Results of Operations and Financial Condition. On November 4, 2026, National Fuel Gas Company (the “Company”) issued a press release regarding its earnings for the quarter and fiscal year ended September 30, 2026. A copy of the press release is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the press release as an exhibit to this Current Report nor the inclusion in such press release of any reference to the Company’s internet address shall, under any circums…

Regulation FD Disclosure. On November 4, 2026, National Fuel Gas Company (the “Company”) updated its Investor Presentation. A copy of the presentation is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the presentation as an exhibit to this Current Report nor the inclusion in such presentation of any reference to the Company’s internet address shall, under any circumstances, be deemed to incorporate the information available at such internet address into this…

Other Events. On October 14, 2026, the Company announced that the Board of Directors approved a plan to separate the Company into two independent, publicly traded companies through a tax-free spin-off of the Company’s Integrated Upstream and Gathering business. The Company expects to complete the separation during the second half of calendar year 2027, subject to customary conditions, including the filing and effectiveness of applicable filings (including a Form 10 registration statement) wit…

Regulation FD Disclosure. On October 14, 2026, National Fuel Gas Company (the “Company”) issued a press release regarding its plan to separate the Company into two independent, publicly traded companies through a tax-free spin-off of the Company’s Integrated Upstream and Gathering business. A copy of the press release is furnished as part of this Current Report as Exhibit 99.1 and is incorporated herein by reference. On October 14, 2026, the Company provided an Investor Presentation regarding…

Entry into a Material Definitive Agreement. As previously disclosed, a portion of the Purchase Price was financed at Closing by the issuance of a $1.20 billion promissory note to the Seller pursuant to a Seller Note Agreement, dated as of October 1, 2026 (the “Seller Note Agreement”), between the Company, as borrower, and the Seller, as lender. The Seller Note Agreement establishes an unsecured term loan credit facility (the “Seller Note Facility”) that matures on September 30, 2027. The borr…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The disclosure set forth in

Completion of Acquisition or Disposition of Assets. As described above, on October 1, 2026, upon the terms set forth in the Purchase Agreement, the Transaction was completed. As a result of the Closing, CenterPoint Ohio became a wholly owned subsidiary of the Company. The Purchase Price was paid through a combination of $1.42 billion in cash and a $1.20 billion promissory note issued by the Company to the Seller pursuant to the Seller Note Agreement. The foregoing description of the Purchase…

Results of Operations and Financial Condition. On July 29, 2026, National Fuel Gas Company (the “Company”) issued a press release regarding its earnings for the quarter ended June 30, 2026. A copy of the press release is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the press release as an exhibit to this Current Report nor the inclusion in such press release of any reference to the Company’s internet address shall, under any circumstances, be deemed to inc…

Regulation FD Disclosure. On July 29, 2026, National Fuel Gas Company (the “Company”) updated its Investor Presentation. A copy of the presentation is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the presentation as an exhibit to this Current Report nor the inclusion in such presentation of any reference to the Company’s internet address shall, under any circumstances, be deemed to incorporate the information available at such internet address into this Cu…

Other Events. As previously disclosed, on October 20, 2025, National Fuel Gas Company (the “Company”) entered into a Securities Purchase Agreement (the “Purchase Agreement”) with CenterPoint Energy Resources Corp. (the “Seller”), pursuant to which, among other things, the Company agreed to acquire from the Seller all of the issued and outstanding equity interests of Vectren Energy Delivery of Ohio, LLC, the Seller’s Ohio natural gas local distribution company business, for an aggregate purcha…

Other Events. CenterPoint Acquisition As previously disclosed, on October 20, 2025, National Fuel Gas Company (the “Company”) entered into a Securities Purchase Agreement (the “Purchase Agreement”) with CenterPoint Energy Resources Corp. (the “Seller”), pursuant to which, among other things, the Company agreed to acquire from the Seller all of the issued and outstanding equity interests of Vectren Energy Delivery of Ohio, LLC (“CenterPoint Ohio”), the Seller’s Ohio natural gas local distribut…

Results of Operations and Financial Condition. On April 29, 2026, National Fuel Gas Company (the “Company”) issued a press release regarding its earnings for the quarter and six months ended March 31, 2026. A copy of the press release is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the press release as an exhibit to this Current Report nor the inclusion in such press release of any reference to the Company’s internet address shall, under any circumstances,…

