Exhibit A

Relational Investors LLC	Sale	3,338	12/29/2014	$	22.54	Open Market
Relational Investors LLC	Sale	19,288	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	16,776	12/29/2014	$	22.54	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	6,206	12/29/2014	$	22.54	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	7,267	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	119,551	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	5,959	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	25,528	12/29/2014	$	22.54	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	59,679	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	9,721	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	2,236	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	25,309	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	6,396	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	5,595	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	10,543	12/29/2014	$	22.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	27,970	12/29/2014	$	22.61	Open Market
Relational Investors LLC	Sale	7,662	12/29/2014	$	22.54	Open Market
Relational Investors LLC	Sale	7,644	12/29/2014	$	22.54	Open Market
Relational Investors LLC	Sale	950	12/29/2014	$	22.61	Open Market
Relational Investors LLC	Sale	76,293	12/29/2014	$	22.61	Open Market
Relational Investors LLC	Sale	7,783	12/29/2014	$	22.61	Open Market
Relational Investors LLC	Sale	1,790	12/29/2014	$	22.61	Open Market
Relational Investors LLC	Sale	1,611	12/29/2014	$	22.61	Open Market
Relational Coast Partners, L.P.	Sale	916	12/29/2014	$	22.54	Open Market
Relational Coast Partners, L.P.	Sale	1,441	12/29/2014	$	22.54	Open Market
Relational Coast Partners, L.P.	Sale	288	12/29/2014	$	22.54	Open Market
Relational Coast Partners, L.P.	Sale	12,511	12/29/2014	$	22.61	Open Market
Relational Coast Partners, L.P.	Sale	1,305	12/29/2014	$	22.61	Open Market
Relational Coast Partners, L.P.	Sale	300	12/29/2014	$	22.61	Open Market
Relational Coast Partners, L.P.	Sale	1,169	12/29/2014	$	22.61	Open Market
Relational Fund Partners, L.P.	Sale	262	12/29/2014	$	22.54	Open Market
Relational Fund Partners, L.P.	Sale	17	12/29/2014	$	22.61	Open Market
Relational Fund Partners, L.P.	Sale	163	12/29/2014	$	22.61	Open Market
Relational Fund Partners, L.P.	Sale	1,338	12/29/2014	$	22.61	Open Market
RH Fund 1, L.P.	Sale	870	12/29/2014	$	22.54	Open Market
RH Fund 1, L.P.	Sale	1,287	12/29/2014	$	22.54	Open Market
RH Fund 1, L.P.	Sale	195	12/29/2014	$	22.54	Open Market
RH Fund 1, L.P.	Sale	11,238	12/29/2014	$	22.61	Open Market
RH Fund 1, L.P.	Sale	1,166	12/29/2014	$	22.61	Open Market
RH Fund 1, L.P.	Sale	268	12/29/2014	$	22.61	Open Market
RH Fund 1, L.P.	Sale	919	12/29/2014	$	22.61	Open Market
Relational Investors XV, L.P.	Sale	1,093	12/29/2014	$	22.54	Open Market
Relational Investors XV, L.P.	Sale	1,526	12/29/2014	$	22.54	Open Market
Relational Investors XV, L.P.	Sale	156	12/29/2014	$	22.54	Open Market
Relational Investors XV, L.P.	Sale	13,397	12/29/2014	$	22.61	Open Market
Relational Investors XV, L.P.	Sale	1,382	12/29/2014	$	22.61	Open Market
