X0306 4 2019-01-21 0 0000785786 PLEXUS CORP PLXS 0001223194 DRURY DAVID J ONE PLEXUS WAY NEENAH WI 54956 1 0 0 0 Common Stock, $.01 par value 15589 D Restricted Stock Units 2019-01-21 4 A 0 2562 A Common Stock 2562 2562 D Restricted Stock Units 2019-01-22 4 M 0 2056 D Common Stock 2056 0 D Deferred Stock Units 2019-01-22 4 M 0 2056 A Common Stock 2056 2056 D Each Restricted Stock Unit granted under the Plexus Corp. 2016 Omnibus Incentive Plan, which qualifies under Rule 16b-3, represents a contingent right to receive one share of Plexus Corp. common stock. The Restricted Stock Units vest on January 21, 2020. Conversion of Restricted Stock Units on vesting into Deferred Stock Units pursuant to the reporting person's deferral election. Each Deferred Stock Unit represents a right to receive one share of Plexus Corp. common stock. The reporting person will begin to receive the underlying shares within 10 days following the earliest of termination of service as a director, a change in control or the date specified on the reporting person's deferral election. David J. Drury, by Kate A. Gitter, Attorney-in-Fact 2019-01-23