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Insider Ownership

Name	Relationship / Title	Current Shares	Trading Activity
bishop john e	Officer	95,682	View
Date	Type	Shares Traded	Price Range USD
12/15/2011	Automatic Sell	426	15.92
11/28/2011	Automatic Sell	284	14.97
11/23/2011	Automatic Sell	309	14.97
11/22/2011	Automatic Sell	2,498	14.88
11/21/2011	Automatic Sell	299	15.01
09/15/2011	Automatic Sell	426	17.38
08/26/2011	Automatic Sell	286	16.08
08/23/2011	Automatic Sell	2,805	15.58 - 16.62
08/19/2011	Automatic Sell	302	15.67
07/07/2011	Automatic Sell	4,987	20.92
06/15/2011	Automatic Sell	429	18.17
05/26/2011	Automatic Sell	284	19.20
05/24/2011	Automatic Sell	307	18.69
05/23/2011	Automatic Sell	2,498	18.27
05/20/2011	Automatic Sell	301	18.55
04/26/2011	Automatic Sell	7,034	18.86
03/28/2011	Acquisition (Non Open Market)	45,000	n/a
03/18/2011	Automatic Sell	2,497	14.88
03/15/2011	Automatic Sell	436	13.94
02/28/2011	Automatic Sell	284	13.85
02/23/2011	Automatic Sell	308	13.26
02/22/2011	Acquisition (Non Open Market)	10,198	n/a
02/22/2011	Automatic Sell	1,185	13.45
12/16/2010	Automatic Sell	426	14.83
12/15/2010	Automatic Sell	426	14.42
11/29/2010	Automatic Sell	285	15.22
11/23/2010	Automatic Sell	309	15.20
11/22/2010	Automatic Sell	2,498	15.32
09/16/2010	Automatic Sell	426	15.10
09/15/2010	Automatic Sell	426	15.51
08/26/2010	Automatic Sell	284	16.57
08/24/2010	Automatic Sell	310	15.22
08/23/2010	Automatic Sell	2,498	16.08
07/23/2010	Automatic Sell	67,950	20.77
06/17/2010	Automatic Sell	2,498	14.88
06/16/2010	Automatic Sell	429	13.69
06/15/2010	Automatic Sell	426	14.00
05/26/2010	Automatic Sell	284	12.45
05/25/2010	Automatic Sell	314	11.56
03/17/2010	Automatic Sell	592	14.59
03/01/2010	Automatic Sell	1,153	14.65
02/23/2010	Automatic Sell	302	15.09
02/22/2010	Automatic Sell	2,497	15.45
02/18/2010	Acquisition (Non Open Market)	10,450	n/a
01/25/2010	Automatic Sell	17,483	14.98
12/15/2009	Automatic Sell	302	11.16
12/14/2009	Automatic Sell	375	11.09
11/23/2009	Automatic Sell	270	10.49
09/15/2009	Automatic Sell	298	10.54
09/14/2009	Automatic Sell	375	10.26
08/24/2009	Automatic Sell	270	9.90
06/15/2009	Automatic Sell	677	9.00 - 9.19
05/22/2009	Automatic Sell	270	8.71
03/20/2009	Automatic Sell	258	9.32
03/16/2009	Automatic Sell	375	8.33
02/25/2009	Acquisition (Non Open Market)	9,975	n/a
02/23/2009	Automatic Sell	1,080	10.93
12/15/2008	Automatic Sell	1,875	10.55 - 10.56
08/16/2008	Automatic Sell	40	12.91
08/06/2008	Automatic Sell	28,500	18.00
06/16/2008	Automatic Sell	335	12.89 - 13.51
04/24/2008	Automatic Sell	9,375	13.00
03/17/2008	Automatic Sell	375	9.07 - 9.31
02/22/2008	Acquisition (Non Open Market)	10,800	n/a
12/17/2007	Automatic Sell	1,500	7.18
12/14/2007	Acquisition (Non Open Market)	15,000	n/a
