Discovery Group I, Llc

Insider Trading: Purchases
Company Symbol Price Amount Relationship Remaining Holdings Date Form 4
ATRC $8.00 490 Large Shareholder 243,010 2010-11-15 Filing
ATRC $8.00 2,910 Large Shareholder 1,422,761 2010-11-15 Filing
ATRC $8.04 931 Large Shareholder 242,520 2010-11-12 Filing
ATRC $8.04 5,537 Large Shareholder 1,419,851 2010-11-12 Filing
ATRC $8.05 482 Large Shareholder 241,588 2010-11-11 Filing
ATRC $8.05 2,868 Large Shareholder 1,414,315 2010-11-11 Filing
ATRC $8.09 1,440 Large Shareholder 241,106 2010-11-10 Filing
ATRC $8.09 8,560 Large Shareholder 1,411,447 2010-11-10 Filing
ATRC $8.15 712 Large Shareholder 239,666 2010-11-09 Filing
ATRC $8.15 4,229 Large Shareholder 1,402,887 2010-11-09 Filing
ATRC $8.19 1,535 Large Shareholder 238,954 2010-11-08 Filing
ATRC $8.19 9,127 Large Shareholder 1,398,658 2010-11-08 Filing
ATRC $8.23 1,791 Large Shareholder 237,419 2010-11-05 Filing
ATRC $8.23 10,644 Large Shareholder 1,389,531 2010-11-05 Filing
ATRC $8.09 5,300 Large Shareholder 235,628 2010-11-02 Filing
ATRC $8.09 31,508 Large Shareholder 230,328 2010-11-02 Filing
ATRC $8.10 4,853 Large Shareholder 230,328 2010-11-01 Filing
ATRC $8.10 28,847 Large Shareholder 1,347,379 2010-11-01 Filing
TESS $10.98 600 Large Shareholder 99,222 2009-07-10 Filing
TESS $10.78 400 Large Shareholder 679,492 2009-07-07 Filing