Exhibit A

Transactions by Reporting Persons in the last 60 days not previously reported.

Beneficial Ownership	Purchase or Sale	Quantity	Transaction Date	Price per Share (including commission)		How Effected
Relational Investors, L.P.	Sale	24,035	1/24/2011	$	14.66	Open Market
Relational Investors, L.P.	Sale	26,729	1/24/2011	$	14.66	Open Market
RH Fund 1, L.P.	Sale	14,187	1/24/2011	$	14.66	Open Market
Relational Investors LLC	Sale	19,919	1/24/2011	$	14.66	Open Market
RH Fund 6, L.P.	Sale	8,512	1/24/2011	$	14.66	Open Market
Relational Investors VIII, L.P.	Sale	5,783	1/24/2011	$	14.66	Open Market
Relational Investors VIII, L.P.	Sale	39,464	1/24/2011	$	14.66	Open Market
Relational Investors IX, L.P.	Sale	9,383	1/24/2011	$	14.66	Open Market
Relational Investors IX, L.P.	Sale	4,021	1/24/2011	$	14.66	Open Market
Relational Investors X, L.P.	Sale	3,645	1/24/2011	$	14.66	Open Market
Relational Investors XV, L.P.	Sale	3,544	1/24/2011	$	14.66	Open Market
Relational Investors XVI, L.P.	Sale	4,702	1/24/2011	$	14.66	Open Market
Relational Investors XX, L.P.	Sale	2,837	1/24/2011	$	14.66	Open Market
Relational Investors XXII, L.P.	Sale	4,698	1/24/2011	$	14.66	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	1/24/2011	$	14.66	Open Market
Relational Investors LLC	Sale	9,748	1/24/2011	$	14.66	Open Market
Relational Investors LLC	Sale	1,720	1/24/2011	$	14.66	Open Market
Relational Coast Partners, L.P.	Sale	1,776	1/24/2011	$	14.66	Open Market
Relational Coast Partners, L.P.	Sale	182	1/24/2011	$	14.66	Open Market
Relational Fund Partners, L.P.	Sale	93	1/24/2011	$	14.66	Open Market
Relational Fund Partners, L.P.	Sale	376	1/24/2011	$	14.66	Open Market
Relational Fund Partners, L.P.	Sale	22	1/24/2011	$	14.66	Open Market
Relational Fund Partners, L.P.	Sale	64	1/24/2011	$	14.66	Open Market
Relational Fund Partners, L.P.	Sale	11	1/24/2011	$	14.66	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	1/24/2011	$	14.66	Open Market
Relational Investors LLC	Sale	17,150	1/24/2011	$	14.66	Open Market

Relational Investors, L.P.	Sale	50,764	1/25/2011	$	14.60	Open Market
RH Fund 1, L.P.	Sale	14,187	1/25/2011	$	14.60	Open Market
Relational Investors LLC	Sale	19,919	1/25/2011	$	14.60	Open Market
RH Fund 6, L.P.	Sale	5,919	1/25/2011	$	14.60	Open Market
RH Fund 6, L.P.	Sale	2,593	1/25/2011	$	14.60	Open Market
Relational Investors VIII, L.P.	Sale	45,247	1/25/2011	$	14.60	Open Market
Relational Investors IX, L.P.	Sale	9,383	1/25/2011	$	14.60	Open Market
Relational Investors IX, L.P.	Sale	4,021	1/25/2011	$	14.60	Open Market
Relational Investors X, L.P.	Sale	3,645	1/25/2011	$	14.60	Open Market
Relational Investors XV, L.P.	Sale	3,544	1/25/2011	$	14.60	Open Market
Relational Investors XVI, L.P.	Sale	4,702	1/25/2011	$	14.60	Open Market
Relational Investors XX, L.P.	Sale	2,837	1/25/2011	$	14.60	Open Market
Relational Investors XXII, L.P.	Sale	4,698	1/25/2011	$	14.60	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	1/25/2011	$	14.60	Open Market
