---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-069111"
form_type: "8-K"
ticker: "PNW"
cik: "0000764622"
company_name: "PINNACLE WEST CAPITAL CORP"
filed_at: "2024-06-06T23:59:59+00:00"
generated_at: "2026-06-01T06:05:43.164345+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Pinnacle West closes $525M of 4.75% Convertible Senior Notes due 2027

## Summary
- $525M aggregate principal amount, including full exercise of initial purchasers' option.
- Notes bear 4.75% interest, payable semi-annually, maturing June 15, 2027.
- Initial conversion rate of 10.8338 shares per $1,000 principal (conversion price ~$92.30, 20% premium to last sale).
- Notes are senior unsecured obligations, convertible into cash and/or common stock at holder's option under conditions.
- Issued via private placement under Rule 144A; not registered under Securities Act.

## SEC filing metadata
- accession: 0001104659-24-069111
- form_type: 8-K
- ticker: PNW
- cik: 0000764622
- company_name: PINNACLE WEST CAPITAL CORP
- filed_at: 2024-06-06T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.03, 1.01, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/764622/000110465924069111/0001104659-24-069111-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/764622/000110465924069111/tm2413531d6_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-069111
- JSON: https://secwatch.observer/filing/0001104659-24-069111.json
- Plain text: https://secwatch.observer/filing/0001104659-24-069111.txt

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