Ownership

Top Holders   Shares Held % O/S Share Change Filing Date Capital Research Global Investors 1,759,054 7.5 -325,946 09/30/09 Barclays Global Investors, N.A. 1,727,001 7.4 187,153 09/30/09 Fidelity Management & Research 1,620,276 6.9 -1,086,949 09/30/09 J.P. Morgan Investment Management Inc. (New York) 1,259,659 5.4 37,264 09/30/09 Gagnon Securities LLC 955,587 4.1 119,883 09/30/09 Vanguard Group, Inc. 913,785 3.9 21,592 09/30/09 MFC Global Investment Management (US), LLC 781,417 3.4 -113,172 09/30/09 Schaepe (Christopher J) 777,876 3.3 -59,358 03/31/08 Arbor Capital Management, LLC (MN) 766,600 3.3 -76,300 09/30/09 Argyll Research, LLC 693,706 3.0 0 09/30/09

Ownership data based on most recent publicly available data according to Thomson Reuters.