PINNACLE WEST CAPITAL CORP|4Feb 24, 6:10 PM ET

Blankenship Elizabeth A 4

4 · PINNACLE WEST CAPITAL CORP · Filed Feb 24, 2026

Insider Transaction Report

Form 4

Period: 2026-02-20

PINNACLE WEST CAPITAL CORPPNW

Blankenship Elizabeth A

VP, Controller and CAO

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-02-20+490→ 9,111 total
Disposition to Issuer
Common Stock
[F2]
2026-02-20$98.34/sh−81$7,966→ 9,030 total
Tax Payment
Common Stock
[F3]
2026-02-20$98.34/sh−132$12,981→ 8,898 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+476→ 9,374 total
Disposition to Issuer
Common Stock
[F2]
2026-02-20$98.34/sh−54$5,310→ 9,320 total
Tax Payment
Common Stock
[F3]
2026-02-20$98.34/sh−136$13,374→ 9,184 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+589→ 9,773 total
Disposition to Issuer
Common Stock
[F2]
2026-02-20$98.34/sh−46$4,524→ 9,727 total
Tax Payment
Common Stock
[F3]
2026-02-20$98.34/sh−158$15,538→ 9,569 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+434→ 10,003 total
Disposition to Issuer
Common Stock
[F2]
2026-02-20$98.34/sh−16$1,573→ 9,987 total
Tax Payment
Common Stock
[F3]
2026-02-20$98.34/sh−113$11,112→ 9,874 total
Exercise/Conversion
Restricted Stock Units
[F1][F4][F5]
2026-02-20+490→ 0 total
→ Common Stock (490 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F6][F7][F8]
2026-02-20+476→ 482 total
→ Common Stock (476 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F9][F10][F11]
2026-02-20+589→ 1,177 total
→ Common Stock (589 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F12][F13][F14]
2026-02-20+434→ 1,305 total
→ Common Stock (434 underlying)

Holdings

Common Stock
(indirect: By 401(k))
54

Footnotes (14)

[F1]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 100% shares of common stock.
[F10]The Restricted Stock Units award was granted and was effective in February 2024, and vests in four equal, annual installments beginning on February 20, 2025.
[F11]Includes 91 Restricted Stock Units received in connection with the settlement of dividend equivalent rights.
[F12]The number of derivative securities in Column 5 includes 16 vested Restricted Stock Units received in connection with the settlement of dividend equivalent rights. Dividend equivalent rights accrue with respect to these Restricted Stock Units when and as cash dividends are paid on the Company's common stock.
[F13]The Restricted Stock Units award was granted and was effective in February 2025, and vests in four equal, annual installments beginning on February 20, 2026.
[F14]Includes 51 Restricted Stock Units received in connection with the settlement of dividend equivalent rights.
[F2]Represents the cash settlement of Restricted Stock Units received in connection with the settlement of dividend equivalent rights.
[F3]Shares retained by the Company for purpose of meeting tax withholding requirements. The recipient retained all other shares.
[F4]The number of derivative securities in Column 5 includes 81 vested Restricted Stock Units received in connection with the settlement of dividend equivalent rights. Dividend equivalent rights accrue with respect to these Restricted Stock Units when and as cash dividends are paid on the Company's common stock.
[F5]The Restricted Stock Units award was granted and was effective in February 2022, and vests in four equal, annual installments beginning on February 20, 2023.
[F6]The number of derivative securities in Column 5 includes 54 vested Restricted Stock Units received in connection with the settlement of dividend equivalent rights. Dividend equivalent rights accrue with respect to these Restricted Stock Units when and as cash dividends are paid on the Company's common stock.
[F7]The Restricted Stock Units award was granted and was effective in February 2023, and vests in four equal, annual installments beginning on February 20, 2024.
[F8]Includes 60 Restricted Stock Units received in connection with the settlement of dividend equivalent rights.
[F9]The number of derivative securities in Column 5 includes 46 vested Restricted Stock Units received in connection with the settlement of dividend equivalent rights. Dividend equivalent rights accrue with respect to these Restricted Stock Units when and as cash dividends are paid on the Company's common stock.

Signature

/s/ Melissa Sallee, Attorney-in-Fact|2026-02-24

Documents

1 file

4
wk-form4_1771974642.xmlPrimary
FORM 4