| 2026-02-25 | 10-K | 10.26 | Avista Corporation Non-Employee Director Compensation. |
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| 2026-02-25 | 10-K | 10.24 | Avista Corporation Performance Award Agreement 2024. (3) |
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| 2026-02-25 | 10-K | 10.23 | Avista Corporation Performance Award Agreement 2025. (3) |
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| 2026-02-25 | 10-K | 10.19 | Avista Corporation Long-Term Incentive Plan. (3) |
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| 2025-02-26 | 10-K | 10.27 | Avista Corporation Non-Employee Director Compensation. |
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| 2025-02-26 | 10-K | 10.25 | Avista Corporation Officer Incentive Plan. (3) |
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| 2025-02-26 | 10-K | 10.24 | Avista Corporation Performance Award Agreement 2023. (3) |
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| 2024-02-21 | 10-K | 10.29 | Avista Corporation Non-Employee Director Compensation. |
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| 2024-02-21 | 10-K | 10.26 | Employment Agreement between the Company and Wayne O. Manuel in the form of a Letter of Employment. (3) |
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| 2024-02-21 | 10-K | 10.25 | Avista Corporation Officer Incentive Plan. (3) |
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| 2024-02-21 | 10-K | 10.24 | Avista Corporation Performance Award Agreement 2023. (3) |
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| 2023-06-12 | 8-K | 10.2 | Bond Delivery Agreement, dated as of June 8, 2023, between Avista Corporation and Union Bank, N.A. |
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| 2023-06-12 | 8-K | 10.1 | Fifth Amendment to Credit Agreement, dated as of June 8, 2023, among Avista Corporation, the lending financial institutions, U.S. Bank National Corporation and Wells Fargo Bank National Association as issuing banks, and MUFG Bank, LTD. as Administrative Agent. |
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| 2023-02-22 | 10-K | 10.26 | Avista Corporation Non-Employee Director Compensation. |
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| 2023-02-22 | 10-K | 10.23 | Avista Corporation Officer Incentive Plan. (3) |
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| 2023-02-22 | 10-K | 10.22 | Avista Corporation Performance Award Agreement 2021. (3) |
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| 2023-01-05 | 8-K | 10.2 | Incremental Commitment and Joinder Agreement, dated as of December 30, 2022, among Avista Corporation and U.S. Bank National Association, as Administrative Agent, and CoBank as Incremental Lender. |
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| 2023-01-05 | 8-K | 10.1 | Continuing Letter of Credit Agreement dated as of December 29, 2022, among Avista Corporation and MUFG Bank Ltd., as Issuer. |
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| 2022-12-20 | 8-K | 10.2 | First Amendment, dated as of December 15, 2022, to the Credit Agreement dated as of November 29, 2022 among Avista Corporation and Keybank National Association, as Lender and Administrative Agent. |
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| 2022-12-20 | 8-K | 10.1 | Credit Agreement, dated as of December 14, 2022, among Avista Corporation and U.S. Bank National Association, as Lender and Administrative Agent, and MUFG Bank Ltd. as Lender. |
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| 2022-11-30 | 8-K | 10.1 | Credit Agreement, dated as of November 29, 2022, among Avista Corporation and Keybank National Association, as Lender and Administrative Agent. |
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| 2022-02-23 | 10-K | 10.26 | Avista Corporation Non-Employee Director Compensation. |
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| 2022-02-23 | 10-K | 10.23 | Avista Corporation Officer Incentive Plan. (3) |
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| 2022-02-23 | 10-K | 10.22 | Avista Corporation Performance Award Agreement 2021. (3) |
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| 2021-06-08 | 8-K | 10.1 | Fourth Amendment to Credit Agreement, dated as of June 4, 2021, among Avista Corporation, various institutional lenders, U.S. Bank National Association as an Issuing Bank, Wells Fargo Bank, National Association as an Issuing Bank, and MUFG Union Bank, N.A. as an Administrative Agent and Issuing Bank. |
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| 2021-02-24 | 10-K | 10.25 | Avista Corporation Non-Employee Director Compensation. |
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| 2021-02-24 | 10-K | 10.22 | Avista Corporation Performance Award Agreement 2020. (3) |
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| 2020-06-08 | 8-K | 10.2 | BOND DELIVERY AGREEMENT |
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| 2020-06-08 | 8-K | 10.1 | CREDIT AGREEMENT |
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| 2020-04-08 | 8-K | 10.1 | EXHIBIT 10.01 CREDIT AGREEMENT |
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| 2020-02-26 | 10-K | 10.28 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2020-02-26 | 10-K | 10.22 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2020-02-26 | 10-K | 10.15 | SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN POST 2004 |
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| 2020-02-26 | 10-K | 10.14 | EXECUTIVE DEFERRAL PLAN 2020 COMPONENT |
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| 2019-11-07 | 10-Q | 10.2 | CHANGE IN CONTROL AGREEMENT LETTER |
