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FORM 4UNITED 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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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*
CHADHA KANWAR
(Last)(First)(Middle)
217 DEVCON DRIVE
(Street)
SAN JOSECA95112
(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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
VP,STRATEGIC CORP INITIATIVES
3. Date of Earliest Transaction (Month/Day/Year)
06/26/2009
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock 06/26/2009 D  825,540 D (1) 0 D  
Common Stock-Ankita Chadha 06/26/2009 D  27,200 D (1) 0 I By Daughter
Common Stock-Shivani Chadha 06/26/2009 D  27,200 D (1) 0 I By Daughter

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 Security3. 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Non-Qualified Stock Option (right to buy) $ 2 06/26/2009 D   290,000 04/10/200004/10/2010 Common Stock 290,000 (2) 0 D  
Incentive Stock Option (right to buy) $ 4 06/26/2009 D   77,791 06/17/200212/17/2011 Common Stock 77,791 (3) 0 D  
Incentive Stock Option (right to buy) $ 4 06/26/2009 D   12,604 11/01/200411/26/2013 Common Stock 12,604 (4) 0 D  
Non-Qualified Stock Option (right to buy) $ 4 06/26/2009 D   37,396 11/01/200411/26/2013 Common Stock 37,396 (5) 0 D  
Incentive Stock Option (right to buy) $ 12.51 06/26/2009 D   15,986 12/01/200512/14/2014 Common Stock 15,986 (6) 0 D  
Non-Qualified Stock Option (right to buy) $ 12.51 06/26/2009 D   120,316 12/01/200512/14/2014 Common Stock 120,316 (7) 0 D  
Non-Qualified Stock Option (right to buy) $ 25.16 06/26/2009 D   16,000 04/24/200804/24/2013 Common Stock 16,000 (8) 0 D  
Non-Qualified Stock Option (right to buy) $ 5.62 06/26/2009 D   50,000 04/29/200904/29/2018 Common Stock 50,000 (9) 0 D  
Explanation of Responses:
1. 854,940 of shares were disposed of pursuant to the Agreement and Plan of Merger, dated as of February 9, 2009 (the "Merger Agreement"), by and among CSR plc ("CSR"), Shannon Acquisition Sub, Inc., and SiRF Technology Holdings, Inc., in exchange for an aggregate of 633,510 ordinary shares of CSR having a market value of $5.74 per share (based on an exchange rate of ?1.00 = $1.6432) on the effective date of the merger. 25,000 of these shares subject to restricted stock units were assumed by CSR pursuant to the Merger Agreement and replaced with 18,525 ordinary shares of CSR, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such restricted stock units.
2. These options were assumed by CSR pursuant to the Merger Agreement and replaced with options to purchase 214,890 ordinary shares of CSR for an exercise price of $2.70 per share, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such SiRF options.
3. These options were assumed by CSR pursuant to the Merger Agreement and replaced with options to purchase 57,643 ordinary shares of CSR for an exercise price of $5.40 per share, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such SiRF options.
4. These options were assumed by CSR pursuant to the Merger Agreement and replaced with options to purchase 9,339 ordinary shares of CSR for an exercise price of $5.40 per share, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such SiRF options.
5. These options were assumed by CSR pursuant to the Merger Agreement and replaced with options to purchase 27,710 ordinary shares of CSR for an exercise price of $5.40 per share, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such SiRF options.
6. These options were assumed by CSR pursuant to the Merger Agreement and replaced with options to purchase 11,845 ordinary shares of CSR for an exercise price of $16.89 per share, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such SiRF options.
7. These options were assumed by CSR pursuant to the Merger Agreement and replaced with options to purchase 89,154 ordinary shares of CSR for an exercise price of $16.89 per share, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such SiRF options.
8. These options were assumed by CSR pursuant to the Merger Agreement and replaced with options to purchase 11,856 ordinary shares of CSR for an exercise price of $33.96 per share, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such SiRF options.
9. These options were assumed by CSR pursuant to the Merger Agreement and replaced with options to purchase 37,050 ordinary shares of CSR for an exercise price of $7.59 per share, subject to the same terms and conditions (including applicable vesting requirements and deferral provisions) as applied to such SiRF options.
/s/ Dennis Bencala For: Kanwar Chadha06/29/2009
** Signature of Reporting PersonDate
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

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