| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Freund John Gordon | Director | C/O SKYLINE VENTURES, 525 UNIVERSITY AVENUE, SUITE 1350, PALO ALTO | /s/ Michael A. Pisetsky, Attorney-in-Fact for John G. Freund | 2025-08-11 | 0001296771 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SIBN | Common Stock | Sale | -$194K | -12.1K | -11.68% | $15.99 | 91.8K | Aug 8, 2025 | By John Freund Family Partnership IV, L.P | F1, F2 |
| holding | SIBN | Common Stock | 43.3K | Aug 8, 2025 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | This transaction was executed in multiple trades at prices ranging from $15.80 USD to $16.3950 USD; the price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. |
| F2 | Shares held by John Freund Family Partnership IV, L.P. ("Family LP"). Reporting Person, a member of Issuer's board of directors, is a general partner of Family LP and may be deemed to have voting and investment power with respect to the securities held by Family LP. Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein. |
| F3 | Includes 8,675 shares issuable on the settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. |