Atkore Inc. Merger Transaction

On October 19, 2026, Atkore Inc. completed a merger with Prysmian S.p.A. As part of the agreement, each share of Atkore's common stock was converted into $95.00 in cash. This transaction included the cancellation and conversion of outstanding deferred stock units (DSUs) and restricted stock units (RSUs) into cash payments equal to the merger consideration multiplied by the number of shares underlying the units. The merger resulted in Atkore becoming a wholly owned subsidiary of Prysmian S.p.A. This filing details the post-transaction share ownership following these events.