0001181431-08-056329 4 1 20081002 20081006 20081006 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 SCULLY JOHN H 0001202553 4 34 001-12079 081110956 591 REDWOOD HIGHWAY SUITE 3215 MILL VALLEY CA 94941 PATTERSON WILLIAM J 0001202551 4 34 001-12079 081110958 591 REDWOOD HIGHWAY SUITE 3215 MILL VALLEY CA 94941 MCDERMOTT EDWARD H 0001252464 4 34 001-12079 081110959 591 REDWOOD HIGHWAY STE 3215 MILL VALLEY CA 94941 RYAN J. STUART 0001425020 4 34 001-12079 081110960 713-830-2000 717 TEXAS AVENUE HOUSTON TX 77002 Elizabeth R. & William J. Patterson Foundation 0001391548 CA 1231 4 34 001-12079 081110961 591 REDWOOD HIGHWAY SUITE 3215 MILL VALLEY CA 94941 415-384-2275 591 REDWOOD HIGHWAY SUITE 3215 MILL VALLEY CA 94941 PHOEBE SNOW FOUNDATION 0001252480 DE 1231 4 34 001-12079 081110962 591 REDWOOD HIGHWAY STE 3215 MILL VALLEY CA 94941 SPO ADVISORY CORP 0000919468 DE 1231 4 34 001-12079 081110963 591 REDWOOD HIGHWAY SUITE 3215 MILL VALLEY CA 94941 4153836600 SF ADVISORY CORP 19990329 OBERNDORF WILLIAM E 0001218663 4 34 001-12079 081110957 4153836600 SPO PARTNERS & CO 591 REDWOOD HWY STE 3215 MILL VALLEY CA 94941 4 1 rrd220464.xml STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES