Avista Corp (AVA) SVP Thackston Logs Share Vesting and Tax Sale

Rhea-AI Filing Summary

Avista Corp senior vice president Jason R. Thackston reported routine equity compensation activity. On January 6, 2026, 1,710 "2023 Performance Shares (TSR)" converted into Avista common stock after meeting their performance conditions, with no exercise price. On the same date, 1,352 common shares at $38.95 per share were disposed of to cover income taxes tied to multiple restricted stock tranches from 2023, 2024, and 2025 that vested that day. After these transactions, Thackston directly holds 40,089 shares of Avista common stock.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Thackston Jason R

(Last) (First) (Middle)

1411 E MISSION AVENUE

(Street)

SPOKANE WA 99202

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AVISTA CORP [ AVA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Senior Vice President

3. Date of Earliest Transaction (Month/Day/Year)
01/06/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/06/2026		F		1,352(1)	D	$38.95	40,089	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Conversion of 2023 Performance Shares (TSR)	(2)	01/06/2026		M			1,710	(2)	(2)	Common Stock	1,710	(2)	0	D

Explanation of Responses:

1. Shares sold to pay income tax on final 1/3 of 2023, second 1/3 of 2024 and first 1/3 of 2025 restricted shares that vested on January 6, 2026.

2. No conversion price. Shares awarded if performance measure is met.

	/s/Jason R. Thackston	01/08/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

Who is the insider involved in this AVISTA CORP (AVA) Form 4 filing?

The reporting person is Jason R. Thackston, a Senior Vice President of Avista Corp.

What derivative equity award activity did Avista Corp (AVA) report for Jason Thackston?

On January 6, 2026, 1,710 "2023 Performance Shares (TSR)" converted into Avista common stock at an exercise price of $0.00, following achievement of the performance measure.

How many Avista Corp (AVA) shares did Jason Thackston dispose of for taxes?

He disposed of 1,352 shares of Avista common stock at a price of $38.95 per share to pay income tax on vested restricted shares.

What triggered the tax-related share sale reported by Avista Corp (AVA)?

The sale was to pay income tax on the final one-third of 2023, the second one-third of 2024, and the first one-third of 2025 restricted shares that vested on January 6, 2026.

How many Avista Corp (AVA) shares does Jason Thackston own after these transactions?

Following the reported transactions, Jason R. Thackston directly owns 40,089 shares of Avista common stock.

Are Jason Thackston’s Avista Corp (AVA) holdings reported as direct or indirect ownership?

The 40,089 Avista common shares reported after the transactions are held with direct ownership.