Current assets

Exhibit 4.1

Exhibit 4.1

CYTOKINETICS, INCORPORATED

     The Corporation will furnish without charge to each stockholder who so requests the powers, designations, preferences and relative, participating, optional, or other special rights of each class of stock or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights. Such requests shall be made to the Corporation’s Secretary at the principal office of the Corporation.

     KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, OR DESTROYED THE CORPORATION WILL REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE.

     The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM-

as tenants in common

UNIF GIFT MIN ACT-

Custodian

TEN ENT-

as tenants by the entireties

(Cust)

(Minor)

JT TEN-

as joint tenants with right of

under Uniform Gifts to Minors

survivorship and not as tenants

Act

in common

(State)

UNIF TRF MIN ACT-

Custodian (until age

)

(Cust)

under Uniform Transfers

(Minor)

to Minors Act

(State)

Additional abbreviations may also be used though not in the above list.

FOR VALUE RECEIVED,				hereby sell, assign and transfer unto

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)
		Shares
of the common stock represented by the within Certificate, and do hereby irrevocably constitute and appoint
		Attorney
to transfer the said stock on the books of the within named Corporation with full power of substitution in the premises.

Dated				X
				X
				NOTICE:		THE SIGNATURE (S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.

Signature(s) Guaranteed

By
the signature(s) must be guaranteed by an eligible guarantor institution (banks stockbrokers, savings and loan associations and credit unions with membership in an approved signature guarantee medallion program), pursuant to s.e.c. rule 17ad-15.