UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 23, 1999 UtiliCorp United Inc. Delaware 44-0541877 UCU Capital Trust I Delaware Applied For (Exact name of each (State or Other Jurisdiction (IRS Employer registrant as specified of Incorporation) Identification Nos.) in its charter) 1-3562 0-27413 (Commission File Number (Commission File Number for UtiliCorp United Inc.) for UCU Capital Trust I) 20 West 9th, Kansas City, Missouri 64105 (Address of principal executive offices) (Zip Code) (816) 421-6600 (Registrants' telephone number including area code) Not Applicable (Former name of former address, if changed since last report) ITEM 5. OTHER EVENTS UtiliCorp United Inc., a Delaware corporation ("UtiliCorp"), and UCU Capital Trust I, a Delaware statutory business trust (the "Trust"), are hereby filing the documents listed under Item 7 below, which documents shall amend and supplement the applicable documents filed as Exhibits to UtiliCorp's and the Trust's Registration Statement on Form S-3, File Nos. 333-86299 and 333-86299-01, respectively. ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS. Exhibits 4(d)(3) - Form of Supplemental Indenture 4(h) - Form of Guarantee Agreement to be delivered by UtiliCorp United Inc. 4(k) - Form of Amended and Restated Declaration of Trust of UCU Capital Trust I 4(l) - Form of Preferred Security (included as Exhibit A to the Form of Amended and Restated Declaration of Trust to be filed as Exhibit 4(k)). 4(m) - Form of Purchase Contract Agreement 4(n) - Form of Pledge Agreement 4(o) - Certificate of Amendment of the Certificate of Trust of UCU Capital Trust I SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned hereunto duly authorized. UtiliCorp United Inc. By: /s/ Dale J. Wolf Name: Dale J. Wolf Vice President, Finance, Treasurer and Corporate Secretary UCU Capital Trust I By: /s/ Dale J. Wolf Name: Dale J. Wolf Title: Regular Trustee (Duly authorized representative) Date: September 23, 1999