Option (right to buy) 49,163 $1.25 $61,454
Sale
MULROY ROBERT J. director, officer: President an..
 Common Stock 25,000 $9.73 $243,250
Option
MULROY ROBERT J. director, officer: President an..
 Stock Option (right to buy) 175,000 $1.25 $218,750
Option
MULROY ROBERT J. director, officer: President an..
 Common Stock 175,000 $1.25 $218,750
Option
STEWART EDWARD J. officer: Head of Commercial
 Stock Option (right to buy) 3,000 $1.71 $5,130
Option
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 3,000 $1.71 $5,130
Sale
MULROY ROBERT J. director, officer: President an..
 Common Stock 175,000 $1.25 $218,750
Sale
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 3,000 $1.71 $5,130
Purchase
PORTER MICHAEL E director
 Common Stock 8,000 N/A N/A
Purchase
PORTER MICHAEL E director
 Common Stock 5,675 $9 $51,075
Purchase
PORTER MICHAEL E director
 Common Stock 6,234 $8.76 $54,610
Option
STEWART EDWARD J. officer: Head of Commercial
 Stock Option (right to buy) 1,000 $9 $9,000
Sale
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 1,000 $9 $9,000
Option
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 1,000 $9 $9,000
Option
STEWART EDWARD J. officer: Head of Commercial
 Stock Option (right to buy) 4,000 $1.71 $6,840
Option
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 4,000 $1.71 $6,840
Sale
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 4,000 $1.71 $6,840
Purchase
PORTER MICHAEL E director
 Common Stock 5,000 $8.29 $41,450
Purchase
CROCKER GARY L director, officer: See Remarks
 Common Stock 8,630 $8.37 $72,233
Purchase
PORTER MICHAEL E director
 Common Stock 40,000 $8.37 $334,800
Purchase
CROCKER GARY L director, officer: See Remarks
 Common Stock 5,760 $8.62 $49,651
Option
STEWART EDWARD J. officer: Head of Commercial
 Stock Option (right to buy) 3,000 $1.71 $5,130
Sale
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 3,000 $1.71 $5,130
Option
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 3,000 $1.71 $5,130
Sale
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 4,000 $1.71 $6,840
Option
STEWART EDWARD J. officer: Head of Commercial
 Stock Option (right to buy) 4,000 $1.71 $6,840
Option
STEWART EDWARD J. officer: Head of Commercial
 Common Stock 4,000 $1.71 $6,840

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Insider trading

Monitoring trades made by the management members or major shareholders of companies may help create a sharper picture of what is happening inside the companies. Base your decisions on buys or sells of the people involved and do the right thing at the right time.

Who is insider?

Every director or senior officer, as well as any other entity or individual owning more than 10% of the company’s shares on the stock market, is called an insider. Such people or entities are allowed to buy/sell the company's shares under strictly controlled conditions. Key premise here is that none of them can make trades based on non-public information about the company.

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