Official announcements (8-K)

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsIn connection with the commencement of an equity offering program under which shares (the “Shares”) of the common stock of OGE Energy Corp. (NYSE: OGE) (the “Company”) having an aggregate sales price of up to $750,000,000 may be offered and sold from time to time (the “Offering”), the Company filed today with the Securities and Exchange Commission (the “SEC”) a prospectus supplement dated October 28, 2026 (the “Prospectus Supplement”). The Shares may be offered and sold in amounts and at times to be determined by the Company from time to time, but the Company has no obligation to offer and sell any of the Shares in the Offering. Actual sales will depend on a variety of …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's words("OGE Energy") is the parent company of Oklahoma Gas and Electric Company ("OG&E"), a regulated electric company with approximately 919,000 customers in Oklahoma and western Arkansas. On October 28, 2026, OGE Energy issued a press release announcing its consolidated financial results for the quarter ended September 30, 2026. A copy of such press release is furnished as Exhibit 99.01 and incorporated by reference herein.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's words("OGE Energy") is the parent company of Oklahoma Gas and Electric Company ("OG&E"), a regulated electric company with approximately 917,000 customers in Oklahoma and western Arkansas. On October 5, 2026, OG&E’s Board of Directors named John Laws as Chief Operating Officer (“COO”) of OG&E, effective January 4, 2027. Mr. Laws, 52, has served as Chief Commercial Officer of OG&E since January 2026. Prior to that, Mr. Laws was Secretary of Budget and State Chief Financial Officer for the State of Oklahoma from October 2022 to December 2024 and Executive Vice President, Chief Financial Officer and Treasurer of Enable Midstream Partners from January 2016 to December 2021. Mr. …

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's words("OGE Energy") is the parent company of Oklahoma Gas and Electric Company, a regulated electric company with approximately 917,000 customers in Oklahoma and western Arkansas. On July 28, 2026, OGE Energy's Board of Directors elected a new director, Richard (Rick) E. Muncrief, effective August 1, 2026. Mr. Muncrief’s term will expire at OGE Energy's Annual Meeting of Shareholders scheduled for May 13, 2027, at which time he is expected to be nominated for approval by OGE Energy's shareholders. Mr. Muncrief will serve on the Nominating, Corporate Governance and Stewardship Committee and the Audit Committee. Mr. Muncrief will receive compensation for his Board service that …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's words("OGE Energy") is the parent company of Oklahoma Gas and Electric Company ("OG&E"), a regulated electric company with approximately 917,000 customers in Oklahoma and western Arkansas. On July 29, 2026, OGE Energy issued a press release announcing its consolidated financial results for the quarter ended June 30, 2026. A copy of such press release is furnished as Exhibit 99.01 and incorporated by reference herein.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

In the company's wordsItem 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant On June 12, 2026 (the "Closing Date"), OGE Energy Corp. ("OGE Energy") and its subsidiary, Oklahoma Gas and Electric Company ("OG&E"), each entered into a second amended and restated credit agreement providing for an unsecured five-year revolving credit facility (each, a "New Facility" and collectively, the "New Facilities"). Each of the New Facilities is scheduled to terminate on June 12, 2031. However, each of OGE Energy and OG&E have the right to request an extension of the revolving credit facility termination date, subject to the lender's …

Took on a major new debt or obligation (Item 2.03)

New borrowing adds to what the company owes and the interest it pays.

Shared shareholder vote results (Item 5.07)

How shareholders voted on board members and proposals.

In the company's words("OGE Energy") held on May 14, 2026, the shareholders: •Elected eight members of the Board of Directors; •Ratified the appointment of Ernst & Young LLP as OGE Energy's principal independent accountants for 2026; •Approved, on an advisory basis, the compensation paid to named executive officers; and •Voted a majority in favor of the shareholder proposal regarding simple majority vote but received less than the 80 percent of the outstanding votes required to implement the changes. The number of votes cast for, against or withheld, as well as the number of abstentions and broker non-votes as to each of such matters, were as stated below. Proposal No. 1: Votes For Votes …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsOGE Energy's Board of Directors declared a third quarter dividend of $0.425 per common share of stock, to be paid July 31, 2026, to shareholders of record July 6, 2026.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's words("OGE Energy") is the parent company of Oklahoma Gas and Electric Company ("OG&E"), a regulated electric company with approximately 915,000 customers in Oklahoma and western Arkansas. On April 29, 2026, OGE Energy issued a press release announcing its consolidated financial results for the quarter ended March 31, 2026. A copy of such press release is furnished as Exhibit 99.01 and incorporated by reference herein.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's wordsOn April 13, 2026, Luther C. Kissam, IV, a member of the Board of Directors (the “Board”) of OGE Energy Corp. (the “Company”), informed the Company that he will not stand for re-election at the end of his term and will resign from the Board at the upcoming annual shareholder meeting scheduled for May 14, 2026 (the "Annual Meeting"). His resignation will be effective on that date. Mr. Kissam has served for more than five years on the Board and various Board committees. Mr. Kissam stated that his decision is based on recently accepting a new position as chief executive officer of another company, which requires him to resign as a member of the board of directors of other …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's words("OGE Energy") is the parent company of Oklahoma Gas and Electric Company ("OG&E"), a regulated electric company with approximately 913,000 customers in Oklahoma and western Arkansas. On April 1, 2026, OG&E, an Oklahoma corporation, completed the issuance of $350.0 million in aggregate principal amount of its 5.90% Senior Notes, Series due April 1, 2056 (the "OG&E Senior Notes"). The offering of the OG&E Senior Notes was registered under the Securities Act of 1933, as amended, pursuant to OG&E's registration statement on Form S-3ASR (File No. 333-279061-01). A prospectus supplement relating to the offering and sale of the OG&E Senior Notes was filed with the Securities …

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's wordsOn February 19, 2026, Judy R. McReynolds, a member of the Board of Directors (the “Board”) of OGE Energy Corp. (the “Company”), informed the Company that she will not stand for re-election at the end of her term and will retire from the Board at the upcoming annual shareholder meeting scheduled for May 14, 2026. Her retirement will be effective on that date. Ms. McReynolds’ retirement follows more than 14 years of service on the Board and various Board committees, with five years as the Lead Director. Her contributions to the Company have been significant, and we appreciate her support and service. Ms. McReynolds stated that her decision is not due to any disagreement …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's words("OGE Energy") is the parent company of Oklahoma Gas and Electric Company ("OG&E"), a regulated electric company with approximately 913,000 customers in Oklahoma and western Arkansas. On February 18, 2026, OGE Energy issued a press release announcing its consolidated financial results for the year ended December 31, 2025 and Board approval of a second quarter dividend. A copy of such press release is furnished as Exhibit 99.01 and incorporated by reference herein.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Shared shareholder vote results (Item 5.07)

How shareholders voted on board members and proposals.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Signed a major agreement (Item 1.01)

A major new contract can change what the company sells, spends or owes.

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.