| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SILK | Common Stock | Options Exercise | $2,651 | +1,657 | +5.3% | $1.60* | 32,897 | 01 Jun 2021 | Direct | F1 |
| transaction | SILK | Common Stock | Sale | $78,254 | -1,657 | -5% | $47.23 | 31,240 | 01 Jun 2021 | Direct | F1, F2 |
| transaction | SILK | Common Stock | Options Exercise | $22,075 | +4,667 | +15% | $4.73 | 35,907 | 01 Jun 2021 | Direct | F1 |
| transaction | SILK | Common Stock | Sale | $220,406 | -4,667 | -13% | $47.23 | 31,240 | 01 Jun 2021 | Direct | F1, F2 |
| transaction | SILK | Common Stock | Award | $16,960 | +420 | +1.3% | $40.38 | 31,660 | 20 May 2021 | Direct | F3 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SILK | Option (right to buy) | Options Exercise | $0 | -1,657 | -5% | $0.000000 | 31,475 | 01 Jun 2021 | Common Stock | 1,657 | $1.60 | Direct | F1, F4 |
| transaction | SILK | Option (right to buy) | Options Exercise | $0 | -4,667 | -5.5% | $0.000000 | 79,592 | 01 Jun 2021 | Common Stock | 4,667 | $4.73 | Direct | F1, F5 |
| Id | Content |
|---|---|
| F1 | The option exercise and sale reported on this Form 4 were effected pursuant to Rule 10b5-1 Trading Plan adopted by the reporting person on September 11, 2020. |
| F2 | This transaction was executed in multiple trades at price ranging from $46.67 to $48.32. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. |
| F3 | These shares were acquired under the Issuer's Employee Stock Purchase Plan in a transaction exempt under Rule 16b-3(c). |
| F4 | All of the shares subject to this option are fully vested and exercisable as of the date hereof. |
| F5 | One forty-eighth of the shares subject to the option shall vest on September 1, 2017 and each month thereafter, subject to the Reporting Person continuing as a service provider through each such date. |