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OGE ENERGY CORP.

For the period ended Oct 28, 2026. Filed Oct 28, 2026.

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A notice of a major event between regular reports, such as results, a deal or a change of executives. It is often the first formal record of the news.

Oct 28, 2026 · Filed Oct 28, 2026

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OGE$50.64-0.4%Stored close · as of Nov 6, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 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) · October 28, 2026
(Commission File Number) · (Exact Name of Registrants as Specified in Their Charters) · (I.R.S. Employer Identification No.)
1-12579OGE ENERGY CORP.73-1481638
1-1097OKLAHOMA GAS AND ELECTRIC COMPANY73-0382390
Oklahoma
(State or Other Jurisdiction of Incorporation)
321 North HarveyP.O. Box 321Oklahoma CityOklahoma73101-0321
(Address of Principal Executive Offices)(Zip Code)

(405)553-3000

(Registrant's telephone number, including area code)

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

RegistrantTitle of each classTrading Symbol(s)Name of each exchange on which registered
OGE Energy Corp.Common StockOGENew York Stock Exchange
Oklahoma Gas and Electric CompanyNoneN/AN/A

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

OGE Energy Corp. ("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.

(d) Exhibits
Exhibit NumberDescription
99.01Press release dated October 28, 2026, announcing OGE Energy Corp. reports third quarter 2026 results.
104Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.

This combined Current Report on Form 8-K is being furnished separately by OGE Energy and OG&E (Registrants). Information contained herein relating to any individual Registrant has been furnished by such Registrant on its own behalf. No Registrant makes any representation as to information relating to any other Registrant.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

OGE ENERGY CORP.
OKLAHOMA GAS AND ELECTRIC COMPANY
(Registrant)
By:/s/ Sarah R. Stafford
Sarah R. Stafford
Controller and Chief Accounting Officer

October 28, 2026

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