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*
AMARAL WALTER
(Last) (First) (Middle)
148 EAST BROKAW ROAD
(Street)
SAN JOSE CA 95112
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
SIRF TECHNOLOGY HOLDINGS INC [ SIRF ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Senior V.P. and CFO
3. Date of Earliest Transaction (Month/Day/Year)
11/15/2005
4. If Amendment, Date of 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
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 11/15/2005 M 10,000 A $2.25 10,000 D
Common Stock 11/15/2005 S 10,000 D $26.75 0 D
Common Stock 11/17/2005 M 7,924 A $2.25 7,924 D
Common Stock 11/17/2005 S 7,924 D $26.05 0 D
Common Stock 11/17/2005 M 10,000 A $2.25 10,000 D
Common Stock 11/17/2005 S 10,000 D $25.86 0 D
Common Stock 11/17/2005 M 5,000 A $2.25 5,000 D
Common Stock 11/17/2005 S 5,000 D $25.75 0 D
Common Stock 11/17/2005 M 5,000 A $2.25 5,000 D
Common Stock 11/17/2005 S 5,000 D $25.6 0 D
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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Qualified Stock Option (right to buy) $2.25 11/15/2005 M 10,000 02/14/2001(1) 09/08/2010 Common Stock 10,000 $0 185,556 D
Non-Qualified Stock Option (right to buy) $2.25 11/17/2005 M 7,924 02/14/2001(1) 09/08/2010 Common Stock 7,924 $0 177,632 D
Non-Qualified Stock Option (right to buy) $2.25 11/17/2005 M 10,000 02/14/2001(1) 09/08/2010 Common Stock 10,000 $0 167,632 D
Non-Qualified Stock Option (right to buy) $2.25 11/17/2005 M 5,000 02/14/2001(1) 09/08/2010 Common Stock 5,000 $0 162,632 D
Non-Qualified Stock Option (right to buy) $2.25 11/17/2005 M 5,000 02/14/2001(1) 09/08/2010 Common Stock 5,000 $0 157,632 D
Incentive Stock Option (right to buy) $2.25 02/14/2001(1) 09/08/2010 Common Stock 44,444 44,444 D
Incentive Stock Option (right to buy) $4 06/17/2002(2) 12/17/2011 Common Stock 34,875 34,875 D
Incentive Stock Option (right to buy) $12.51 12/01/2005(3) 12/14/2014 Common Stock 21,431 21,431 D
Non-Qualified Stock Option (right to buy) $12.51 12/01/2005(3) 12/14/2014 Common Stock 120,600 120,600 D
Explanation of Responses:
1. When the ISO and NQ grants dated 09/08/00 totaling 390,000 shares are combined, such shares vest as to 48,750 shares on 02/14/01 and monthly thereafter from 02/14/01 until 08/14/04. Options are immediately exercisable but not fully vested and until fully vested, if exercised, would be subjuct to repurchase by the Company as to the unvested shares.
2. Consists of two different grants dated 12/17/01 for 31,875 and 3,000 shares. Of such 31,875 shares, vests as to 3,985 shares on 06/17/02 and monthly thereafter from 06/17/02 until 12/17/05. Option becomes exercisable as it vests. Of such 3,000 shares, vests and becomes exercisable on 12/17/02.
3. When the ISO and NQ grants dated 12/14/04 totaling 142,031 shares are combined, such shares vest as to 42,031 shares on 12/1/05, 50,000 shares on 12/1/06, and 50,000 shares on 12/1/07. Options become exercisable as they vest.
By: Dennis Bencala For: Walter Amaral 11/17/2005
** 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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