Relational Investors XV, L.P.	Sale	318	12/29/2014	$	22.61	Open Market
Relational Investors XV, L.P.	Sale	937	12/29/2014	$	22.61	Open Market
Relational Investors XVI, L.P.	Sale	1,217	12/29/2014	$	22.54	Open Market
Relational Investors XVI, L.P.	Sale	222	12/29/2014	$	22.54	Open Market
Relational Investors XVI, L.P.	Sale	639	12/29/2014	$	22.61	Open Market
Relational Investors XVI, L.P.	Sale	7,648	12/29/2014	$	22.61	Open Market
Relational Investors XVI, L.P.	Sale	31	12/29/2014	$	22.61	Open Market
Relational Investors XX, L.P.	Sale	1,022	12/29/2014	$	22.54	Open Market
Relational Investors XX, L.P.	Sale	1,389	12/29/2014	$	22.54	Open Market
Relational Investors XX, L.P.	Sale	108	12/29/2014	$	22.54	Open Market
Relational Investors XX, L.P.	Sale	12,224	12/29/2014	$	22.61	Open Market
Relational Investors XX, L.P.	Sale	1,258	12/29/2014	$	22.61	Open Market
Relational Investors XX, L.P.	Sale	289	12/29/2014	$	22.61	Open Market
Relational Investors XX, L.P.	Sale	786	12/29/2014	$	22.61	Open Market
Relational Investors XXIII, L.P.	Sale	1,392	12/29/2014	$	22.54	Open Market
Relational Investors XXIII, L.P.	Sale	1,968	12/29/2014	$	22.54	Open Market
Relational Investors XXIII, L.P.	Sale	222	12/29/2014	$	22.54	Open Market
Relational Investors XXIII, L.P.	Sale	17,253	12/29/2014	$	22.61	Open Market
Relational Investors XXIII, L.P.	Sale	1,782	12/29/2014	$	22.61	Open Market
Relational Investors XXIII, L.P.	Sale	410	12/29/2014	$	22.61	Open Market
Relational Investors XXIII, L.P.	Sale	1,250	12/29/2014	$	22.61	Open Market
Relational Investors IX, L.P.	Sale	2,647	12/29/2014	$	22.54	Open Market
Relational Investors IX, L.P.	Sale	715	12/29/2014	$	22.54	Open Market
Relational Investors IX, L.P.	Sale	679	12/29/2014	$	22.61	Open Market
Relational Investors IX, L.P.	Sale	597	12/29/2014	$	22.61	Open Market
Relational Investors IX, L.P.	Sale	12,373	12/29/2014	$	22.61	Open Market
Relational Investors IX, L.P.	Sale	5,303	12/29/2014	$	22.61	Open Market
Relational Investors IX, L.P.	Sale	472	12/29/2014	$	22.61	Open Market

Relational Investors LLC	Sale	10,517	12/29/2014	$	22.54	Open Market
Relational Investors LLC	Sale	60,764	12/29/2014	$	22.61	Open Market
Relational Investors XXIV, L.P.	Sale	282	12/29/2014	$	22.54	Open Market
Relational Investors XXIV, L.P.	Sale	111	12/29/2014	$	22.54	Open Market
Relational Investors XXIV, L.P.	Sale	714	12/29/2014	$	22.61	Open Market
Relational Investors XXIV, L.P.	Sale	318	12/29/2014	$	22.61	Open Market
Relational Investors XXIV, L.P.	Sale	1,241	12/29/2014	$	22.61	Open Market
Relational Investors LLC	Sale	6,974	12/30/2014	$	22.43	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	6,245	12/30/2014	$	22.43	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	2,811	12/30/2014	$	22.43	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	31,760	12/30/2014	$	22.43	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	7,187	12/30/2014	$	22.43	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	29,214	12/30/2014	$	22.43	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	5,545	12/30/2014	$	22.43	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	18,534	12/30/2014	$	22.43	Open Market
