Sec Form 4 Filing - OGE ENERGY CORP. @ Enable Midstream Partners, LP - 2021-12-02

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person OGE ENERGY CORP. 2. Issuer Name and Ticker or Trading Symbol Enable Midstream Partners, LP [ ENBL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 321 NORTH HARVEY, PO BOX 321 3. Date of Earliest Transaction (MM/DD/YY) 12/02/2021 (Street) OKLAHOMA CITY, OK73101 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Units Representing Limited Partner Interests 12/02/2021 D 110,982,805( 1 ) D 0 I( 1 ) see footnote( 1 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other OGE ENERGY CORP. 321 NORTH HARVEY PO BOX 321 OKLAHOMA CITY, OK73101 X OGE Enogex Holdings LLC 321 NORTH HARVEY PO BOX 321 OKLAHOMA CITY, OK73101 X Signatures OGE Energy Corp., /s/Patricia D. Horn, Vice President, Governance and Corporate Secretary 12/06/2021 Signature of Reporting Person Date OGE Enogex Holdings LLC, by: OGE Energy Holdings, Inc. its Sole Member and a wholly owned subsidiary of OGE Energy Corp. /s/ Patricia D. Horn, Secretary 12/06/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This Form 4 is being filed jointly by OGE Energy Corp. ("OGE Energy") and OGE Enogex Holdings LLC ("OGE Enogex Holdings") OGE Energy via its 100% interest in OGE Energy Holdings, Inc., owns all of the outstanding membership interests in OGE Enogex Holdings, which is the record holder of the common units. ( 2 )Disposed of pursuant to a merger agreement between Issuer and Energy Transfer LP in exchange for 95,389,720 units of Energy Transfer LP having a market value of $8.32 per unit (or an aggregate of $793,642,470.40) on the effective date of merger.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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