| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | MENTOR GRAPHICS CORP | 8,554,729 | 7.8% | EDGAR |
| SC 13G/A | 2017-01-25 | BlackRock Inc. | MENTOR GRAPHICS CORP | 10,827,173 | 9.9% | EDGAR |
| SC 13D/A | 2016-11-15 | ELLIOTT ASSOCIATES, L.P. | MENTOR GRAPHICS CORP | 1,544,000 | 1.4% | EDGAR |
| SC 13D/A | 2016-11-14 | ELLIOTT ASSOCIATES, L.P. | MENTOR GRAPHICS CORP | 1,544,000 | 1.4% | EDGAR |
| SC 13G/A | 2016-11-09 | BlackRock Inc. | MENTOR GRAPHICS CORP | 10,910,289 | 10.1% | EDGAR |
| SC 13D | 2016-09-29 | ELLIOTT ASSOCIATES, L.P. | MENTOR GRAPHICS CORP | 1,544,000 | 1.4% | EDGAR |
| SC 13G/A | 2016-04-11 | VICTORY CAPITAL MANAGEMENT INC | MENTOR GRAPHICS CORP | 3,730,812 | 3.5% | EDGAR |
| SC 13D/A | 2016-03-08 | ICAHN CARL C | MENTOR GRAPHICS CORP | 1,097,805 | 0.9% | EDGAR |
| SC 13D/A | 2016-03-04 | ICAHN CARL C | MENTOR GRAPHICS CORP | 1,270,567 | 1.1% | EDGAR |
| SC 13D/A | 2016-02-19 | ICAHN CARL C | MENTOR GRAPHICS CORP | 1,612,028 | 1.4% | EDGAR |
| SC 13G/A | 2016-02-12 | Allianz Global Investors U.S. Holdings LLC | MENTOR GRAPHICS CORP | 2,888,333 | 2.5% | EDGAR |
| SC 13G | 2016-02-12 | VICTORY CAPITAL MANAGEMENT INC | MENTOR GRAPHICS CORP | 7,323,078 | 6.2% | EDGAR |
| SC 13G/A | 2016-02-10 | BlackRock Inc. | MENTOR GRAPHICS CORP | 9,443,483 | 8.0% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | MENTOR GRAPHICS CORP | 7,692,680 | 6.5% | EDGAR |
| SC 13G/A | 2015-02-13 | Allianz Global Investors U.S. Holdings LLC | MENTOR GRAPHICS CORP | 5,767,547 | 5.0% | EDGAR |
| SC 13G/A | 2015-02-11 | VANGUARD GROUP INC | MENTOR GRAPHICS CORP | 6,007,623 | 5.2% | EDGAR |
| SC 13G/A | 2015-01-26 | BlackRock Inc. | MENTOR GRAPHICS CORP | 8,971,817 | 7.8% | EDGAR |
| SC 13G/A | 2014-02-14 | FMR LLC | MENTOR GRAPHICS CORP | 5,024,235 | 4.4% | EDGAR |
| SC 13G | 2014-02-12 | MUNDER CAPITAL MANAGEMENT | MENTOR GRAPHICS CORP | 5,695,142 | 4.9% | EDGAR |
| SC 13G | 2014-02-12 | Allianz Global Investors U.S. Holdings LLC | MENTOR GRAPHICS CORP | 6,131,550 | 5.4% | EDGAR |