Relational Investors LLC	Sale	18,654	12/30/2014	$	22.43	Open Market
Relational Investors LLC	Sale	5,122	12/30/2014	$	22.43	Open Market
Relational Investors LLC	Sale	4,480	12/30/2014	$	22.43	Open Market
Relational Investors LLC	Sale	3,714	12/30/2014	$	22.43	Open Market
Relational Coast Partners, L.P.	Sale	2,230	12/30/2014	$	22.43	Open Market
Relational Coast Partners, L.P.	Sale	859	12/30/2014	$	22.43	Open Market
Relational Coast Partners, L.P.	Sale	751	12/30/2014	$	22.43	Open Market
Relational Coast Partners, L.P.	Sale	1,416	12/30/2014	$	22.43	Open Market
Relational Coast Partners, L.P.	Sale	271	12/30/2014	$	22.43	Open Market
Relational Fund Partners, L.P.	Sale	115	12/30/2014	$	22.43	Open Market
Relational Fund Partners, L.P.	Sale	147	12/30/2014	$	22.43	Open Market
Relational Fund Partners, L.P.	Sale	33	12/30/2014	$	22.43	Open Market
Relational Fund Partners, L.P.	Sale	255	12/30/2014	$	22.43	Open Market
RH Fund 1, L.P.	Sale	2,117	12/30/2014	$	22.43	Open Market
RH Fund 1, L.P.	Sale	767	12/30/2014	$	22.43	Open Market
RH Fund 1, L.P.	Sale	671	12/30/2014	$	22.43	Open Market
RH Fund 1, L.P.	Sale	1,265	12/30/2014	$	22.43	Open Market
RH Fund 1, L.P.	Sale	94	12/30/2014	$	22.43	Open Market
Relational Investors XV, L.P.	Sale	2,663	12/30/2014	$	22.43	Open Market
Relational Investors XV, L.P.	Sale	909	12/30/2014	$	22.43	Open Market
Relational Investors XV, L.P.	Sale	796	12/30/2014	$	22.43	Open Market
Relational Investors XV, L.P.	Sale	1,430	12/30/2014	$	22.43	Open Market
Relational Investors XVI, L.P.	Sale	749	12/30/2014	$	22.43	Open Market
Relational Investors XVI, L.P.	Sale	179	12/30/2014	$	22.43	Open Market
Relational Investors XVI, L.P.	Sale	2,031	12/30/2014	$	22.43	Open Market
Relational Investors XVI, L.P.	Sale	50	12/30/2014	$	22.43	Open Market
Relational Investors XX, L.P.	Sale	2,489	12/30/2014	$	22.43	Open Market
Relational Investors XX, L.P.	Sale	827	12/30/2014	$	22.43	Open Market
Relational Investors XX, L.P.	Sale	724	12/30/2014	$	22.43	Open Market
Relational Investors XX, L.P.	Sale	1,224	12/30/2014	$	22.43	Open Market
Relational Investors XXIII, L.P.	Sale	3,391	12/30/2014	$	22.43	Open Market
Relational Investors XXIII, L.P.	Sale	1,173	12/30/2014	$	22.43	Open Market
Relational Investors XXIII, L.P.	Sale	1,026	12/30/2014	$	22.43	Open Market
Relational Investors XXIII, L.P.	Sale	1,892	12/30/2014	$	22.43	Open Market
Relational Investors IX, L.P.	Sale	790	12/30/2014	$	22.43	Open Market
Relational Investors IX, L.P.	Sale	541	12/30/2014	$	22.43	Open Market
Relational Investors IX, L.P.	Sale	290	12/30/2014	$	22.43	Open Market
Relational Investors IX, L.P.	Sale	124	12/30/2014	$	22.43	Open Market
Relational Investors IX, L.P.	Sale	4,695	12/30/2014	$	22.43	Open Market
Relational Investors IX, L.P.	Sale	583	12/30/2014	$	22.43	Open Market
Relational Investors LLC	Sale	21,970	12/30/2014	$	22.43	Open Market
Relational Investors XXIV, L.P.	Sale	823	12/30/2014	$	22.43	Open Market
Relational Investors LLC	Sale	10,636	1/30/2015	$	19.43	Open Market