Relational Investors LLC	Sale	9,748	1/25/2011	$	14.60	Open Market
Relational Investors LLC	Sale	1,720	1/25/2011	$	14.60	Open Market
Relational Coast Partners, L.P.	Sale	1,776	1/25/2011	$	14.60	Open Market
Relational Coast Partners, L.P.	Sale	182	1/25/2011	$	14.60	Open Market
Relational Fund Partners, L.P.	Sale	469	1/25/2011	$	14.60	Open Market
Relational Fund Partners, L.P.	Sale	43	1/25/2011	$	14.60	Open Market
Relational Fund Partners, L.P.	Sale	43	1/25/2011	$	14.60	Open Market
Relational Fund Partners, L.P.	Sale	11	1/25/2011	$	14.60	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	1/25/2011	$	14.60	Open Market
Relational Investors LLC	Sale	17,150	1/25/2011	$	14.60	Open Market
Relational Investors, L.P.	Sale	50,762	1/26/2011	$	14.51	Open Market
RH Fund 1, L.P.	Sale	14,187	1/26/2011	$	14.51	Open Market
Relational Investors LLC	Sale	19,919	1/26/2011	$	14.51	Open Market
RH Fund 6, L.P.	Sale	8,512	1/26/2011	$	14.51	Open Market
Relational Investors VIII, L.P.	Sale	45,248	1/26/2011	$	14.51	Open Market
Relational Investors IX, L.P.	Sale	9,383	1/26/2011	$	14.51	Open Market
Relational Investors IX, L.P.	Sale	4,021	1/26/2011	$	14.51	Open Market
Relational Investors X, L.P.	Sale	3,645	1/26/2011	$	14.51	Open Market
Relational Investors XV, L.P.	Sale	3,544	1/26/2011	$	14.51	Open Market
Relational Investors XVI, L.P.	Sale	4,702	1/26/2011	$	14.51	Open Market

Relational Investors XX, L.P.	Sale	2,837	1/26/2011	$	14.51	Open Market
Relational Investors XXII, L.P.	Sale	4,698	1/26/2011	$	14.51	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	1/26/2011	$	14.51	Open Market
Relational Investors LLC	Sale	9,748	1/26/2011	$	14.51	Open Market
Relational Investors LLC	Sale	1,720	1/26/2011	$	14.51	Open Market
Relational Coast Partners, L.P.	Sale	1,776	1/26/2011	$	14.51	Open Market
Relational Coast Partners, L.P.	Sale	182	1/26/2011	$	14.51	Open Market
Relational Fund Partners, L.P.	Sale	469	1/26/2011	$	14.51	Open Market
Relational Fund Partners, L.P.	Sale	87	1/26/2011	$	14.51	Open Market
Relational Fund Partners, L.P.	Sale	11	1/26/2011	$	14.51	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	1/26/2011	$	14.51	Open Market
Relational Investors LLC	Sale	17,150	1/26/2011	$	14.51	Open Market
Relational Investors, L.P.	Sale	28,891	1/27/2011	$	14.85	Open Market
Relational Investors, L.P.	Sale	21,870	1/27/2011	$	14.85	Open Market
RH Fund 1, L.P.	Sale	14,187	1/27/2011	$	14.85	Open Market
Relational Investors LLC	Sale	19,919	1/27/2011	$	14.85	Open Market
RH Fund 6, L.P.	Sale	3,834	1/27/2011	$	14.85	Open Market
RH Fund 6, L.P.	Sale	4,679	1/27/2011	$	14.85	Open Market
Relational Investors VIII, L.P.	Sale	45,248	1/27/2011	$	14.85	Open Market
Relational Investors IX, L.P.	Sale	9,383	1/27/2011	$	14.85	Open Market
Relational Investors IX, L.P.	Sale	4,021	1/27/2011	$	14.85	Open Market
Relational Investors X, L.P.	Sale	3,645	1/27/2011	$	14.85	Open Market
