SOUTHWESTERN ELECTRIC POWER CO Contracts & Agreements

Underwriting Agreement, dated March 28, 2023 between the Company and the Underwriters named in Exhibit 1 thereto, in connection with the sale of the Notes (Filed With SEC on March 30, 2023)

Sixteenth Supplemental Indenture, dated as of March 1, 2023, between the Company and The Bank of New York Mellon Trust Company, N.A, as Trustee, establishing the terms of the Notes (Filed With SEC on March 30, 2023)

Underwriting Agreement, dated November 1, 2021 between the Company and the Underwriters named in Exhibit 1 thereto, in connection with the sale of the Notes (Filed With SEC on November 3, 2021)

Fifteenth Supplemental Indenture, dated as of November 1, 2021, between the Company and The Bank of New York Mellon Trust Company, N.A, as Trustee, establishing the terms of the... (Filed With SEC on November 3, 2021)

Underwriting Agreement, dated March 8, 2021 between the Company and the Underwriters named in Exhibit 1 thereto, in connection with the sale of the Notes (Filed With SEC on March 10, 2021)

Fourteenth Supplemental Indenture, dated as of March 1, 202 (Filed With SEC on March 10, 2021)

Description of Securities (Filed With SEC on February 20, 2020)

Second Amendment to AEP System Supplemental Retirement Savings Plan, as Amended and Restated as of January 1, 2011 (Non-Qualified) (Filed With SEC on February 20, 2020)

AEP System Excess Benefit Plan, Amended and Restated as of January 1, 2020 (Filed With SEC on February 20, 2020)

Central and South West System Special Executive Retirement Plan Amended and Restated effective January 1, 2020 (Filed With SEC on February 20, 2020)

AEP Aircraft Timesharing Agreement dated October 1, 2019 between American Electric Power Service Corporation and Nicholas K. Akins (Filed With SEC on October 24, 2019)

AMENDED AND RESTATED AIRCRAFT TIME SHARING AGREEMENT (Filed With SEC on October 24, 2019)

Second Amendment to AEPSC Umbrella Trust for Executives (Filed With SEC on February 21, 2019)

Underwriting Agreement, dated September 11, 2018 between the Company and the Underwriters named in Exhibit 1 thereto, in connection with the sale of the Notes (Filed With SEC on September 13, 2018)

Thirteenth Supplemental Indenture, dated as of September 1, 2018, between the Company and The Bank of New York Mellon Trust Company, N.A, as Trustee, establishing the terms of the... (Filed With SEC on September 13, 2018)

Underwriting Agreement, dated January 18, 2018 between the Company and the Underwriters named in Exhibit 1 thereto, in connection with the sale of the Notes (Filed With SEC on January 23, 2018)

Twelfth Supplemental Indenture, dated as of January 18, 2018, between the Company and The Bank of New York Mellon Trust Company, N.A., as Trustee, establishing the terms of the... (Filed With SEC on January 23, 2018)

SOUTHWESTERN ELECTRIC POWER COMPANY Underwriting Agreement Dated September 26, 2016 (Filed With SEC on September 29, 2016)

SOUTHWESTERN ELECTRIC POWER COMPANY and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. AS TRUSTEE ___________________ ELEVENTH SUPPLEMENTAL INDENTURE Dated as of September 1,... (Filed With SEC on September 29, 2016)

SOUTHWESTERN ELECTRIC POWER COMPANY Underwriting Agreement Dated March 23, 2015 (Filed With SEC on March 26, 2015)

SOUTHWESTERN ELECTRIC POWER COMPANY and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. AS TRUSTEE ___________________ TENTH SUPPLEMENTAL INDENTURE Dated as of March 1, 2015... (Filed With SEC on March 26, 2015)

SOUTHWESTERN ELECTRIC POWER COMPANY Underwriting Agreement Dated January 31, 2012 (Filed With SEC on February 3, 2012)

SOUTHWESTERN ELECTRIC POWER COMPANY and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. AS TRUSTEE ___________________ NINTH SUPPLEMENTAL INDENTURE Dated as of February 1, 2012... (Filed With SEC on February 3, 2012)

SOUTHWESTERNELECTRIC POWER COMPANY (Filed With SEC on March 9, 2010)

SOUTHWESTERNELECTRIC POWER COMPANY and THE BANKOF NEW YORK MELLON, ASTRUSTEE ___________________ EIGHTHSUPPLEMENTAL INDENTURE Dated asof March 1, 2010 Supplementalto the Indenture... (Filed With SEC on March 9, 2010)

TRANSMISSIONCOORDINATION AGREEMENT Between PublicService Company of Oklahoma, SouthwesternElectric Power Company, WestTexas Utilities Company, and AmericanElectric Power Service... (Filed With SEC on February 26, 2010)