Relational Investors LLC	Sale	10,034	1/30/2015	$	19.45	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	849	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	7,026	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	13,234	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	52,110	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	19,633	1/30/2015	$	19.45	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	6,966	1/30/2015	$	19.45	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	42,473	1/30/2015	$	19.45	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	27,203	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	14,191	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	10,545	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	4,470	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	24,904	1/30/2015	$	19.43	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	76,710	1/30/2015	$	19.45	Open Market
Relational Investors LLC	Sale	4,728	1/30/2015	$	19.43	Open Market
Relational Investors LLC	Sale	44,035	1/30/2015	$	19.43	Open Market
Relational Investors LLC	Sale	1,752	1/30/2015	$	19.45	Open Market

Relational Investors LLC	Sale	4,440	1/30/2015	$	19.45	Open Market
Relational Investors LLC	Sale	36,621	1/30/2015	$	19.45	Open Market
Relational Investors LLC	Sale	3,188	1/30/2015	$	19.45	Open Market
Relational Coast Partners, L.P.	Sale	7,411	1/30/2015	$	19.43	Open Market
Relational Coast Partners, L.P.	Sale	745	1/30/2015	$	19.43	Open Market
Relational Coast Partners, L.P.	Sale	273	1/30/2015	$	19.43	Open Market
Relational Coast Partners, L.P.	Sale	5,871	1/30/2015	$	19.45	Open Market
Relational Coast Partners, L.P.	Sale	1,906	1/30/2015	$	19.45	Open Market
Relational Coast Partners, L.P.	Sale	174	1/30/2015	$	19.45	Open Market
Relational Fund Partners, L.P.	Sale	131	1/30/2015	$	19.43	Open Market
Relational Fund Partners, L.P.	Sale	95	1/30/2015	$	19.43	Open Market
Relational Fund Partners, L.P.	Sale	84	1/30/2015	$	19.43	Open Market
Relational Fund Partners, L.P.	Sale	160	1/30/2015	$	19.43	Open Market
Relational Fund Partners, L.P.	Sale	367	1/30/2015	$	19.43	Open Market
Relational Fund Partners, L.P.	Sale	506	1/30/2015	$	19.45	Open Market
Relational Fund Partners, L.P.	Sale	83	1/30/2015	$	19.45	Open Market
Relational Fund Partners, L.P.	Sale	200	1/30/2015	$	19.45	Open Market
RH Fund 1, L.P.	Sale	6,768	1/30/2015	$	19.43	Open Market
RH Fund 1, L.P.	Sale	665	1/30/2015	$	19.43	Open Market
RH Fund 1, L.P.	Sale	61	1/30/2015	$	19.43	Open Market
RH Fund 1, L.P.	Sale	5,427	1/30/2015	$	19.45	Open Market
RH Fund 1, L.P.	Sale	1,643	1/30/2015	$	19.45	Open Market
Relational Investors XV, L.P.	Sale	69	1/30/2015	$	19.43	Open Market
Relational Investors XV, L.P.	Sale	8,134	1/30/2015	$	19.43	Open Market
Relational Investors XV, L.P.	Sale	639	1/30/2015	$	19.43	Open Market
Relational Investors XV, L.P.	Sale	149	1/30/2015	$	19.45	Open Market
Relational Investors XV, L.P.	Sale	6,506	1/30/2015	$	19.45	Open Market
Relational Investors XV, L.P.	Sale	1,686	1/30/2015	$	19.45	Open Market
Relational Investors XVI, L.P.	Sale	463	1/30/2015	$	19.43	Open Market
