Columbia Wanger Asset Management Llc

10 Feb 12

10 Feb 11

10 Feb 10

06 Feb 09

11 Oct 05

Ariel Capital Management Inc Et Al

Amended Statement Of Beneficial Ownership Of More Than 5%.

09 Sep 02

Amended Statement Of Beneficial Ownership Of More Than 5%.

08 Aug 02

Amended Statement Of Beneficial Ownership Of More Than 5%.

20 Mar 01

05 Aug 99

07 Feb 97

Wasatch Advisors Inc /adv

11 Jun 02

Amended Statement Of Beneficial Ownership Of More Than 5%.

13 Feb 01

10 Sep 99

12 Jun 98

25 Aug 97

Barings Llc

Correspondence: Notice Of Effectiveness.

14 Dec 06

03 Feb 06

10 Feb 03

27 Jan 00

12 Jan 98

Price T Rowe Associates Inc /md/

Amended Statement Of Beneficial Ownership Of More Than 5%.

14 Feb 22

Amended Statement Of Beneficial Ownership Of More Than 5%.

14 Feb 22

10 Feb 16

10 Feb 98

05 Feb 98

Amvescap Plc \ga\

Amended Statement Of Beneficial Ownership Of More Than 5%.

10 Jan 01

Amended Statement Of Beneficial Ownership Of More Than 5%.

10 Jan 01

11 Feb 99

13 Oct 98

12 Feb 98