| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13D/A | 2011-02-16 | ICAHN CARL C | MENTOR GRAPHICS CORP | - | - | EDGAR |
| SC 13D/A | 2011-02-14 | CASABLANCA CAPITAL LLC | MENTOR GRAPHICS CORP | 573,683 | - | EDGAR |
| SC 13D/A | 2011-02-11 | ICAHN CARL C | MENTOR GRAPHICS CORP | - | - | EDGAR |
| SC 13G/A | 2011-02-11 | AMERIPRISE FINANCIAL INC | MENTOR GRAPHICS CORP | 5,197,047 | 4.7% | EDGAR |
| SC 13D/A | 2011-02-08 | CASABLANCA CAPITAL LLC | MENTOR GRAPHICS CORP | 573,683 | - | EDGAR |
| SC 13D/A | 2011-02-08 | ICAHN CARL C | MENTOR GRAPHICS CORP | 3,224,057 | 2.9% | EDGAR |
| SC 13D/A | 2011-02-08 | ICAHN CARL C | MENTOR GRAPHICS CORP | - | - | EDGAR |
| SC 13G/A | 2011-02-07 | BlackRock Inc. | MENTOR GRAPHICS CORP | 9,213,701 | 8.4% | EDGAR |
| SC 13D | 2011-02-03 | CASABLANCA CAPITAL LLC | MENTOR GRAPHICS CORP | 573,683 | 0.5% | EDGAR |
| SC 13G/A | 2010-12-10 | FMR LLC | MENTOR GRAPHICS CORP | 1,076,584 | 1.0% | EDGAR |
| SC 13G/A | 2010-10-12 | AMERIPRISE FINANCIAL INC | MENTOR GRAPHICS CORP | 8,003,234 | 7.3% | EDGAR |
| SC 13D/A | 2010-08-24 | ICAHN CARL C | MENTOR GRAPHICS CORP | 3,200,777 | 3.0% | EDGAR |
| SC 13D/A | 2010-07-30 | ICAHN CARL C | MENTOR GRAPHICS CORP | 3,019,399 | 2.8% | EDGAR |
| SC 13D/A | 2010-07-22 | ICAHN CARL C | MENTOR GRAPHICS CORP | 2,792,715 | 2.6% | EDGAR |
| SC 13D/A | 2010-07-06 | ICAHN CARL C | MENTOR GRAPHICS CORP | 2,550,479 | 2.4% | EDGAR |
| SC 13D/A | 2010-06-30 | ICAHN CARL C | MENTOR GRAPHICS CORP | 2,316,479 | 2.2% | EDGAR |
| SC 13D/A | 2010-06-22 | ICAHN CARL C | MENTOR GRAPHICS CORP | 2,027,608 | 1.9% | EDGAR |
| SC 13D/A | 2010-06-11 | ICAHN CARL C | MENTOR GRAPHICS CORP | 1,703,305 | 1.6% | EDGAR |
| SC 13D | 2010-05-27 | ICAHN CARL C | MENTOR GRAPHICS CORP | 1,463,764 | 1.4% | EDGAR |
| SC 13G/A | 2010-05-10 | BlackRock Inc. | MENTOR GRAPHICS CORP | 10,069,484 | 10.0% | EDGAR |