---
schema_version: "secwatch.filing_event.v1"
accession: "0001739445-21-000130"
form_type: "8-K"
ticker: "ACA"
cik: "0001739445"
company_name: "Arcosa, Inc."
filed_at: "2021-09-23T23:59:59+00:00"
generated_at: "2026-06-29T01:49:23.650284+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Director David W. Biegler retires from Arcosa Board

## Summary
- David W. Biegler retired as director effective September 21, 2021.
- Retirement not due to disagreement with the Board or Company.
- No replacement director announced.

## SEC filing metadata
- accession: 0001739445-21-000130
- form_type: 8-K
- ticker: ACA
- cik: 0001739445
- company_name: Arcosa, Inc.
- filed_at: 2021-09-23T23:59:59+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/1739445/000173944521000130/0001739445-21-000130-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1739445/000173944521000130/aca-20210921.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001739445-21-000130
- JSON: https://secwatch.observer/filing/0001739445-21-000130.json
- Plain text: https://secwatch.observer/filing/0001739445-21-000130.txt

## Key facts
- Executive change
  David W. Biegler retired as Director at Arcosa, Inc..
  - Action: retired
  - Role: Director
  source text: On September 21, 2021, David W. Biegler notified Arcosa, Inc. (the "Company") of his retirement as a director and member of the Board of Directors (the "Board").
  evidence_url: https://www.sec.gov/Archives/edgar/data/1739445/000173944521000130/0001739445-21-000130-index.htm

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