ARTHROCARE CORP

CUSIP: 043136100 Class: CMN

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

Note: Option positions (PUT/CALL) are excluded.

Q1 2014
Shares 465,656 Value ($000) $22,440 Avg Close — Range —
Q4 2013
Shares 325,300 Value ($000) $13,090 Avg Close — Range —
Q3 2013
Shares 334,000 Value ($000) $11,884 Avg Close — Range —
Q2 2013
Shares 334,600 Value ($000) $11,554 Avg Close — Range —