---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-071021"
form_type: "8-K"
ticker: "PNW"
cik: "0000764622"
company_name: "PINNACLE WEST CAPITAL CORP"
filed_at: "2026-06-05T20:44:35+00:00"
generated_at: "2026-06-05T20:45:07.844159+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Pinnacle West extends forward sale maturity to 24 months in ATM equity program

## Summary
- On June 5, 2026, Pinnacle West amended its Equity Distribution Agreement to extend forward sale maturity from 18 to 24 months.
- Total ATM program limit remains $900M; ~$630M already sold, leaving ~$270M available.
- No changes to parties, commission rates, or other terms of the agreement.
- The amendment only extends the outside maturity period for forward sale agreements.

## SEC filing metadata
- accession: 0001104659-26-071021
- form_type: 8-K
- ticker: PNW
- cik: 0000764622
- company_name: PINNACLE WEST CAPITAL CORP
- filed_at: 2026-06-05T20:44:35+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/764622/000110465926071021/0001104659-26-071021-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/764622/000110465926071021/tm2616952d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-071021
- JSON: https://secwatch.observer/filing/0001104659-26-071021.json
- Plain text: https://secwatch.observer/filing/0001104659-26-071021.txt

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