| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Herz Robert H | Director | 2900 UNIVERSITY BOULEVARD, AMES | /s/ Brandon E. Ziegler as attorney-in-fact for Robert H. Herz | 12 Dec 2025 | 0001523753 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WK | Class A Common Stock | Sale | $137,160 | -1,500 | -4% | $91.44 | 35,802 | 10 Dec 2025 | Direct | |
| holding | WK | Class A Common Stock | 36,809 | 10 Dec 2025 | By Trust |