Relational Investors XV, L.P.	Sale	3,544	1/27/2011	$	14.85	Open Market
Relational Investors XVI, L.P.	Sale	2,705	1/27/2011	$	14.85	Open Market
Relational Investors XVI, L.P.	Sale	1,997	1/27/2011	$	14.85	Open Market
Relational Investors XX, L.P.	Sale	2,837	1/27/2011	$	14.85	Open Market
Relational Investors XXII, L.P.	Sale	4,698	1/27/2011	$	14.85	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	1/27/2011	$	14.85	Open Market
Relational Investors LLC	Sale	9,748	1/27/2011	$	14.85	Open Market
Relational Investors LLC	Sale	1,720	1/27/2011	$	14.85	Open Market
Relational Coast Partners, L.P.	Sale	292	1/27/2011	$	14.85	Open Market
Relational Coast Partners, L.P.	Sale	1,484	1/27/2011	$	14.85	Open Market
Relational Coast Partners, L.P.	Sale	182	1/27/2011	$	14.85	Open Market
Relational Fund Partners, L.P.	Sale	469	1/27/2011	$	14.85	Open Market

Relational Fund Partners, L.P.	Sale	87	1/27/2011	$	14.85	Open Market
Relational Fund Partners, L.P.	Sale	11	1/27/2011	$	14.85	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	1/27/2011	$	14.85	Open Market
Relational Investors LLC	Sale	17,150	1/27/2011	$	14.85	Open Market
Relational Investors, L.P.	Sale	50,761	1/28/2011	$	14.82	Open Market
RH Fund 1, L.P.	Sale	9,863	1/28/2011	$	14.82	Open Market
RH Fund 1, L.P.	Sale	4,324	1/28/2011	$	14.82	Open Market
Relational Investors LLC	Sale	19,919	1/28/2011	$	14.82	Open Market
RH Fund 6, L.P.	Sale	8,513	1/28/2011	$	14.82	Open Market
Relational Investors VIII, L.P.	Sale	45,248	1/28/2011	$	14.82	Open Market
Relational Investors IX, L.P.	Sale	9,383	1/28/2011	$	14.82	Open Market
Relational Investors IX, L.P.	Sale	4,021	1/28/2011	$	14.82	Open Market
Relational Investors X, L.P.	Sale	3,645	1/28/2011	$	14.82	Open Market
Relational Investors XV, L.P.	Sale	3,544	1/28/2011	$	14.82	Open Market
Relational Investors XVI, L.P.	Sale	4,702	1/28/2011	$	14.82	Open Market
Relational Investors XX, L.P.	Sale	2,837	1/28/2011	$	14.82	Open Market
Relational Investors XXII, L.P.	Sale	4,698	1/28/2011	$	14.82	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	1/28/2011	$	14.82	Open Market
Relational Investors LLC	Sale	9,748	1/28/2011	$	14.82	Open Market
Relational Investors LLC	Sale	1,720	1/28/2011	$	14.82	Open Market
Relational Coast Partners, L.P.	Sale	1,776	1/28/2011	$	14.82	Open Market
Relational Coast Partners, L.P.	Sale	182	1/28/2011	$	14.82	Open Market
Relational Fund Partners, L.P.	Sale	71	1/28/2011	$	14.82	Open Market
Relational Fund Partners, L.P.	Sale	398	1/28/2011	$	14.82	Open Market
Relational Fund Partners, L.P.	Sale	87	1/28/2011	$	14.82	Open Market
Relational Fund Partners, L.P.	Sale	11	1/28/2011	$	14.81	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	1/28/2011	$	14.82	Open Market
Relational Investors LLC	Sale	17,150	1/28/2011	$	14.82	Open Market
Relational Investors, L.P.	Sale	50,761	1/31/2011	$	14.99	Open Market
RH Fund 1, L.P.	Sale	14,187	1/31/2011	$	14.99	Open Market
