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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Jaw Ching
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 Finance & CFO
(Last)          (First)          (Middle)

280 EAST GRAND AVENUE
3. Date of Earliest Transaction (MM/DD/YYYY)

3/2/2021
(Street)

SOUTH SAN FRANCISCO, CA 94080
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 3/2/2021  A(1)  25000 A$0.0 92642 (2)D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. 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 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
Incentive Stock Option (right to buy) $19.42 3/2/2021  A   10121    4/2/2021 (3)3/1/2031 Common Stock 10121 $19.42 10121 D  
Non-Qualified Stock Option (right to buy) $19.42 3/2/2021  A   34879    4/2/2021 (3)3/1/2031 Common Stock 34879 $19.42 34879 D  

Explanation of Responses:
(1) Comprised of restricted stock units that will vest over 3 years, with 40% vesting on the 1-year anniversary of the grant, an additional 40% vesting on the 2-year anniversary of the grant, and the final 20% vesting on the 3-year anniversary of the grant.
(2) Includes 727 shares of common stock purchased pursuant to the Issuer's 2015 Employee Stock Purchase Plan (ESPP).
(3) This option shall vest and become exercisable over 4 years, with shares divided into equal monthly installments, such that the option shall be 100% vested four years from the date of grant.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Jaw Ching
280 EAST GRAND AVENUE
SOUTH SAN FRANCISCO, CA 94080


SVP Finance & CFO

Signatures
By: Robert Wong For: Ching Jaw3/4/2021
**Signature of Reporting PersonDate

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