Tetlow Jacob 4

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

Insider Transaction Report

Form 4

Period: 2026-02-20

PINNACLE WEST CAPITAL CORPPNW

Tetlow Jacob

Other

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-02-20+781→ 837 total
Disposition to Issuer
Common Stock
[F2]
2026-02-20$98.34/sh−127$12,489→ 710 total
Tax Payment
Common Stock
[F3]
2026-02-20$98.34/sh−294$28,912→ 416 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+1,408→ 1,824 total
Disposition to Issuer
Common Stock
[F2]
2026-02-20$98.34/sh−168$16,521→ 1,656 total
Tax Payment
Common Stock
[F3]
2026-02-20$98.34/sh−532$52,317→ 1,124 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+1,531→ 2,655 total
Disposition to Issuer
Common Stock
[F2]
2026-02-20$98.34/sh−120$11,801→ 2,535 total
Tax Payment
Common Stock
[F3]
2026-02-20$98.34/sh−605$59,496→ 1,930 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+1,389→ 3,319 total
Disposition to Issuer
Common Stock
[F2]
2026-02-20$98.34/sh−54$5,310→ 3,265 total
Tax Payment
Common Stock
[F3]
2026-02-20$98.34/sh−573$56,349→ 2,692 total
Exercise/Conversion
Restricted Stock Units
[F1][F4][F5]
2026-02-20−781→ 0 total
→ Common Stock (781 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F6][F7][F8]
2026-02-20−1,408→ 1,407 total
→ Common Stock (1,408 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F9][F10][F11]
2026-02-20−1,531→ 3,061 total
→ Common Stock (1,531 underlying)
Exercise/Conversion
Restricted Stock Units
[F1][F12][F13][F14]
2026-02-20−1,389→ 4,165 total
→ Common Stock (1,389 underlying)

Holdings

Common Stock
(indirect: By 401(k))
2,471

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 239 Restricted Stock Units received in connection with the settlement of dividend equivalent rights.
[F12]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.
[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 160 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 127 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 168 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 167 Restricted Stock Units received in connection with the settlement of dividend equivalent rights.
[F9]The number of derivative securities in Column 5 includes 120 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_1771983764.xmlPrimary
FORM 4