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| 2019-11-07 | 10-Q | 10.1 | FORM OF CHANGE IN CONTROL AGREEMENT |
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| 2019-02-20 | 10-K | 10.32 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2019-02-20 | 10-K | 10.25 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2019-02-20 | 10-K | 10.21 | LONG-TERM INCENTIVE PLAN 2016 AMENDMENT |
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| 2018-02-21 | 10-K | 10.33 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2018-02-21 | 10-K | 10.25 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2018-02-21 | 10-K | 10.16 | EXECUTIVE DEFERRAL PLAN 2016 COMPONENT |
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| 2018-02-21 | 10-K | 10.15 | EXECUTIVE DEFERRAL PLAN 2011 COMPONENT |
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| 2018-02-21 | 10-K | 10.14 | EXECUTIVE DEFERRAL PLAN 2005 COMPONENT |
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| 2017-02-22 | 10-K | 10.32 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2017-02-22 | 10-K | 10.24 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2016-08-16 | 8-K | 10.1 | TERM LOAN AGREEMENT |
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| 2016-02-24 | 10-K | 10.39 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2016-02-24 | 10-K | 10.31 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2015-02-25 | 10-K | 10.38 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2015-02-25 | 10-K | 10.30 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2014-04-22 | 8-K | 10.2 | BOND DELIVERY AGREEMENT |
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| 2014-04-22 | 8-K | 10.1 | CREDIT AGREEMENT |
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| 2014-02-26 | 10-K | 10.35 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2014-02-26 | 10-K | 10.27 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2013-08-16 | 8-K | 10.2 | BOND DELIVERY AGREEMENT |
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| 2013-08-16 | 8-K | 10.1 | TERM LOAN AGREEMENT |
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| 2013-02-26 | 10-K | 10.33 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2013-02-26 | 10-K | 10.25 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2012-05-04 | 10-Q | 10.1 | ECOVA, INC. (FORMERLY KNOWN AS ADVANTAGE IQ, INC.) SECOND AMENDED AND RESTATED 1 |
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| 2012-02-28 | 10-K | 10.32 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2012-02-28 | 10-K | 10.24 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2012-02-28 | 10-K | 10.18 | AVISTA CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN |
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| 2012-02-28 | 10-K | 10.17 | AVISTA CORPORATION SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN |
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| 2012-02-28 | 10-K | 10.16 | AVISTA CORPORATION EXECUTIVE DEFERRAL PLAN |
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| 2012-02-28 | 10-K | 10.15 | AVISTA CORPORATION EXECUTIVE DEFERRAL PLAN |
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| 2011-12-16 | 8-K | 10.1 | FIRST AMENDMENT AND WAIVER THEREUNDER |
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| 2011-02-25 | 10-K | 10.32 | AVISTA CORPORATION NON-EMPLOYEE DIRECTOR COMPENSATION |
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| 2011-02-25 | 10-K | 10.31 | FORM OF CHANGE OF CONTROL AGREEMENT |
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| 2011-02-25 | 10-K | 10.30 | FORM OF CHANGE OF CONTROL AGREEMENT |
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| 2011-02-25 | 10-K | 10.29 | FORM OF CHANGE OF CONTROL AGREEMENT |
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| 2011-02-25 | 10-K | 10.28 | FORM OF CHANGE OF CONTROL AGREEMENT |
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| 2011-02-25 | 10-K | 10.24 | AVISTA CORPORATION PERFORMANCE AWARD AGREEMENT |
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| 2011-02-25 | 10-K | 10.23 | AVISTA CORP PERFORMANCE AWARD PLAN SUMMARY |
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| 2011-02-16 | 8-K | 10.2 | BOND DELIVERY AGREEMENT |
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| 2011-02-16 | 8-K | 10.1 | CREDIT AGREEMENT |
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| 2010-03-16 | 8-K | 10.1 | AMENDMENT NO. 10, DATED AS OF MARCH 12, 2010 |
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| 2009-12-01 | 8-K | 10.1 | CREDIT AGREEMENT |
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| 2009-08-07 | 10-Q | 10.1 | WAIVER AND AMENDMENT |
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| 2009-03-18 | 8-K | 10.1 | AMENDMENT NO. 8 TO THE RECEIVABLES PURCHASE AGREEMENT |
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| 2009-02-27 | 10-K | 10.45 | FORM OF CHANGE OF CONTROL AGREEMENT BETWEEN THE COMPANY AND ITS EXEC OFFICERS |
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| 2009-02-27 | 10-K | 10.44 | FORM OF CHANGE OF CONTROL AGREEMENT BETWEEN THE COMPANY AND ITS EXEC OFFICERS |
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| 2009-02-27 | 10-K | 10.34 | THE COMPANY'S UNFUNDED SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN |
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| 2009-02-27 | 10-K | 10.33 | EXECUTIVE DEFERRAL PLAN OF THE COMPANY |
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| 2009-02-27 | 10-K | 10.3 | AMENDMENT NO. 2, DATED AS OF DECEMBER 19, 2008 |
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| 2009-01-05 | 8-K | 10.1 | LETTER OF CREDIT AND REIMBURSEMENT AGREEMENT |
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