Sec Form 4 Filing - LUCZO STEPHEN J @ Seagate Technology plc - 2011-01-11

Insider filing report for Changes in Beneficial Ownership
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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
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
LUCZO STEPHEN J
2. Issuer Name and Ticker or Trading Symbol
Seagate Technology plc [ STX]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X __ Director _____ 10% Owner
X __ Officer (give title below) _____ Other (specify below)
Chairman, President and CEO
(Last) (First) (Middle)
SEAGATE TECHNOLOGY PLC, 10200 S. DE ANZA BOULEVARD
3. Date of Earliest Transaction (MM/DD/YY)
01/11/2011
(Street)
CUPERTINO, CA95014
4. If Amendment, Date Original Filed (MM/DD/YY)
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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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
Ordinary Shares 01/11/2012 M 20,000 A $ 4.045 58,750 D
Ordinary Shares 01/11/2012 S 20,000 D $ 18.616 ( 1 ) 38,750 D
Ordinary Shares 5,092,192 ( 2 ) I Stephen J Luczo Revocable Trust
Ordinary Shares 490,367 I Red Zone Holdings Limited Partnership
Ordinary Shares 425,951 I Red Zone II Limited Partnership
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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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
(MM/DD/YY)
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
NQ Stock Options $ 4.045 01/11/2012 M 20,000 01/12/2010( 3 ) 01/30/2016 Ordinary Shares 20,000 $ 0 1,513,750 D
Reporting Owners
Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
LUCZO STEPHEN J
SEAGATE TECHNOLOGY PLC
10200 S. DE ANZA BOULEVARD
CUPERTINO, CA95014
X Chairman, President and CEO
Signatures
/S/ Roberta S. Cohen for Stephen J. Luczo 01/13/2012
Signature of Reporting Person Date
Explanation of Responses:
( 1 )Shares were sold under a 10b5-1 plan adopted by the Reporting Person on May 27, 2011.
( 2 )Includes 20,000 transferred from direct to indirect holdings on January 10, 2012. On November 8, 2011, sell to cover transaction resulted in 484,067 net shares purchased. On November 16, 2011 Reporting person transferred 464,067 shares to Luczo Revocable Trust resulting in net shares held as 58,750 shares.
( 3 )Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan are subject to a four-year vesting schedule. One quarter of the option shares vested on January 12, 2010. The remaining option shares are vesting and will continue to vest proportionally each month over the 36 months following January 12, 2010.

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* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
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