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AEP Texas Inc.

For the period ended Sep 30, 2026. Filed Oct 28, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Oct 28, 2026

AEP$128.33+1.4%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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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:
AEP Texas‡ File No. 333-221643
*10.1Note Purchase Agreement, dated July 7, 2026, by and among AEP Texas, the Secretary of Energy acting through the U.S. Department of Energy and the Federal Financing Bank.Form 8-K dated July 8, 2026, Exhibit 10.1
*10.2Future Advance Promissory Note of AEP Texas, dated July 7, 2026.Form 8-K dated July 8, 2026, Exhibit 10.2
*10.3Loan Guarantee Agreement, dated July 7, 2026, by and between AEP Texas, and the U.S. Department of Energy.Form 8-K dated July 8, 2026, Exhibit 10.3
*4(a)Fourteenth Supplemental Indenture, dated as of August 1, 2026, between the Company and The Bank of New York Mellon Trust Company, N.A., as Trustee, establishing the terms of the 5.40% Senior Notes, Series O, due 2034 and the 6.30% Senior Notes, Series P, due 2056.Form 8-K dated August 14, 2026, Exhibit 4(a)
*4(a)Nineteenth Supplemental Indenture, dated as of September 16, 2026, between the Company and The Bank of New York Mellon Trust Company, N.A., as Trustee, establishing the terms of the 6.00% Senior Notes, Series S, due 2037.Form 8-K dated September 16, 2026, Exhibit 4(a)

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

ExhibitDescriptionAEPAEPTexasAEPTCoAPCoI&MOPCoPSOSWEPCo
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 Dixon

Kate Dixon

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

SOUTHWESTERN ELECTRIC POWER COMPANY

By:/s/ Kate Dixon

Kate Dixon

Chief Accounting Officer

(Principal Accounting Officer and Authorized Signatory)

Date: October 28, 2026

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.