Transaction Details

Footnotes

Represents restricted stock units ("RSUs") that were granted pursuant to the Issuer's Non-Employee Director Compensation Program (the "Program") in lieu of retainer fees. Each RSU represents the right to receive one (1) share of Common Stock. | Presidio Management Group X, L.L.C. ("PMG X"), the general partner of U.S. Venture Partners X, L.P. and USVP X Affiliates, L.P. (together, the "USVP X Funds"), has sole voting and dispositive power with respect to the shares held by the USVP X Funds. The Reporting Person is a managing member of PMG X, and may be deemed to share voting and dispositive power over the shares held by the USVP X Funds. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein. | Shares held by U.S. Venture Partners X, L.P. | Shares held by USVP X Affiliates, L.P.