| SC 13G/A | 2024-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | Summit Materials, Inc. | 8,814,270 | 7.4% | EDGAR |
| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | Summit Materials, Inc. | 11,978,367 | 10.0% | EDGAR |
| SC 13G/A | 2024-02-09 | DIMENSIONAL FUND ADVISORS LP | Summit Materials, Inc. | 5,458,887 | 4.6% | EDGAR |
| SC 13G/A | 2024-02-09 | Capital International Investors | Summit Materials, Inc. | 492,061 | 0.4% | EDGAR |
| SC 13G | 2024-02-09 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Summit Materials, Inc. | 6,650,459 | 5.6% | EDGAR |
| SC 13G | 2024-01-24 | BlackRock Inc. | Summit Materials, Inc. | 11,365,151 | 9.5% | EDGAR |
| SC 13D | 2024-01-22 | Argos SEM, LLC | Summit Materials, Inc. | 54,720,000 | 31.4% | EDGAR |
| SC 13G/A | 2023-04-10 | VANGUARD GROUP INC | Summit Materials, Inc. | 11,872,134 | 10.0% | EDGAR |
| SC 13G/A | 2023-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | Summit Materials, Inc. | 9,028,677 | 7.6% | EDGAR |
| SC 13G/A | 2023-02-13 | Capital International Investors | Summit Materials, Inc. | 7,422,146 | 6.3% | EDGAR |
| SC 13G | 2023-02-10 | DIMENSIONAL FUND ADVISORS LP | Summit Materials, Inc. | 5,998,959 | 5.1% | EDGAR |
| SC 13G/A | 2023-02-09 | FMR LLC | Summit Materials, Inc. | 4,621,051 | 3.9% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | Summit Materials, Inc. | 11,703,017 | 9.9% | EDGAR |
| SC 13G/A | 2023-02-03 | BlackRock Inc. | Summit Materials, Inc. | 9,173,017 | 7.9% | EDGAR |
| SC 13G/A | 2022-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | Summit Materials, Inc. | 8,886,942 | 7.4% | EDGAR |
| SC 13G | 2022-02-11 | Capital International Investors | Summit Materials, Inc. | 6,384,589 | 5.4% | EDGAR |
| SC 13G/A | 2022-02-10 | VANGUARD GROUP INC | Summit Materials, Inc. | 11,145,582 | 9.4% | EDGAR |
| SC 13G/A | 2022-02-09 | FMR LLC | Summit Materials, Inc. | 7,951,538 | 6.7% | EDGAR |
| SC 13G/A | 2022-02-08 | DIMENSIONAL FUND ADVISORS LP | Summit Materials, Inc. | 5,600,935 | 4.7% | EDGAR |
| SC 13G/A | 2022-02-03 | BlackRock Inc. | Summit Materials, Inc. | 8,974,433 | 7.6% | EDGAR |