---
schema_version: "secwatch.filing_event.v1"
accession: "0000764622-26-000046"
form_type: "8-K"
ticker: "PNW"
cik: "0000764622"
company_name: "PINNACLE WEST CAPITAL CORP"
filed_at: "2026-09-04T20:27:06+00:00"
generated_at: "2026-09-04T20:28:10.304286+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "low"
source: SEC EDGAR
---

# Pinnacle West files routine 8-K for September investor meetings; exhibit content not available

## Summary
- Pinnacle West and Arizona Public Service filed a combined 8-K for September 2026 analyst/investor meetings.
- Handouts attached as Exhibit 99.1; the exhibit text provided is truncated and contains no financial figures.
- No earnings, guidance, or material operational updates are disclosed in the filing body.
- Filing signed by Andrew Cooper, SVP and CFO, for both registrants.

## SEC filing metadata
- accession: 0000764622-26-000046
- form_type: 8-K
- ticker: PNW
- cik: 0000764622
- company_name: PINNACLE WEST CAPITAL CORP
- filed_at: 2026-09-04T20:27:06+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: low
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/764622/000076462226000046/0000764622-26-000046-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/7286/000076462226000046/pnw-20260904.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000764622-26-000046
- JSON: https://secwatch.observer/filing/0000764622-26-000046.json
- Plain text: https://secwatch.observer/filing/0000764622-26-000046.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.