consists of (i) 1,345,636 Shares purchased by Boxer Capital, LLC, or Boxer Capital, in the Private Placement and (ii) 2,075,905 additional shares of common stock held by Boxer Capital. Boxer Asset Management, Inc. and Joseph Lewis hold shared voting and dispositive power over the shares held by Boxer Capital. Each individual and entity above disclaims beneficial ownership over the shares owned by Boxer Capital except to the extent of its or their pecuniary interest therein. The address of Boxer Asset Management, Inc. and Joseph Lewis is c/o Cay House, EP Taylor Drive N7776 Lyford Cay, New Providence, Bahamas. The address of Boxer Capital is 12860 El Camino Real, Suite 300, San Diego, CA 92130.
(2)
The shares reported under “Shares of Common Stock Beneficially Owned Prior to the Offering” consists of 816,994 Shares purchased by Deerfield Partners, L.P. in the Private Placement. Deerfield Mgmt, L.P. is the general partner of Deerfield Partners, L.P. Deerfield Management Company, L.P. is the investment manager of Deerfield Partners, L.P. James E. Flynn is the sole member of the general partner of each of Deerfield Mgmt, L.P. and Deerfield Management Company, L.P. Deerfield Mgmt, L.P., Deerfield Management Company, L.P. and Mr. Flynn may be deemed to beneficially own the shares of common stock of the Company beneficially owned by Deerfield Partners, L.P. Each of Deerfield Mgmt, L.P., Deerfield Management Company, L.P. and Mr. Flynn disclaims beneficial ownership of any such securities held by Deerfield Partners, L.P., except to the extent of his/its indirect pecuniary interest therein, if any. The address of Deerfield Partners, L.P. is c/o Deerfield Management Company, L.P., 345 Park Avenue South, Floor 12, New York, NY 10010.
(3)
The shares reported under “Shares of Common Stock Beneficially Owned Prior to the Offering” consists of (i)198,411 Shares purchased by EcoR1 Capital Fund, L.P. and 3,261,797 Shares purchased by EcoR1 Capital Fund Qualified, L.P, or, collectively, the EcoR1 Funds, respectively, in the Private Placement. EcoR1 Capital, LLC is the general partner of the EcoR1 Funds. Oleg Nodelman is the control person of the EcoR1 Funds and may be deemed to share voting dispositive power over the shares held by the EcoR1 Funds. The address of the EcoR1 Funds is 357 Tehama Street #3, San Francisco, California 94103.
(4)
The shares reported under “Shares of Common Stock Beneficially Owned Prior to the Offering” consists of (i) 502,811 shares held by Fidelity Select Portfolios: Biotechnology Portfolio, including 54,800 Shares purchased in the Private Placement, (ii) 3,745,431 shares held by Fidelity Growth Company Commingled Pool, including 546,178 Shares purchased in the Private Placement, (iii) 792,697 shares held by Fidelity Mr. Vernon Street Trust: Fidelity Growth Company K6 Fund, including 113,900 Shares purchased in the Private Placement, (iv) 3,103,300 shares held by Fidelity Mt. Vernon Street Trust: Fidelity Growth Company Fund, including 457,500 Shares purchased in the Private Placement, (v) 863,790 shares held by Fidelity Mr. Vernon Street Trust: Fidelity Series Growth Company Fund, including 125,200 Shares purchased in the Private Placement, and (vi) 44,300 shares held by entities that did not purchase shares in the Private Placement. These accounts are managed by direct or indirect subsidiaries of FMR LLC. Abigail P. Johnson is a Director, the Chairman and the Chief Executive Officer of FMR LLC. Members of the Johnson family, including Abigail P. Johnson, are the predominant owners, directly or through trusts, of Series B voting common shares of FMR LLC, representing 49% of the voting power of FMR LLC. The Johnson family group and all other Series B shareholders have entered into a shareholders’ voting agreement under which all Series B voting common shares will be voted in accordance with the majority vote of Series B voting common shares. Accordingly, through their ownership of voting common shares and the execution of the shareholders’ voting agreement, members of the Johnson family may be deemed, under the Investment Company Act of 1940, to form a controlling group with respect to FMR LLC. Neither FMR LLC nor Abigail P. Johnson has the sole power to vote or direct the voting of the shares owned directly by the various investment companies registered under the Investment Company Act, or Fidelity Funds, advised by Fidelity Management & Research Company LLC, or FMR Co. LLC, a wholly owned subsidiary of FMR LLC, which power resides with the Fidelity Funds’ Boards of Trustees. FMR Co. LLC carries out the voting of the shares under written guidelines established by the Fidelity Funds’ Boards of Trustees. The address of FMR LLC is 245 Summer Street, Boston, Massachusetts 02210.
(5)
The shares reported under “Shares of Common Stock Beneficially Owned Prior to the Offering” consists of (i) 576,701 Shares purchased by Perceptive Life Sciences Master Fund, Ltd., or Perceptive, in the Private Placement and (ii) 3,477,437 shares of common stock held by Perceptive. Perceptive Advisors LLC is the investment manager of Perceptive, and Joseph Edelman is the managing member