0001181431-08-056703 4 1 20081006 20081008 20081008 CALPINE CORP 0000916457 4911 770212977 DE 1231 50 WEST SAN FERNANDO ST SAN JOSE CA 95113 4089955115 50 W SAN FERNANDO SUITE 500 SAN JOSE CA 95113 SAN FRANCISCO PARTNERS II LP 0001252458 DE 1231 4 34 001-12079 081115140 591 REDWOOD HIGHWAY STE 3215 MILL VALLEY CA 94941 SPO Partners II Co Investment Partnership LP 0001398581 4 34 001-12079 081115141 591 Redwood Highway Ste 3215 Mill Valley CA 94941 4153836600 591 Redwood Highway Ste 3215 Mill Valley CA 94941 SPO PARTNERS II LP 0001046206 DE 1231 4 34 001-12079 081115142 591 REDWOOD HIGHWAY STE 3215 MILL VALLEY CA 94941 4153836600 591 REDWOOD HIGHWAY, 3215 MILL VALLEY CA 94941 MAIN STREET PARTNERS LP 19970916 SF ADVISORY PARTNERS LP 0000948279 DE 1231 4 34 001-12079 081115143 591 REDWOOD HWY STE 3215 MILL VALLEY CA 94941 591 REDWOOD HIGHWAY STE 3215 C/O SPO PARTNERS & CO MILL VALLEY CA 94941 SPO ADVISORY PARTNERS LP 0001252456 DE 1231 4 34 001-12079 081115144 591 REDWOOD HIGHWAY STE 3215 MILL VALLEY CA 94941 SPO ADVISORY CORP 0000919468 DE 1231 4 34 001-12079 081115145 591 REDWOOD HIGHWAY SUITE 3215 MILL VALLEY CA 94941 4153836600 SF ADVISORY CORP 19990329 4 1 rrd220672.xml STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES