| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SILK | Common Stock | Options Exercise | $200,000 | +10,000 | +5.5% | $20.00 | 192,192 | 28 Jun 2021 | Direct | F1 |
| transaction | SILK | Common Stock | Sale | $516,021 | -10,000 | -5.2% | $51.60 | 182,192 | 28 Jun 2021 | Direct | F1, F2 |
| holding | SILK | Common Stock | 13,518 | 28 Jun 2021 | Buchanan Grandchildren's Irrevocable Trust | 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 | -10,000 | -17% | $0.000000 | 49,043 | 28 Jun 2021 | Common Stock | 10,000 | $20.00 | Direct | F1, F4 |
| 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 $50.13 to $52.95. 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 are held directly by the Buchanan Grandchildren's Irrevocable Trust, for which the Reporting Person serves as a co-trustee. |
| F4 | One forty-eighth of the shares subject to the option shall vest on May 3, 2019 and each month thereafter, subject to the Reporting Person continuing as a service provider through each such date. |