Common use of Registration Under Securities Act of 1933, as amended Clause in Contracts

Registration Under Securities Act of 1933, as amended. The Company has added Holder as a party to that certain Amended and Restated Investor Rights Agreement dated as of August 30, 2001 by and among the Company and certain purchasers of shares of the Company's Preferred Stock ("Rights Agreement") so that (i) shares of Common Stock issuable upon exercise of this Warrant shall be "Registrable Securities" under the Rights Agreement and (ii) with the exception of Section 2.1 of the Rights Agreement, Holder shall be considered a "Holder" for all other purposes under the Rights Agreement.

Registration Under Securities Act of 1933, as amended. The Company has added agrees that the Shares or, if the Shares are convertible into common stock of the Company, such common stock, shall be “Registrable Securities”, and Holder shall be a “Holder” under the Investor Rights Agreement among the Company and other persons dated as a party of November 25, 2003, as amended by that First Amendment to that certain Amended and Restated Investor Rights Agreement dated as of August 30February 10, 2001 by 2004, and among the Company and certain purchasers of shares of the Company's Preferred Stock ("Rights Agreement") so that (i) shares of Common Stock issuable upon exercise of this Warrant shall be "Registrable Securities" under the Second Amendment to Investor Rights Agreement and (ii) with the exception dated as of Section 2.1 of the Rights AgreementSeptember 7, Holder shall be considered a "Holder" for all other purposes under the Rights Agreement2005.

Registration Under Securities Act of 1933, as amended. The Company has added Holder as a party to agrees that certain Amended and Restated Investor Rights Agreement dated as of August 30the Shares or, 2001 by and among if the Company and certain purchasers of shares Shares are convertible into common stock of the Company's Preferred Stock ("Rights Agreement") so that (i) shares of Common Stock issuable upon exercise of this Warrant , such common stock, shall be subject to the registration rights of "Registrable Securities" under set forth in the First Amended and Restated Shareholder Rights Agreement and (ii) with the exception of Section 2.1 of the Rights Agreementdated February 19, Holder shall 1999, as may be considered a "Holder" for all other purposes under the Rights Agreementamended from time to time.

Registration Under Securities Act of 1933, as amended. The Company has added agrees that the Shares or, if the Shares are convertible into common stock of the Company, such common stock, shall be “Registrable Securities”, and Holder as shall be a party to that certain “Holder” for purposes of Sections 2.3, 2.5, 2.6, 2.7, 2.8, 2.9, 2.10, 2.11, 2.12, 2.13 and Section 5 of the Third Amended and Restated Investor Rights Agreement dated as of August 30, 2001 by and among the Company and certain purchasers other persons dated as of shares of the Company's Preferred Stock ("Rights Agreement") so that (i) shares of Common Stock issuable upon exercise of this Warrant shall be "Registrable Securities" under the Rights Agreement and (ii) with the exception of Section 2.1 of the Rights AgreementApril 26, Holder shall be considered a "Holder" for all other purposes under the Rights Agreement2007.

Registration Under Securities Act of 1933, as amended. The Company has added agrees that the Shares or, if the Shares are convertible into common stock of the Company, such common stock, shall be “Registrable Securities”, and Holder as shall be a party to that certain Amended and Restated “Holder” under the Investor Rights Agreement dated as of August 30, 2001 by and among the Company and certain purchasers other persons dated as of shares of the Company's Preferred Stock ("Rights Agreement") so that (i) shares of Common Stock issuable upon exercise of this Warrant shall be "Registrable Securities" under the Rights Agreement and (ii) with the exception of Section 2.1 of the Rights AgreementJune 10, Holder shall be considered a "Holder" for all other purposes under the Rights Agreement2015.

Registration Under Securities Act of 1933, as amended. The Company has added Holder as a party agrees that the Shares or, if the Shares are convertible into common stock of the Company, such common stock, shall be subject to that certain the registration rights set forth in the Company's Second Amended and Restated Investor Rights Agreement dated as of August 3013, 2001 by and among 1998 (the Company and certain purchasers of shares of the Company's Preferred Stock ("Rights Agreement") so that (i) shares of Common Stock issuable upon exercise of this Warrant ). The Company shall be "Registrable Securities" under the Rights Agreement and (ii) with the exception of Section 2.1 of the Rights Agreement, promptly add Holder shall be considered as a "Holder" for all other purposes under party to the Rights Agreement.

Registration Under Securities Act of 1933, as amended. The Company has added agrees that with respect to the Shares or, if the Shares are convertible into Common Stock of the Company, such Common Stock, Holder as a party to that certain Amended and Restated shall have the registration rights set forth in the Company’s Investor Rights Agreement dated August 17, 2005, as the same is in effect on the date hereof. In the event of August 30any subsequent changes to said Agreement which would be advantageous to the Holder, 2001 by and among the Company and certain purchasers Holder shall have the benefit of shares of such changes, but no changes to said Agreement which would be less advantageous to the Company's Preferred Stock ("Rights Agreement") so that (i) shares of Common Stock issuable upon exercise of this Warrant shall be "Registrable Securities" under the Rights Agreement and (ii) with the exception of Section 2.1 of the Rights Agreement, Holder shall be considered a "binding on the Holder" for all other purposes under the Rights Agreement.