SEC FORM 4/A

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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

1. Name and Address of Reporting Person^*

MCGUIRE MICHAEL

(Last)

(First)

(Middle)

55 JEWELERS PARK DRIVE

(Street)

NEENAH

54956

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
PLEXUS CORP [ PLXS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	VP-Sales & Bus. Development

3. Date of Earliest Transaction (Month/Day/Year)
05/04/2005

4. If Amendment, Date of Original Filed (Month/Day/Year)
05/04/2005

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, $.01 par value	05/04/2005		I	V	771	D	$12.22	226	I	401(k)⁽¹⁾
Common Stock, $.01 par value	05/04/2005		S		200	D	$12.31	59	D⁽²⁾

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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Option to buy⁽³⁾	$12.53							12/09/2002	12/09/2012	Common Stock	12,000		12,000	D
Optoin to buy⁽³⁾	$14.015							08/14/2003	08/14/2013	Common Stock	13,500		13,500	D
Option to buy⁽³⁾⁽⁴⁾	$15.825							04/28/2004	04/28/2014	Common Stock	15,000		15,000	D

Explanation of Responses:

1. Shares of Plexus Corp. common stock held in the Plexus Corp. Employee Stock Savings Plan, as of May 5, 2005, the last date of a statement from the Plan's Trustee.

2. 259 shares of Plexus Corp. common stock held in the Plexus Corp. Employee Stock Purchase Plan, as of March 31, 2005, the last date of a statement from the Plan's Trustee.

3. Options granted under the Plexus Corp. Stock Option Plan, which qualified under Rule 16b-3. Options vest one-third each year, commencing on the first anniversary of the grant.

4. As a result of the practices of the Comp. Committee, the exercise price of the options was determined on 4/28/04, and the grants were finalized on 6/14/04, which is deemed the date of grant for the purposes of this report since that was the date upon which the terms became fixed.

Remarks:

	Michael McGuire, by Joseph D. Kaufman, Attorney-in-Fact	05/05/2005
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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