EXHIBIT 2

SCHEDULE OF TRANSACTIONS EFFECTED DURING THE LAST 60 DAYS

Party Effecting Transaction	Transaction	Date	Quantity	Average Price
Hudson Executive Capital LP	Buy	11/23/2016	23,000	$19.21
Hudson Executive Capital LP	Buy	11/25/2016	10,000	$19.24
Hudson Executive Capital LP	Buy	11/28/2016	21,000	$19.01
Hudson Executive Capital LP	Buy	11/29/2016	19,000	$18.49
Hudson Executive Capital LP	Buy	11/30/2016	18,000	$18.10
Hudson Executive Capital LP	Buy	12/1/2016	5,000	$17.93
Hudson Executive Capital LP	Buy	12/2/2016	4,000	$18.81
Hudson Executive Capital LP	Buy	12/6/2016	18,000	$18.62
Hudson Executive Capital LP	Buy	12/7/2016	18,000	$18.54
Hudson Executive Capital LP	Buy	12/8/2016	8,000	$18.48
Hudson Executive Capital LP	Buy	12/9/2016	10,000	$18.38
Hudson Executive Capital LP	Buy	12/13/2016	8,000	$18.77
Hudson Executive Capital LP	Buy	12/14/2016	11,000	$18.48
Hudson Executive Capital LP	Buy	12/15/2016	7,000	$18.51
Hudson Executive Capital LP	Buy	12/20/2016	1,000	$18.48
Hudson Executive Capital LP	Buy	1/3/2017	8,000	$19.21
Hudson Executive Capital LP	Buy	1/4/2017	24,000	$19.24
Hudson Executive Capital LP	Buy	1/5/2017	20,000	$19.10
Hudson Executive Capital LP	Buy	1/6/2017	65,800	$18.87
Hudson Executive Capital LP	Buy	1/9/2017	19,100	$16.70
Hudson Executive Capital LP	Buy	1/9/2017	81,300	$16.96
Hudson Executive Capital LP	Buy	1/9/2017	70,000	$17.02
Hudson Executive Capital LP	Buy	1/9/2017	69,800	$16.68
Hudson Executive Capital LP	Buy	1/10/2017	12,000	$16.58
Hudson Executive Capital LP	Buy	1/10/2017	6,900	$16.64
Hudson Executive Capital LP	Buy	1/10/2017	11,200	$16.72
Hudson Executive Capital LP	Buy	1/11/2017	18,000	$16.64
Hudson Executive Capital LP	Buy	1/11/2017	5,000	$16.71
Hudson Executive Capital LP	Buy	1/12/2017	67,000	$16.40
Hudson Executive Capital LP	Buy	1/12/2017	19,000	$16.35
Hudson Executive Capital LP	Buy	1/13/2017	75,300	$16.24
Hudson Executive Capital LP	Buy	1/17/2017	15,500	$15.61
Hudson Executive Capital LP	Buy	1/17/2017	16,000	$15.61
Hudson Executive Capital LP	Buy	1/18/2017	39,000	$15.36
Hudson Executive Capital LP	Buy	1/19/2017	43,000	$15.24
Hudson Executive Capital LP	Buy	1/20/2017	49,500	$15.19
Hudson Executive Capital LP	Buy	1/23/2017	34,000	$14.99