Relational Investors XVI, L.P.	Sale	449	1/30/2015	$	19.43	Open Market
Relational Investors XVI, L.P.	Sale	846	1/30/2015	$	19.43	Open Market
Relational Investors XVI, L.P.	Sale	2,829	1/30/2015	$	19.43	Open Market
Relational Investors XVI, L.P.	Sale	1,761	1/30/2015	$	19.45	Open Market
Relational Investors XVI, L.P.	Sale	445	1/30/2015	$	19.45	Open Market
Relational Investors XVI, L.P.	Sale	2,121	1/30/2015	$	19.45	Open Market
Relational Investors XX, L.P.	Sale	140	1/30/2015	$	19.43	Open Market
Relational Investors XX, L.P.	Sale	7,401	1/30/2015	$	19.43	Open Market
Relational Investors XX, L.P.	Sale	486	1/30/2015	$	19.43	Open Market
Relational Investors XX, L.P.	Sale	231	1/30/2015	$	19.45	Open Market
Relational Investors XX, L.P.	Sale	5,920	1/30/2015	$	19.45	Open Market
Relational Investors XX, L.P.	Sale	1,422	1/30/2015	$	19.45	Open Market
Relational Investors XXIII, L.P.	Sale	41	1/30/2015	$	19.43	Open Market
Relational Investors XXIII, L.P.	Sale	10,488	1/30/2015	$	19.43	Open Market
Relational Investors XXIII, L.P.	Sale	883	1/30/2015	$	19.43	Open Market
Relational Investors XXIII, L.P.	Sale	134	1/30/2015	$	19.45	Open Market
Relational Investors XXIII, L.P.	Sale	8,388	1/30/2015	$	19.45	Open Market
Relational Investors XXIII, L.P.	Sale	2,243	1/30/2015	$	19.45	Open Market
Relational Investors IX, L.P.	Sale	603	1/30/2015	$	19.43	Open Market
Relational Investors IX, L.P.	Sale	727	1/30/2015	$	19.43	Open Market
Relational Investors IX, L.P.	Sale	311	1/30/2015	$	19.43	Open Market
Relational Investors IX, L.P.	Sale	1,956	1/30/2015	$	19.43	Open Market
Relational Investors IX, L.P.	Sale	7,114	1/30/2015	$	19.43	Open Market
Relational Investors IX, L.P.	Sale	312	1/30/2015	$	19.45	Open Market
Relational Investors IX, L.P.	Sale	3,182	1/30/2015	$	19.45	Open Market
Relational Investors IX, L.P.	Sale	720	1/30/2015	$	19.45	Open Market
Relational Investors IX, L.P.	Sale	308	1/30/2015	$	19.45	Open Market
Relational Investors IX, L.P.	Sale	5,582	1/30/2015	$	19.45	Open Market
Relational Investors LLC	Sale	33,508	1/30/2015	$	19.43	Open Market
Relational Investors LLC	Sale	31,610	1/30/2015	$	19.45	Open Market
Relational Investors XXIV, L.P.	Sale	764	1/30/2015	$	19.43	Open Market
Relational Investors XXIV, L.P.	Sale	288	1/30/2015	$	19.43	Open Market
Relational Investors XXIV, L.P.	Sale	66	1/30/2015	$	19.43	Open Market
Relational Investors XXIV, L.P.	Sale	135	1/30/2015	$	19.43	Open Market
Relational Investors XXIV, L.P.	Sale	616	1/30/2015	$	19.45	Open Market
Relational Investors XXIV, L.P.	Sale	189	1/30/2015	$	19.45	Open Market
Relational Investors XXIV, L.P.	Sale	166	1/30/2015	$	19.45	Open Market
Relational Investors XXIV, L.P.	Sale	211	1/30/2015	$	19.45	Open Market
Relational Investors LLC	Sale	4,990	2/2/2015	$	19.09	Open Market
Relational Investors LLC	Sale	7,272	2/2/2015	$	19.17	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	14,905	2/2/2015	$	19.09	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	17,808	2/2/2015	$	19.09	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	1,643	2/2/2015	$	19.09	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	11,581	2/2/2015	$	19.17	Open Market

