| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Tkachenko Igor | VP Corporate Strategy | 1200 N. FEDERAL HWY,, SUITE 200, BOCA RATON | /s/ Igor Tkachenko | 18 Mar 2026 | 0001995513 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | ATCX | Common Stock | 99,290 | 18 Mar 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Includes 75,067 restricted stock units (RSUs), which will settle on a one-for-one basis in shares of the Issuer's Common Stock on each vesting date, subject to the Reporting Person's continued employment through such dates. The RSUs will vest 25% on each of August 1, 2026, February 1, 2027, August 1, 2027 and February 1, 2028. |