| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Lowe LeAngela W. | VP, Chief HR Officer | 16100 S. LATHROP AVENUE, HARVEY | /s/ Daniel S. Kelly, Attorney-in-Fact for LeAngela W. Lowe | 03 Mar 2026 | 0001777650 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATKR | Common Stock | Award | $0 | +52 | +0.14% | $0.000000 | 35,986 | 27 Feb 2026 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Represents dividend equivalent units accrued on unvested restricted stock units ("RSUs"). |
| F2 | Includes unvested restricted stock units ("RSUs") and amounts accrued for dividend equivalent units on such RSUs. |