| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| U.S. Venture Partners X, L.P. | 7.9% | 4,571,769 | 0 | 4,571,769 | /s/ Dale Holladay | Dale Holladay, Authorized Signatory | |
| USVP X Affiliates, L.P. | 0.3% | 146,257 | 0 | 146,257 | /s/ Dale Holladay | Dale Holladay, Authorized Signatory | |
| Presidio Management Group X, L.L.C. | 8.2% | 4,718,026 | 0 | 4,718,026 | /s/ Dale Holladay | Dale Holladay, Authorized Signatory | |
| Casey M Tansey | 8.2% | 4,718,026 | 0 | 4,718,026 | /s/ Dale Holladay, Attorney-in-Fact for Casey M. Tansey | Dale Holladay, Attorney-in-Fact |