Relational Investors SC 13D SPX / RELATIONAL INVESTORS ownership change

Exhibit A

Transactions by Reporting Persons in the last 60 days.

Beneficial Ownership	Purchase or Sale	Quantity	Transaction Date	Price per Share (including commission)		How Effected
Relational Investors Mid-Cap Fund I, L.P.	Purchase	9,525	12/24/2012	$	66.47	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	28,391	12/24/2012	$	67.09	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	4,213	12/24/2012	$	66.47	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	12,559	12/24/2012	$	67.09	Open Market
Relational Investors LLC	Purchase	1,593	12/24/2012	$	66.47	Open Market
Relational Investors LLC	Purchase	4,750	12/24/2012	$	67.09	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	31,062	12/26/2012	$	67.80	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	4,506	12/26/2012	$	67.38	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	109,437	12/26/2012	$	67.77	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	13,741	12/26/2012	$	67.80	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	1,992	12/26/2012	$	67.38	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	48,415	12/26/2012	$	67.77	Open Market
Relational Investors LLC	Purchase	5,197	12/26/2012	$	67.80	Open Market
Relational Investors LLC	Purchase	753	12/26/2012	$	67.38	Open Market
Relational Investors LLC	Purchase	18,314	12/26/2012	$	67.77	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	73,529	12/27/2012	$	67.86	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	32,529	12/27/2012	$	67.86	Open Market
Relational Investors LLC	Purchase	12,305	12/27/2012	$	67.86	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	436	12/28/2012	$	68.01	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	192	12/28/2012	$	68.01	Open Market
Relational Investors LLC	Purchase	72	12/28/2012	$	68.01	Open Market
Relational Investors LLC	Purchase	9,973	1/9/2013	$	69.80	Open Market
Relational Coast Partners, L.P.	Purchase	31	1/9/2013	$	69.80	Open Market
Relational Coast Partners, L.P.	Purchase	7,773	1/9/2013	$	69.80	Open Market
Relational Fund Partners, L.P.	Purchase	765	1/9/2013	$	69.80	Open Market
Relational Investors IX, L.P.	Purchase	14,804	1/9/2013	$	69.80	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	57,305	1/9/2013	$	69.80	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	56,215	1/9/2013	$	69.80	Open Market
Relational Investors XV, L.P.	Purchase	7,476	1/9/2013	$	69.80	Open Market
Relational Investors XX, L.P.	Purchase	6,362	1/9/2013	$	69.80	Open Market
Relational Investors XXIII, L.P.	Purchase	8,721	1/9/2013	$	69.80	Open Market
Relational Investors LLC	Purchase	23,044	1/9/2013	$	69.80	Open Market
Relational Investors LLC	Purchase	7,773	1/10/2013	$	69.80	Open Market
Relational Investors LLC	Purchase	5,182	1/10/2013	$	69.75	Open Market

Relational Coast Partners, L.P.	Purchase	24	1/10/2013	$	69.80	Open Market
Relational Coast Partners, L.P.	Purchase	16	1/10/2013	$	69.75	Open Market
Relational Coast Partners, L.P.	Purchase	6,058	1/10/2013	$	69.80	Open Market
Relational Coast Partners, L.P.	Purchase	4,038	1/10/2013	$	69.75	Open Market
Relational Fund Partners, L.P.	Purchase	595	1/10/2013	$	69.80	Open Market
Relational Fund Partners, L.P.	Purchase	396	1/10/2013	$	69.75	Open Market
Relational Investors IX, L.P.	Purchase	8,076	1/10/2013	$	69.80	Open Market
Relational Investors IX, L.P.	Purchase	3,461	1/10/2013	$	69.80	Open Market
Relational Investors IX, L.P.	Purchase	5,384	1/10/2013	$	69.75	Open Market
Relational Investors IX, L.P.	Purchase	2,307	1/10/2013	$	69.75	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	44,662	1/10/2013	$	69.80	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	29,777	1/10/2013	$	69.75	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	43,811	1/10/2013	$	69.80	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	29,207	1/10/2013	$	69.75	Open Market
Relational Investors XV, L.P.	Purchase	5,826	1/10/2013	$	69.80	Open Market
Relational Investors XV, L.P.	Purchase	3,884	1/10/2013	$	69.75	Open Market
Relational Investors XX, L.P.	Purchase	4,958	1/10/2013	$	69.80	Open Market
Relational Investors XX, L.P.	Purchase	3,305	1/10/2013	$	69.75	Open Market
Relational Investors XXIII, L.P.	Purchase	6,797	1/10/2013	$	69.80	Open Market
Relational Investors XXIII, L.P.	Purchase	4,531	1/10/2013	$	69.75	Open Market
Relational Investors LLC	Purchase	17,959	1/10/2013	$	69.80	Open Market
Relational Investors LLC	Purchase	11,973	1/10/2013	$	69.75	Open Market
Relational Investors LLC	Purchase	2,539	1/11/2013	$	69.85	Open Market
Relational Investors LLC	Purchase	1,178	1/11/2013	$	69.74	Open Market
Relational Coast Partners, L.P.	Purchase	8	1/11/2013	$	69.85	Open Market
Relational Coast Partners, L.P.	Purchase	3	1/11/2013	$	69.74	Open Market
Relational Coast Partners, L.P.	Purchase	1,979	1/11/2013	$	69.85	Open Market
Relational Coast Partners, L.P.	Purchase	918	1/11/2013	$	69.74	Open Market
Relational Fund Partners, L.P.	Purchase	194	1/11/2013	$	69.85	Open Market
Relational Fund Partners, L.P.	Purchase	90	1/11/2013	$	69.74	Open Market
Relational Investors IX, L.P.	Purchase	2,638	1/11/2013	$	69.85	Open Market
Relational Investors IX, L.P.	Purchase	1,131	1/11/2013	$	69.85	Open Market
Relational Investors IX, L.P.	Purchase	1,749	1/11/2013	$	69.74	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	14,591	1/11/2013	$	69.85	Open Market

