Series A Shares

Series A Shares. Share of Series A Preferred Stock having the rights, preferences, privileges, restrictions and other matters set forth in the Second Amended and Restated Certificate of Incorporation of the Corporation.

Series A Shares. The shares of Series A Preferred Stock issued and sold pursuant to that certain Series A Convertible Preferred Stock Purchase Agreement by and among the Company and Paul Bleicher, Richard Dale, Jeffrey Klofft, Atlas Venture, North Bridge II, Gustav A. Christensen, Gabriel Schmergel, Ronald A. Agel, Mirza Mehdi, Robert J. Carpenter and Stephen J. Schaubert dated as of November 14, 1997.

Series A Shares. Has the meaning set forth in the Recitals.

Series A Shares. The number of shares of Series A Preferred Stock (the "Series A Shares")

Series A Shares. Shall have the meaning set forth in the recitals to this Agreement.

Series A Shares. Means shares of Series A Convertible Preferred Shares of the Company.

Series A Shares. Shall mean the shares of the Series A Convertible Preferred Stock, par value $0.001 per share, of the Company issued to the Investors, and any securities (other than Common Shares) into which such shares may hereafter be changed or converted, including shares of the Company's Series A-1 Convertible Preferred Stock.

Series A Shares. Shall mean the shares of the Company's Series A Preferred Stock issued (i) pursuant to the Series A Purchase Agreement and (ii) upon the exercise of the Series A Warrants.

Series A Shares. Means the Company's Series A convertible preferred stock, $0.0001 par value per share, issued pursuant to the Agreements.