Tananbaum James B. bought LTGO

Footnotes

Each share of preferred stock converted automatically into 1 share of common stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The preferred stock had no expiration date.; The securities are held of record by Foresite Capital Fund VI, LP (Fund VI). Foresite Capital Management VI, LLC (FCM VI) is the general partner of Fund VI and may be deemed to have sole voting and dispositive power over the securities held by Fund VI. The Reporting Person is the sole managing member of FCM VI and may be deemed to have sole voting and dispositive power over the securities held by Fund VI. Each of Fund VI, FCM VI and the Reporting Person disclaims the existence of a "group" and disclaims beneficial ownership of such securities except to the extent of its pecuniary interest therein.