0000950149-97-001255 8-K 2 19970605 5 7 19970617 NYSE CALPINE CORP 0000916457 4991 770031605 CA 1231 8-K 34 001-12079 97625019 50 WEST SAN FERNANDO ST SAN JOSE CA 95113 4089955115 50 W SAN FERNANDO SUITE 500 SAN JOSE CA 95113 8-K 1 000095014997001255-001-seq1-8-k.txt CURRENT REPORT ON FORM 8-K DATED JUNE 5, 1997 EX-4 2 000095014997001255-002-seq2-ex-4.txt RIGHTS AGREEMENT