Atkore Inc. Announces Merger with Prysmian; HSR Waiting Period Cleared

What Happened
Atkore Inc. announced that on August 2, 2026 it entered into an Agreement and Plan of Merger with Prysmian S.p.A., under which a Prysmian subsidiary (Trinity Merger Sub, Inc.) will merge into Atkore and Atkore will become a wholly owned subsidiary of Prysmian upon closing. The parties filed Hart-Scott-Rodino (HSR) notifications on August 14, 2026, and the HSR waiting period expired at 11:59 p.m. Eastern Time on September 14, 2026. Completion of the transaction remains subject to customary closing conditions, including approval by a majority of outstanding Atkore common stockholders and other regulatory approvals. Atkore filed and mailed a definitive proxy statement to stockholders on or around September 9, 2026; the 8-K was signed by Daniel S. Kelly on September 15, 2026.

Key Details

• Merger Agreement signed: August 2, 2026 (Atkore, Prysmian S.p.A., Trinity Merger Sub).
• HSR filings submitted: August 14, 2026; HSR waiting period expired: September 14, 2026 at 11:59 p.m. ET.
• Stockholder approval required: affirmative vote of a majority of outstanding Atkore common shares entitled to vote.
• Proxy statement mailed to shareholders on/about September 9, 2026; Atkore directors and executive officers may be participants in the solicitation.
• Filing reiterates forward-looking statements and lists risks (e.g., regulatory approvals, shareholder vote, litigation, business disruption).

Why It Matters
The HSR clearance removes a key antitrust timing hurdle, but the deal is not final: shareholders must still approve the merger and other regulatory or closing conditions must be satisfied. Retail investors should read the proxy statement for transaction terms, potential impacts on share value, and disclosures about risks and conflicts of interest. The 8-K emphasizes that the transaction could affect Atkore’s operations, management focus and market price, and lists several risks that could prevent or delay closing.