Relational Investors LLC	Sale	19,919	1/31/2011	$	14.99	Open Market
RH Fund 6, L.P.	Sale	8,513	1/31/2011	$	14.99	Open Market
Relational Investors VIII, L.P.	Sale	45,248	1/31/2011	$	14.99	Open Market
Relational Investors IX, L.P.	Sale	9,383	1/31/2011	$	14.99	Open Market

Relational Investors IX, L.P.	Sale	4,021	1/31/2011	$	14.99	Open Market
Relational Investors X, L.P.	Sale	3,645	1/31/2011	$	14.99	Open Market
Relational Investors XV, L.P.	Sale	323	1/31/2011	$	14.99	Open Market
Relational Investors XV, L.P.	Sale	3,221	1/31/2011	$	14.99	Open Market
Relational Investors XVI, L.P.	Sale	4,702	1/31/2011	$	14.99	Open Market
Relational Investors XX, L.P.	Sale	2,837	1/31/2011	$	14.99	Open Market
Relational Investors XXII, L.P.	Sale	4,698	1/31/2011	$	14.99	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	1/31/2011	$	14.99	Open Market
Relational Investors LLC	Sale	9,748	1/31/2011	$	14.99	Open Market
Relational Investors LLC	Sale	1,720	1/31/2011	$	14.99	Open Market
Relational Coast Partners, L.P.	Sale	1,776	1/31/2011	$	14.99	Open Market
Relational Coast Partners, L.P.	Sale	133	1/31/2011	$	14.99	Open Market
Relational Coast Partners, L.P.	Sale	49	1/31/2011	$	14.99	Open Market
Relational Fund Partners, L.P.	Sale	469	1/31/2011	$	14.99	Open Market
Relational Fund Partners, L.P.	Sale	34	1/31/2011	$	14.99	Open Market
Relational Fund Partners, L.P.	Sale	53	1/31/2011	$	14.99	Open Market
Relational Fund Partners, L.P.	Sale	11	1/31/2011	$	14.99	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	1/31/2011	$	14.99	Open Market
Relational Investors LLC	Sale	17,150	1/31/2011	$	14.99	Open Market
Relational Investors, L.P.	Sale	50,761	2/1/2011	$	15.38	Open Market
RH Fund 1, L.P.	Sale	12,011	2/1/2011	$	15.38	Open Market
RH Fund 1, L.P.	Sale	2,176	2/1/2011	$	15.38	Open Market
Relational Investors LLC	Sale	19,919	2/1/2011	$	15.38	Open Market
RH Fund 6, L.P.	Sale	8,513	2/1/2011	$	15.38	Open Market
Relational Investors VIII, L.P.	Sale	45,248	2/1/2011	$	15.38	Open Market
Relational Investors IX, L.P.	Sale	9,383	2/1/2011	$	15.38	Open Market
Relational Investors IX, L.P.	Sale	4,021	2/1/2011	$	15.38	Open Market
Relational Investors X, L.P.	Sale	3,645	2/1/2011	$	15.38	Open Market
Relational Investors XV, L.P.	Sale	3,544	2/1/2011	$	15.38	Open Market
Relational Investors XVI, L.P.	Sale	4,702	2/1/2011	$	15.38	Open Market
Relational Investors XX, L.P.	Sale	2,837	2/1/2011	$	15.38	Open Market
Relational Investors XXII, L.P.	Sale	4,698	2/1/2011	$	15.38	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	2/1/2011	$	15.38	Open Market
Relational Investors LLC	Sale	9,748	2/1/2011	$	15.38	Open Market

Relational Investors LLC	Sale	1,720	2/1/2011	$	15.38	Open Market
Relational Coast Partners, L.P.	Sale	1,550	2/1/2011	$	15.38	Open Market
Relational Coast Partners, L.P.	Sale	226	2/1/2011	$	15.38	Open Market
Relational Coast Partners, L.P.	Sale	182	2/1/2011	$	15.38	Open Market
Relational Fund Partners, L.P.	Sale	469	2/1/2011	$	15.38	Open Market