12/15/2006	Acquisition (Non Open Market)	15,000	n/a
07/25/2006	Option Execute	1,500	8.10
07/25/2006	Automatic Sell	1,500	20.00
02/17/2006	Option Execute	21,875	8.10
02/17/2006	Sell	21,875	24.42 - 24.70
clarke john k	Director	556,333	View
Date	Type	Shares Traded	Price Range USD
07/20/2005	Disposition (Non Open Market)	1,693,450	n/a
07/20/2005	Acquisition (Non Open Market)	7,197	n/a
hutt peter barton	Director	5,365	View
Date	Type	Shares Traded	Price Range USD
12/14/2010	Option Execute	64,000	0.23 - 0.23
12/14/2010	Sell	64,000	14.35
12/10/2010	Sell	62,498	14.67
leicher bruce	Officer	90,106	View
Date	Type	Shares Traded	Price Range USD
11/28/2011	Automatic Sell	135	14.97
11/22/2011	Automatic Sell	501	14.85
11/21/2011	Automatic Sell	193	15.01
08/26/2011	Automatic Sell	136	16.07
08/22/2011	Automatic Sell	500	16.62
08/19/2011	Automatic Sell	194	15.67
05/26/2011	Automatic Sell	135	19.20
05/20/2011	Automatic Sell	695	18.55
03/28/2011	Acquisition (Non Open Market)	45,000	n/a
02/28/2011	Automatic Sell	135	13.85
02/23/2011	Automatic Sell	501	13.26
02/22/2011	Acquisition (Non Open Market)	9,271	n/a
02/22/2011	Automatic Sell	761	13.45
11/29/2010	Automatic Sell	135	15.22
11/22/2010	Automatic Sell	501	15.45
08/26/2010	Automatic Sell	135	16.57
08/20/2010	Automatic Sell	501	15.76
05/26/2010	Automatic Sell	135	12.45
05/20/2010	Automatic Sell	509	12.66
03/01/2010	Automatic Sell	543	14.65
02/23/2010	Automatic Sell	508	15.09
02/18/2010	Acquisition (Non Open Market)	9,500	n/a
11/19/2009	Automatic Sell	1,562	11.29
08/19/2009	Automatic Sell	1,997	9.97
02/25/2009	Acquisition (Non Open Market)	6,650	n/a
08/19/2008	Acquisition (Non Open Market)	25,000	n/a
novartis ag	Beneficial Owner (10% or more)	4,708,679	View
Date	Type	Shares Traded	Price Range USD
07/25/2006	Statement of Ownership	0	n/a
polaris venture management co iii llc	Beneficial Owner (10% or more)	1,844,246	View
Date	Type	Shares Traded	Price Range USD
06/27/2005	Disposition (Non Open Market)	3,000,000	n/a
06/27/2005	Acquisition (Non Open Market)	1,184	n/a
roach james m.	Officer	69,809	View
Date	Type	Shares Traded	Price Range USD
11/28/2011	Automatic Sell	192	14.97
11/21/2011	Automatic Sell	193	15.01
08/26/2011	Automatic Sell	193	16.07
08/19/2011	Automatic Sell	194	15.67
05/26/2011	Automatic Sell	191	19.20
05/20/2011	Automatic Sell	194	18.55
03/28/2011	Acquisition (Non Open Market)	45,000	n/a
02/28/2011	Automatic Sell	192	13.85
02/22/2011	Acquisition (Non Open Market)	9,271	n/a
02/22/2011	Automatic Sell	761	13.45
11/29/2010	Automatic Sell	192	15.22
08/26/2010	Automatic Sell	192	16.57
05/26/2010	Automatic Sell	192	12.45
02/26/2010	Automatic Sell	776	14.65
02/18/2010	Acquisition (Non Open Market)	9,500	n/a
02/25/2009	Acquisition (Non Open Market)	9,500	n/a
shapiro bennett m	Director	7,000	View
Date	Type	Shares Traded	Price Range USD
