SUTTER HILL VENTURES sold ALAB

Footnotes

Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Stock") automatically converted into one share of Common Stock on a one-for-one basis, immediately prior to the closing of the Issuer's initial public offering. The shares of Preferred Stock have no expiration date.; Shares held by Sutter Hill Ventures, a California Limited Partnership ("SHV"). Michael L. Speiser, Samuel J. Pullara III and Stefan A. Dyckerhoff are managing directors and members of the management committee of the general partner of SHV. The Reporting Persons disclaim beneficial ownership in these shares except as to the Reporting Persons' pecuniary interest therein. Mr. Dyckerhoff is a director of the Issuer and files separate Section 16 reports.