Atkore merger with Prysmian advances as HSR waiting period expires
The U.S. antitrust waiting period for Prysmian’s proposed acquisition of Atkore has expired, allowing the merger process to advance. The next setup is execution risk around the remaining transaction conditions rather than the initial U.S. waiting-period review.
Investing.com reported on September 15 that the Hart-Scott-Rodino waiting period for Prysmian’s planned merger with Atkore has expired. The development removes that U.S. procedural hurdle, but the report did not disclose whether any other regulatory, shareholder or closing conditions remain outstanding.
The transaction comes as Atkore’s latest reported annual results show revenue of $2.9 billion, down 11.0% year over year, with a -0.5% net margin and diluted EPS of $-0.45 for the fiscal year ended September 30, 2025. Those figures describe Atkore’s standalone financial position and are not merger terms or current-quarter results.
For ATKR, the direct mechanism is transaction completion: the company is the acquisition target, so the HSR expiration advances the path toward a change of control rather than changing its operating outlook. Prysmian’s economics, consideration structure and any remaining conditions were not detailed in the report.
The evidence is limited to the reported expiration of the waiting period. Investing.com did not say whether the Department of Justice or Federal Trade Commission imposed conditions, sought additional remedies, or had completed every other review; it also did not state a closing date or consideration per share.
The next concrete markers are any remaining regulatory decisions, shareholder or court approvals and the closing announcement. The key open questions are the transaction terms, the timetable and whether any further conditions could delay or alter completion.
The HSR clearance removes a U.S. closing hurdle for ATKR, shifting the risk toward remaining merger conditions and timing.
The immediate benefit is procedural: ATKR has cleared a U.S. antitrust waiting-period hurdle, reducing one source of completion risk without establishing the final timetable or economics. The weak annual operating backdrop—$2.9B of revenue, down 11.0% year over year, and a -0.5% net margin—makes the transaction path more important to the equity outcome, but the missing consideration and closing terms prevent a quantified directional call.
The read fails if another regulatory or transaction condition delays, changes or blocks the merger, or if the final consideration is less favorable than expected.
CoverageSource: Investing.com · Published here TUE, SEP 15 · 6:22 AM ET · the only report in this recordHow this is decided →
STOCK PHOTO · PHOTO EDDIE O.Earlier context and later coverage are dated relative to this report. Automatically linked reports may cover a broader event.
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The HSR waiting-period expiration removes a stated U.S. antitrust hurdle and lets Prysmian’s proposed acquisition of ATKR advance.
Limited bear case from the reported event itself: Investing.com did not disclose the remaining conditions, closing date or consideration, so the procedural clearance does not establish that completion is secured.
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