Relational Fund Partners, L.P.	Sale	87	2/1/2011	$	15.38	Open Market
Relational Fund Partners, L.P.	Sale	11	2/1/2011	$	15.38	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	2/1/2011	$	15.38	Open Market
Relational Investors LLC	Sale	17,150	2/1/2011	$	15.38	Open Market
Relational Investors, L.P.	Sale	50,761	2/2/2011	$	15.32	Open Market
RH Fund 1, L.P.	Sale	14,187	2/2/2011	$	15.32	Open Market
Relational Investors LLC	Sale	19,919	2/2/2011	$	15.32	Open Market
RH Fund 6, L.P.	Sale	8,513	2/2/2011	$	15.32	Open Market
Relational Investors VIII, L.P.	Sale	45,248	2/2/2011	$	15.32	Open Market
Relational Investors IX, L.P.	Sale	9,383	2/2/2011	$	15.32	Open Market
Relational Investors IX, L.P.	Sale	4,021	2/2/2011	$	15.32	Open Market
Relational Investors X, L.P.	Sale	3,645	2/2/2011	$	15.32	Open Market
Relational Investors XV, L.P.	Sale	3,544	2/2/2011	$	15.32	Open Market
Relational Investors XVI, L.P.	Sale	4,702	2/2/2011	$	15.32	Open Market
Relational Investors XX, L.P.	Sale	2,837	2/2/2011	$	15.32	Open Market
Relational Investors XXII, L.P.	Sale	4,698	2/2/2011	$	15.32	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	2/2/2011	$	15.32	Open Market
Relational Investors LLC	Sale	9,748	2/2/2011	$	15.32	Open Market
Relational Investors LLC	Sale	1,720	2/2/2011	$	15.32	Open Market
Relational Coast Partners, L.P.	Sale	1,776	2/2/2011	$	15.32	Open Market
Relational Coast Partners, L.P.	Sale	182	2/2/2011	$	15.32	Open Market
Relational Fund Partners, L.P.	Sale	469	2/2/2011	$	15.32	Open Market
Relational Fund Partners, L.P.	Sale	87	2/2/2011	$	15.32	Open Market
Relational Fund Partners, L.P.	Sale	11	2/2/2011	$	15.32	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	2/2/2011	$	15.32	Open Market
Relational Investors LLC	Sale	17,150	2/2/2011	$	15.32	Open Market
Relational Investors, L.P.	Sale	50,760	2/3/2011	$	15.21	Open Market
RH Fund 1, L.P.	Sale	14,187	2/3/2011	$	15.21	Open Market
Relational Investors LLC	Sale	19,919	2/3/2011	$	15.21	Open Market

RH Fund 6, L.P.	Sale	8,513	2/3/2011	$	15.21	Open Market
Relational Investors VIII, L.P.	Sale	45,248	2/3/2011	$	15.21	Open Market
Relational Investors IX, L.P.	Sale	216	2/3/2011	$	15.21	Open Market
Relational Investors IX, L.P.	Sale	9,167	2/3/2011	$	15.21	Open Market
Relational Investors IX, L.P.	Sale	4,021	2/3/2011	$	15.21	Open Market
Relational Investors X, L.P.	Sale	3,645	2/3/2011	$	15.21	Open Market
Relational Investors XV, L.P.	Sale	3,544	2/3/2011	$	15.21	Open Market
Relational Investors XVI, L.P.	Sale	4,702	2/3/2011	$	15.21	Open Market
Relational Investors XX, L.P.	Sale	2,837	2/3/2011	$	15.21	Open Market
Relational Investors XXII, L.P.	Sale	2,694	2/3/2011	$	15.21	Open Market
Relational Investors XXII, L.P.	Sale	2,004	2/3/2011	$	15.21	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	2/3/2011	$	15.21	Open Market
Relational Investors LLC	Sale	9,748	2/3/2011	$	15.21	Open Market