Relational Investors Mid-Cap Fund I, L.P.	Purchase	6,776	1/11/2013	$	69.74	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	14,311	1/11/2013	$	69.85	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	6,643	1/11/2013	$	69.74	Open Market
Relational Investors XV, L.P.	Purchase	1,903	1/11/2013	$	69.85	Open Market
Relational Investors XV, L.P.	Purchase	883	1/11/2013	$	69.74	Open Market
Relational Investors XX, L.P.	Purchase	1,620	1/11/2013	$	69.85	Open Market
Relational Investors XX, L.P.	Purchase	752	1/11/2013	$	69.74	Open Market
Relational Investors XXIII, L.P.	Purchase	2,220	1/11/2013	$	69.85	Open Market
Relational Investors XXIII, L.P.	Purchase	1,030	1/11/2013	$	69.74	Open Market
Relational Investors LLC	Purchase	5,866	1/11/2013	$	69.85	Open Market
Relational Investors LLC	Purchase	2,723	1/11/2013	$	69.74	Open Market
Relational Investors LLC	Purchase	7,773	1/14/2013	$	69.69	Open Market
Relational Coast Partners, L.P.	Purchase	24	1/14/2013	$	69.69	Open Market
Relational Coast Partners, L.P.	Purchase	6,059	1/14/2013	$	69.69	Open Market
Relational Fund Partners, L.P.	Purchase	597	1/14/2013	$	69.69	Open Market
Relational Investors IX, L.P.	Purchase	11,538	1/14/2013	$	69.69	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	44,654	1/14/2013	$	69.69	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	43,812	1/14/2013	$	69.69	Open Market
Relational Investors XV, L.P.	Purchase	5,827	1/14/2013	$	69.69	Open Market
Relational Investors XX, L.P.	Purchase	4,959	1/14/2013	$	69.69	Open Market
Relational Investors XXIII, L.P.	Purchase	6,797	1/14/2013	$	69.69	Open Market
Relational Investors LLC	Purchase	17,960	1/14/2013	$	69.69	Open Market
Relational Investors LLC	Purchase	5,182	1/15/2013	$	69.59	Open Market
Relational Coast Partners, L.P.	Purchase	16	1/15/2013	$	69.59	Open Market
Relational Coast Partners, L.P.	Purchase	4,039	1/15/2013	$	69.59	Open Market
Relational Fund Partners, L.P.	Purchase	398	1/15/2013	$	69.59	Open Market
Relational Investors IX, L.P.	Purchase	7,692	1/15/2013	$	69.59	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	29,769	1/15/2013	$	69.59	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	29,208	1/15/2013	$	69.59	Open Market
Relational Investors XV, L.P.	Purchase	3,885	1/15/2013	$	69.59	Open Market
Relational Investors XX, L.P.	Purchase	3,306	1/15/2013	$	69.59	Open Market
Relational Investors XXIII, L.P.	Purchase	4,532	1/15/2013	$	69.59	Open Market
Relational Investors LLC	Purchase	11,973	1/15/2013	$	69.59	Open Market
Relational Investors LLC	Purchase	5,183	1/16/2013	$	69.86	Open Market

Relational Coast Partners, L.P.	Purchase	17	1/16/2013	$	69.86	Open Market
Relational Coast Partners, L.P.	Purchase	4,039	1/16/2013	$	69.86	Open Market
Relational Fund Partners, L.P.	Purchase	399	1/16/2013	$	69.86	Open Market
Relational Investors IX, L.P.	Purchase	5,384	1/16/2013	$	69.86	Open Market
Relational Investors IX, L.P.	Purchase	2,308	1/16/2013	$	69.86	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	29,765	1/16/2013	$	69.86	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	29,208	1/16/2013	$	69.86	Open Market
Relational Investors XV, L.P.	Purchase	3,885	1/16/2013	$	69.86	Open Market
Relational Investors XX, L.P.	Purchase	3,306	1/16/2013	$	69.86	Open Market
Relational Investors XXIII, L.P.	Purchase	4,532	1/16/2013	$	69.86	Open Market
Relational Investors LLC	Purchase	11,974	1/16/2013	$	69.86	Open Market
Relational Investors LLC	Purchase	5,659	1/17/2013	$	70.78	Open Market
Relational Coast Partners, L.P.	Purchase	19	1/17/2013	$	70.78	Open Market
Relational Coast Partners, L.P.	Purchase	4,411	1/17/2013	$	70.78	Open Market
Relational Fund Partners, L.P.	Purchase	439	1/17/2013	$	70.78	Open Market
Relational Investors IX, L.P.	Purchase	5,880	1/17/2013	$	70.78	Open Market
Relational Investors IX, L.P.	Purchase	2,520	1/17/2013	$	70.78	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	32,486	1/17/2013	$	70.78	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	31,890	1/17/2013	$	70.78	Open Market
Relational Investors XV, L.P.	Purchase	4,242	1/17/2013	$	70.78	Open Market
Relational Investors XX, L.P.	Purchase	3,611	1/17/2013	$	70.78	Open Market
Relational Investors XXIII, L.P.	Purchase	4,948	1/17/2013	$	70.78	Open Market
Relational Investors LLC	Purchase	13,074	1/17/2013	$	70.78	Open Market
Relational Investors LLC	Purchase	760	1/18/2013	$	71.18	Open Market
Relational Investors LLC	Purchase	426	1/18/2013	$	71.05	Open Market
Relational Coast Partners, L.P.	Purchase	2	1/18/2013	$	71.18	Open Market
Relational Coast Partners, L.P.	Purchase	1	1/18/2013	$	71.05	Open Market
Relational Coast Partners, L.P.	Purchase	1,694	1/18/2013	$	71.18	Open Market
Relational Coast Partners, L.P.	Purchase	949	1/18/2013	$	71.05	Open Market
Relational Fund Partners, L.P.	Purchase	65	1/18/2013	$	71.18	Open Market
Relational Fund Partners, L.P.	Purchase	36	1/18/2013	$	71.05	Open Market
Relational Investors IX, L.P.	Purchase	1,203	1/18/2013	$	71.18	Open Market
Relational Investors IX, L.P.	Purchase	674	1/18/2013	$	71.05	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	18,230	1/18/2013	$	71.18	Open Market

