| Company | Role | Class | Num Shares | Value | Price $ | Report Date | Ownership |
|---|---|---|---|---|---|---|---|
| Summit Materials, Inc. | Director | Class A Common Stock | 0 | $0 | $52.50 | 10 Feb 2025 | Direct |
| Summit Materials, Inc. | Director | Restricted Stock Units | 0 | $0 | $52.50 | 10 Feb 2025 | Direct |
| Summit Materials, Inc. | Director | Deferred Restricted Stock Units | 0 | 10 Feb 2025 | Direct |