Relational Investors Mid-Cap Fund I, L.P.	Sale	5,607	2/2/2015	$	19.17	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	32,876	2/2/2015	$	19.17	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	38,157	2/2/2015	$	19.09	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	4,842	2/2/2015	$	19.17	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	12,097	2/2/2015	$	19.17	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	8,655	2/2/2015	$	19.17	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	30,005	2/2/2015	$	19.17	Open Market
Relational Investors LLC	Sale	8,175	2/2/2015	$	19.09	Open Market
Relational Investors LLC	Sale	8,442	2/2/2015	$	19.09	Open Market
Relational Investors LLC	Sale	3,581	2/2/2015	$	19.09	Open Market
Relational Investors LLC	Sale	2,682	2/2/2015	$	19.09	Open Market
Relational Investors LLC	Sale	33,341	2/2/2015	$	19.17	Open Market
Relational Coast Partners, L.P.	Sale	1,244	2/2/2015	$	19.09	Open Market
Relational Coast Partners, L.P.	Sale	600	2/2/2015	$	19.09	Open Market
Relational Coast Partners, L.P.	Sale	2,111	2/2/2015	$	19.09	Open Market
Relational Coast Partners, L.P.	Sale	5,763	2/2/2015	$	19.17	Open Market
Relational Fund Partners, L.P.	Sale	392	2/2/2015	$	19.09	Open Market
Relational Fund Partners, L.P.	Sale	108	2/2/2015	$	19.17	Open Market
Relational Fund Partners, L.P.	Sale	217	2/2/2015	$	19.17	Open Market
Relational Fund Partners, L.P.	Sale	160	2/2/2015	$	19.17	Open Market
Relational Fund Partners, L.P.	Sale	70	2/2/2015	$	19.17	Open Market
Relational Fund Partners, L.P.	Sale	17	2/2/2015	$	19.17	Open Market
RH Fund 1, L.P.	Sale	60	2/2/2015	$	19.09	Open Market
RH Fund 1, L.P.	Sale	1,265	2/2/2015	$	19.09	Open Market
RH Fund 1, L.P.	Sale	536	2/2/2015	$	19.09	Open Market
RH Fund 1, L.P.	Sale	1,655	2/2/2015	$	19.09	Open Market
RH Fund 1, L.P.	Sale	5,124	2/2/2015	$	19.17	Open Market
Relational Investors XV, L.P.	Sale	332	2/2/2015	$	19.09	Open Market
Relational Investors XV, L.P.	Sale	1,500	2/2/2015	$	19.09	Open Market
Relational Investors XV, L.P.	Sale	636	2/2/2015	$	19.09	Open Market
Relational Investors XV, L.P.	Sale	1,680	2/2/2015	$	19.09	Open Market
Relational Investors XV, L.P.	Sale	6,045	2/2/2015	$	19.17	Open Market
Relational Investors XVI, L.P.	Sale	1,550	2/2/2015	$	19.09	Open Market
Relational Investors XVI, L.P.	Sale	602	2/2/2015	$	19.09	Open Market
Relational Investors XVI, L.P.	Sale	537	2/2/2015	$	19.17	Open Market
Relational Investors XVI, L.P.	Sale	846	2/2/2015	$	19.17	Open Market
Relational Investors XVI, L.P.	Sale	358	2/2/2015	$	19.17	Open Market
Relational Investors XVI, L.P.	Sale	1,395	2/2/2015	$	19.17	Open Market
Relational Investors XX, L.P.	Sale	414	2/2/2015	$	19.09	Open Market
Relational Investors XX, L.P.	Sale	1,366	2/2/2015	$	19.09	Open Market
Relational Investors XX, L.P.	Sale	578	2/2/2015	$	19.09	Open Market
Relational Investors XX, L.P.	Sale	1,408	2/2/2015	$	19.09	Open Market
Relational Investors XX, L.P.	Sale	5,489	2/2/2015	$	19.17	Open Market
Relational Investors XXIII, L.P.	Sale	360	2/2/2015	$	19.09	Open Market
Relational Investors XXIII, L.P.	Sale	1,935	2/2/2015	$	19.09	Open Market