Relational Investors Mid-Cap Fund I, L.P.	Purchase	10,215	1/18/2013	$	71.05	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	15,074	1/18/2013	$	71.18	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	8,445	1/18/2013	$	71.05	Open Market
Relational Investors XV, L.P.	Purchase	667	1/18/2013	$	71.18	Open Market
Relational Investors XV, L.P.	Purchase	373	1/18/2013	$	71.05	Open Market
Relational Investors XX, L.P.	Purchase	533	1/18/2013	$	71.18	Open Market
Relational Investors XX, L.P.	Purchase	298	1/18/2013	$	71.05	Open Market
Relational Investors XXIII, L.P.	Purchase	814	1/18/2013	$	71.18	Open Market
Relational Investors XXIII, L.P.	Purchase	456	1/18/2013	$	71.05	Open Market
Relational Investors LLC	Purchase	100	1/18/2013	$	71.73	Open Market
Relational Investors LLC	Purchase	5,071	1/18/2013	$	71.18	Open Market
Relational Investors LLC	Purchase	2,841	1/18/2013	$	71.05	Open Market
Relational Investors LLC	Purchase	443	1/22/2013	$	71.45	Open Market
Relational Investors LLC	Purchase	357	1/22/2013	$	72.24	Open Market
Relational Coast Partners, L.P.	Purchase	1	1/22/2013	$	71.45	Open Market
Relational Coast Partners, L.P.	Purchase	1	1/22/2013	$	72.25	Open Market
Relational Coast Partners, L.P.	Purchase	987	1/22/2013	$	71.45	Open Market
Relational Coast Partners, L.P.	Purchase	795	1/22/2013	$	72.24	Open Market
Relational Fund Partners, L.P.	Purchase	37	1/22/2013	$	71.45	Open Market
Relational Fund Partners, L.P.	Purchase	30	1/22/2013	$	72.24	Open Market
Relational Investors IX, L.P.	Purchase	701	1/22/2013	$	71.45	Open Market
Relational Investors IX, L.P.	Purchase	395	1/22/2013	$	72.24	Open Market
Relational Investors IX, L.P.	Purchase	169	1/22/2013	$	72.24	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	10,632	1/22/2013	$	71.45	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	8,556	1/22/2013	$	72.24	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	8,788	1/22/2013	$	71.45	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	7,073	1/22/2013	$	72.24	Open Market
Relational Investors XV, L.P.	Purchase	389	1/22/2013	$	71.45	Open Market
Relational Investors XV, L.P.	Purchase	313	1/22/2013	$	72.24	Open Market
Relational Investors XX, L.P.	Purchase	311	1/22/2013	$	71.45	Open Market
Relational Investors XX, L.P.	Purchase	250	1/22/2013	$	72.24	Open Market
Relational Investors XXIII, L.P.	Purchase	474	1/22/2013	$	71.45	Open Market
Relational Investors XXIII, L.P.	Purchase	382	1/22/2013	$	72.24	Open Market
Relational Investors LLC	Purchase	2,956	1/22/2013	$	71.45	Open Market

Relational Investors LLC	Purchase	2,379	1/22/2013	$	72.24	Open Market
Relational Investors LLC	Purchase	431	1/23/2013	$	72.49	Open Market
Relational Investors LLC	Purchase	1,476	1/23/2013	$	72.48	Open Market
Relational Coast Partners, L.P.	Purchase	1	1/23/2013	$	72.49	Open Market
Relational Coast Partners, L.P.	Purchase	4	1/23/2013	$	72.48	Open Market
Relational Coast Partners, L.P.	Purchase	960	1/23/2013	$	72.49	Open Market
Relational Coast Partners, L.P.	Purchase	3,288	1/23/2013	$	72.48	Open Market
Relational Fund Partners, L.P.	Purchase	36	1/23/2013	$	72.49	Open Market
Relational Fund Partners, L.P.	Purchase	129	1/23/2013	$	72.48	Open Market
Relational Investors IX, L.P.	Purchase	681	1/23/2013	$	72.49	Open Market
Relational Investors IX, L.P.	Purchase	2,335	1/23/2013	$	72.48	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	10,333	1/23/2013	$	72.49	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	35,371	1/23/2013	$	72.48	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	8,543	1/23/2013	$	72.49	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	29,255	1/23/2013	$	72.48	Open Market
Relational Investors XV, L.P.	Purchase	378	1/23/2013	$	72.49	Open Market
Relational Investors XV, L.P.	Purchase	1,295	1/23/2013	$	72.48	Open Market
Relational Investors XX, L.P.	Purchase	302	1/23/2013	$	72.49	Open Market
Relational Investors XX, L.P.	Purchase	1,035	1/23/2013	$	72.48	Open Market
Relational Investors XXIII, L.P.	Purchase	461	1/23/2013	$	72.49	Open Market
Relational Investors XXIII, L.P.	Purchase	1,581	1/23/2013	$	72.48	Open Market
Relational Investors LLC	Purchase	2,874	1/23/2013	$	72.49	Open Market
Relational Investors LLC	Purchase	9,842	1/23/2013	$	72.48	Open Market
Relational Investors LLC	Purchase	1,390	1/28/2013	$	74.45	Open Market
Relational Investors LLC	Purchase	156	1/28/2013	$	74.31	Open Market
Relational Coast Partners, L.P.	Purchase	4	1/28/2013	$	74.45	Open Market
Relational Coast Partners, L.P.	Purchase	3,096	1/28/2013	$	74.45	Open Market
Relational Coast Partners, L.P.	Purchase	349	1/28/2013	$	74.31	Open Market
Relational Fund Partners, L.P.	Purchase	121	1/28/2013	$	74.45	Open Market
Relational Fund Partners, L.P.	Purchase	13	1/28/2013	$	74.31	Open Market
Relational Investors IX, L.P.	Purchase	2,199	1/28/2013	$	74.45	Open Market
Relational Investors IX, L.P.	Purchase	248	1/28/2013	$	74.31	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	33,305	1/28/2013	$	74.45	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	3,764	1/28/2013	$	74.31	Open Market

