| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | PDFS | Common Stock | Tax liability | $2,160 | -100 | -0.09% | $21.60 | 105,169 | 01 Jan 2021 | By Spouse | F1, F2 |
| Id | Content |
|---|---|
| F1 | This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted stock units. This is not a sale of shares in the market. |
| F2 | The purpose of this amendment is to correct the arithmetical error to increase the total amount by 900 shares, which were inadvertently subtracted from the total amount on Form 4 filed on 1/5/2021 and all following filings through this Form. |