---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-067437"
form_type: "8-K"
ticker: "PNW"
cik: "0000764622"
company_name: "PINNACLE WEST CAPITAL CORP"
filed_at: "2024-06-03T23:59:59+00:00"
generated_at: "2026-06-01T06:59:08.765870+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Pinnacle West plans $450M convertible senior notes offering due 2027

## Summary
- Offers $450M aggregate principal of convertible senior notes due 2027 in private placement to qualified institutional buyers.
- Initial purchasers have option to purchase additional $67.5M within 13 days of issuance.
- Net proceeds for general corporate purposes, including debt repayment, working capital, and investments in Arizona Public Service.
- Notes are senior unsecured; conversions settled in cash up to principal and cash/stock for excess at Pinnacle West's election.

## SEC filing metadata
- accession: 0001104659-24-067437
- form_type: 8-K
- ticker: PNW
- cik: 0000764622
- company_name: PINNACLE WEST CAPITAL CORP
- filed_at: 2024-06-03T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/764622/000110465924067437/0001104659-24-067437-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/764622/000110465924067437/tm2415602d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-067437
- JSON: https://secwatch.observer/filing/0001104659-24-067437.json
- Plain text: https://secwatch.observer/filing/0001104659-24-067437.txt

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