| SC 13G/A | 2019-02-11 | VANGUARD GROUP INC | KLA TENCOR CORP | 18,154,377 | 11.8% | EDGAR |
| SC 13G/A | 2019-02-08 | PRIMECAP MANAGEMENT CO/CA/ | KLA TENCOR CORP | 12,244,761 | 8.0% | EDGAR |
| SC 13G/A | 2019-02-06 | BlackRock Inc. | KLA TENCOR CORP | 11,236,759 | 7.3% | EDGAR |
| SC 13G/A | 2018-02-27 | PRIMECAP MANAGEMENT CO/CA/ | KLA TENCOR CORP | 12,530,456 | 8.0% | EDGAR |
| SC 13G/A | 2018-02-08 | BlackRock Inc. | KLA TENCOR CORP | 11,446,967 | 7.3% | EDGAR |
| SC 13G/A | 2018-02-08 | VANGUARD GROUP INC | KLA TENCOR CORP | 17,352,774 | 11.1% | EDGAR |
| SC 13G | 2018-02-08 | WELLINGTON MANAGEMENT GROUP LLP | KLA TENCOR CORP | 8,978,330 | 5.7% | EDGAR |
| SC 13G/A | 2017-11-07 | JPMORGAN CHASE & CO | KLA TENCOR CORP | 6,191,475 | 3.9% | EDGAR |
| SC 13G/A | 2017-02-09 | PRIMECAP MANAGEMENT CO/CA/ | KLA TENCOR CORP | 14,008,696 | 9.0% | EDGAR |
| SC 13G/A | 2017-01-25 | BlackRock Inc. | KLA TENCOR CORP | 11,137,269 | 7.1% | EDGAR |
| SC 13G/A | 2017-01-19 | JPMORGAN CHASE & CO | KLA TENCOR CORP | - | - | EDGAR |
| SC 13G/A | 2017-01-10 | VANGUARD GROUP INC | KLA TENCOR CORP | 15,996,110 | 10.2% | EDGAR |
| SC 13G/A | 2016-08-10 | Capital World Investors | KLA TENCOR CORP | 1,292,140 | 0.8% | EDGAR |
| SC 13G/A | 2016-02-22 | STATE STREET CORP | KLA TENCOR CORP | - | 4.0% | EDGAR |
| SC 13G/A | 2016-02-12 | PRIMECAP MANAGEMENT CO/CA/ | KLA TENCOR CORP | 12,235,143 | 7.8% | EDGAR |
| SC 13G/A | 2016-02-12 | Capital World Investors | KLA TENCOR CORP | 10,072,430 | 6.5% | EDGAR |
| SC 13G/A | 2016-02-10 | BlackRock Inc. | KLA TENCOR CORP | 9,401,200 | 6.0% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | KLA TENCOR CORP | 13,686,140 | 8.8% | EDGAR |
| SC 13G/A | 2016-01-19 | JPMORGAN CHASE & CO | KLA TENCOR CORP | - | - | EDGAR |
| SC 13G/A | 2015-12-10 | Capital Research Global Investors | KLA TENCOR CORP | 2,010,000 | 1.3% | EDGAR |