| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| MUSE SCOTT H | Director | 16100 SOUTH LATHROP AVENUE, HARVEY | /s/ Daniel S. Kelly, Attorney-in-Fact for Scott H. Muse | 02 Feb 2026 | 0001224118 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATKR | Common Stock | Award | $0 | +2,275 | +7.6% | $0.000000 | 32,386 | 29 Jan 2026 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | Reflects the award of restricted stock units, which are scheduled to vest based on continued service as a Director on the earlier of (a) the day immediately preceding the first anniversary of the grant date and (b) the day immediately preceding the Atkore International Group Inc. annual meeting of stockholders next following the grant date. |
| F2 | Includes unvested or deferred restricted stock units ("RSUs") and amounts accrued for dividend equivalent units on such RSUs. |