| SC 13G | 2013-05-10 | SHAPIRO CAPITAL MANAGEMENT CO INC | CABOT MICROELECTRONICS CORP | 0 | 0.0% | EDGAR |
| SC 13G/A | 2013-02-13 | EARNEST PARTNERS LLC | CABOT MICROELECTRONICS CORP | 1,744,382 | 7.5% | EDGAR |
| SC 13G | 2013-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | CABOT MICROELECTRONICS CORP | 1,314,583 | 5.6% | EDGAR |
| SC 13G/A | 2013-02-11 | VANGUARD GROUP INC | CABOT MICROELECTRONICS CORP | 1,401,618 | 6.0% | EDGAR |
| SC 13G | 2013-02-11 | SHAPIRO CAPITAL MANAGEMENT CO INC | CABOT MICROELECTRONICS CORP | 0 | 0.0% | EDGAR |
| SC 13G/A | 2013-02-08 | BlackRock Inc. | CABOT MICROELECTRONICS CORP | 1,732,368 | 7.5% | EDGAR |
| SC 13G | 2013-02-06 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | CABOT MICROELECTRONICS CORP | 1,623,856 | 6.8% | EDGAR |
| SC 13G | 2013-02-04 | RIVERBRIDGE PARTNERS LLC | CABOT MICROELECTRONICS CORP | 1,185,529 | 5.1% | EDGAR |
| SC 13G/A | 2013-01-04 | ROYCE & ASSOCIATES LLC | CABOT MICROELECTRONICS CORP | 3,109,941 | 13.3% | EDGAR |
| SC 13G | 2012-03-09 | SHAPIRO CAPITAL MANAGEMENT CO INC | CABOT MICROELECTRONICS CORP | 0 | 0.0% | EDGAR |
| SC 13G/A | 2012-02-13 | BlackRock Inc. | CABOT MICROELECTRONICS CORP | 1,776,690 | 7.8% | EDGAR |
| SC 13G | 2012-02-13 | EARNEST PARTNERS LLC | CABOT MICROELECTRONICS CORP | 1,584,086 | 6.8% | EDGAR |
| SC 13G/A | 2012-02-09 | SNYDER CAPITAL MANAGEMENT L P | CABOT MICROELECTRONICS CORP | 969,766 | 4.3% | EDGAR |
| SC 13G | 2012-02-09 | VANGUARD GROUP INC | CABOT MICROELECTRONICS CORP | 1,247,928 | 5.4% | EDGAR |
| SC 13G | 2012-02-03 | SHAPIRO CAPITAL MANAGEMENT CO INC | CABOT MICROELECTRONICS CORP | 0 | 0.0% | EDGAR |
| SC 13G/A | 2012-01-20 | KORNITZER CAPITAL MANAGEMENT INC /KS | CABOT MICROELECTRONICS CORP | 971,987 | 4.2% | EDGAR |
| SC 13G/A | 2012-01-09 | ROYCE & ASSOCIATES LLC | CABOT MICROELECTRONICS CORP | 2,967,476 | 12.9% | EDGAR |
| SC 13G/A | 2011-11-10 | LORD ABBETT & CO LLC | CABOT MICROELECTRONICS CORP | 1,112,276 | 4.8% | EDGAR |
| SC 13G | 2011-09-12 | SHAPIRO CAPITAL MANAGEMENT CO INC | CABOT MICROELECTRONICS CORP | 0 | 0.0% | EDGAR |
| SC 13G/A | 2011-02-14 | SNYDER CAPITAL MANAGEMENT L P | CABOT MICROELECTRONICS CORP | 1,275,751 | 5.5% | EDGAR |