Atkore-Prysmian Merger Clears HSR Antitrust Waiting Period
ATKR sits 75% above its 52-week low of $53.75.
Summary
Atkore disclosed that the HSR Act waiting period for its acquisition by Prysmian expired on September 14, 2026, clearing a major antitrust hurdle. Shareholder approval and other regulatory approvals remain outstanding.
Key Events · M&A and Partnerships · ATKR
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HSR Waiting Period Expired
The Hart-Scott-Rodino antitrust waiting period for the Prysmian acquisition expired effective 11:59 p.m. Eastern Time on September 14, 2026.
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Merger Still Subject to Conditions
Completion remains subject to shareholder approval at the special meeting and receipt of other regulatory approvals.
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Shareholder Vote Scheduled
The definitive proxy statement was mailed on September 9, 2026, with a special shareholder meeting set for October to vote on the $95 per share all-cash merger.
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Prior Disclosure Context
The merger agreement was announced on August 2, 2026, and the HSR notifications were filed on August 14, 2026.
Analysis · ATKR · Manufacturing
The HSR Act waiting period for the $95 per share all-cash acquisition of Atkore by Prysmian expired on September 14, 2026, removing a key regulatory hurdle. The merger still requires shareholder approval at the special meeting scheduled for October and other regulatory approvals, but antitrust clearance is a significant step toward closing.
How filings like this one have moved
In the 30 days to Sep 15, 2026, 29.9% of the 1678 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.25%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, ATKR was trading at $94.03 on NYSE in the Manufacturing sector, with a market capitalization of approximately $3.2B. The 52-week trading range was $53.75 to $94.39. This filing was assessed with positive market sentiment and an importance score of 7 out of 10.