| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| ZUIKER JOSEPH R. | EVP, Engineering & Operations | 333 THREE D SYSTEMS CIRCLE, ROCK HILL | Andrew WB Wright, Attorney-in-Fact for Joseph R. Zuiker | 2025-09-09 | 0001957687 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | DDD | Common Stock | Tax liability | -$14.3K | -6.73K | -3.19% | $2.12 | 204K | Sep 5, 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were withheld to satisfy tax withholding obligations with respect to the vesting of a grant of restricted stock originally made on September 5, 2024. |