AMERICANELECTRIC POWER SERVICE CORPORATION CHANGE INCONTROL AGREEMENT AsRevised Effective November 1, 2009 (Filed With SEC on February 26, 2010)

AMERICANELECTRIC POWER SYSTEM STOCKOWNERSHIP REQUIREMENT PLAN (AsAmended and Restated Effective January 1, 2010) ARTICLEI PURPOSEAND EFFECTIVE DATE (Filed With SEC on February 26, 2010)

AMERICANELECTRIC POWER SYSTEM EXCESSBENEFIT PLAN (AsAmended and Restated as of January 1, 2008) ARTICLEI Purposesand Effective Date (Filed With SEC on February 27, 2009)

AMERICANELECTRIC POWER SYSTEM SUPPLEMENTALRETIREMENT SAVINGS PLAN (AsAmended and Restated Effective January 1, 2008) ARTICLEI PURPOSESAND EFFECTIVE DATE (Filed With SEC on February 27, 2009)

FIRSTAMENDMENT Tothe AmericanElectric Power Service Corporation Umbrella TrustTM ForExecutives (Filed With SEC on February 27, 2009)

AMENDMENTTO EMPLOYMENT AGREEMENT (MichaelG. Morris) (Filed With SEC on February 27, 2009)

AMENDMENTTO EMPLOYMENT AGREEMENT (RobertP. Powers) (Filed With SEC on February 27, 2009)

SecondAmendment tothe AEPSYSTEM SURVIVOR BENEFIT PLAN asamended and restated effective January 31, 2000 (Filed With SEC on February 27, 2009)

AMERICANELECTRIC POWER SYSTEM INCENTIVECOMPENSATION DEFERRAL PLAN (AsAmended and Restated Effective January 1, 2008) ARTICLEI PURPOSEAND EFFECTIVE DATE (Filed With SEC on February 27, 2009)

NUCLEARKEY CONTRIBUTOR RETENTIONPLAN (AsAmended and Restated as of January 1, 2008) ARTICLEI Establishmentand Purpose (Filed With SEC on February 27, 2009)

AMENDMENT TOCERTAIN RESTRICTED STOCK UNIT AWARD AGREEMENTS ISSUEDUNDER THE AMERICANELECTRIC POWER SYSTEM LONG-TERMINCENTIVE PLAN (Filed With SEC on February 27, 2009)

AMERICANELECTRIC POWER SYSTEM STOCKOWNERSHIP REQUIREMENT PLAN (AsAmended and Restated Effective January 1, 2008) ARTICLEI PURPOSEAND EFFECTIVE DATE (Filed With SEC on February 27, 2009)

CENTRALAND SOUTH WEST SYSTEM SPECIALEXECUTIVE RETIREMENT PLAN (AsAmended and Restated Effective January 1, 2009) ARTICLEI Purposesand Effective Date (Filed With SEC on February 27, 2009)

______________________________________________________________________________ (Filed With SEC on October 31, 2008)

AMENDMENT (Filed With SEC on October 31, 2008)

______________________________________________________________________________ (Filed With SEC on October 31, 2008)

AMENDMENT (Filed With SEC on October 31, 2008)

SOUTHWESTERNELECTRIC POWER COMPANY UnderwritingAgreement DatedJune 4, 2008 (Filed With SEC on June 10, 2008)

SOUTHWESTERNELECTRIC POWER COMPANY and THE BANKOF NEW YORK, ASTRUSTEE ___________________ SEVENTHSUPPLEMENTAL INDENTURE Dated asof June 9, 2008 Supplementalto the Indenture dated... (Filed With SEC on June 10, 2008)

SOUTHWESTERN ELECTRIC POWER COMPANY Underwriting Agreement Dated November 29, 2007 (Filed With SEC on December 4, 2007)

SOUTHWESTERN ELECTRIC POWER COMPANY and THE BANK OF NEW YORK, AS TRUSTEE ___________________ SIXTH SUPPLEMENTAL INDENTURE Dated as of December 4, 2007 Supplemental to the... (Filed With SEC on December 4, 2007)

SOUTHWESTERN ELECTRIC POWER COMPANY Underwriting Agreement Dated January 8, 2007 (Filed With SEC on January 12, 2007)

SOUTHWESTERN ELECTRIC POWER COMPANY and THE BANK OF NEW YORK, AS TRUSTEE ___________________ FIFTH SUPPLEMENTAL INDENTURE Dated as of January 11, 2007 Supplemental to the... (Filed With SEC on January 12, 2007)

RESTATED AND AMENDED OPERATING AGREEMENT Among Public Service Company of Oklahoma Southwestern Electric Power Company American Electric Power Service Corporation May 1, 2006... (Filed With SEC on May 5, 2006)

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SOUTHWESTERN ELECTRIC POWER CO Contracts & Agreements