Relational Investors Mid-Cap Fund II, L.P.	Purchase	27,547	1/28/2013	$	74.45	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	3,109	1/28/2013	$	74.31	Open Market
Relational Investors XV, L.P.	Purchase	1,220	1/28/2013	$	74.45	Open Market
Relational Investors XV, L.P.	Purchase	137	1/28/2013	$	74.31	Open Market
Relational Investors XX, L.P.	Purchase	975	1/28/2013	$	74.45	Open Market
Relational Investors XX, L.P.	Purchase	110	1/28/2013	$	74.31	Open Market
Relational Investors XXIII, L.P.	Purchase	1,488	1/28/2013	$	74.45	Open Market
Relational Investors XXIII, L.P.	Purchase	168	1/28/2013	$	74.31	Open Market
Relational Investors LLC	Purchase	9,267	1/28/2013	$	74.45	Open Market
Relational Investors LLC	Purchase	1,046	1/28/2013	$	74.31	Open Market
Relational Investors LLC	Purchase	229	1/29/2013	$	74.66	Open Market
Relational Coast Partners, L.P.	Purchase	510	1/29/2013	$	74.66	Open Market
Relational Fund Partners, L.P.	Purchase	19	1/29/2013	$	74.66	Open Market
Relational Investors IX, L.P.	Purchase	253	1/29/2013	$	74.66	Open Market
Relational Investors IX, L.P.	Purchase	109	1/29/2013	$	74.66	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	5,500	1/29/2013	$	74.66	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	4,545	1/29/2013	$	74.66	Open Market
Relational Investors XV, L.P.	Purchase	201	1/29/2013	$	74.66	Open Market
Relational Investors XX, L.P.	Purchase	160	1/29/2013	$	74.66	Open Market
Relational Investors XXIII, L.P.	Purchase	245	1/29/2013	$	74.66	Open Market
Relational Investors LLC	Purchase	1,529	1/29/2013	$	74.66	Open Market
Relational Investors LLC	Purchase	936	1/30/2013	$	74.96	Open Market
Relational Coast Partners, L.P.	Purchase	2	1/30/2013	$	74.96	Open Market
Relational Coast Partners, L.P.	Purchase	2,085	1/30/2013	$	74.96	Open Market
Relational Fund Partners, L.P.	Purchase	81	1/30/2013	$	74.96	Open Market
Relational Investors IX, L.P.	Purchase	1,481	1/30/2013	$	74.96	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	22,432	1/30/2013	$	74.96	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	18,552	1/30/2013	$	74.96	Open Market
Relational Investors XV, L.P.	Purchase	821	1/30/2013	$	74.96	Open Market
Relational Investors XX, L.P.	Purchase	657	1/30/2013	$	74.96	Open Market
Relational Investors XXIII, L.P.	Purchase	1,002	1/30/2013	$	74.96	Open Market
Relational Investors LLC	Purchase	6,241	1/30/2013	$	74.96	Open Market
Relational Investors LLC	Purchase	1,725	1/31/2013	$	74.67	Open Market
Relational Investors LLC	Purchase	862	1/31/2013	$	74.72	Open Market

Relational Coast Partners, L.P.	Purchase	5	1/31/2013	$	74.67	Open Market
Relational Coast Partners, L.P.	Purchase	2	1/31/2013	$	74.73	Open Market
Relational Coast Partners, L.P.	Purchase	3,841	1/31/2013	$	74.67	Open Market
Relational Coast Partners, L.P.	Purchase	1,920	1/31/2013	$	74.72	Open Market
Relational Fund Partners, L.P.	Purchase	152	1/31/2013	$	74.67	Open Market
Relational Fund Partners, L.P.	Purchase	75	1/31/2013	$	74.72	Open Market
Relational Investors IX, L.P.	Purchase	1,910	1/31/2013	$	74.67	Open Market
Relational Investors IX, L.P.	Purchase	818	1/31/2013	$	74.67	Open Market
Relational Investors IX, L.P.	Purchase	1,364	1/31/2013	$	74.72	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	41,310	1/31/2013	$	74.67	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	20,659	1/31/2013	$	74.72	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	34,173	1/31/2013	$	74.67	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	17,086	1/31/2013	$	74.72	Open Market
Relational Investors XV, L.P.	Purchase	1,513	1/31/2013	$	74.67	Open Market
Relational Investors XV, L.P.	Purchase	756	1/31/2013	$	74.72	Open Market
Relational Investors XX, L.P.	Purchase	1,210	1/31/2013	$	74.67	Open Market
Relational Investors XX, L.P.	Purchase	605	1/31/2013	$	74.72	Open Market
Relational Investors XXIII, L.P.	Purchase	1,847	1/31/2013	$	74.67	Open Market
Relational Investors XXIII, L.P.	Purchase	923	1/31/2013	$	74.72	Open Market
Relational Investors LLC	Purchase	11,496	1/31/2013	$	74.67	Open Market
Relational Investors LLC	Purchase	5,748	1/31/2013	$	74.72	Open Market
Relational Investors LLC	Purchase	197	2/1/2013	$	75.00	Open Market
Relational Investors LLC	Purchase	589	2/1/2013	$	74.99	Open Market
Relational Coast Partners, L.P.	Purchase	1	2/1/2013	$	74.99	Open Market
Relational Coast Partners, L.P.	Purchase	440	2/1/2013	$	75.00	Open Market
Relational Coast Partners, L.P.	Purchase	1,312	2/1/2013	$	74.99	Open Market
Relational Fund Partners, L.P.	Purchase	17	2/1/2013	$	75.00	Open Market
Relational Fund Partners, L.P.	Purchase	51	2/1/2013	$	74.99	Open Market
Relational Investors IX, L.P.	Purchase	312	2/1/2013	$	75.00	Open Market
Relational Investors IX, L.P.	Purchase	931	2/1/2013	$	74.99	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	4,742	2/1/2013	$	75.00	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	14,114	2/1/2013	$	74.99	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	3,917	2/1/2013	$	75.00	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	11,671	2/1/2013	$	74.99	Open Market

