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 *
MORGANS DAVID J JR
   2. Issuer Name and Ticker or Trading Symbol
CYTOKINETICS INC [CYTK] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP-Drug Discovery and Dev
(Last)
(First)
(Middle)
280 EAST GRAND AVENUE		 3. Date of Earliest Transaction (Month/Day/Year)
03/01/2006
(Street)

SOUTH SAN FRANCISCO, CA 94080		 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               20,000 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Incentive Stock Option (right to buy) $ 7.15 03/01/2006   A   15,388   03/01/2006(1) 03/01/2016 Common Stock 15,388 $ 0 15,388 D  
Non-Qualified Stock Option (right to buy) $ 7.15 03/01/2006   A   44,612   03/01/2006(1) 03/01/2016 Common Stock 44,612 $ 0 44,612 D  
Incentive Stock Option (right to buy) $ 0.58             11/14/2000(2) 11/14/2010 Common Stock 25,000   25,000 D  
Incentive Stock Option (right to buy) $ 1             03/14/2001(3) 03/14/2011 Common Stock 10,000   10,000 D  
Incentive Stock Option (right to buy) $ 1.2             07/10/2002(4) 07/10/2012 Common Stock 50,000   50,000 D  
Incentive Stock Option (right to buy) $ 1.2             05/21/2003(5) 05/21/2013 Common Stock 54,500   54,500 D  
Incentive Stock Option (right to buy) $ 6.5             04/08/2004(6) 03/08/2014 Common Stock 34,000   34,000 D  
Incentive Stock Option (right to buy) $ 6.59             04/11/2005(7) 04/11/2015 Common Stock 35,995   35,995 D  
Non-Qualified Stock Option (right to buy) $ 6.59             04/11/2005(7) 04/11/2015 Common Stock 14,005   14,005 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MORGANS DAVID J JR
280 EAST GRAND AVENUE
SOUTH SAN FRANCISCO, CA 94080		       SVP-Drug Discovery and Dev  

Signatures

 David J. Morgans, Jr. Ph.D.   03/03/2006
**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) When the ISO and NQ dated 03/01/2006 are combined for a total grant of 60,000 shares, the option shall vest and become exercisable as to 60,000 shares divided into equal monthly installments such that the option shall be 100% vested on 03/01/2010.
(2) This option is immediately exercisable upon grant and shall vest as to 20,000 shares on 10/18/01 and the balance of 60,000 divided into equal monthly installments thereafter such that the option shall be 100% vested on 10/18/04.
(3) This option is immediately exercisable upon grant and shall vest as to 3,750 shares on 03/14/02 and the balance of 11,250 divided into equal monthly installments thereafter such that the option shall be 100% vested on 03/14/05.
(4) This option is immediately exercisable upon grant and shall vest as to 833 shares on 04/15/02 and the balance of 49,167 divided into equal monthly installments thereafter such that the option shall be 100% vested on 03/15/07.
(5) This option is immediately exercisable upon grant and shall vest as to 1,135 shares on 04/01/03 and the balance of 53,365 divided into equal monthly installments thereafter such that the option shall be 100% vested on 03/01/07.
(6) This option shall vest and become exercisable as to 708 shares on 04/08/04 and the balance of 33,292 divided into equal monthly installments thereafter such that the option shall be 100% vested on 03/08/08.
(7) When the ISO and NQ dated 04/11/05 are combined for a total grant of 50,000 shares, the option shall vest and become exercisable as to 50,000 shares divided into equal monthly installments such that the option shall be 100% vested on 03/01/2009.

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