01/11/2012	Automatic Sell	2,000	19.39
12/12/2011	Automatic Sell	2,000	15.41
11/10/2011	Automatic Sell	2,000	14.63
10/11/2011	Automatic Sell	2,000	12.33
09/12/2011	Automatic Sell	2,000	16.10
08/10/2011	Automatic Sell	800	16.07
07/11/2011	Automatic Sell	1,200	20.53
06/10/2011	Automatic Sell	2,000	19.03
05/10/2011	Automatic Sell	2,000	19.19
04/11/2011	Automatic Sell	2,000	15.29
03/10/2011	Automatic Sell	2,000	13.99
02/10/2011	Automatic Sell	2,000	13.58
08/25/2008	Automatic Sell	5,628	15.00
08/22/2008	Automatic Sell	4,372	15.00
01/17/2007	Automatic Sell	9,000	15.00
01/17/2007	Automatic Sell	9,000	17.15 - 17.49
12/18/2006	Automatic Sell	9,000	16.60 - 16.95
11/16/2006	Automatic Sell	9,000	16.60 - 16.73
10/18/2006	Automatic Sell	9,000	15.00 - 15.46
09/20/2006	Automatic Sell	9,000	15.00
08/18/2006	Automatic Sell	9,000	15.00 - 15.16
shea richard p	Officer	90,175	View
Date	Type	Shares Traded	Price Range USD
11/28/2011	Automatic Sell	173	14.97
11/23/2011	Automatic Sell	219	14.97
11/21/2011	Automatic Sell	193	15.01
08/26/2011	Automatic Sell	174	16.07
08/23/2011	Automatic Sell	218	15.58
08/19/2011	Automatic Sell	194	15.67
08/16/2011	Automatic Sell	304	17.11
05/26/2011	Automatic Sell	172	19.20
05/24/2011	Automatic Sell	217	18.69
05/20/2011	Automatic Sell	194	18.55
05/17/2011	Automatic Sell	301	18.78
03/28/2011	Acquisition (Non Open Market)	45,000	n/a
02/28/2011	Automatic Sell	173	13.85
02/23/2011	Automatic Sell	218	13.26
02/22/2011	Acquisition (Non Open Market)	9,271	n/a
02/22/2011	Automatic Sell	761	13.45
02/16/2011	Automatic Sell	301	13.62
11/29/2010	Automatic Sell	173	15.22
11/23/2010	Automatic Sell	218	15.20
11/16/2010	Automatic Sell	303	15.82
08/26/2010	Automatic Sell	172	16.57
08/24/2010	Automatic Sell	219	15.22
08/17/2010	Automatic Sell	301	16.54
05/26/2010	Automatic Sell	173	12.45
05/25/2010	Automatic Sell	222	11.56
05/18/2010	Automatic Sell	302	13.41
03/01/2010	Automatic Sell	698	14.65
02/23/2010	Automatic Sell	218	15.09
02/18/2010	Acquisition (Non Open Market)	9,500	n/a
02/17/2010	Automatic Sell	336	15.19
11/24/2009	Automatic Sell	218	10.53
11/16/2009	Automatic Sell	303	10.28
08/24/2009	Automatic Sell	218	9.82
08/17/2009	Automatic Sell	302	9.69
05/22/2009	Automatic Sell	215	8.52
05/15/2009	Automatic Sell	302	9.40
02/25/2009	Acquisition (Non Open Market)	8,550	n/a
02/23/2009	Automatic Sell	858	10.56
02/17/2009	Automatic Sell	360	11.76
11/19/2008	Automatic Sell	371	7.77
02/22/2008	Acquisition (Non Open Market)	10,800	n/a
08/15/2007	Acquisition (Non Open Market)	15,000	n/a
stoner elizabeth	Director	7,880	View
Date	Type	Shares Traded	Price Range USD
09/01/2011	Automatic Sell	1,320	16.94
06/01/2011	Automatic Sell	900	20.11
03/01/2011	Automatic Sell	1,560	13.50
02/16/2011	Automatic Sell	6,000	13.55
