Ownership Submission
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 *
FOSBURGH BRYN
   2. Issuer Name and Ticker or Trading Symbol
TRIMBLE NAVIGATION LTD /CA/ [TRMB] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President
(Last)
(First)
(Middle)
C/O TIMBLE NAVIGATION LTD, 935 STEWART DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
04/14/2010
(Street)

SUNNYVALE, CA 94085		 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 Stock 04/14/2010   M   500 A $ 5.1134 14,225 (1) D  
Common Stock 04/14/2010   S(2)   500 D $ 30 13,725 (1) D  
Common Stock 04/14/2010   M   1,500 A $ 4.2667 15,225 (1) D  
Common Stock 04/14/2010   S(2)   1,500 D $ 30 13,725 (1) D  
Common Stock 04/14/2010   M   994 A $ 8.5 14,719 (1) D  
Common Stock 04/14/2010   S(2)   994 D $ 30 13,725 (1) D  
Common Stock 04/14/2010   M   17,754 A $ 8.5 31,479 (1) D  
Common Stock 04/14/2010   S(2)   17,754 D $ 30.0059 (3) 13,725 (1) D  
Common Stock 04/14/2010   M   11,381 A $ 14.53 25,106 (1) D  
Common Stock 04/14/2010   S(2)   11,381 D $ 30 13,725 (1) D  
Common Stock 04/14/2010   M   4,500 A $ 16.995 18,225 (1) D  
Common Stock 04/14/2010   S(2)   4,500 D $ 30 13,725 (1) D  
Common Stock 04/14/2010   M   18,000 A $ 16.995 31,725 (1) D  
Common Stock 04/14/2010   S(2)   18,000 D $ 30.0096 (3) 13,725 D  
Common Stock 04/14/2010   M   24,620 A $ 14.53 38,345 (1) D  
Common Stock 04/14/2010   S(2)   24,620 D $ 30.0391 (5) 13,725 (1) D  
Common Stock 04/14/2010   M   11,695 A $ 23.4413 25,420 (1) D  
Common Stock 04/14/2010   S(2)   11,695 D $ 30.0231 (6) 13,725 (1) D  
Common Stock 04/15/2010   M   26,805 A $ 23.4413 40,530 (1) D  
Common Stock 04/14/2010   S(2)   26,805 D $ 30.0163 (7) 13,725 (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
Employee Stock Option $ 5.1134 04/14/2010   M     500   (4) 06/12/2012 Common Stock 500 $ 0 0 D  
Employee Stock Option $ 4.2667 04/14/2010   M     1,500   (4) 07/23/2012 Common Stock 1,500 $ 0 0 D  
Employee Stock Option $ 8.5 04/14/2010   M     994   (4) 07/16/2013 Common Stock 994 $ 0 0 D  
Employee Stock Option $ 8.5 04/14/2010   M     17,754   (4) 07/16/2013 Common Stock 17,754 $ 0 0 D  
Employe Stock Option $ 14.53 04/14/2010   M     11,381   (4) 10/22/2014 Common Stock 11,381 $ 0 1,264 D  
Employee Stock Option $ 16.995 04/14/2010   M     4,500   (4) 12/20/2015 Common Stock 4,500 $ 0 2,833 D  
Employee Stock Option $ 16.995 04/14/2010   M     18,000   (4) 12/20/2015 Common Stock 18,000 $ 0 11,333 D  
Employee Stock Option $ 14.53 04/14/2010   M     24,620   (4) 10/22/2014 Common Stock 24,620 $ 0 2,735 D  
Employee Stock Option $ 23.4413 04/14/2010   M     11,695   (8) 10/20/2013 Common Stock 11,695 $ 0 58,305 D  
Employee Stock Option $ 23.4413 04/15/2010   M     26,805   (8) 10/20/2013 Common Stock 26,805 $ 0 31,500 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
FOSBURGH BRYN
C/O TIMBLE NAVIGATION LTD
935 STEWART DRIVE
SUNNYVALE, CA 94085		       Vice President  

Signatures

 /s/ Bryn Fosburgh   04/15/2010
**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 504 shares acquired under the Trimble Navigation stock purchase plan of February 26, 2010.
(2) The sale reported in this Form 4 was affected pursuant to a Rule 10b5-1 plan adopted by the reporting person on September 1, 2009.
(3) The price reported in the weighted average sale price of shares sales occurring at prices ranging from $30.00 to $30.02. Upon request from the SEC or a stockholder of the issuer, the reporting person will provide information on the number of shares sold of each separate price.
(4) This option is exercisable 20% at the end of the first year and 1.67% a month thereafter.
(5) The price reported is the weighted average sale price of shares sales occurring at prices ranging from $30.025 to $30.0775. Upon request from the SEC or a stockholder of the issuer, the reporting person will provide information on the number of shares sold of each separate price.
(6) The price reported is the weighted average sale price of shares sales occurring at prices ranging from $30.01 to $30.04. Upon request from the SEC or a stockholder of the issuer, the reporting person will provide information on the number of shares sold of each separate price.
(7) The price reported is the weighted average sale price of shares sales occurring at prices ranging from $30.00 to $30.04. Upon request from the SEC or a stockholder of the issuer, the reporting person will provide information on the number of shares sold of each separate price.
(8) This option vests 40% after two years and 1.67% a month thereafter.

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