| SC 13G | 2013-02-15 | RS INVESTMENT MANAGEMENT CO LLC | CALPINE CORP | - | 6.4% | EDGAR |
| SC 13G/A | 2013-02-07 | PRICE T ROWE ASSOCIATES INC /MD/ | CALPINE CORP | 38,919,030 | 8.3% | EDGAR |
| SC 13D/A | 2012-09-07 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 54,547,851 | 11.7% | EDGAR |
| SC 13D/A | 2012-05-23 | SPO ADVISORY CORP | CALPINE CORP | 53,729,212 | 11.1% | EDGAR |
| SC 13D/A | 2012-02-13 | SPO ADVISORY CORP | CALPINE CORP | 70,541,012 | 14.7% | EDGAR |
| SC 13G/A | 2012-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | CALPINE CORP | 38,148,680 | 7.8% | EDGAR |
| SC 13D/A | 2011-08-22 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 70,999,263 | 15.5% | EDGAR |
| SC 13G/A | 2011-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | CALPINE CORP | 38,631,100 | 8.6% | EDGAR |
| SC 13D/A | 2011-01-06 | SPO ADVISORY CORP | CALPINE CORP | 85,541,939 | 19.2% | EDGAR |
| SC 13D/A | 2010-03-05 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 6,700,000 | 1.5% | EDGAR |
| SC 13G | 2010-02-11 | PRICE T ROWE ASSOCIATES INC /MD/ | CALPINE CORP | 28,535,500 | 6.4% | EDGAR |
| SC 13D/A | 2010-01-14 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 20,000,000 | 4.5% | EDGAR |
| SC 13D/A | 2009-12-10 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 32,810,270 | 7.4% | EDGAR |
| SC 13D/A | 2009-10-16 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 39,783,136 | 9.0% | EDGAR |
| SC 13D/A | 2009-09-29 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 41,783,136 | 9.4% | EDGAR |
| SC 13D/A | 2009-09-23 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 55,116,470 | 12.5% | EDGAR |
| SC 13D/A | 2009-04-30 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 53,407,165 | 12.5% | EDGAR |
| SC 13D/A | 2009-04-24 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 73,407,165 | 17.1% | EDGAR |
| SC 13D/A | 2009-03-26 | LUMINUS MANAGEMENT LLC | CALPINE CORP | 70,871,937 | 16.5% | EDGAR |
| SC 13D/A | 2009-03-06 | HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. | CALPINE CORP | 73,407,165 | 17.1% | EDGAR |