As filed with the Securities and Exchange Commission on August 2, 1999 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 - AUGUST 2, 1999 Commission Registrant, State of Incorporation I.R.S. Employer File Number Address and Telephone Number Identification No. - ----------- ------------------------------------- ------------------ 0-25595 NIAGARA MOHAWK HOLDINGS, INC 16-1549726 (a New York corporation) 300 Erie Boulevard West Syracuse, New York 13202 Telephone (315) 474-1511 1-2987 NIAGARA MOHAWK POWER CORPORATION. 15-0265555 (a New York corporation) 300 Erie Boulevard West Syracuse, New York 13202 Telephone (315) 474-1511 Item 5. Other Events - --------------------- (a) On July 29, 1999, Niagara Mohawk Holdings, Inc. issued a press release relating to its second quarter earnings for 1999. See attached Exhibit No. 99-1. (b) On July 29, 1999, Niagara Mohawk Holdings, Inc. issued a press release relating to program to repurchase common stock and redeem $520 million debt. See attached Exhibit No. 99-2. (c) On August 2, 1999, Niagara Mohawk Power Corporation issued a press release relating to the closing of the sale of its hydro generating assets . See attached Exhibit No. 99-3. Item 7. Financial Statements and Exhibits - ------------------------------------------ (c) Exhibits - Following is the list of Exhibits furnished in accordance with the provisions of Item 601 of Regulation S-K, filed as part of this current report on Form 8-K. Exhibit No. 99-1 - Press release of Niagara Mohawk Holdings, Inc. issued on July 29, 1999 relating to its second quarter earnings for 1999. Exhibit No. 99-2 - Press release of Niagara Mohawk Holdings, Inc. issued on July 29, 1999 relating to program to repurchase common stock and redeem $520 million debt. Exhibit No. 99-3 - Press release of Niagara Mohawk Power Corporation issued on August 2, 1999 relating to the closing of the sale of its hydro generating assets. NIAGARA MOHAWK HOLDINGS, INC. AND SUBSIDIARY COMPANIES SIGNATURE --------- 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 thereunto duly authorized. NIAGARA MOHAWK HOLDINGS, INC. ----------------------------- (Registrant) Date: August 2, 1999 By /s/Steven W. Tasker ---------------------------- Steven W. Tasker Vice President-Controller and Principal Accounting Officer, in his respective capacities as such NIAGARA MOHAWK POWER CORPORATION -------------------------------- (Registrant) Date: August 2, 1999 By /s/Steven W. Tasker --------------------------- Steven W. Tasker Vice President-Controller and Principal Accounting Officer, in his respective capacities as such EXHIBIT INDEX ------------- Following is the index of Exhibits furnished in accordance with the provisions of Item 601 of Regulation S-K, filed as part of this current report on Form 8-K. Exhibit No. 99-1 - Press release of Niagara Mohawk Holdings, Inc. issued on July 29, 1999 relating to its second quarter earnings for 1999. Exhibit No. 99-2 - Press release of Niagara Mohawk Holdings, Inc. issued on July 29, 1999 relating to program to repurchase common stock and redeem $520 million debt. Exhibit No. 99-3 - Press release of Niagara Mohawk Power Corporation issued on August 2, 1999 relating to the closing of the sale of its hydro generating assets.