---
schema_version: "secwatch.filing_event.v1"
accession: "0001637880-26-000042"
form_type: "8-K"
ticker: null
cik: "0001637880"
company_name: "Tri-State Generation & Transmission Association, Inc."
filed_at: "2026-09-15T16:29:53+00:00"
generated_at: "2026-09-15T16:30:41.680024+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Tri-State board loses two directors: Lucas Bear deceased, Robert Brockman ineligible

## Summary
- Lucas Bear, NRPPD's director on Tri-State's board, died unexpectedly on September 11, 2026.
- Robert Brockman, Wheatland's director, stepped down from Wheatland's board on Sept 14, 2026; no longer eligible per bylaws.
- Neither NRPPD nor Wheatland has yet named a replacement for Tri-State's board.

## SEC filing metadata
- accession: 0001637880-26-000042
- form_type: 8-K
- cik: 0001637880
- company_name: Tri-State Generation & Transmission Association, Inc.
- filed_at: 2026-09-15T16:29:53+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1637880/000163788026000042/0001637880-26-000042-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1637880/000163788026000042/tris-20260911.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001637880-26-000042
- JSON: https://secwatch.observer/filing/0001637880-26-000042.json
- Plain text: https://secwatch.observer/filing/0001637880-26-000042.txt

## Key facts
- Executive change
  Robert Brockman departed as Director at Tri-State Generation & Transmission Association, Inc..
  - Action: stepped down
  - Role: Director
  source text: On September 14, 2026, Tri-State received notification that Robert Brockman, the director representing Wheatland Rural Electric Association (“Wheatland”) on Tri-State’s Board of D irectors, has stepped down from Wheatland’s board of directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1637880/000163788026000042/0001637880-26-000042-index.htm
- Executive change
  Lucas Bear departed as Director at Tri-State Generation & Transmission Association, Inc..
  - Action: passed away
  - Role: Director
  source text: On September 11, 2026, Tri-State received the tragic news that Lucas Bear , the director representing Northwest Rural Public Power District (“NRPPD”) on Tri-State’s Board of D irectors, unexpectedly passed away.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1637880/000163788026000042/0001637880-26-000042-index.htm

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