---
schema_version: "secwatch.filing_event.v1"
accession: "0001637880-26-000022"
form_type: "8-K"
ticker: null
cik: "0001637880"
company_name: "Tri-State Generation & Transmission Association, Inc."
filed_at: "2026-04-29T23:59:59+00:00"
generated_at: "2026-05-15T02:01:05.712626+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Tri-State CAO/CHRO Elda de la Peña to retire Dec 2026 after 29 years

## Summary
- Elda de la Peña, Chief Administrative Officer and CHRO, notified Tri-State of retirement plans.
- Retirement effective December 2026 after more than 29 years of service.
- Tri-State will initiate a search for a successor to both roles.

## SEC filing metadata
- accession: 0001637880-26-000022
- form_type: 8-K
- cik: 0001637880
- company_name: Tri-State Generation & Transmission Association, Inc.
- filed_at: 2026-04-29T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1637880/000163788026000022/0001637880-26-000022-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1637880/000163788026000022/tris-20260427.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001637880-26-000022
- JSON: https://secwatch.observer/filing/0001637880-26-000022.json
- Plain text: https://secwatch.observer/filing/0001637880-26-000022.txt

## Key facts
- Executive change
  Elda de la Peña departed as Chief Administrative Officer and Chief Human Resources Officer at Tri-State Generation & Transmission Association, Inc..
  - Action: retire
  - Role: Chief Administrative Officer and Chief Human Resources Officer
  source text: On April 27, 2026, Tri-State Generation and Transmission Association, Inc. (“Tri-State”) received notice from its Chief Administrative Officer and Chief Human Resources Officer, Elda de la Peña, that she intends to retire in December 2026 after more than 29 years of service with Tri-State.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1637880/000163788026000022/0001637880-26-000022-index.htm

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