0000950149-97-001256 8-A12G 2 19970617 NYSE CALPINE CORP 0000916457 4991 770031605 CA 1231 8-A12G 34 000-22709 97625020 50 WEST SAN FERNANDO ST SAN JOSE CA 95113 4089955115 50 W SAN FERNANDO SUITE 500 SAN JOSE CA 95113 8-A12G 1 000095014997001256-001-seq1-8-a12g.txt FORM 8-A EX-4 2 000095014997001256-002-seq2-ex-4.txt RIGHTS AGREEMENT