Form 3 Filing for PLEXUS CORP

This filing reports on the ownership of PLEXUS CORP common stock by David Westen Abuhl, Sr. VP & CFO. The report details holdings of Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) granted under the Plexus Corp. 2024 Omnibus Incentive Plan. RSUs granted on September 15, 2025, vest in three equal annual installments. RSUs granted on February 9, 2026, vest three years from the grant date. PSUs granted on February 9, 2026, have vesting dependent on relative total shareholder return compared to the S&P 400 Index and economic return goals over a three-year period. The maximum earn-out for PSUs is 150% of the target for TSR and 200% for ER. The filing also includes a Power of Attorney document authorizing Angelo M. Ninivaggi, Kate A. Gitter, or Carena Koeppl to execute necessary SEC forms on behalf of David Abuhl.