8-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

AVISTA CORPORATION

(Exact name of Registrant as Specified in Its Charter)

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Section 5 – Corporate Governance and Management

Item 5.07 Submission of Matters to a Vote of Security Holders.

The 2025 Annual Meeting of Shareholders of Avista Corporation (Avista Corp.) was held on May 8, 2025. Four proposals were submitted to shareholders as disclosed in Avista Corp.'s Definitive Proxy Statement filed on March 26, 2025, of which all four were approved. There were 80,289,267 shares of common stock issued and outstanding as of March 7, 2025, the record date, with 72,406,352 shares represented at said meeting. The proposals and the results of the voting are as follows:

Proposal 1: Election of eleven directors, for one-year terms expiring at the 2026 Annual Meeting of Shareholders, and until their successors are elected.

All directors were elected since the number of votes cast “for” each nominee exceeded the number of votes “against.” Abstentions and broker non-votes had no effect on the election.

Proposal 2: Ratification of the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for 2025.

This proposal was approved as the number of votes cast “for” exceeded the number of votes “against.” Abstentions had no effect on the outcome.

Proposal 3: Amendment and restatement of the Company's Long Term Incentive Plan, including an increase in the number of shares available.

This proposal was approved as the number of votes cast “for” exceeded the number of votes “against.” Abstentions had no effect on the outcome.

Proposal 4: Advisory (non-binding) vote on executive compensation.

This advisory (non-binding) resolution was approved as the number of votes cast “for” exceeded the number of votes “against.” Abstentions and broker non-votes had no effect on the outcome.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.