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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(Print or Type Responses)

1. Name and Address of Reporting Person * PETERSON GLEN A   2. Issuer Name and Ticker or Trading Symbol SEAGATE TECHNOLOGY [STX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Sr. VP, Worldwide Finance (Last) (First) (Middle) 920 DISC DRIVE, ATTN: STOCK PLAN ADMINISTRATION 3. Date of Earliest Transaction (Month/Day/Year) 08/24/2006 (Street) SCOTTS VALLEY, CA 95067 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 Shares 08/24/2006   S   20,000 D $ 20.3514 53,843 (1) D

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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

NQ Stock Option

$ 5

01/31/2006(2)

01/31/2012

Common Shares

176,000

176,000

D

NQ Stock Option

$ 19.735

01/05/2005(3)

01/05/2014

Common shares

50,000

50,000

D

NQ Stock Option

$ 15.065

09/27/2006(4)

09/27/2012

Common shares

32,500

32,500

D

NQ Stock Option

$ 25.48

04/27/2010(5)

04/27/2013

Common Shares

200,000

200,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PETERSON GLEN A 920 DISC DRIVE ATTN: STOCK PLAN ADMINISTRATION SCOTTS VALLEY, CA 95067			Sr. VP, Worldwide Finance

Signatures

/S/ Roberta S. Cohen for Glen A. Peterson		08/25/2006
**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)	Includes 463 shares acquired at $16.218 per share under the Company's Employee Stock Purchase Plan on July 31, 2006.
(2)	Options granted to the Reporting Person under the Issuer's 2001 Share Option Plan are subject to a five-year vesting schedule. One fifth of the option shares will vest on January 31, 2006. The remaining option shares will vest on January 31, 2007.
(3)	Options granted to the Reporting Person under the Issuer's 2001 Share Option Plan are subject to a five-year vesting schedule. One fifth of the option shares vested on January 5, 2005. The remaining option shares are vesting proportionally each month over the 48 months following January 5, 2005.
(4)	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 will vest on September 27, 2006. The remaining option shares will vest proportionally each month over the 36 months following September 27, 2006.
(5)	Options granted to the Reporting Person under the Issuer's 2004 Stock Compensation Plan are subject to a five-year vesting schedule. One half of the option shares will vest on April 27, 2010. The balance of the option shares will vest on April 27, 2011.

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