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Merrimack Pharmaceuticals, Inc. (MACK)

-NasdaqGM

5.27 May 21, 4:00PM EDT

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Insider TransactionsGet Insider Transactions for:
Net Share Purchase Activity
Insider Purchases - Last 6 Months
 SharesTrans
Purchases128,8005
Sales125,0002
Net Shares Purchased
(Sold)		3,8007
Total Insider Shares Held9.14MN/A
% Net Shares Purchased
(Sold)		0%N/A
Net Institutional Purchases - Prior Qtr to Latest Qtr
 Shares
Net Shares Purchased
(Sold)		5,001,080
% Change in Institutional Shares Held10.12%
Data provided by Thomson Financial
Insider Transactions Reported - Last Two Years
DateInsiderSharesTypeTransactionValue*
May 5, 2013MULROY ROBERT J.Officer50,000DirectOption Exercise at $2.19 per share.109,500
Apr 28, 2013STEWART EDWARD J.Officer5,000DirectOption Exercise at $2.19 per share.10,950
Apr 24, 2013DRESSER JAMES VAN B.Director15,000DirectOption Exercise at $2.19 per share.32,850
Apr 23, 2013NIELSEN ULRIK B.Officer10,483DirectOption Exercise at $2.19 per share.22,957
Apr 23, 2013NIELSEN ULRIK B.Officer10,483DirectAutomatic Sale at $5.40 per share.56,608
Apr 23, 2013SINSKEY ANTHONY JDirector15,000DirectOption Exercise at $2.19 per share.32,850
Apr 14, 2013FEHR GORDON J.Director15,000DirectOption Exercise at $2.19 per share.32,850
Apr 14, 2013FEHR GORDON J.Director15,000DirectAutomatic Sale at $6.04 per share.90,600
Feb 4, 2013NIYIKIZA CLET M.Officer41,507DirectOption Exercise at $2.12 per share.87,994
Dec 17, 2012NIYIKIZA CLET M.Officer100,000DirectOption Exercise at $2.12 per share.211,999
Dec 16, 2012KHAN FAZAL R.Officer25,000DirectOption Exercise at $1.71 per share.42,750
Dec 16, 2012KHAN FAZAL R.Officer25,000DirectSale at $6.41 per share.160,250
Dec 16, 2012PORTER MICHAEL EDirector15,000DirectOption Exercise at $2.19 per share.32,850
Dec 13, 2012MENDELSOHN JOHNDirector5,000DirectPurchase at $6.63 per share.33,150
Dec 12, 2012CROCKER GARY LDirector36,500IndirectPurchase at $6.77 per share.247,105
Dec 12, 2012KHAN FAZAL R.Officer25,000DirectOption Exercise at $1.71 per share.42,750
Dec 12, 2012KHAN FAZAL R.Officer25,000DirectSale at $6.73 per share.168,250
Dec 9, 2012PORTER MICHAEL EDirector10,000DirectPurchase at $6.08 per share.60,800
Dec 2, 2012NIELSEN ULRIK B.Officer75,000DirectSale at $7.37 per share.552,750
Sep 13, 2012CROCKER GARY LDirector64,800IndirectPurchase at $8.32 - $8.34 per share.540,0002
Aug 23, 2012QUIGLEY JAMES H.Director12,500DirectPurchase at $7.50 - $7.55 per share.94,0002
Jul 31, 2012SINSKEY ANTHONY JDirector20,000DirectOption Exercise at $2.19 per share.43,800
Jul 23, 2012DRESSER JAMES VAN B.Director20,000DirectOption Exercise at $2.19 per share.43,800
Jul 15, 2012NIELSEN ULRIK B.Officer4,368DirectOption Exercise at $2.19 per share.9,565
Jul 2, 2012FEHR GORDON J.Director20,000DirectOption Exercise at $2.19 per share.43,800
Jun 14, 2012MULROY ROBERT J.Officer75,000DirectOption Exercise at $2.19 per share.164,250
Apr 26, 2012STEWART EDWARD J.Officer16,385DirectOption Exercise at $2.19 per share.35,883
