As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 2/13/12  Sevin Rosen Fund VI LP            SC 13G/A               1:317K Cytokinetics Inc.                 Toppan Merrill/FA        
          Alan R. Schuele³
          Charles H. Phipps³
          Jackie R. Kimzey³
          John V. Jaggers³
          Jon W. Bayless³
          Sevin Rosen Fund VII L.P.³
          Sevin Rosen Fund VIII L.P.³
          Sevin Rosen VI Affiliates Fund L.P.³
          Sevin Rosen VII Affiliates Fund L.P.³
          Sevin Rosen VIII Affiliates Fund L.P.³
          SRB Associates VI L.P.³
          SRB Associates VII L.P.³
          SRB Associates VIII L.P.³
          Stephen L. Domenik³
          Stephen M. Dow³
 2/11/11  Sevin Rosen Fund VI LP            SC 13G/A               1:331K Cytokinetics Inc.                 Toppan Merrill/FA        
          Alan R. Schuele³
          Charles H. Phipps³
          Jackie R. Kimzey³
          John V. Jaggers³
          Jon W. Bayless³
          Sevin Rosen Fund VII L.P.³
          Sevin Rosen Fund VIII L.P.³
          Sevin Rosen VI Affiliates Fund L.P.³
          Sevin Rosen VII Affiliates Fund L.P.³
          Sevin Rosen VIII Affiliates Fund L.P.³
          SRB Associates VI L.P.³
          SRB Associates VII L.P.³
          SRB Associates VIII L.P.³
          Stephen L. Domenik³
          Stephen M. Dow³
 2/12/10  Sevin Rosen Fund VI LP            SC 13G/A               1:315K Cytokinetics Inc.                 Toppan Merrill/FA        
          Alan R. Schuele³
          Charles H. Phipps³
          Jackie R. Kimzey³
          John V. Jaggers³
          Jon W. Bayless³
          Sevin Rosen Fund VII L.P.³
          Sevin Rosen Fund VIII L.P.³
          Sevin Rosen VI Affiliates Fund L.P.³
          Sevin Rosen VII Affiliates Fund L.P.³
          Sevin Rosen VIII Affiliates Fund L.P.³
          SRB Associates VI L.P.³
          SRB Associates VII L.P.³
          SRB Associates VIII L.P.³
          Stephen L. Domenik³
          Stephen M. Dow³
 2/11/09  Sevin Rosen Fund VI LP            SC 13G/A               1:310K Cytokinetics Inc.                 Toppan Merrill/FA        
          Alan R. Schuele³
          Charles H. Phipps³
          Jackie R. Kimzey³
          John V. Jaggers³
          Jon W. Bayless³
          Sevin Rosen Fund VII L.P.³
          Sevin Rosen Fund VIII L.P.³
          Sevin Rosen VI Affiliates Fund L.P.³
          Sevin Rosen VII Affiliates Fund L.P.³
          Sevin Rosen VIII Affiliates Fund L.P.³
          SRB Associates VI L.P.³
          SRB Associates VII L.P.³
          SRB Associates VIII L.P.³
          Stephen L. Domenik³
          Stephen M. Dow³
 2/14/08  Sevin Rosen Fund VI LP            SC 13G/A               1:319K Cytokinetics Inc.                 Toppan Merrill/FA        
          Alan R. Schuele³
          Charles H. Phipps³
          Jackie R. Kimzey³
          John V. Jaggers³
          Jon W. Bayless³
          Sevin Rosen Fund VII L.P.³
          Sevin Rosen Fund VIII L.P.³
          Sevin Rosen VI Affiliates Fund L.P.³
          Sevin Rosen VII Affiliates Fund L.P.³
          Sevin Rosen VIII Affiliates Fund L.P.³
          SRB Associates VI L.P.³
          SRB Associates VII L.P.³
          SRB Associates VIII L.P.³
          Stephen L. Domenik³
          Stephen M. Dow³
 2/15/07‡ Sevin Rosen Fund VI LP            SC 13G/A    2/14/07    1:329K Cytokinetics Inc.                 Toppan Merrill/FA        
          Alan R. Schuele³
          Charles H. Phipps³
          Jackie R. Kimzey³
          John V. Jaggers³
          Jon W. Bayless³
          Sevin Rosen Fund VII L.P.³
          Sevin Rosen Fund VIII L.P.³
          Sevin Rosen VI Affiliates Fund L.P.³
          Sevin Rosen VII Affiliates Fund L.P.³
          Sevin Rosen VIII Affiliates Fund L.P.³
          SRB Associates VI L.P.³
          SRB Associates VII L.P.³
          SRB Associates VIII L.P.³
          Stephen L. Domenik³
          Stephen M. Dow³
 2/15/06  Sevin Rosen Fund VI LP            SC 13G/A               1:379K Cytokinetics Inc.                 Toppan Merrill/FA        
          Alan R. Schuele³
          Charles H. Phipps³
          Jackie R. Kimzey³
          John V. Jaggers³
          Jon W. Bayless³
          Sevin Rosen Fund VII L.P.³
          Sevin Rosen Fund VIII L.P³
          Sevin Rosen VI Affiliates Fund L.P.³
          Sevin Rosen VII Affiliates Fund L.P.³
          Sevin Rosen VIII Affiliates Fund L.P.³
          SRB Associates VI L.P.³
          SRB Associates VII L.P.³
          SRB Associates VIII L.P.³
          Stephen L. Domenik³
          Stephen M. Dow³
 2/11/05  Sevin Rosen Fund VI LP            SC 13G                 1:413K Cytokinetics Inc.                 Toppan Merrill/FA        
          Alan R Schuele³
          Charles H Phipps³
          David A Shrigley³
          Jackie R Kimzey³
          John V Jaggers³
          Jon W Bayless³
          Sevin Rosen Fund VII LP³
          Sevin Rosen Fund VIII LP³
          Sevin Rosen VI Affilitates Fund LP³
          Sevin Rosen VII Affiliates Fund LP³
          Sevin Rosen VIII Affiliates Fund LP³
          SRB Associates VI LP³
          SRB Associates VII LP³
          SRB Associates VIII LP³
          Stephen L Domenik³
          Stephen M Dow³

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Type:
	SC 13G	Statement of Acquisition of Beneficial Ownership by a “Passive” Investor — Schedule 13G.
	/A	Amendment to, or Amended version of, a previous Filing of this Type.
³	Group Member:  A Registrant or non-Registrant party to this Filing made by a Group.