FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   Mihm Oliver K. 2. Date of Event Requiring Statement (Month/Day/Year) 02/12/2014 3. Issuer Name and Ticker or Trading Symbol PLEXUS CORP [PLXS] (Last) (First) (Middle) ONE PLEXUS WAY 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Sr VP-Global Engineering Servs 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) NEENAH, WI 54956 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock, $.01 par value 277 D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Appreciation Rights	01/23/2013(1)	01/23/2019	Common Stock	292	$ 36.79	D	Â
Stock Appreciation Rights	04/23/2013(1)	04/23/2019	Common Stock	292	$ 31.7	D	Â
Stock Appreciation Rights	07/23/2013(1)	07/23/2019	Common Stock	292	$ 27.86	D	Â
Stock Appreciation Rights	10/29/2013(1)	10/29/2019	Common Stock	293	$ 25.965	D	Â
Stock Appreciation Rights	01/21/2014(1)	01/21/2020	Common Stock	333	$ 26.15	D	Â
Stock Appreciation Rights	04/22/2014(1)	04/22/2020	Common Stock	666	$ 25.325	D	Â
Stock Appreciation Rights	07/22/2014(1)	07/22/2020	Common Stock	666	$ 33.055	D	Â
Stock Appreciation Rights	10/28/2014(1)	10/28/2020	Common Stock	667	$ 40.224	D	Â
Restricted Stock Units	01/23/2015	01/23/2015	Common Stock	1,400	$ (2)	D	Â
Restricted Stock Units	01/21/2016	01/21/2016	Common Stock	1,600	$ (2)	D	Â
Restricted Stock Units	01/20/2017	01/20/2017	Common Stock	3,600	$ (2)	D	Â
Options To Buy	05/17/2007(3)	05/17/2016	Common Stock	2,600	$ 42.515	D	Â
Options To Buy	01/20/2015(3)	01/20/2024	Common Stock	1,700	$ 40.64	D	Â
Performance Stock Units	  (4)	  (4)	Common Stock	2,100	$ (4)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Mihm Oliver K. ONE PLEXUS WAY NEENAH, WI 54956	Â	Â	  Sr VP-Global Engineering Servs	Â

Signatures

Oliver K. Mihm, By Mary J. Bathke, Attorney-in-fact		02/20/2014
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Stock Appreciation Rights granted under the Plexus Corp. 2008 Long-Term Incentive Plan, which qualifies under Rule 16b-3; one half of the original grant vests each year, commencing on the first anniversary of grant date.
(2)	Each Restricted Stock Unit granted under the Plexus Corp. 2008 Long-Term 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 three years from the date granted.
(3)	Options granted under the Plexus Corp. 2008 Long-Term Incentive Plan or a predecessor plan, which qualify under Rule 16b-3. The option to purchase 2,600 shares at $42.515 is fully vested; one half of the options to purchase 1,700 shares at $40.64 vests each year, commencing on the first anniversary of grant.
(4)	Each Performance Stock Unit granted under the Plexus Corp. 2008 Long-Term Incentive Plan, which qualifies under Rule 16b-3, represents a contingent right to receive one share of Plexus Corp. common stock if certain conditions are satisfied. Vesting of the Performance Stock Units is dependent on the relative total shareholder return ("TSR") of Plexus Corp.'s common stock during a three-year performance period (fiscal 2014 through fiscal 2016) as compared to the Russell 3000 Index. The target number of Performance Stock Units that may be earned is reported above; the maximum amount is 200% of the number reported.

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