Apr 24, 2012LOVENBERG WALTER M PHDDirector5,462DirectOption Exercise at $2.19 per share.11,961
Apr 18, 2012SINSKEY ANTHONY JDirector5,462DirectOption Exercise at $2.19 per share.11,961
Apr 16, 2012FEHR GORDON J.Director5,462DirectOption Exercise at $2.19 per share.11,961
Apr 9, 2012DRESSER JAMES VAN B.Director5,462DirectOption Exercise at $2.19 per share.11,961
Apr 2, 2012SINSKEY ANTHONY JDirector7,142DirectPurchase at $7 per share.49,994
Apr 2, 2012DRESSER JAMES VAN B.Director16,012DirectAcquisition (Non Open Market) N/A
Apr 2, 2012FEHR GORDON J.Director1,428DirectPurchase at $7 per share.9,996
Apr 2, 2012PORTER MICHAEL EDirector12,500DirectPurchase at $7 per share.87,500
Apr 2, 2012FEHR GORDON J.Director22,222DirectAcquisition (Non Open Market) N/A
Apr 2, 2012MULROY ROBERT J.Officer61,800IndirectAcquisition (Non Open Market) N/A
Apr 2, 2012GAY ROBERT CDirector318,173IndirectAcquisition (Non Open Market) N/A
Apr 2, 2012GAY ROBERT CDirector318,173DirectAcquisition (Non Open Market) N/A
Apr 2, 2012CROCKER GARY LDirector64,285DirectPurchase at $7 per share.449,995
Apr 2, 2012LOVENBERG WALTER M PHDDirector7,143DirectAcquisition (Non Open Market) N/A
Apr 2, 2012LOVENBERG WALTER M PHDDirector1,428DirectPurchase at $7 per share.9,996
Apr 2, 2012PORTER MICHAEL EDirector177,365DirectAcquisition (Non Open Market) N/A
Apr 2, 2012CROCKER GARY LDirector1,364,674IndirectAcquisition (Non Open Market) N/A
Apr 2, 2012CROCKER GARY LDirector925,359DirectAcquisition (Non Open Market) N/A
Apr 2, 2012CROCKER GARY LDirector75,713IndirectPurchase at $7 per share.529,991
Apr 2, 2012SINSKEY ANTHONY JDirector36,723DirectAcquisition (Non Open Market) N/A
Apr 2, 2012MULROY ROBERT J.Officer69,416DirectAcquisition (Non Open Market) N/A
Apr 2, 2012NASH SARAH EDirector532,012DirectAcquisition (Non Open Market) N/A
Apr 2, 2012NASH SARAH EDirector330,822IndirectAcquisition (Non Open Market) N/A
Apr 2, 2012SINSKEY ANTHONY JDirector18,024IndirectAcquisition (Non Open Market) N/A
Jan 30, 2012NIELSEN ULRIK B.Officer247,443DirectStatement of OwnershipN/A
Jan 30, 2012PORTER MICHAEL EDirector63,000DirectStatement of OwnershipN/A
Jan 30, 2012MULROY ROBERT J.Officer474,603DirectStatement of OwnershipN/A
Jan 30, 2012LOVENBERG WALTER M PHDDirector70,000DirectStatement of OwnershipN/A
Jan 30, 2012NASH SARAH EDirector22,220IndirectStatement of OwnershipN/A
Jan 30, 2012FEHR GORDON J.Director141,031DirectStatement of OwnershipN/A
Jan 30, 2012SINSKEY ANTHONY JDirector81,736IndirectStatement of OwnershipN/A
Jan 30, 2012SINSKEY ANTHONY JDirector237,431DirectStatement of OwnershipN/A
Jan 30, 2012DRESSER JAMES VAN B.Director87,500DirectStatement of OwnershipN/A
Jan 30, 2012NASH SARAH EDirector44,440DirectStatement of OwnershipN/A
Data provided by EDGAR Online
* = Where indicated, some values are estimates.
1= Potential proceeds estimated by the filer.
2= Estimated based on the average of multiple prices reported.
3= Multiple dates reported. Most recent date shown.

Currency in USD.



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