| SC 13D/A | 2016-02-05 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 16,713,270 | 4.7% | EDGAR |
| SC 13G/A | 2016-01-26 | BlackRock Inc. | CALPINE CORP | 22,572,439 | 6.3% | EDGAR |
| SC 13G | 2015-12-10 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | CALPINE CORP | 37,778,193 | 10.6% | EDGAR |
| SC 13D/A | 2015-08-21 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 27,254,102 | 7.6% | EDGAR |
| SC 13D/A | 2015-04-10 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 24,749,530 | 6.6% | EDGAR |
| SC 13G/A | 2015-02-17 | Brahman Capital Corp. | CALPINE CORP | 26,648,241 | 6.8% | EDGAR |
| SC 13G/A | 2015-02-12 | RS INVESTMENT MANAGEMENT CO LLC | CALPINE CORP | 4,660,929 | 1.2% | EDGAR |
| SC 13G | 2015-02-10 | VANGUARD GROUP INC | CALPINE CORP | 24,285,951 | 6.2% | EDGAR |
| SC 13G | 2015-02-02 | BlackRock Inc. | CALPINE CORP | 24,314,460 | 6.2% | EDGAR |
| SC 13D/A | 2014-10-20 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 30,835,610 | 7.7% | EDGAR |
| SC 13G | 2014-10-02 | Brahman Capital Corp. | CALPINE CORP | 21,074,849 | 5.2% | EDGAR |
| SC 13D/A | 2014-07-10 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 27,985,610 | 6.6% | EDGAR |
| SC 13D/A | 2014-07-03 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 41,198,982 | 9.7% | EDGAR |
| SC 13D/A | 2014-04-22 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 41,198,982 | 9.7% | EDGAR |
| SC 13D/A | 2014-02-20 | SPO ADVISORY CORP | CALPINE CORP | 10,709,212 | 2.5% | EDGAR |
| SC 13G/A | 2014-02-14 | RS INVESTMENT MANAGEMENT CO LLC | CALPINE CORP | 24,248,424 | 5.6% | EDGAR |
| SC 13G/A | 2014-02-12 | PRICE T ROWE ASSOCIATES INC /MD/ | CALPINE CORP | 20,341,200 | 4.6% | EDGAR |
| SC 13D/A | 2013-09-12 | SPO ADVISORY CORP | CALPINE CORP | 29,189,712 | 6.6% | EDGAR |
| SC 13D/A | 2013-05-08 | SPO ADVISORY CORP | CALPINE CORP | 39,187,312 | 8.6% | EDGAR |
| SC 13D/A | 2013-04-18 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 43,097,851 | 9.5% | EDGAR |