Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2025-02-14 09:44 am Sale | 2024-12-31 | 13G | Summit Materials, Inc. SUM | PRICE T ROWE ASSOCIATES INC | 5,353,933 3.000% | -3,855,566 (-41.87%) | Filing History |
| 2025-02-10 9:47 pm Sale | 2025-02-10 | 13D | Summit Materials, Inc. SUM | ARGOS SEM, LLC | 0 0.000% | -54,720,000 (Position Closed) | Filing History |
| 2024-11-25 09:19 am Unchanged | 2024-11-24 | 13D | Summit Materials, Inc. SUM | ARGOS SEM, LLC | 54,720,000 31.200% | 0 (Unchanged) | Filing History |
| 2024-11-14 1:22 pm Purchase | 2024-09-30 | 13G | Summit Materials, Inc. SUM | PRICE T ROWE ASSOCIATES INC | 9,209,499 5.200% | 395,229 (+4.48%) | Filing History |
| 2024-11-12 5:49 pm Unchanged | 2024-09-30 | 13G | Summit Materials, Inc. SUM | VANGUARD GROUP INC | 12,316,399 7.010% | 0 (Unchanged) | Filing History |
| 2024-11-12 11:54 am Purchase | 2024-11-12 | 13G | Summit Materials, Inc. SUM | MASSACHUSETTS FINANCIAL SERVICES CO | 7,639,798 4.400% | 989,339 (+14.88%) | Filing History |
| 2024-11-08 5:31 pm Unchanged | 2024-09-30 | 13G | Summit Materials, Inc. SUM | BlackRock Inc. BLK | 10,049,019 5.700% | 0 (Unchanged) | Filing History |
| 2024-11-04 1:50 pm Purchase | 2024-09-30 | 13G | Summit Materials, Inc. SUM | VANGUARD GROUP INC | 12,316,399 7.010% | 338,032 (+2.82%) | Filing History |
| 2024-10-24 2:02 pm Sale | 2024-09-30 | 13G | Summit Materials, Inc. SUM | BlackRock Inc. BLK | 10,049,019 5.700% | -1,316,132 (-11.58%) | Filing History |
| 2024-02-14 10:03 am Sale | 2023-12-31 | 13G | Summit Materials, Inc. SUM | PRICE T ROWE ASSOCIATES INC | 8,814,270 7.400% | -214,407 (-2.37%) | Filing History |
| 2024-02-13 5:15 pm Purchase | 2023-12-29 | 13G | Summit Materials, Inc. SUM | VANGUARD GROUP INC | 11,978,367 10.020% | 106,233 (+0.89%) | Filing History |
| 2024-02-09 6:05 pm Sale | 2024-02-07 | 13G | Summit Materials, Inc. SUM | Capital International Investors | 492,061 0.400% | -6,930,085 (-93.37%) | Filing History |
| 2024-02-09 11:49 am Purchase | 2024-02-09 | 13G | Summit Materials, Inc. SUM | MASSACHUSETTS FINANCIAL SERVICES CO | 6,650,459 5.600% | 6,650,459 (New Position) | Filing History |
| 2024-02-09 09:59 am Sale | 2024-02-14 | 13G | Summit Materials, Inc. SUM | DIMENSIONAL FUND ADVISORS LP | 5,458,887 4.600% | -540,072 (-9.00%) | Filing History |
| 2024-01-24 5:23 pm Purchase | 2023-12-31 | 13G | Summit Materials, Inc. SUM | BlackRock Inc. BLK | 11,365,151 9.500% | 2,192,134 (+23.90%) | Filing History |
| 2024-01-22 5:19 pm Purchase | 2024-01-12 | 13D | Summit Materials, Inc. SUM | ARGOS SEM, LLC | 54,720,000 31.400% | 54,720,000 (New Position) | Filing History |
| 2023-04-10 1:39 pm Purchase | 2023-03-31 | 13G | Summit Materials, Inc. SUM | VANGUARD GROUP INC | 11,872,134 10.030% | 169,117 (+1.45%) | Filing History |
| 2023-02-14 12:38 pm Sale | 2022-12-31 | 13G | Summit Materials, Inc. SUM | PRICE T ROWE ASSOCIATES INC | 9,028,677 7.600% | -9,343 (-0.10%) | Filing History |
| 2023-02-13 3:54 pm Purchase | 2023-02-14 | 13G | Summit Materials, Inc. SUM | Capital International Investors | 7,422,146 6.300% | 929,019 (+14.31%) | Filing History |
| 2023-02-10 2:42 pm Purchase | 2023-02-14 | 13G | Summit Materials, Inc. SUM | DIMENSIONAL FUND ADVISORS LP | 5,998,959 5.100% | 302,808 (+5.32%) | Filing History |