---
schema_version: "secwatch.filing_event.v1"
accession: "0001666138-26-000027"
form_type: "8-K"
ticker: "ATKR"
cik: "0001666138"
company_name: "Atkore Inc."
filed_at: "2026-09-15T10:04:51+00:00"
generated_at: "2026-09-15T10:10:27.336772+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Atkore clears HSR waiting period for Prysmian merger; stockholder vote pending

## Summary
- HSR waiting period expired Sept 14, 2026 at 11:59 p.m. ET for Prysmian S.p.A. acquisition.
- Proxy statement first mailed to Atkore stockholders on or around Sept 9, 2026.
- Merger still requires majority stockholder vote and other customary regulatory approvals.
- Merger agreement entered Aug 2, 2026; Merger Sub will merge with Atkore, which survives as Prysmian subsidiary.

## SEC filing metadata
- accession: 0001666138-26-000027
- form_type: 8-K
- ticker: ATKR
- cik: 0001666138
- company_name: Atkore Inc.
- filed_at: 2026-09-15T10:04:51+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1666138/000166613826000027/0001666138-26-000027-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1666138/000166613826000027/atkr-20260915.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001666138-26-000027
- JSON: https://secwatch.observer/filing/0001666138-26-000027.json
- Plain text: https://secwatch.observer/filing/0001666138-26-000027.txt

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