| SC 13G/A | 2012-02-21 | PRICE T ROWE ASSOCIATES INC /MD/ | AMETEK INC/ | 11,601,465 | 7.2% | EDGAR |
| SC 13G/A | 2012-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | AMETEK INC/ | 11,601,465 | 7.2% | EDGAR |
| SC 13G/A | 2012-02-13 | BlackRock Inc. | AMETEK INC/ | 9,500,994 | 5.9% | EDGAR |
| SC 13G/A | 2012-02-10 | COLUMBIA WANGER ASSET MANAGEMENT LLC | AMETEK INC/ | 11,037,750 | 6.8% | EDGAR |
| SC 13G/A | 2011-02-14 | FMR LLC | AMETEK INC/ | 3,656,746 | 2.3% | EDGAR |
| SC 13G/A | 2011-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | AMETEK INC/ | 12,067,565 | 7.5% | EDGAR |
| SC 13G/A | 2011-02-10 | COLUMBIA WANGER ASSET MANAGEMENT LLC | AMETEK INC/ | 11,359,350 | 7.0% | EDGAR |
| SC 13G/A | 2011-02-03 | BlackRock Inc. | AMETEK INC/ | 9,486,855 | 5.9% | EDGAR |
| SC 13G | 2010-02-16 | FMR LLC | AMETEK INC/ | 5,447,259 | 5.1% | EDGAR |
| SC 13G/A | 2010-02-12 | PRICE T ROWE ASSOCIATES INC /MD/ | AMETEK INC/ | 8,033,750 | 7.4% | EDGAR |
| SC 13G/A | 2010-02-09 | COLUMBIA WANGER ASSET MANAGEMENT LP | AMETEK INC/ | 7,048,900 | 6.5% | EDGAR |
| SC 13G | 2010-01-29 | BlackRock Inc. | AMETEK INC/ | 7,195,211 | 6.7% | EDGAR |
| SC 13G/A | 2009-02-11 | PRICE T ROWE ASSOCIATES INC /MD/ | AMETEK INC/ | 7,915,600 | 7.4% | EDGAR |
| SC 13G/A | 2009-02-05 | COLUMBIA WANGER ASSET MANAGEMENT LP | AMETEK INC/ | 7,574,800 | 7.1% | EDGAR |
| SC 13G/A | 2008-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | AMETEK INC/ | 7,881,650 | 7.3% | EDGAR |
| SC 13G/A | 2008-01-24 | COLUMBIA WANGER ASSET MANAGEMENT LP | AMETEK INC/ | 7,283,000 | 6.8% | EDGAR |
| SC 13D/A | 2007-06-07 | GAMCO INVESTORS, INC. ET AL | AMETEK INC/ | 1,256,000 | 1.2% | EDGAR |
| SC 13G/A | 2007-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | AMETEK INC/ | 8,286,875 | 7.8% | EDGAR |
| SC 13G | 2007-01-11 | COLUMBIA WANGER ASSET MANAGEMENT LP | AMETEK INC/ | 7,095,100 | 6.7% | EDGAR |
| SC 13G | 2006-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | AMETEK INC/ | 4,561,100 | 6.4% | EDGAR |