Investors & Media

South San Francisco, CA, February 19, 2014 - Cytokinetics, Incorporated (Nasdaq: CYTK) announced today that it intends to offer and sell shares of its common stock in an underwritten public offering.  Cytokinetics also expects to grant the underwriters an option to purchase up to an additional 15% of the shares of common stock offered in the public offering, exercisable for 30 days.  All of the shares in the proposed offering are to be sold by Cytokinetics. The offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering.

Cowen and Company, LLC is acting as the sole book-running manager.  JMP Securities LLC is acting as a lead manager.

This offering is being made pursuant to an effective shelf registration statement previously filed with the U.S. Securities and Exchange Commission (the "SEC"). A preliminary prospectus supplement and accompanying prospectus describing the terms of the proposed offering will be filed with the SEC. Before investing in this offering, interested parties should read in their entirety the prospectus supplement and the accompanying prospectus and the other documents that Cytokinetics has filed with the SEC that are incorporated by reference in such prospectus supplement and the accompanying prospectus, which provide more information about Cytokinetics and such offering.

This press release does not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. Any offer, if at all, will be made only by means of a prospectus supplement and accompanying prospectus forming a part of the effective registration statement. Copies of the preliminary prospectus supplement and accompanying prospectus relating to this offering may be obtained, when available, from Cowen and Company, LLC c/o Broadridge Financial Services., 1155 Long Island Avenue, Edgewood, NY, 11717, Attn: Prospectus Department, Phone: 631-274-2806, Fax: 631-254-7140.

Cytokinetics intends to file a preliminary prospectus supplement relating to the proposed offering with the SEC, which will be available along with the prospectus filed with the SEC in connection with the shelf registration on the SEC's website at http://www.sec.gov/.

About Cytokinetics

Cytokinetics is a clinical-stage biopharmaceutical company focused on the discovery and development of novel small molecule therapeutics that modulate muscle function for the potential treatment of serious diseases and medical conditions.

This press release contains forward-looking statements, including statements relating to Cytokinetics' expectations regarding the completion, timing and size of the proposed offering. These statements are subject to significant risks and uncertainties, actual results could differ materially from those projected and Cytokinetics cautions investors not to place undue reliance on the forward-looking statements contained in this release. These risks and uncertainties include, without limitation, risks and uncertainties related to market conditions that may affect the proposed offering. There can be no assurance that Cytokinetics will be able to complete the offering on the anticipated terms, or at all. Risks and uncertainties relating to Cytokinetics and this offering can be found in the "Risk Factors" section of the preliminary prospectus supplement related to such proposed offering to be filed with the SEC. Cytokinetics undertakes no duty or obligation to update any forward-looking statements contained in this release as a result of new information, future events or changes in Cytokinetics' expectations.

Contact:
Cytokinetics, Incorporated
Joanna L. Goldstein (Manager, Investor Relations & Corporate Communications)
(650) 624-3000