Relational Investors XXIII, L.P.	Sale	819	2/2/2015	$	19.09	Open Market
Relational Investors XXIII, L.P.	Sale	2,240	2/2/2015	$	19.09	Open Market
Relational Investors XXIII, L.P.	Sale	7,803	2/2/2015	$	19.17	Open Market
Relational Investors IX, L.P.	Sale	357	2/2/2015	$	19.09	Open Market
Relational Investors IX, L.P.	Sale	2,546	2/2/2015	$	19.09	Open Market
Relational Investors IX, L.P.	Sale	2,123	2/2/2015	$	19.09	Open Market
Relational Investors IX, L.P.	Sale	509	2/2/2015	$	19.17	Open Market
Relational Investors IX, L.P.	Sale	1,956	2/2/2015	$	19.17	Open Market
Relational Investors IX, L.P.	Sale	829	2/2/2015	$	19.17	Open Market
Relational Investors IX, L.P.	Sale	4,030	2/2/2015	$	19.17	Open Market
Relational Investors LLC	Sale	15,723	2/2/2015	$	19.09	Open Market
Relational Investors LLC	Sale	22,911	2/2/2015	$	19.17	Open Market
Relational Investors XXIV, L.P.	Sale	102	2/2/2015	$	19.09	Open Market
Relational Investors XXIV, L.P.	Sale	486	2/2/2015	$	19.09	Open Market
Relational Investors XXIV, L.P.	Sale	857	2/2/2015	$	19.17	Open Market

Relational Investors LLC	Sale	6,131	2/3/2015	$	20.08	Open Market
Relational Investors LLC	Sale	3,113	2/3/2015	$	20.12	Open Market
Relational Investors LLC	Sale	13,767	2/3/2015	$	19.99	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	42,204	2/3/2015	$	20.08	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	21,434	2/3/2015	$	20.12	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	84,864	2/3/2015	$	19.99	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Sale	9,909	2/3/2015	$	19.99	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	46,872	2/3/2015	$	20.08	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	23,808	2/3/2015	$	20.12	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	19,018	2/3/2015	$	19.99	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	2,151	2/3/2015	$	19.99	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	9,214	2/3/2015	$	19.99	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	51,331	2/3/2015	$	19.99	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Sale	23,531	2/3/2015	$	19.99	Open Market
Relational Investors LLC	Sale	28,107	2/3/2015	$	20.08	Open Market
Relational Investors LLC	Sale	14,275	2/3/2015	$	20.12	Open Market
Relational Investors LLC	Sale	37,387	2/3/2015	$	19.99	Open Market
Relational Investors LLC	Sale	9,864	2/3/2015	$	19.99	Open Market
Relational Investors LLC	Sale	7,057	2/3/2015	$	19.99	Open Market
Relational Investors LLC	Sale	8,809	2/3/2015	$	19.99	Open Market
Relational Coast Partners, L.P.	Sale	4,858	2/3/2015	$	20.08	Open Market
Relational Coast Partners, L.P.	Sale	2,467	2/3/2015	$	20.12	Open Market
Relational Coast Partners, L.P.	Sale	4,230	2/3/2015	$	19.99	Open Market
Relational Coast Partners, L.P.	Sale	1,680	2/3/2015	$	19.99	Open Market
Relational Coast Partners, L.P.	Sale	1,202	2/3/2015	$	19.99	Open Market
Relational Coast Partners, L.P.	Sale	3,798	2/3/2015	$	19.99	Open Market
Relational Fund Partners, L.P.	Sale	482	2/3/2015	$	20.08	Open Market
Relational Fund Partners, L.P.	Sale	245	2/3/2015	$	20.12	Open Market