02/15/2011	Automatic Sell	2,340	13.01
sulat james r	Director	10,000	View
Date	Type	Shares Traded	Price Range USD
12/19/2011	Option Execute	3,000	14.09
02/14/2011	Option Execute	7,000	12.34
venkataraman ganesh	Officer	401,906	View
Date	Type	Shares Traded	Price Range USD
11/28/2011	Automatic Sell	182	14.97
11/23/2011	Automatic Sell	103	14.97
11/21/2011	Automatic Sell	212	15.01
08/26/2011	Automatic Sell	183	16.07
08/23/2011	Automatic Sell	102	15.58
08/19/2011	Automatic Sell	213	15.67
07/05/2011	Automatic Sell	15,900	20.35
06/08/2011	Automatic Sell	9,100	20.36
05/26/2011	Automatic Sell	182	19.20
05/24/2011	Automatic Sell	102	18.69
05/20/2011	Automatic Sell	213	18.55
03/28/2011	Acquisition (Non Open Market)	45,000	n/a
02/28/2011	Automatic Sell	182	13.85
02/23/2011	Automatic Sell	102	13.26
02/22/2011	Acquisition (Non Open Market)	10,198	n/a
02/22/2011	Automatic Sell	837	13.45
11/29/2010	Automatic Sell	182	15.22
11/23/2010	Automatic Sell	102	15.20
09/17/2010	Automatic Sell	3,900	15.02
09/16/2010	Automatic Sell	11,100	15.07
08/26/2010	Automatic Sell	182	16.57
08/24/2010	Automatic Sell	103	15.22
08/06/2010	Automatic Sell	22,300	17.69
08/05/2010	Automatic Sell	2,584	17.67
08/03/2010	Automatic Sell	15,116	22.07
07/26/2010	Automatic Sell	20,000	24.25
07/23/2010	Automatic Sell	40,000	21.38
05/26/2010	Automatic Sell	182	12.45
05/25/2010	Automatic Sell	104	11.56
03/12/2010	Option Execute	32,000	0.23
03/09/2010	Automatic Sell	32,462	14.83
03/01/2010	Automatic Sell	737	14.65
02/23/2010	Automatic Sell	102	15.09
02/18/2010	Acquisition (Non Open Market)	10,450	15.37
11/24/2009	Automatic Sell	103	10.53
08/24/2009	Automatic Sell	102	9.82
05/22/2009	Sell	100	8.52
02/25/2009	Acquisition (Non Open Market)	9,025	n/a
02/23/2009	Sell	397	10.56
01/16/2009	Automatic Sell	7,489	12.00
01/06/2009	Automatic Sell	2,006	12.00
12/17/2008	Automatic Sell	10,505	12.02
04/15/2008	Acquisition (Non Open Market)	19,000	n/a
02/22/2008	Acquisition (Non Open Market)	5,000	n/a
10/03/2006	Automatic Sell	10,000	13.12 - 13.35
09/13/2006	Sell	33,950	15.00 - 15.42
09/12/2006	Sell	49,771	15.00 - 15.09
09/11/2006	Sell	16,279	15.00 - 15.11
09/01/2006	Automatic Sell	10,000	15.90 - 16.00
08/03/2006	Automatic Sell	2,500	16.93
08/02/2006	Automatic Sell	5,000	17.00 - 17.16
08/01/2006	Automatic Sell	2,500	16.97 - 17.10
07/06/2006	Automatic Sell	10,000	12.65 - 12.87
06/05/2006	Automatic Sell	4,000	13.70
06/01/2006	Automatic Sell	6,000	14.06 - 14.15
05/03/2006	Automatic Sell	30,000	15.60 - 16.08
03/07/2006	Acquisition (Non Open Market)	200,000	n/a
02/22/2006	Disposition (Non Open Market)	67,500	n/a
12/01/2005	Automatic Sell	6,000	21.34 - 22.34
11/01/2005	Automatic Sell	6,000	21.31 - 21.96
10/03/2005	Automatic Sell	6,000	28.70 - 28.86
09/01/2005	Automatic Sell	6,000	25.24 - 25.41
08/01/2005	Automatic Sell	6,000	25.30 - 25.54
