EX-99.A 2 a13-8251_1ex99da.htm EXHIBIT A

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 LLC		Purchase		593		2/25/2013		80.02		Open Market
Relational Coast Partners, L.P.		Purchase		729		2/25/2013		80.02		Open Market
Relational Fund Partners, L.P.		Purchase		46		2/25/2013		80.02		Open Market
Relational Investors IX, L.P.		Purchase		626		2/25/2013		80.02		Open Market
Relational Investors IX, L.P.		Purchase		269		2/25/2013		80.02		Open Market
Relational Investors Mid-Cap Fund I, L.P.		Purchase		3,023		2/25/2013		80.02		Open Market
Relational Investors Mid-Cap Fund II, L.P.		Purchase		2,368		2/25/2013		80.02		Open Market
Relational Investors XV, L.P.		Purchase		479		2/25/2013		80.02		Open Market
Relational Investors XX, L.P.		Purchase		426		2/25/2013		80.02		Open Market
Relational Investors XXIII, L.P.		Purchase		606		2/25/2013		80.02		Open Market
Relational Investors LLC		Purchase		2,340		2/25/2013		80.02		Open Market
Relational Investors LLC		Purchase		44,132		3/14/2013		81.90		Open Market
Relational Investors XVI, L.P.		Purchase		5,868		3/14/2013		81.90		Open Market
Relational Investors LLC		Purchase		57,372		3/15/2013		81.65		Open Market
Relational Investors LLC		Purchase		44,131		3/15/2013		81.74		Open Market
Relational Investors XVI, L.P.		Purchase		7,628		3/15/2013		81.65		Open Market
Relational Investors XVI, L.P.		Purchase		5,869		3/15/2013		81.74		Open Market
Relational Investors LLC		Purchase		89		3/20/2013		81.52		Open Market
Relational Investors LLC		Purchase		3,455		3/20/2013		81.79		Open Market
Relational Investors LLC		Purchase		3,455		3/20/2013		81.82		Open Market
Relational Investors LLC		Purchase		1,010		3/20/2013		81.52		Open Market
Relational Investors LLC		Purchase		38,763		3/20/2013		81.79		Open Market
Relational Investors LLC		Purchase		38,763		3/20/2013		81.82		Open Market
Relational Fund Partners, L.P.		Purchase		2		3/20/2013		81.52		Open Market
Relational Fund Partners, L.P.		Purchase		80		3/20/2013		81.79		Open Market
Relational Fund Partners, L.P.		Purchase		80		3/20/2013		81.82		Open Market
Relational Investors IX, L.P.		Purchase		45		3/20/2013		81.52		Open Market
Relational Investors IX, L.P.		Purchase		20		3/20/2013		81.52		Open Market
Relational Investors IX, L.P.		Purchase		2,536		3/20/2013		81.79		Open Market
Relational Investors IX, L.P.		Purchase		1,775		3/20/2013		81.82		Open Market
Relational Investors IX, L.P.		Purchase		761		3/20/2013		81.82		Open Market
Relational Investors XVI, L.P.		Purchase		134		3/20/2013		81.52		Open Market
Relational Investors XVI, L.P.		Purchase		5,166		3/20/2013		81.79		Open Market
Relational Investors XVI, L.P.		Purchase		5,166		3/20/2013		81.82		Open Market
Relational Investors LLC		Purchase		14,422		3/21/2013		81.44		Open Market
Relational Investors LLC		Purchase		3,455		3/21/2013		81.61		Open Market
Relational Investors LLC		Purchase		161,785		3/21/2013		81.44		Open Market
Relational Investors LLC		Purchase		38,760		3/21/2013		81.61		Open Market
Relational Fund Partners, L.P.		Purchase		338		3/21/2013		81.44		Open Market
Relational Fund Partners, L.P.		Purchase		81		3/21/2013		81.61		Open Market
Relational Investors IX, L.P.		Purchase		7,411		3/21/2013		81.44		Open Market
Relational Investors IX, L.P.		Purchase		3,176		3/21/2013		81.44		Open Market
Relational Investors IX, L.P.		Purchase		2,537		3/21/2013		81.61		Open Market
Relational Investors XVI, L.P.		Purchase		21,568		3/21/2013		81.44		Open Market
Relational Investors XVI, L.P.		Purchase		5,167		3/21/2013		81.61		Open Market