Relational Fund Partners, L.P.	Sale	1,083	2/3/2015	$	19.99	Open Market
RH Fund 1, L.P.	Sale	4,320	2/3/2015	$	20.08	Open Market
RH Fund 1, L.P.	Sale	2,194	2/3/2015	$	20.12	Open Market
RH Fund 1, L.P.	Sale	4,063	2/3/2015	$	19.99	Open Market
RH Fund 1, L.P.	Sale	1,488	2/3/2015	$	19.99	Open Market
RH Fund 1, L.P.	Sale	1,064	2/3/2015	$	19.99	Open Market
RH Fund 1, L.P.	Sale	3,086	2/3/2015	$	19.99	Open Market
Relational Investors XV, L.P.	Sale	5,096	2/3/2015	$	20.08	Open Market
Relational Investors XV, L.P.	Sale	2,588	2/3/2015	$	20.12	Open Market
Relational Investors XV, L.P.	Sale	5,166	2/3/2015	$	19.99	Open Market
Relational Investors XV, L.P.	Sale	1,745	2/3/2015	$	19.99	Open Market
Relational Investors XV, L.P.	Sale	1,249	2/3/2015	$	19.99	Open Market
Relational Investors XV, L.P.	Sale	3,285	2/3/2015	$	19.99	Open Market
Relational Investors XVI, L.P.	Sale	2,644	2/3/2015	$	20.08	Open Market
Relational Investors XVI, L.P.	Sale	1,342	2/3/2015	$	20.12	Open Market
Relational Investors XVI, L.P.	Sale	5,937	2/3/2015	$	19.99	Open Market
Relational Investors XX, L.P.	Sale	4,627	2/3/2015	$	20.08	Open Market
Relational Investors XX, L.P.	Sale	2,350	2/3/2015	$	20.12	Open Market
Relational Investors XX, L.P.	Sale	4,845	2/3/2015	$	19.99	Open Market
Relational Investors XX, L.P.	Sale	1,609	2/3/2015	$	19.99	Open Market
Relational Investors XX, L.P.	Sale	1,151	2/3/2015	$	19.99	Open Market
Relational Investors XX, L.P.	Sale	2,786	2/3/2015	$	19.99	Open Market
Relational Investors XXIII, L.P.	Sale	6,578	2/3/2015	$	20.08	Open Market
Relational Investors XXIII, L.P.	Sale	3,340	2/3/2015	$	20.12	Open Market
Relational Investors XXIII, L.P.	Sale	6,564	2/3/2015	$	19.99	Open Market
Relational Investors XXIII, L.P.	Sale	2,281	2/3/2015	$	19.99	Open Market
Relational Investors XXIII, L.P.	Sale	1,632	2/3/2015	$	19.99	Open Market
Relational Investors XXIII, L.P.	Sale	4,294	2/3/2015	$	19.99	Open Market
Relational Investors IX, L.P.	Sale	6,174	2/3/2015	$	20.08	Open Market
Relational Investors IX, L.P.	Sale	3,135	2/3/2015	$	20.12	Open Market
Relational Investors IX, L.P.	Sale	5,443	2/3/2015	$	19.99	Open Market
Relational Investors IX, L.P.	Sale	4,262	2/3/2015	$	19.99	Open Market
Relational Investors IX, L.P.	Sale	3,788	2/3/2015	$	19.99	Open Market
Relational Investors IX, L.P.	Sale	371	2/3/2015	$	19.99	Open Market
Relational Investors LLC	Sale	19,314	2/3/2015	$	20.08	Open Market
Relational Investors LLC	Sale	9,809	2/3/2015	$	20.12	Open Market
Relational Investors LLC	Sale	43,373	2/3/2015	$	19.99	Open Market
Relational Investors XXIV, L.P.	Sale	355	2/3/2015	$	20.08	Open Market
Relational Investors XXIV, L.P.	Sale	164	2/3/2015	$	20.08	Open Market
Relational Investors XXIV, L.P.	Sale	203	2/3/2015	$	20.08	Open Market
Relational Investors XXIV, L.P.	Sale	367	2/3/2015	$	20.12	Open Market
Relational Investors XXIV, L.P.	Sale	788	2/3/2015	$	19.99	Open Market
Relational Investors XXIV, L.P.	Sale	421	2/3/2015	$	19.99	Open Market
Relational Investors XXIV, L.P.	Sale	313	2/3/2015	$	19.99	Open Market
Relational Investors XXIV, L.P.	Sale	101	2/3/2015	$	19.99	Open Market