MERRIMACK PHARMACEUTICALS INC Insider Trading for May 2014

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General | Insiders | Insider Transactions | Monthly Overview | Weekly Overview

Overview of insider trading in MERRIMACK PHARMACEUTICALS INC for May 2014.

Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
May 29 2014	MACK	MERRIMACK PHARMACE ...	Nielsen Ulrik B.	SVP and CSO	Option Exercise	M	1.71	5,000	8,550	12,023
May 29 2014	MACK	MERRIMACK PHARMACE ...	Nielsen Ulrik B.	SVP and CSO	Option Exercise	M	1.25	100,000	125,000	50,000
May 29 2014	MACK	MERRIMACK PHARMACE ...	Nielsen Ulrik B.	SVP and CSO	Sell	S	8.01	105,000	841,050	176,811	281.8 K to 176.8 K (-37.26 %)
May 29 2014	MACK	MERRIMACK PHARMACE ...	Nielsen Ulrik B.	SVP and CSO	Buy	M	1.71	5,000	8,550	281,811	276.8 K to 281.8 K (+1.81 %)
May 29 2014	MACK	MERRIMACK PHARMACE ...	Nielsen Ulrik B.	SVP and CSO	Buy	M	1.25	100,000	125,000	276,811	176.8 K to 276.8 K (+56.56 %)
May 29 2014	MACK	MERRIMACK PHARMACE ...	Stewart Edward J.	SVP & Pres, Healthc ...	Option Exercise	M	1.25	16,000	20,000	24,000
May 29 2014	MACK	MERRIMACK PHARMACE ...	Stewart Edward J.	SVP & Pres, Healthc ...	Sell	S	8.00	16,000	128,000	21,385	37.4 K to 21.4 K (-42.80 %)
May 29 2014	MACK	MERRIMACK PHARMACE ...	Stewart Edward J.	SVP & Pres, Healthc ...	Buy	M	1.25	16,000	20,000	37,385	21.4 K to 37.4 K (+74.82 %)
May 22 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Buy	P	6.69	4,000	26,760	2,808,571	2.8 M to 2.8 M (+0.14 %)
May 21 2014	MACK	MERRIMACK PHARMACE ...	Quigley James H.	Director	Buy	P	6.58	5,000	32,900	56,500	51.5 K to 56.5 K (+9.71 %)
May 20 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Buy	P	6.71	6,000	40,260	2,804,571	2.8 M to 2.8 M (+0.21 %)
May 20 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Buy	P	6.63	3,400	22,542	2,798,571	2.8 M to 2.8 M (+0.12 %)
May 16 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	P	6.50	5,000	32,500	535,865	530.9 K to 535.9 K (+0.94 %)
May 16 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	P	6.49	10,000	64,900	530,865	520.9 K to 530.9 K (+1.92 %)
May 15 2014	MACK	MERRIMACK PHARMACE ...	Sinskey Anthony J	Director	Option Exercise	A	6.63	30,268	200,677	30,268
May 15 2014	MACK	MERRIMACK PHARMACE ...	Sinskey Anthony J	Director	Buy	P	6.74	5,000	33,700	397,543	392.5 K to 397.5 K (+1.27 %)
May 15 2014	MACK	MERRIMACK PHARMACE ...	Quigley James H.	Director	Option Exercise	A	6.63	30,268	200,677	30,268
May 15 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Option Exercise	A	6.63	30,268	200,677	30,268
May 15 2014	MACK	MERRIMACK PHARMACE ...	Nash Sarah E	Director	Option Exercise	A	6.63	30,268	200,677	30,268
May 15 2014	MACK	MERRIMACK PHARMACE ...	MENDELSOHN JOHN	Director	Option Exercise	A	6.63	30,268	200,677	30,268
May 15 2014	MACK	MERRIMACK PHARMACE ...	Fehr Gordon J.	Director	Option Exercise	A	6.63	30,268	200,677	30,268
May 15 2014	MACK	MERRIMACK PHARMACE ...	Dresser James van B.	Director	Option Exercise	A	6.63	30,268	200,677	30,268
May 15 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Option Exercise	A	6.63	37,834	250,839	37,834
May 14 2014	MACK	MERRIMACK PHARMACE ...	Fehr Gordon J.	Director	Option Exercise	M	1.25	25,000	31,250	0
May 14 2014	MACK	MERRIMACK PHARMACE ...	Fehr Gordon J.	Director	Buy	M	1.25	25,000	31,250	215,143	190.1 K to 215.1 K (+13.15 %)
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Option Exercise	M	2.12	5,000	10,600	0
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Option Exercise	M	1.81	2,500	4,525	0
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Option Exercise	M	2.59	2,500	6,475	0
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Option Exercise	M	1.71	10,000	17,100	0
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	P	6.48	5,000	32,400	520,865	515.9 K to 520.9 K (+0.97 %)
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	M	2.12	5,000	10,600	515,865	510.9 K to 515.9 K (+0.98 %)
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	M	1.81	2,500	4,525	510,865	508.4 K to 510.9 K (+0.49 %)
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	M	2.59	2,500	6,475	508,365	505.9 K to 508.4 K (+0.49 %)
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	M	1.71	10,000	17,100	505,865	495.9 K to 505.9 K (+2.02 %)
May 09 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	P	6.70	5,000	33,500	495,865	490.9 K to 495.9 K (+1.02 %)
May 09 2014	MACK	MERRIMACK PHARMACE ...	Nash Sarah E	Director	Buy	P	6.79	15,000	101,850	955,296	940.3 K to 955.3 K (+1.60 %)
May 09 2014	MACK	MERRIMACK PHARMACE ...	Nash Sarah E	Director	Gift	G	0.00	36,698	0	940,296	977 K to 940.3 K (-3.76 %)
May 08 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Buy	P	6.77	4,400	29,788	2,795,171	2.8 M to 2.8 M (+0.16 %)
May 07 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	P	6.12	5,000	30,600	490,865	485.9 K to 490.9 K (+1.03 %)
May 07 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Buy	P	6.85	7,500	51,375	2,790,771	2.8 M to 2.8 M (+0.27 %)
May 07 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Buy	P	6.92	10,000	69,200	2,783,271	2.8 M to 2.8 M (+0.36 %)
May 07 2014	MACK	MERRIMACK PHARMACE ...	Mulroy Robert J.	President and CEO	Buy	P	6.31	5,000	31,550	946,069	941.1 K to 946.1 K (+0.53 %)
May 06 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Option Exercise	M	1.25	35,000	43,750	0
May 06 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Buy	M	1.25	35,000	43,750	2,773,271	2.7 M to 2.8 M (+1.28 %)
May 06 2014	MACK	MERRIMACK PHARMACE ...	CROCKER GARY L	Director	Buy	P	6.69	10,000	66,900	2,738,271	2.7 M to 2.7 M (+0.37 %)
May 05 2014	MACK	MERRIMACK PHARMACE ...	PORTER MICHAEL E	Director	Buy	P	6.41	15,000	96,150	485,865	470.9 K to 485.9 K (+3.19 %)