0000950131-00-002817 8-K 4 20000424 5 7 20000426 ONEOK INC /NEW/ 0001039684 4923 731520922 OK 1231 8-K 34 001-13643 609455 100 WEST 5TH ST TULSA OK 74103 9185887000 100 WEST 5TH ST TULSA OK 74103 WAI INC 19970519 8-K 1 000095013100002817-001-seq1-8-k.txt FORM 8-K EX-1.A 2 000095013100002817-002-seq2-ex-1-a.txt UNDERWRITING AGREEMENT EX-1.B 3 000095013100002817-003-seq3-ex-1-b.txt PRICE DETERMINATION AGREEMENT EX-4 4 000095013100002817-004-seq4-ex-4.txt SEVENTH SUPPLEMENTAL INDENTURE