---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-342356"
form_type: "8-K"
ticker: null
cik: "0000081018"
company_name: "PUBLIC SERVICE CO OF COLORADO"
filed_at: "2026-08-10T20:06:18+00:00"
generated_at: "2026-08-10T20:08:42.909768+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# PSCo issues $800M in First Mortgage Bonds: $150M at 5.35% due 2034, $650M at 6.20% due 2056

## Summary
- Issued $150M of 5.35% First Mortgage Bonds Series No. 41 due May 15, 2034 on Aug 10, 2026.
- Issued $650M of 6.20% First Mortgage Bonds Series No. 47 due Aug 15, 2056 on same date.
- Underwriters: J.P. Morgan Securities, Mizuho Securities, PNC Capital Markets, U.S. Bancorp Investments.
- 2034 Bonds are an additional tranche of existing Series No. 41; issued under S-3 registration.
- 2056 Bonds governed by Supplemental Indenture No. 39 dated Aug 1, 2026.

## SEC filing metadata
- accession: 0001193125-26-342356
- form_type: 8-K
- cik: 0000081018
- company_name: PUBLIC SERVICE CO OF COLORADO
- filed_at: 2026-08-10T20:06:18+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/81018/000119312526342356/0001193125-26-342356-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/81018/000119312526342356/d143064d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-342356
- JSON: https://secwatch.observer/filing/0001193125-26-342356.json
- Plain text: https://secwatch.observer/filing/0001193125-26-342356.txt

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