Andrew D. Cooper - 17 Feb 2026 Form 4 Insider Report for PINNACLE WEST CAPITAL CORP (PNW)

Role: SVP & CFO
Signature: /s/ Melissa Sallee, Attorney-in-Fact
Issuer symbol: PNW
Transactions as of: 17 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 19 Feb 2026, 16:02:38 UTC
Previous filing: 20 Mar 2025
Next filing: 24 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Cooper Andrew D	SVP & CFO	400 N. 5TH STREET, PHOENIX	/s/ Melissa Sallee, Attorney-in-Fact	19 Feb 2026	0001816721

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	PNW	Restricted Stock Units	Award		+8,092			8,092	17 Feb 2026	Common Stock	8,092		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On February 17, 2026, the recipient received the number specified above of Restricted Stock Units and related Dividend Equivalents. Each Restricted Stock Unit represents a contingent right to receive the economic equivalent of one share of the Company's common stock. The Restricted Stock Units will be settled in common stock. When the Company declares a cash dividend on its stock from the date of grant until the applicable vesting date, the recipient will be credited with additional Restricted Stock Units in satisfaction of the Dividend Equivalents Award. Vested Restricted Stock Units in satisfaction of the Dividend Equivalents Award will be made in cash.
F2	The Restricted Stock Units award was granted and was effective in February 2026, and vests in four equal, annual installments beginning on February 20, 2027.

Content

On February 17, 2026, the recipient received the number specified above of Restricted Stock Units and related Dividend Equivalents. Each Restricted Stock Unit represents a contingent right to receive the economic equivalent of one share of the Company's common stock. The Restricted Stock Units will be settled in common stock. When the Company declares a cash dividend on its stock from the date of grant until the applicable vesting date, the recipient will be credited with additional Restricted Stock Units in satisfaction of the Dividend Equivalents Award. Vested Restricted Stock Units in satisfaction of the Dividend Equivalents Award will be made in cash.

The Restricted Stock Units award was granted and was effective in February 2026, and vests in four equal, annual installments beginning on February 20, 2027.