#1 This transaction was executed in multiple trades at prices ranging from $167.0653 to $167.05 per share. The reported price reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

#2 This transaction was executed in multiple trades at prices ranging from $165.598 to $165.612 per share. The reported price reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

#1 Shares of Plexus Corp. common stock were given as a bona fide gift.

#1 Shares of Plexus Corp. common stock held in the Plexus Corp. 401(k) Savings Plan as of the date of the transaction.

#1 Based on Company performance during the three-year performance period, 118.5% of the portion of the Performance Stock Units ("PSUs") granted in fiscal 2022 related to economic return goals vested. The three-year performance period for the portion of the PSUs that vests based on the relative total shareholder return ("TSR") of the Company's common stock as compared to companies in the S&P 400 Index has yet to conclude. As previously disclosed, the reporting person had the opportunity to earn up to 200% of the targeted amount based on ER originally reported and has the opportunity to earn up to 150% of the targeted amount based on TSR originally reported.