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…

Regulation FD Disclosure. On November 5, 2025, 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…

Entry into a Material Definitive Agreement. Securities Purchase Agreement 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 “Acquired Company”), the Seller’s Ohio natural gas…

Regulation FD Disclosure. On October 21, 2025, the Company issued a press release regarding the Transaction and posted an investor presentation regarding the Transaction under the investor relations section on its internet address. Copies of the press release and investor presentation are furnished as part of this Current Report as Exhibit 99.1 and Exhibit 99.2, respectively. Neither the furnishing of this press release or this investor presentation as an exhibit to this Current Report nor th…

Results of Operations and Financial Condition. On July 30, 2025, National Fuel Gas Company (the “Company”) issued a press release regarding its earnings for the quarter and nine months ended June 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 circumstances,…

Regulation FD Disclosure. On July 30, 2025, 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…

President — Donna L. DeCarolis: The President of a wholly-owned subsidiary is retiring with a named successor and a structured consulting transition, indicating an orderly succession rather than a sudden loss of leadership.

Results of Operations and Financial Condition. On April 30, 2025, National Fuel Gas Company (the “Company”) issued a press release regarding its earnings for the quarter and six months ended March 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,…