Did Avista indicate any disagreement related to Jason R. Thackston’s departure?

Avista explicitly states that Jason R. Thackston’s decision to accept the Whitworth University position and leave the company is not due to any disagreement with management or the Board. This language signals the retirement is presented as an amicable, planned leadership transition.

Avista (NYSE: AVA) SVP Jason Thackston to retire in 2027

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)

Form Type

8-K

Rhea-AI Filing Summary

Avista Corporation reported that Jason R. Thackston, Senior Vice President of Growth, Energy Policy and External Relations, has announced his retirement from the company, effective January 1, 2027. He plans to join Whitworth University as Vice President of Finance and Administration and Chief Financial Officer.

The company states that his decision to depart is not due to any disagreement with management or the Board of Directors. Over the next six months, Mr. Thackston will focus on transitioning his responsibilities to support an orderly leadership handoff.

8-K Event Classification

Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers

1 item

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Governance

Key personnel changes including departures, elections, or appointments of directors and executive officers.

Key Figures

Retirement effective date: January 1, 2027 Retirement announcement date: July 2, 2026 New role title: VP of Finance and Administration and CFO

3 metrics

Retirement effective date January 1, 2027 Effective date of Jason R. Thackston’s retirement from Avista

Retirement announcement date July 2, 2026 Date Avista disclosed Jason R. Thackston’s planned retirement

New role title VP of Finance and Administration and CFO Position Jason R. Thackston will hold at Whitworth University

Key Terms

Emerging growth company, Item 5.02, Chief Financial Officer, Board of Directors, +1 more

5 terms

Emerging growth company regulatory

"Emerging growth company Item 5.02 Departure of Directors or Certain Officers"

An emerging growth company is a recently public or smaller public firm that qualifies for temporary, lighter regulatory and disclosure rules to reduce the cost and effort of being public. For investors, it means the company may provide less historical financial detail and face fewer reporting requirements than larger firms, so it can grow more quickly but also carries higher uncertainty—like buying a promising early-stage product with fewer user reviews.

Item 5.02 regulatory

"Item 5.02 Departure of Directors or Certain Officers; Election of Directors"

Chief Financial Officer financial

"as its Vice President of Finance and Administration and Chief Financial Officer"

A Chief Financial Officer (CFO) is the person in charge of a company's money and financial planning. They decide how to spend, save, and invest funds to help the company grow and stay stable. Their role is important because good financial decisions keep the company healthy and successful.

Board of Directors financial

"not due to any disagreement between himself and management or the Board of Directors"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

Whitworth University other

"will be joining his alma mater Whitworth University, with which he has previously served"

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Understanding 8-K Material Events →

Available on EDGAR 07/02/2026 - 04:34 PM Accepted by SEC EDGAR 07/02/2026 - 04:32 PM

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

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

     Date of Report (Date of earliest event reported): July 02, 2026

    

AVISTA CORPORATION

(Exact name of Registrant as Specified in Its Charter)


Washington	001-03701	91-0462470
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

1411 East Mission Avenue
Spokane, Washington		99202-2600
(Address of Principal Executive Offices)		(Zip Code)

     Registrant’s Telephone Number, Including Area Code: 509 489-0500

    

(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:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock	AVA	The New York Stock Exchange

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. ☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On July 2, 2026, Jason R. Thackston, Senior Vice President of Growth, Energy Policy and External Relations of Avista Corporation (Avista Corp. or the Company), announced his retirement from the Company, effective January 1, 2027.

In January 2027 Mr. Thackston will be joining his alma mater Whitworth University, with which he has previously served in Board-level leadership positions, as its Vice President of Finance and Administration and Chief Financial Officer. His decision to accept this position and depart from Avista Corp. is not due to any disagreement between himself and management or the Board of Directors.

Mr. Thackston will focus on transition of his responsibilities over the next six months.

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 hereunto duly authorized.


			Avista Corporation
			(Registrant)

Date:	July 2, 2026	By:	/s/ Gregory C. Hesler
			Gregory C. Hesler Senior Vice President, General Counsel, Corporate Secretary and Chief Ethics/Compliance Officer

Source: View Original Filing on SEC EDGAR

FAQ

What leadership change did Avista Corporation (AVA) announce in this 8-K?

Avista announced that Jason R. Thackston, Senior Vice President of Growth, Energy Policy and External Relations, will retire effective January 1, 2027. He will spend the next six months transitioning his responsibilities to support continuity in the company’s leadership structure and external relations work.

When will Avista executive Jason R. Thackston retire from the company?

Jason R. Thackston’s retirement from Avista is effective January 1, 2027. Until then, he will focus on transitioning his responsibilities over approximately six months, helping ensure an orderly shift in oversight of growth, energy policy, and external relations functions at the utility.

Why is Jason R. Thackston leaving Avista Corporation (AVA)?

Jason R. Thackston is leaving Avista to join Whitworth University as Vice President of Finance and Administration and Chief Financial Officer. The company notes his departure is not due to any disagreement with Avista’s management or Board of Directors over policies, practices, or operations.

What position will Jason R. Thackston take after leaving Avista?

After leaving Avista, Jason R. Thackston will join Whitworth University as its Vice President of Finance and Administration and Chief Financial Officer. The filing notes he has previously served the university in Board-level leadership roles and will transition to this new executive position in January 2027.

Filing Exhibits & Attachments

1 document