Relational Investors XV, L.P.	Purchase	173	2/1/2013	$	75.00	Open Market
Relational Investors XV, L.P.	Purchase	517	2/1/2013	$	74.99	Open Market
Relational Investors XX, L.P.	Purchase	138	2/1/2013	$	75.00	Open Market
Relational Investors XX, L.P.	Purchase	413	2/1/2013	$	74.99	Open Market
Relational Investors XXIII, L.P.	Purchase	211	2/1/2013	$	75.00	Open Market
Relational Investors XXIII, L.P.	Purchase	630	2/1/2013	$	74.99	Open Market
Relational Investors LLC	Purchase	1,317	2/1/2013	$	75.00	Open Market
Relational Investors LLC	Purchase	3,926	2/1/2013	$	74.99	Open Market
Relational Investors LLC	Purchase	625	2/4/2013	$	74.87	Open Market
Relational Investors LLC	Purchase	1,725	2/4/2013	$	74.89	Open Market
Relational Coast Partners, L.P.	Purchase	2	2/4/2013	$	74.87	Open Market
Relational Coast Partners, L.P.	Purchase	6	2/4/2013	$	74.89	Open Market
Relational Coast Partners, L.P.	Purchase	1,393	2/4/2013	$	74.87	Open Market
Relational Coast Partners, L.P.	Purchase	3,842	2/4/2013	$	74.89	Open Market
Relational Fund Partners, L.P.	Purchase	54	2/4/2013	$	74.87	Open Market
Relational Fund Partners, L.P.	Purchase	153	2/4/2013	$	74.89	Open Market
Relational Investors IX, L.P.	Purchase	989	2/4/2013	$	74.87	Open Market
Relational Investors IX, L.P.	Purchase	1,910	2/4/2013	$	74.89	Open Market
Relational Investors IX, L.P.	Purchase	818	2/4/2013	$	74.89	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	14,981	2/4/2013	$	74.87	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	41,306	2/4/2013	$	74.89	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	12,391	2/4/2013	$	74.87	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	34,173	2/4/2013	$	74.89	Open Market
Relational Investors XV, L.P.	Purchase	549	2/4/2013	$	74.87	Open Market
Relational Investors XV, L.P.	Purchase	1,514	2/4/2013	$	74.89	Open Market
Relational Investors XX, L.P.	Purchase	438	2/4/2013	$	74.87	Open Market
Relational Investors XX, L.P.	Purchase	1,210	2/4/2013	$	74.89	Open Market
Relational Investors XXIII, L.P.	Purchase	670	2/4/2013	$	74.87	Open Market
Relational Investors XXIII, L.P.	Purchase	1,847	2/4/2013	$	74.89	Open Market
Relational Investors LLC	Purchase	4,168	2/4/2013	$	74.87	Open Market
Relational Investors LLC	Purchase	11,496	2/4/2013	$	74.89	Open Market
Relational Investors LLC	Purchase	914	2/5/2013	$	74.96	Open Market
Relational Investors LLC	Purchase	98	2/5/2013	$	74.94	Open Market
Relational Coast Partners, L.P.	Purchase	3	2/5/2013	$	74.96	Open Market

Relational Coast Partners, L.P.	Purchase	2,036	2/5/2013	$	74.96	Open Market
Relational Coast Partners, L.P.	Purchase	218	2/5/2013	$	74.94	Open Market
Relational Fund Partners, L.P.	Purchase	80	2/5/2013	$	74.96	Open Market
Relational Fund Partners, L.P.	Purchase	8	2/5/2013	$	74.94	Open Market
Relational Investors IX, L.P.	Purchase	1,012	2/5/2013	$	74.96	Open Market
Relational Investors IX, L.P.	Purchase	434	2/5/2013	$	74.96	Open Market
Relational Investors IX, L.P.	Purchase	155	2/5/2013	$	74.94	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	21,894	2/5/2013	$	74.96	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	2,358	2/5/2013	$	74.94	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	18,112	2/5/2013	$	74.96	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	1,947	2/5/2013	$	74.94	Open Market
Relational Investors XV, L.P.	Purchase	802	2/5/2013	$	74.96	Open Market
Relational Investors XV, L.P.	Purchase	86	2/5/2013	$	74.94	Open Market
Relational Investors XX, L.P.	Purchase	641	2/5/2013	$	74.96	Open Market
Relational Investors XX, L.P.	Purchase	68	2/5/2013	$	74.94	Open Market
Relational Investors XXIII, L.P.	Purchase	979	2/5/2013	$	74.96	Open Market
Relational Investors XXIII, L.P.	Purchase	105	2/5/2013	$	74.94	Open Market
Relational Investors LLC	Purchase	6,093	2/5/2013	$	74.96	Open Market
Relational Investors LLC	Purchase	655	2/5/2013	$	74.94	Open Market
Relational Investors LLC	Purchase	99	2/6/2013	$	75.00	Open Market
Relational Coast Partners, L.P.	Purchase	222	2/6/2013	$	75.00	Open Market
Relational Fund Partners, L.P.	Purchase	8	2/6/2013	$	75.00	Open Market
Relational Investors IX, L.P.	Purchase	158	2/6/2013	$	75.00	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	2,397	2/6/2013	$	75.00	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	1,979	2/6/2013	$	75.00	Open Market
Relational Investors XV, L.P.	Purchase	87	2/6/2013	$	75.00	Open Market
Relational Investors XX, L.P.	Purchase	70	2/6/2013	$	75.00	Open Market
Relational Investors XXIII, L.P.	Purchase	107	2/6/2013	$	75.00	Open Market
Relational Investors LLC	Purchase	666	2/6/2013	$	75.00	Open Market
Relational Investors LLC	Purchase	1,578	2/7/2013	$	75.00	Open Market
Relational Coast Partners, L.P.	Purchase	5	2/7/2013	$	75.00	Open Market
Relational Coast Partners, L.P.	Purchase	3,513	2/7/2013	$	75.00	Open Market
Relational Fund Partners, L.P.	Purchase	140	2/7/2013	$	75.00	Open Market
Relational Investors IX, L.P.	Purchase	2,495	2/7/2013	$	75.00	Open Market

