X0303 4 2011-05-31 0 0001005010 ARTHROCARE CORP ARTC 0001283063 DAHLBORG STEN I 7500 RIALTO BLVD BUILDING TWO, SUITE 100 AUSTIN TX 78735 0 1 0 0 President, International Common Stock 2011-05-31 4 D 0 184 0.001 D 34909 D Common Stock 2011-05-31 4 D 0 10932 0.001 D 23977 D Common Stock 2011-05-31 4 D 0 18000 0.001 D 5977 D Common Stock 2011-06-01 4 M 0 8200 13.05 A 14177 D Common Stock 2011-06-01 4 S 0 8200 34.1085 D 5977 D Common Stock 2011-06-01 4 X 0 150 9.88 A 6127 D Common Stock 2011-06-01 4 S 0 150 34.1085 D 5977 D Common Stock 2011-06-01 4 X 0 5500 13.8 A 11477 D Common Stock 2011-06-01 4 S 0 5500 34.1085 D 5977 D Common Stock 2011-06-01 4 M 0 14700 24.38 A 20677 D Common Stock 2011-06-01 4 S 0 14700 34.1085 D 5977 D Non-Qualified Stock Option (right to buy) 9.88 2011-06-01 4 X 0 150 34.1085 D 2003-02-07 2013-01-07 Common Stock 150 0 D Non-Qualified Stock Option (right to buy) 13.05 2011-06-01 4 M 0 8200 34.1085 D 2002-09-10 2012-08-10 Common Stock 8200 0 D Non-Qualified Stock Option (right to buy) 13.8 2011-06-01 4 X 0 5500 34.1085 D 2003-08-24 2013-07-24 Common Stock 5500 0 D Non-Qualified Stock Option (right to buy) 24.38 2011-06-01 4 M 0 14700 34.1085 D 2004-04-10 2014-03-10 Common Stock 14700 300 D Sten Dahlborg 2011-06-03