Pinnacle West Capital SEC Filings

This page lists 60 recent SEC filings by Pinnacle West Capital (PNW), including 30 4, 17 8-K, 4 424B5, 3 SCHEDULE 13G. The latest annual report (10-K) was filed on Feb 25, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 4, 2026.

The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Sep 30, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.