Relational Investors LLC	Sale	1,720	2/3/2011	$	15.21	Open Market
Relational Coast Partners, L.P.	Sale	1,776	2/3/2011	$	15.21	Open Market
Relational Coast Partners, L.P.	Sale	182	2/3/2011	$	15.21	Open Market
Relational Fund Partners, L.P.	Sale	469	2/3/2011	$	15.21	Open Market
Relational Fund Partners, L.P.	Sale	87	2/3/2011	$	15.21	Open Market
Relational Fund Partners, L.P.	Sale	12	2/3/2011	$	15.21	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	2/3/2011	$	15.21	Open Market
Relational Investors LLC	Sale	11,299	2/3/2011	$	15.21	Open Market
Relational Investors LLC	Sale	5,851	2/3/2011	$	15.21	Open Market
Relational Investors, L.P.	Sale	50,760	2/4/2011	$	15.47	Open Market
RH Fund 1, L.P.	Sale	14,187	2/4/2011	$	15.47	Open Market
Relational Investors LLC	Sale	19,919	2/4/2011	$	15.47	Open Market
RH Fund 6, L.P.	Sale	8,513	2/4/2011	$	15.47	Open Market
Relational Investors VIII, L.P.	Sale	9,718	2/4/2011	$	15.47	Open Market
Relational Investors VIII, L.P.	Sale	35,530	2/4/2011	$	15.47	Open Market
Relational Investors IX, L.P.	Sale	9,383	2/4/2011	$	15.47	Open Market
Relational Investors IX, L.P.	Sale	4,021	2/4/2011	$	15.47	Open Market
Relational Investors X, L.P.	Sale	3,645	2/4/2011	$	15.47	Open Market
Relational Investors XV, L.P.	Sale	3,544	2/4/2011	$	15.47	Open Market
Relational Investors XVI, L.P.	Sale	4,702	2/4/2011	$	15.47	Open Market
Relational Investors XX, L.P.	Sale	2,837	2/4/2011	$	15.47	Open Market

Relational Investors XXII, L.P.	Sale	4,698	2/4/2011	$	15.47	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	2/4/2011	$	15.47	Open Market
Relational Investors LLC	Sale	9,748	2/4/2011	$	15.47	Open Market
Relational Investors LLC	Sale	1,720	2/4/2011	$	15.47	Open Market
Relational Coast Partners, L.P.	Sale	1,776	2/4/2011	$	15.47	Open Market
Relational Coast Partners, L.P.	Sale	182	2/4/2011	$	15.47	Open Market
Relational Fund Partners, L.P.	Sale	469	2/4/2011	$	15.47	Open Market
Relational Fund Partners, L.P.	Sale	87	2/4/2011	$	15.47	Open Market
Relational Fund Partners, L.P.	Sale	9	2/4/2011	$	15.47	Open Market
Relational Fund Partners, L.P.	Sale	3	2/4/2011	$	15.47	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	2/4/2011	$	15.47	Open Market
Relational Investors LLC	Sale	17,150	2/4/2011	$	15.47	Open Market
Relational Investors, L.P.	Sale	50,760	2/7/2011	$	15.41	Open Market
RH Fund 1, L.P.	Sale	14,187	2/7/2011	$	15.41	Open Market
Relational Investors LLC	Sale	19,919	2/7/2011	$	15.41	Open Market
RH Fund 6, L.P.	Sale	7,247	2/7/2011	$	15.41	Open Market
RH Fund 6, L.P.	Sale	1,266	2/7/2011	$	15.41	Open Market
Relational Investors VIII, L.P.	Sale	45,248	2/7/2011	$	15.41	Open Market
Relational Investors IX, L.P.	Sale	9,383	2/7/2011	$	15.41	Open Market
Relational Investors IX, L.P.	Sale	4,021	2/7/2011	$	15.41	Open Market
Relational Investors X, L.P.	Sale	3,645	2/7/2011	$	15.41	Open Market
Relational Investors XV, L.P.	Sale	3,544	2/7/2011	$	15.41	Open Market