Relational Investors Mid-Cap Fund I, L.P.	Purchase	37,765	2/7/2013	$	75.00		Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	31,247	2/7/2013	$	75.00		Open Market
Relational Investors XV, L.P.	Purchase	1,385	2/7/2013	$	75.00		Open Market
Relational Investors XX, L.P.	Purchase	1,107	2/7/2013	$	75.00		Open Market
Relational Investors XXIII, L.P.	Purchase	1,689	2/7/2013	$	75.00		Open Market
Relational Investors LLC	Purchase	10,512	2/7/2013	$	75.00		Open Market
Relational Investors LLC	Purchase	517	2/8/2013	$	75.75		Open Market
Relational Investors LLC	Purchase	892	2/8/2013	$	75.74		Open Market
Relational Coast Partners, L.P.	Purchase	2	2/8/2013	$	75.75		Open Market
Relational Coast Partners, L.P.	Purchase	3	2/8/2013	$	75.74		Open Market
Relational Coast Partners, L.P.	Purchase	1,151	2/8/2013	$	75.75		Open Market
Relational Coast Partners, L.P.	Purchase	1,987	2/8/2013	$	75.74		Open Market
Relational Fund Partners, L.P.	Purchase	45	2/8/2013	$	75.75		Open Market
Relational Fund Partners, L.P.	Purchase	79	2/8/2013	$	75.74		Open Market
Relational Investors IX, L.P.	Purchase	572	2/8/2013	$	75.75	��	Open Market
Relational Investors IX, L.P.	Purchase	245	2/8/2013	$	75.75		Open Market
Relational Investors IX, L.P.	Purchase	988	2/8/2013	$	75.74		Open Market
Relational Investors IX, L.P.	Purchase	423	2/8/2013	$	75.74		Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	12,377	2/8/2013	$	75.75		Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	21,352	2/8/2013	$	75.74		Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	10,238	2/8/2013	$	75.75		Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	17,668	2/8/2013	$	75.74		Open Market
Relational Investors XV, L.P.	Purchase	453	2/8/2013	$	75.75		Open Market
Relational Investors XV, L.P.	Purchase	783	2/8/2013	$	75.74		Open Market
Relational Investors XX, L.P.	Purchase	362	2/8/2013	$	75.75		Open Market
Relational Investors XX, L.P.	Purchase	626	2/8/2013	$	75.74		Open Market
Relational Investors XXIII, L.P.	Purchase	553	2/8/2013	$	75.75		Open Market
Relational Investors XXIII, L.P.	Purchase	955	2/8/2013	$	75.74		Open Market
Relational Investors LLC	Purchase	3,444	2/8/2013	$	75.75		Open Market
Relational Investors LLC	Purchase	5,944	2/8/2013	$	75.74		Open Market
Relational Investors LLC	Purchase	2,287	2/11/2013	$	75.71		Open Market
Relational Investors LLC	Purchase	259	2/11/2013	$	75.61		Open Market
Relational Coast Partners, L.P.	Purchase	9	2/11/2013	$	75.71		Open Market
Relational Coast Partners, L.P.	Purchase	2	2/11/2013	$	75.62		Open Market

Relational Coast Partners, L.P.	Purchase	5,089	2/11/2013	$	75.71	Open Market
Relational Coast Partners, L.P.	Purchase	576	2/11/2013	$	75.61	Open Market
Relational Fund Partners, L.P.	Purchase	208	2/11/2013	$	75.71	Open Market
Relational Fund Partners, L.P.	Purchase	25	2/11/2013	$	75.61	Open Market
Relational Investors IX, L.P.	Purchase	2,530	2/11/2013	$	75.71	Open Market
Relational Investors IX, L.P.	Purchase	1,085	2/11/2013	$	75.71	Open Market
Relational Investors IX, L.P.	Purchase	409	2/11/2013	$	75.61	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	54,645	2/11/2013	$	75.71	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	6,192	2/11/2013	$	75.61	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	45,241	2/11/2013	$	75.71	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	5,126	2/11/2013	$	75.61	Open Market
Relational Investors XV, L.P.	Purchase	2,006	2/11/2013	$	75.71	Open Market
Relational Investors XV, L.P.	Purchase	228	2/11/2013	$	75.61	Open Market
Relational Investors XX, L.P.	Purchase	1,605	2/11/2013	$	75.71	Open Market
Relational Investors XX, L.P.	Purchase	182	2/11/2013	$	75.61	Open Market
Relational Investors XXIII, L.P.	Purchase	2,449	2/11/2013	$	75.71	Open Market
Relational Investors XXIII, L.P.	Purchase	277	2/11/2013	$	75.61	Open Market
Relational Investors LLC	Purchase	15,222	2/11/2013	$	75.71	Open Market
Relational Investors LLC	Purchase	1,724	2/11/2013	$	75.61	Open Market
Relational Investors LLC	Purchase	1,908	2/13/2013	$	76.65	Open Market
Relational Coast Partners, L.P.	Purchase	8	2/13/2013	$	76.65	Open Market
Relational Coast Partners, L.P.	Purchase	3,420	2/13/2013	$	76.65	Open Market
Relational Fund Partners, L.P.	Purchase	147	2/13/2013	$	76.65	Open Market
Relational Investors IX, L.P.	Purchase	2,010	2/13/2013	$	76.65	Open Market
Relational Investors IX, L.P.	Purchase	861	2/13/2013	$	76.65	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	5,998	2/13/2013	$	76.65	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	4,127	2/13/2013	$	76.65	Open Market
Relational Investors XV, L.P.	Purchase	1,626	2/13/2013	$	76.65	Open Market
Relational Investors XX, L.P.	Purchase	1,383	2/13/2013	$	76.65	Open Market
Relational Investors XXIII, L.P.	Purchase	1,963	2/13/2013	$	76.65	Open Market
Relational Investors LLC	Purchase	11,549	2/13/2013	$	76.65	Open Market
Relational Investors LLC	Purchase	14,822	2/14/2013	$	78.00	Open Market
Relational Coast Partners, L.P.	Purchase	67	2/14/2013	$	78.00	Open Market
Relational Coast Partners, L.P.	Purchase	26,569	2/14/2013	$	78.00	Open Market

