| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SIBN | Common Stock | Sale | $61,498 | -2,113 | -1.2% | $29.10 | 180,507 | 16 Jul 2021 | Direct | F1, F2 |
| holding | SIBN | Common Stock | 58,272 | 16 Jul 2021 | by Trust | F3, F4 |
| Id | Content |
|---|---|
| F1 | The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person. |
| F2 | Represents shares issuable on the settlement of the net restricted stock units granted and canceled to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. |
| F3 | Reflects the transfer of shares from the Reporting Person to The Jeffrey W. Dunn Living Trust Dated May 17, 2012 |
| F4 | Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012. |