Relational Investors XVI, L.P.	Sale	4,702	2/7/2011	$	15.41	Open Market
Relational Investors XX, L.P.	Sale	439	2/7/2011	$	15.41	Open Market
Relational Investors XX, L.P.	Sale	2,398	2/7/2011	$	15.41	Open Market
Relational Investors XXII, L.P.	Sale	4,698	2/7/2011	$	15.41	Open Market
Relational Investors XXIII, L.P.	Sale	480	2/7/2011	$	15.41	Open Market
Relational Investors XXIII, L.P.	Sale	3,361	2/7/2011	$	15.41	Open Market
Relational Investors LLC	Sale	9,748	2/7/2011	$	15.41	Open Market
Relational Investors LLC	Sale	1,720	2/7/2011	$	15.41	Open Market
Relational Coast Partners, L.P.	Sale	1,776	2/7/2011	$	15.41	Open Market
Relational Coast Partners, L.P.	Sale	182	2/7/2011	$	15.41	Open Market
Relational Fund Partners, L.P.	Sale	469	2/7/2011	$	15.41	Open Market
Relational Fund Partners, L.P.	Sale	87	2/7/2011	$	15.41	Open Market

Relational Fund Partners, L.P.	Sale	12	2/7/2011	$	15.41	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,558	2/7/2011	$	15.41	Open Market
Relational Investors LLC	Sale	17,150	2/7/2011	$	15.41	Open Market
Relational Investors, L.P.	Sale	50,760	2/8/2011	$	15.18	Open Market
RH Fund 1, L.P.	Sale	14,187	2/8/2011	$	15.18	Open Market
Relational Investors LLC	Sale	19,919	2/8/2011	$	15.18	Open Market
RH Fund 6, L.P.	Sale	8,513	2/8/2011	$	15.18	Open Market
Relational Investors VIII, L.P.	Sale	45,248	2/8/2011	$	15.18	Open Market
Relational Investors IX, L.P.	Sale	9,383	2/8/2011	$	15.18	Open Market
Relational Investors IX, L.P.	Sale	4,021	2/8/2011	$	15.18	Open Market
Relational Investors X, L.P.	Sale	3,645	2/8/2011	$	15.18	Open Market
Relational Investors XV, L.P.	Sale	3,544	2/8/2011	$	15.18	Open Market
Relational Investors XVI, L.P.	Sale	4,702	2/8/2011	$	15.18	Open Market
Relational Investors XX, L.P.	Sale	2,837	2/8/2011	$	15.18	Open Market
Relational Investors XXII, L.P.	Sale	4,698	2/8/2011	$	15.18	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	2/8/2011	$	15.18	Open Market
Relational Investors LLC	Sale	9,748	2/8/2011	$	15.18	Open Market
Relational Investors LLC	Sale	1,720	2/8/2011	$	15.18	Open Market
Relational Coast Partners, L.P.	Sale	902	2/8/2011	$	15.18	Open Market
Relational Coast Partners, L.P.	Sale	874	2/8/2011	$	15.18	Open Market
Relational Coast Partners, L.P.	Sale	182	2/8/2011	$	15.18	Open Market
Relational Fund Partners, L.P.	Sale	469	2/8/2011	$	15.18	Open Market
Relational Fund Partners, L.P.	Sale	87	2/8/2011	$	15.18	Open Market
Relational Fund Partners, L.P.	Sale	12	2/8/2011	$	15.18	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	663	2/8/2011	$	15.18	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	7,895	2/8/2011	$	15.18	Open Market
Relational Investors LLC	Sale	17,150	2/8/2011	$	15.18	Open Market
Relational Investors, L.P.	Sale	50,759	2/9/2011	$	15.24	Open Market
RH Fund 1, L.P.	Sale	14,187	2/9/2011	$	15.24	Open Market
Relational Investors LLC	Sale	19,919	2/9/2011	$	15.24	Open Market
RH Fund 6, L.P.	Sale	8,513	2/9/2011	$	15.24	Open Market