Relational Fund Partners, L.P.	Purchase	1,153	2/14/2013	$	78.00	Open Market
Relational Investors IX, L.P.	Purchase	22,308	2/14/2013	$	78.00	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	46,601	2/14/2013	$	78.00	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	32,066	2/14/2013	$	78.00	Open Market
Relational Investors XV, L.P.	Purchase	12,634	2/14/2013	$	78.00	Open Market
Relational Investors XX, L.P.	Purchase	10,747	2/14/2013	$	78.00	Open Market
Relational Investors XXIII, L.P.	Purchase	15,253	2/14/2013	$	78.00	Open Market
Relational Investors LLC	Purchase	89,681	2/14/2013	$	78.00	Open Market
Relational Investors LLC	Purchase	2,491	2/15/2013	$	78.68	Open Market
Relational Investors LLC	Purchase	78	2/15/2013	$	79.01	Open Market
Relational Coast Partners, L.P.	Purchase	11	2/15/2013	$	78.68	Open Market
Relational Coast Partners, L.P.	Purchase	4,465	2/15/2013	$	78.68	Open Market
Relational Coast Partners, L.P.	Purchase	140	2/15/2013	$	79.01	Open Market
Relational Fund Partners, L.P.	Purchase	193	2/15/2013	$	78.68	Open Market
Relational Fund Partners, L.P.	Purchase	5	2/15/2013	$	79.01	Open Market
Relational Investors IX, L.P.	Purchase	2,624	2/15/2013	$	78.68	Open Market
Relational Investors IX, L.P.	Purchase	1,125	2/15/2013	$	78.68	Open Market
Relational Investors IX, L.P.	Purchase	118	2/15/2013	$	79.01	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	7,832	2/15/2013	$	78.68	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	246	2/15/2013	$	79.01	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	5,389	2/15/2013	$	78.68	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	169	2/15/2013	$	79.01	Open Market
Relational Investors XV, L.P.	Purchase	2,123	2/15/2013	$	78.68	Open Market
Relational Investors XV, L.P.	Purchase	66	2/15/2013	$	79.01	Open Market
Relational Investors XX, L.P.	Purchase	1,806	2/15/2013	$	78.68	Open Market
Relational Investors XX, L.P.	Purchase	56	2/15/2013	$	79.01	Open Market
Relational Investors XXIII, L.P.	Purchase	2,563	2/15/2013	$	78.68	Open Market
Relational Investors XXIII, L.P.	Purchase	80	2/15/2013	$	79.01	Open Market
Relational Investors LLC	Purchase	15,078	2/15/2013	$	78.68	Open Market
Relational Investors LLC	Purchase	481	2/15/2013	$	79.01	Open Market
Relational Investors LLC	Purchase	1,785	2/19/2013	$	79.31	Open Market
Relational Investors LLC	Purchase	2,290	2/19/2013	$	79.77	Open Market
Relational Investors LLC	Purchase	4,251	2/19/2013	$	80.01	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	5,613	2/19/2013	$	79.31	Open Market

Relational Investors Mid-Cap Fund I, L.P.	Purchase	7,201	2/19/2013	$	79.77	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	13,365	2/19/2013	$	80.01	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	3,862	2/19/2013	$	79.31	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	4,955	2/19/2013	$	79.77	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	9,196	2/19/2013	$	80.01	Open Market
Relational Coast Partners, L.P.	Purchase	3,208	2/19/2013	$	79.31	Open Market
Relational Coast Partners, L.P.	Purchase	4,116	2/19/2013	$	79.77	Open Market
Relational Coast Partners, L.P.	Purchase	7,639	2/19/2013	$	80.01	Open Market
Relational Fund Partners, L.P.	Purchase	138	2/19/2013	$	79.31	Open Market
Relational Fund Partners, L.P.	Purchase	177	2/19/2013	$	79.77	Open Market
Relational Fund Partners, L.P.	Purchase	330	2/19/2013	$	80.01	Open Market
Relational Investors XV, L.P.	Purchase	1,521	2/19/2013	$	79.31	Open Market
Relational Investors XV, L.P.	Purchase	1,952	2/19/2013	$	79.77	Open Market
Relational Investors XV, L.P.	Purchase	3,623	2/19/2013	$	80.01	Open Market
Relational Investors XX, L.P.	Purchase	1,294	2/19/2013	$	79.31	Open Market
Relational Investors XX, L.P.	Purchase	1,660	2/19/2013	$	79.77	Open Market
Relational Investors XX, L.P.	Purchase	3,082	2/19/2013	$	80.01	Open Market
Relational Investors XXIII, L.P.	Purchase	1,837	2/19/2013	$	79.31	Open Market
Relational Investors XXIII, L.P.	Purchase	2,357	2/19/2013	$	79.77	Open Market
Relational Investors XXIII, L.P.	Purchase	4,374	2/19/2013	$	80.01	Open Market
Relational Investors IX, L.P.	Purchase	1,881	2/19/2013	$	79.31	Open Market
Relational Investors IX, L.P.	Purchase	806	2/19/2013	$	79.31	Open Market
Relational Investors IX, L.P.	Purchase	3,447	2/19/2013	$	79.77	Open Market
Relational Investors IX, L.P.	Purchase	6,398	2/19/2013	$	80.01	Open Market
Relational Investors LLC	Purchase	10,805	2/19/2013	$	79.31	Open Market
Relational Investors LLC	Purchase	13,862	2/19/2013	$	79.77	Open Market
Relational Investors LLC	Purchase	25,723	2/19/2013	$	80.01	Open Market

Relational Investors LLC	Purchase	2,834	2/20/2013	$	79.95	Open Market
Relational Investors LLC	Purchase	2,725	2/20/2013	$	79.91	Open Market
Relational Investors LLC	Purchase	24,096	2/20/2013	$	79.85	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	8,912	2/20/2013	$	79.95	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	8,569	2/20/2013	$	79.91	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	75,755	2/20/2013	$	79.85	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	6,132	2/20/2013	$	79.95	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	5,896	2/20/2013	$	79.91	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	52,128	2/20/2013	$	79.85	Open Market
Relational Coast Partners, L.P.	Purchase	5,094	2/20/2013	$	79.95	Open Market
Relational Coast Partners, L.P.	Purchase	4,898	2/20/2013	$	79.91	Open Market
Relational Coast Partners, L.P.	Purchase	43,304	2/20/2013	$	79.85	Open Market
Relational Fund Partners, L.P.	Purchase	219	2/20/2013	$	79.95	Open Market
Relational Fund Partners, L.P.	Purchase	211	2/20/2013	$	79.91	Open Market
Relational Fund Partners, L.P.	Purchase	1,878	2/20/2013	$	79.85	Open Market
Relational Investors XV, L.P.	Purchase	2,416	2/20/2013	$	79.95	Open Market
Relational Investors XV, L.P.	Purchase	2,323	2/20/2013	$	79.91	Open Market
Relational Investors XV, L.P.	Purchase	20,541	2/20/2013	$	79.85	Open Market
Relational Investors XX, L.P.	Purchase	2,055	2/20/2013	$	79.95	Open Market
Relational Investors XX, L.P.	Purchase	1,976	2/20/2013	$	79.91	Open Market
Relational Investors XX, L.P.	Purchase	17,472	2/20/2013	$	79.85	Open Market
Relational Investors XXIII, L.P.	Purchase	2,917	2/20/2013	$	79.95	Open Market
Relational Investors XXIII, L.P.	Purchase	2,805	2/20/2013	$	79.91	Open Market
Relational Investors XXIII, L.P.	Purchase	24,796	2/20/2013	$	79.85	Open Market
Relational Investors IX, L.P.	Purchase	2,986	2/20/2013	$	79.95	Open Market
Relational Investors IX, L.P.	Purchase	1,280	2/20/2013	$	79.95	Open Market
Relational Investors IX, L.P.	Purchase	4,102	2/20/2013	$	79.91	Open Market
Relational Investors IX, L.P.	Purchase	25,385	2/20/2013	$	79.85	Open Market
Relational Investors IX, L.P.	Purchase	10,880	2/20/2013	$	79.85	Open Market
Relational Investors LLC	Purchase	17,155	2/20/2013	$	79.95	Open Market
Relational Investors LLC	Purchase	16,495	2/20/2013	$	79.91	Open Market
Relational Investors LLC	Purchase	145,765	2/20/2013	$	79.85	Open Market
Relational Investors LLC	Purchase	5,670	2/21/2013	$	79.09	Open Market
Relational Investors LLC	Purchase	3,752	2/21/2013	$	78.97	Open Market
Relational Investors LLC	Purchase	15,071	2/21/2013	$	79.03	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	17,825	2/21/2013	$	79.09	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	11,795	2/21/2013	$	78.97	Open Market

