FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * FOATE DEAN A   2. Issuer Name and Ticker or Trading Symbol PLEXUS CORP [PLXS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 55 JEWELERS PARK DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 02/13/2006 (Street) NEENAH, WI 54956 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $.01 par value 02/13/2006   M   5,000 A $ 3.375 48,300 D   Common Stock, $.01 par value 02/13/2006   S   5,000 D $ 29.5 43,300 D (1)   Common Stock, $.01 par value 02/14/2006   M   5,000 A $ 3.375 48,300 D   Common Stock, $.01 par value 02/14/2006   S   5,000 D $ 30 43,300 D (1)   Common Stock, $.01 par value               8,140 D (2)   Common Stock, $.01 par value               4,000 I Adult childrens' accounts (3) Common Stock, $.01 par value               15,827 I 401(k) (4)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Option to buy (5)

$ 3.375

02/13/2006

M

5,000

08/14/1996

08/14/2006

Common Stock

15,000

(1) (5)

10,000

D

Option to buy (5)

$ 3.375

02/14/2006

M

5,000

08/14/1996

08/14/2006

Common Stock

10,000

(1) (5)

5,000

D

Option to buy (5)

$ 6.1563

03/18/1997

03/18/2007

Common Stock

30,000

30,000

D

Option to buy (5)

$ 10.594

04/23/1998

04/23/2008

Common Stock

15,000

15,000

D

Option to buy (5)

$ 15.125

04/21/1999

04/21/2009

Common Stock

20,000

20,000

D

Option to buy (5)

$ 35.5469

04/24/2000

04/24/2010

Common Stock

20,000

20,000

D

Option to buy (5)

$ 23.55

04/06/2001

04/06/2011

Common Stock

30,000

30,000

D

Option to buy (5)

$ 25.285

04/22/2002

04/22/2012

Common Stock

100,000

100,000

D

Option to buy (5)

$ 8.975

01/30/2003

01/30/2013

Common Stock

75,000

75,000

D

Option to buy (5)

$ 14.015

08/14/2003

08/14/2013

Common Stock

45,000

45,000

D

Option to buy (5)

$ 15.825

04/28/2004

04/28/2014

Common Stock

75,000

75,000

D

Option to buy (5)

$ 12.94

05/18/2005

05/18/2015

Common Stock

100,000

100,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
FOATE DEAN A 55 JEWELERS PARK DRIVE NEENAH, WI 54956	X		President and CEO

Signatures

Dean A. Foate, by Joseph D. Kaufman, Attorney-in-Fact		02/14/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Sold pursuant to a 10b5-1 contract adopted on 2/13/06.
(2)	Shares of Plexus Corp. common stock held in the Plexus Corp. Employee Stock Purchase Plan as of December 31, 2005, the last date of a statement from the Plan's Trustee.
(3)	Held in accounts for Mr. Foate's adult children who reside in his household.
(4)	Shares of Plexus Corp. common stock held in the Plexus Corp. Employee Stock Savings Plan, as of December 31, 2005, the last date of a statement from the Plan's Trustee.
(5)	Option granted under the Plexus Corp. 2005 Equity Incentive Plan, or a predecessor plan, which qualifies under Rule 16b-3.

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