Relational Investors VIII, L.P.	Sale	45,248	2/9/2011	$	15.24	Open Market
Relational Investors IX, L.P.	Sale	9,383	2/9/2011	$	15.24	Open Market
Relational Investors IX, L.P.	Sale	4,021	2/9/2011	$	15.24	Open Market

Relational Investors X, L.P.	Sale	3,645	2/9/2011	$	15.24	Open Market
Relational Investors XV, L.P.	Sale	119	2/9/2011	$	15.24	Open Market
Relational Investors XV, L.P.	Sale	3,425	2/9/2011	$	15.24	Open Market
Relational Investors XVI, L.P.	Sale	4,702	2/9/2011	$	15.24	Open Market
Relational Investors XX, L.P.	Sale	2,837	2/9/2011	$	15.24	Open Market
Relational Investors XXII, L.P.	Sale	4,698	2/9/2011	$	15.24	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	2/9/2011	$	15.24	Open Market
Relational Investors LLC	Sale	9,748	2/9/2011	$	15.24	Open Market
Relational Investors LLC	Sale	1,720	2/9/2011	$	15.24	Open Market
Relational Coast Partners, L.P.	Sale	1,776	2/9/2011	$	15.24	Open Market
Relational Coast Partners, L.P.	Sale	182	2/9/2011	$	15.24	Open Market
Relational Fund Partners, L.P.	Sale	469	2/9/2011	$	15.24	Open Market
Relational Fund Partners, L.P.	Sale	87	2/9/2011	$	15.24	Open Market
Relational Fund Partners, L.P.	Sale	12	2/9/2011	$	15.24	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,559	2/9/2011	$	15.24	Open Market
Relational Investors LLC	Sale	17,150	2/9/2011	$	15.24	Open Market
Relational Investors, L.P.	Sale	50,759	2/10/2011	$	15.37	Open Market
RH Fund 1, L.P.	Sale	14,187	2/10/2011	$	15.37	Open Market
Relational Investors LLC	Sale	19,919	2/10/2011	$	15.37	Open Market
RH Fund 6, L.P.	Sale	8,513	2/10/2011	$	15.37	Open Market
Relational Investors VIII, L.P.	Sale	45,248	2/10/2011	$	15.37	Open Market
Relational Investors IX, L.P.	Sale	9,383	2/10/2011	$	15.37	Open Market
Relational Investors IX, L.P.	Sale	4,021	2/10/2011	$	15.37	Open Market
Relational Investors X, L.P.	Sale	3,645	2/10/2011	$	15.37	Open Market
Relational Investors XV, L.P.	Sale	119	2/10/2011	$	15.37	Open Market
Relational Investors XV, L.P.	Sale	3,425	2/10/2011	$	15.37	Open Market
Relational Investors XVI, L.P.	Sale	4,702	2/10/2011	$	15.37	Open Market
Relational Investors XX, L.P.	Sale	2,837	2/10/2011	$	15.37	Open Market
Relational Investors XXII, L.P.	Sale	4,698	2/10/2011	$	15.37	Open Market
Relational Investors XXIII, L.P.	Sale	3,841	2/10/2011	$	15.37	Open Market
Relational Investors LLC	Sale	9,748	2/10/2011	$	15.37	Open Market
Relational Investors LLC	Sale	1,720	2/10/2011	$	15.37	Open Market
Relational Coast Partners, L.P.	Sale	1,776	2/10/2011	$	15.37	Open Market
Relational Coast Partners, L.P.	Sale	182	2/10/2011	$	15.37	Open Market

Relational Fund Partners, L.P.	Sale	469	2/10/2011	$	15.37	Open Market
Relational Fund Partners, L.P.	Sale	87	2/10/2011	$	15.37	Open Market
Relational Fund Partners, L.P.	Sale	12	2/10/2011	$	15.37	Open Market
Relational Investors Alpha Fund I, L.P.	Sale	8,559	2/10/2011	$	15.37	Open Market
Relational Investors LLC	Sale	17,150	2/10/2011	$	15.37	Open Market