Relational Investors Mid-Cap Fund I, L.P.	Purchase	47,374	2/21/2013	$	79.03	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	12,267	2/21/2013	$	79.09	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	8,116	2/21/2013	$	78.97	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	32,598	2/21/2013	$	79.03	Open Market
Relational Coast Partners, L.P.	Purchase	10,189	2/21/2013	$	79.09	Open Market
Relational Coast Partners, L.P.	Purchase	6,744	2/21/2013	$	78.97	Open Market
Relational Coast Partners, L.P.	Purchase	27,079	2/21/2013	$	79.03	Open Market
Relational Fund Partners, L.P.	Purchase	442	2/21/2013	$	79.09	Open Market
Relational Fund Partners, L.P.	Purchase	294	2/21/2013	$	78.97	Open Market
Relational Fund Partners, L.P.	Purchase	1,178	2/21/2013	$	79.03	Open Market
Relational Investors XV, L.P.	Purchase	4,833	2/21/2013	$	79.09	Open Market
Relational Investors XV, L.P.	Purchase	3,200	2/21/2013	$	78.97	Open Market
Relational Investors XV, L.P.	Purchase	12,845	2/21/2013	$	79.03	Open Market
Relational Investors XX, L.P.	Purchase	4,111	2/21/2013	$	79.09	Open Market
Relational Investors XX, L.P.	Purchase	2,720	2/21/2013	$	78.97	Open Market
Relational Investors XX, L.P.	Purchase	10,928	2/21/2013	$	79.03	Open Market
Relational Investors XXIII, L.P.	Purchase	5,836	2/21/2013	$	79.09	Open Market
Relational Investors XXIII, L.P.	Purchase	3,860	2/21/2013	$	78.97	Open Market
Relational Investors XXIII, L.P.	Purchase	15,506	2/21/2013	$	79.03	Open Market
Relational Investors IX, L.P.	Purchase	5,973	2/21/2013	$	79.09	Open Market
Relational Investors IX, L.P.	Purchase	2,560	2/21/2013	$	79.09	Open Market
Relational Investors IX, L.P.	Purchase	5,646	2/21/2013	$	78.97	Open Market
Relational Investors IX, L.P.	Purchase	15,875	2/21/2013	$	79.03	Open Market
Relational Investors IX, L.P.	Purchase	6,804	2/21/2013	$	79.03	Open Market
Relational Investors LLC	Purchase	34,294	2/21/2013	$	79.09	Open Market
Relational Investors LLC	Purchase	22,691	2/21/2013	$	78.97	Open Market
Relational Investors LLC	Purchase	91,136	2/21/2013	$	79.03	Open Market
Relational Investors LLC	Purchase	5,196	2/22/2013	$	79.98	Open Market
Relational Investors LLC	Purchase	1,399	2/22/2013	$	79.97	Open Market
Relational Coast Partners, L.P.	Purchase	6,384	2/22/2013	$	79.98	Open Market
Relational Coast Partners, L.P.	Purchase	1,719	2/22/2013	$	79.97	Open Market
Relational Fund Partners, L.P.	Purchase	416	2/22/2013	$	79.98	Open Market
Relational Fund Partners, L.P.	Purchase	111	2/22/2013	$	79.97	Open Market
Relational Investors IX, L.P.	Purchase	7,834	2/22/2013	$	79.98	Open Market
Relational Investors IX, L.P.	Purchase	2,109	2/22/2013	$	79.97	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	26,398	2/22/2013	$	79.98	Open Market
Relational Investors Mid-Cap Fund I, L.P.	Purchase	7,111	2/22/2013	$	79.97	Open Market

Relational Investors Mid-Cap Fund II, L.P.	Purchase	20,723	2/22/2013	$	79.98	Open Market
Relational Investors Mid-Cap Fund II, L.P.	Purchase	5,580	2/22/2013	$	79.97	Open Market
Relational Investors XV, L.P.	Purchase	4,199	2/22/2013	$	79.98	Open Market
Relational Investors XV, L.P.	Purchase	1,130	2/22/2013	$	79.97	Open Market
Relational Investors XX, L.P.	Purchase	3,729	2/22/2013	$	79.98	Open Market
Relational Investors XX, L.P.	Purchase	1,004	2/22/2013	$	79.97	Open Market
Relational Investors XXIII, L.P.	Purchase	5,311	2/22/2013	$	79.98	Open Market
Relational Investors XXIII, L.P.	Purchase	1,430	2/22/2013	$	79.97	Open Market
Relational Investors LLC	Purchase	20,481	2/22/2013	$	79.98	Open Market
Relational Investors LLC	Purchase	5,514	2/22/2013	$	79.97	Open Market