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Item 6. Exhibits

11K characters. Original on sec.gov ·

Item 6. Exhibits

The documents designated with an (*) below have previously been filed on behalf of the Registrants shown and are incorporated herein by reference to the documents indicated and made a part hereof:

ExhibitDescriptionPreviously Filed as Exhibit to:
AEPTCo‡ File No. 3-217143
*4(a)Company Order and Officers’ Certificate between AEPTCo and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated May 14, 2025, establishing terms of the Notes.Form 8-K dated May 12, 2025, Exhibit 4(a)
PSO‡ File No. 0-343
*4(a)Thirteenth Supplemental Indenture, dated June 1, 2025, between PSO and The Bank of New York Mellon Trust Company, N.A., as Trustee, establishing terms of the Notes.Form 8-K dated June 23, 2025 Exhibit 4(a)

The exhibits designated with an (X) in the table below are being filed on behalf of the Registrants.

ExhibitDescriptionAEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
10(a)Amended and Restated Limited Liability Company Agreement, dated June 5, 2025, among AEP Transmission Company, LLC, Midwest Transmission Holdings, LLC and Olympus BidCo L.P.X
31(a)Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002XXXXXXXX
31(b)Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002XXXXXXXX
32(a)Certification of Chief Executive Officer Pursuant to Section 1350 of Chapter 63 of Title 18 of the United States CodeXXXXXXXX
32(b)Certification of Chief Financial Officer Pursuant to Section 1350 of Chapter 63 of Title 18 of the United States CodeXXXXXXXX
101.INSXBRL Instance DocumentThe instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document.
101.SCHXBRL Taxonomy Extension SchemaXXXXXXXX
101.CALXBRL Taxonomy Extension Calculation LinkbaseXXXXXXXX
101.DEFXBRL Taxonomy Extension Definition LinkbaseXXXXXXXX
101.LABXBRL Taxonomy Extension Label LinkbaseXXXXXXXX
101.PREXBRL Taxonomy Extension Presentation LinkbaseXXXXXXXX
104Cover Page Interactive Data FileFormatted as Inline XBRL and contained in Exhibit 101.

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. The signature for each undersigned company shall be deemed to relate only to matters having reference to such company and any subsidiaries thereof.

AMERICAN ELECTRIC POWER COMPANY, INC.

By: /s/ Kate Sturgess

Kate Sturgess

Senior Vice President, Controller and Chief Accounting Officer

(Principal Accounting Officer and Authorized Signatory)

AEP TEXAS INC.

AEP TRANSMISSION COMPANY, LLC

APPALACHIAN POWER COMPANY

INDIANA MICHIGAN POWER COMPANY

OHIO POWER COMPANY

PUBLIC SERVICE COMPANY OF OKLAHOMA

SOUTHWESTERN ELECTRIC POWER COMPANY

By: /s/ Kate Sturgess

Kate Sturgess

Controller and Chief Accounting Officer

(Principal Accounting Officer and Authorized Signatory)

Date: July 30, 2025

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