07/01/2005	Automatic Sell	6,000	19.61
06/16/2005	Automatic Sell	10,500	17.00
06/01/2005	Automatic Sell	6,000	11.36 - 11.58
05/26/2005	Automatic Sell	10,000	11.00
05/09/2005	Automatic Sell	10,500	9.50 - 9.59
05/04/2005	Automatic Sell	9,600	8.00 - 8.54
05/03/2005	Automatic Sell	4,900	7.66 - 8.07
05/02/2005	Automatic Sell	1,500	7.56 - 7.83
wheeler craig a	Officer	467,579	View
Date	Type	Shares Traded	Price Range USD
11/28/2011	Automatic Sell	2,110	14.90
11/23/2011	Automatic Sell	2,110	14.84
11/21/2011	Automatic Sell	2,110	14.87
08/26/2011	Automatic Sell	2,109	16.28
08/23/2011	Automatic Sell	2,109	15.50
08/19/2011	Automatic Sell	2,109	15.97
07/05/2011	Automatic Sell	6,700	20.15
06/08/2011	Automatic Sell	4,600	20.23
06/08/2011	Automatic Sell	9,600	20.17
05/31/2011	Automatic Sell	5,400	20.16
05/31/2011	Automatic Sell	6,700	20.16
05/26/2011	Automatic Sell	2,110	19.20
05/24/2011	Automatic Sell	2,110	18.69
05/19/2011	Automatic Sell	2,109	18.42
03/28/2011	Acquisition (Non Open Market)	147,500	n/a
02/28/2011	Automatic Sell	2,109	13.82
02/23/2011	Automatic Sell	2,109	13.28
02/22/2011	Acquisition (Non Open Market)	75,000	n/a
02/22/2011	Automatic Sell	8,437	13.38
11/29/2010	Automatic Sell	2,110	15.32
11/23/2010	Automatic Sell	2,110	15.07
08/27/2010	Automatic Sell	2,109	15.85
08/24/2010	Automatic Sell	47,109	15.20 - 15.41
08/09/2010	Automatic Sell	16,000	17.85
08/06/2010	Automatic Sell	20,922	17.74
08/05/2010	Automatic Sell	3,700	17.67
08/04/2010	Automatic Sell	12,445	20.41
08/03/2010	Automatic Sell	25,683	22.06
06/11/2010	Acquisition (Non Open Market)	36,093	n/a
06/11/2010	Disposition (Non Open Market)	36,093	n/a
05/26/2010	Automatic Sell	2,109	12.62
05/25/2010	Automatic Sell	2,110	11.92
02/26/2010	Automatic Sell	8,438	14.67
02/23/2010	Automatic Sell	2,109	15.05
02/18/2010	Acquisition (Non Open Market)	75,000	n/a
11/24/2009	Automatic Sell	2,109	10.53
08/25/2009	Automatic Sell	2,109	9.82
05/26/2009	Automatic Sell	2,109	8.41
02/25/2009	Acquisition (Non Open Market)	75,000	n/a
02/24/2009	Automatic Sell	8,438	10.61
02/22/2008	Acquisition (Non Open Market)	75,000	n/a
01/17/2007	Acquisition (Non Open Market)	175,000	n/a
08/22/2006	Acquisition (Non Open Market)	100,000	n/a

Stock transaction information provided by EDGAR Online. Momenta Pharmaceuticals, Inc. makes no representation or warranty with respect to any of the information contained herein, takes no responsibility for supplementing, updating or correcting any such information and shall have no liability with respect to any such information. This listing does not include derivatives, such as stock option grants or shares purchased through an employee stock purchase plan. For recent transactions, including derivative transactions, see our Section 16 SEC filings page.