---
schema_version: "secwatch.filing_event.v1"
accession: "0000099780-23-000123"
form_type: "8-K"
ticker: "TRN"
cik: "0000099780"
company_name: "TRINITY INDUSTRIES INC"
filed_at: "2023-09-07T23:59:59+00:00"
generated_at: "2026-06-10T23:11:20.994640+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Trinity Industries board reduces from 9 to 8 directors, eliminates vacancy

## Summary
- Board amended Section 1 of Article III of Bylaws on September 6, 2023.
- Number of directors reduced from nine to eight, effective immediately.
- Action eliminates a vacancy; no currently serving directors are affected.

## SEC filing metadata
- accession: 0000099780-23-000123
- form_type: 8-K
- ticker: TRN
- cik: 0000099780
- company_name: TRINITY INDUSTRIES INC
- filed_at: 2023-09-07T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/99780/000009978023000123/0000099780-23-000123-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/99780/000009978023000123/trn-20230906.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000099780-23-000123
- JSON: https://secwatch.observer/filing/0000099780-23-000123.json
- Plain text: https://secwatch.observer/filing/0000099780-23-000123.txt

## Key facts
- Governance Changes
  TRINITY INDUSTRIES INC: Reduced the authorized number of directors from nine to eight (effective 2023-09-06).
  - Change: bylaw amendment
  - Effective: 2023-09-06
  source text: On September 6, 2023, the Board of Directors (the “Board”) of Trinity Industries, Inc. (the “Company”) amended Section 1 of Article III of the Company’s Bylaws to reduce the number of directors constituting the Board from nine (9) to eight (8), effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/99780/000009978023000123/0000099780-23-000123-index.htm

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