| SC 13G | 2011-02-04 | BlackRock Inc. | IDEXX LABORATORIES INC /DE | 2,881,468 | 5.0% | EDGAR |
| SC 13G/A | 2010-02-17 | RUANE, CUNNIFF & GOLDFARB INC | IDEXX LABORATORIES INC /DE | 12,910,784 | 22.0% | EDGAR |
| SC 13G/A | 2010-02-17 | Neuberger Berman Group LLC | IDEXX LABORATORIES INC /DE | 3,373,162 | 5.8% | EDGAR |
| SC 13G/A | 2010-02-04 | BAMCO INC /NY/ | IDEXX LABORATORIES INC /DE | 3,865,100 | 6.7% | EDGAR |
| SC 13G/A | 2010-02-04 | BLAIR WILLIAM & CO/IL | IDEXX LABORATORIES INC /DE | 3,075,148 | 5.2% | EDGAR |
| SC 13G | 2009-06-11 | Neuberger Berman Group LLC | IDEXX LABORATORIES INC /DE | 3,642,125 | 6.2% | EDGAR |
| SC 13G/A | 2009-02-13 | RUANE, CUNNIFF & GOLDFARB INC | IDEXX LABORATORIES INC /DE | 13,294,045 | 22.3% | EDGAR |
| SC 13G/A | 2009-02-12 | NEUBERGER BERMAN INC | IDEXX LABORATORIES INC /DE | 3,988,870 | 6.7% | EDGAR |
| SC 13G | 2009-02-12 | BAMCO INC /NY/ | IDEXX LABORATORIES INC /DE | 3,478,505 | 5.8% | EDGAR |
| SC 13G | 2009-01-12 | BLAIR WILLIAM & CO/IL | IDEXX LABORATORIES INC /DE | 4,119,046 | 6.9% | EDGAR |
| SC 13G/A | 2008-11-10 | RUANE, CUNNIFF & GOLDFARB INC | IDEXX LABORATORIES INC /DE | 12,343,440 | 20.7% | EDGAR |
| SC 13G/A | 2008-02-14 | RUANE, CUNNIFF & GOLDFARB INC | IDEXX LABORATORIES INC /DE | 8,972,438 | 14.7% | EDGAR |
| SC 13G/A | 2008-02-13 | CAPITAL RESEARCH & MANAGEMENT CO | IDEXX LABORATORIES INC /DE | - | 0.0% | EDGAR |
| SC 13G/A | 2008-02-12 | NEUBERGER BERMAN INC | IDEXX LABORATORIES INC /DE | 4,236,322 | 6.9% | EDGAR |
| SC 13G | 2007-02-14 | RUANE, CUNNIFF & GOLDFARB INC | IDEXX LABORATORIES INC /DE | 4,688,996 | 15.0% | EDGAR |
| SC 13G/A | 2007-02-13 | NEUBERGER BERMAN INC | IDEXX LABORATORIES INC /DE | 2,528,984 | 8.1% | EDGAR |
| SC 13G/A | 2007-02-12 | CAPITAL RESEARCH & MANAGEMENT CO | IDEXX LABORATORIES INC /DE | 1,570,000 | 5.0% | EDGAR |
| SC 13G/A | 2006-02-21 | NEUBERGER BERMAN INC | IDEXX LABORATORIES INC /DE | 3,466,144 | 10.8% | EDGAR |
| SC 13G/A | 2006-02-15 | SELECT EQUITY GROUP INC | IDEXX LABORATORIES INC /DE | 1,416,836 | 4.4% | EDGAR |
| SC 13G/A | 2006-02-14 | NEUBERGER BERMAN INC | IDEXX LABORATORIES INC /DE | 3,466,144 | 10.8% | EDGAR |