Regulation FD Disclosure. On April 29, 2026, National Fuel Gas Company (the “Company”) updated its Investor Presentation. A copy of the presentation is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the presentation as an exhibit to this Current Report nor the inclusion in such presentation of any reference to the Company’s internet address shall, under any circumstances, be deemed to incorporate the information available at such internet address into this C…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information described in

Entry Into a Material Definitive Agreement. Amended and Restated Credit Agreement On March 27, 2026, National Fuel Gas Company (the “ Company ”) entered into an Amended and Restated Credit Agreement (the “ Credit Agreement ”), with PNC Bank, National Association, as administrative agent, and the following lenders: PNC Bank, National Association; Bank of America, N.A.; JPMorgan Chase Bank, N. A.; The Toronto-Dominion Bank, New York Branch; Wells Fargo Bank, National Association; Canadian Imper…

Results of Operations and Financial Condition. On January 28, 2026, National Fuel Gas Company (the “Company”) issued a press release regarding its earnings for the quarter ended December 31, 2025. A copy of the press release is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the press release as an exhibit to this Current Report nor the inclusion in such press release of any reference to the Company’s internet address shall, under any circumstances, be deemed…

Regulation FD Disclosure. On January 28, 2026, National Fuel Gas Company (the “Company”) updated its Investor Presentation. A copy of the presentation is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the presentation as an exhibit to this Current Report nor the inclusion in such presentation of any reference to the Company’s internet address shall, under any circumstances, be deemed to incorporate the information available at such internet address into this…

Other Events. On December 29, 2025, National Fuel Gas Company (the “Company”) filed a prospectus supplement (“Prospectus Supplement”) to its effective shelf registration statement on Form S-3 (Reg. No. 333-273926) filed with the Securities and Exchange Commission (the “Commission”) on August 11, 2023. The Company filed the Prospectus Supplement for the purpose of registering for resale up to 4,402,513 shares of the Company’s common stock, par value $1.00 per share (the “Common Stock”), by the…

Entry into a Material Definitive Agreement. On December 12, 2025, National Fuel Gas Company (the “Company”) entered into a common stock subscription agreement (the “Subscription Agreement”) with certain investors (the “Investors”) pursuant to which the Company agreed to sell to the Investors, in a private placement, shares of common stock (the “Offering”). Upon closing of the Offering, the Company expects to receive gross proceeds of $350 million, before deducting fees and expenses, resulting…

Regulation FD Disclosure. On December 15, 2025, the Company issued a press release regarding the Offering. A copy of the press release is furnished as part of this Current Report as Exhibit 99.1. Neither the furnishing of the press release as an exhibit to this Current Report nor the inclusion in the press release of any reference to the Company’s internet address shall, under any circumstances, be deemed to incorporate the information available at such internet address into this Current Repo…

The shares of common stock being sold pursuant to the Subscription Agreement are being sold and issued without registration under the Securities Act, in reliance on the exemptions provided by Section 4(a)(2) of the Securities Act as a transaction not involving a public offering and Rule 506 promulgated thereunder, and in reliance on similar exemptions under applicable state laws.

The filing describes the granting of long-term incentive compensation (performance shares and RSUs) to existing officers, which is a routine administrative matter rather than a change in management personnel.

Entry into a Material Definitive Agreement. As previously announced, on October 20, 2025, National Fuel Gas Company (the “Company”) entered into a Securities Purchase Agreement (the “Purchase Agreement”) with CenterPoint Energy Resources Corp. (the “Seller”), pursuant to which, among other things, the Company agreed to acquire from the Seller all of the issued and outstanding equity interests of Vectren Energy Delivery of Ohio, LLC, the Seller’s Ohio natural gas local distribution company bus…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information described in

Results of Operations and Financial Condition. On November 5, 2025, National Fuel Gas Company (the “Company”) issued a press release regarding its earnings for the quarter and fiscal year ended September 30, 2025. A copy of the press release is furnished as part of this Current Report as Exhibit 99. Neither the furnishing of the press release as an exhibit to this Current Report nor the inclusion in such press release of any reference to the Company’s internet address shall, under any circums…