| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| GRAVES JEFFREY A | President and CEO, Director | 333 THREE D SYSTEMS CIRCLE, ROCK HILL | Andrew WB Wright, Attorney-in-Fact for Jeffrey A. Graves | 09 Sep 2025 | 0001251036 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | DDD | Common Stock | Tax liability | -$85.1K | -40.1K | -3.11% | $2.12 | 1.25M | 05 Sep 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Shares reported were withheld to satisfy tax withholding obligations with respect to the vesting of a grant of restricted stock originally made on September 5, 2024. |