Calico Commerce

Prospectus Summary

You should read the following summary together with the more detailed information regarding Calico and the consolidated financial statements and notes appearing elsewhere in this prospectus. Except as set forth in the consolidated financial statements or as otherwise specified in this prospectus, all information in this prospectus:

- - assumes no exercise of the underwriters' over-allotment option;

- - gives effect to the conversion of each outstanding share of preferred stock into one share of common stock upon the completion of this offering; and - - reflects our reincorporation into Delaware prior to the consummation of this offering.