---
schema_version: "secwatch.filing_event.v1"
accession: "0001739445-26-000120"
form_type: "8-K"
ticker: "ACA"
cik: "0001739445"
company_name: "Arcosa, Inc."
filed_at: "2026-07-15T20:25:30+00:00"
generated_at: "2026-07-15T20:26:03.386609+00:00"
event_type: "regulatory"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Arcosa receives MSHA 107(a) order at Stavola Bound Brook Quarry; terminated same day

## Summary
- Order issued July 14, 2026, after material fell from highwall during drilling at Bridgewater, NJ quarry.
- Track drill withdrawn for highwall integrity evaluation; order terminated shortly after inspection.
- No injuries; operations resumed after relocating the track drill.
- Third-party driller and blaster, Company personnel, and MSHA inspector consulted to resolve condition.

## SEC filing metadata
- accession: 0001739445-26-000120
- form_type: 8-K
- ticker: ACA
- cik: 0001739445
- company_name: Arcosa, Inc.
- filed_at: 2026-07-15T20:25:30+00:00
- event_type: regulatory
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 1.04
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1739445/000173944526000120/0001739445-26-000120-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1739445/000173944526000120/aca-20260714.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001739445-26-000120
- JSON: https://secwatch.observer/filing/0001739445-26-000120.json
- Plain text: https://secwatch.observer/filing/0001739445-26-000120.txt

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