Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

(e) On August 7, 2009, Plexus Corp. and John Nussbaum, a Plexus director, entered into a Third Amendment to the Supplemental Executive Retirement Agreement (the "Amendment"). The Supplemental Executive Retirement Agreement, as previously amended (the "SERP"), was originally entered into between Plexus and Mr. Nussbaum on September 19, 1996, when Mr. Nussbaum was an executive officer of Plexus. The Amendment was entered into to align the SERP's provisions regarding the determination of payment amounts with the manner in which the SERP has operated in practice. The Amendment is effective as of July 26, 2009 to provide a fiscal month-end cut off.

The text of the Amendment is attached as an exhibit to this report, and the descriptions of the Amendment herein are qualified by reference to that text.

Item 9.01 Financial Statements and Exhibits.

See the following Exhibit Index, which is incorporated herein by reference.

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