# Filing Detail

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001628280-26-023518
Filing Date
2026-04-03
Accepted
2026-04-03 11:38:57
Documents
24

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | DEFA14A | a2026pinnaclewestdefa14a.htm | DEFA14A | 19632
2 |  | a1.jpg | GRAPHIC | 1441
3 |  | a2.jpg | GRAPHIC | 1060
4 |  | a3.jpg | GRAPHIC | 14038
5 |  | annual_meetingxpagexproof02.jpg | GRAPHIC | 102539
6 |  | investors_proxyxinfoxpagex.jpg | GRAPHIC | 124369
7 |  | pinnaclewestcapitalcorpora.jpg | GRAPHIC | 329011
8 |  | pinnaclewestcapitalcorporaa.jpg | GRAPHIC | 516561
9 |  | proxyspringpresentationv2.jpg | GRAPHIC | 152346
10 |  | slide10.jpg | GRAPHIC | 179631
11 |  | slide11.jpg | GRAPHIC | 121695
12 |  | slide12.jpg | GRAPHIC | 139135
13 |  | slide13.jpg | GRAPHIC | 187961
14 |  | slide14.jpg | GRAPHIC | 127194
15 |  | slide15.jpg | GRAPHIC | 119431
16 |  | slide16.jpg | GRAPHIC | 105779
17 |  | slide2.jpg | GRAPHIC | 472750
18 |  | slide3.jpg | GRAPHIC | 170300
19 |  | slide4.jpg | GRAPHIC | 129999
20 |  | slide5.jpg | GRAPHIC | 131418
21 |  | slide6.jpg | GRAPHIC | 92365
22 |  | slide7.jpg | GRAPHIC | 127974
23 |  | slide8.jpg | GRAPHIC | 175193
24 |  | slide9.jpg | GRAPHIC | 177185
| Complete submission text file | 0001628280-26-023518.txt |  | 5117507

Mailing Address 400 NORTH FIFTH STREET MS 8695 PHOENIX AZ 85004
Business Address 400 NORTH FIFTH STREET MS 8695 PHOENIX AZ 85004 602 250 1000
PINNACLE WEST CAPITAL CORP (Filer) CIK: 0000764622 (see all company filings)

EIN.: 860512431 | State of Incorp.: AZ | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 001-08962 | Film No.: 26837216
SIC: 4911 Electric Services
(CF Office: 01 Energy & Transportation)