Brian James Harris serves as Executive at Summit Materials, Inc., where they oversee executive responsibilities. Since joining the company, Brian James Harris has executed 56 insider transactions totaling $12.2M, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 26, 2025 involved receiving (via award) 33 shares valued at $0.
Brian James Harris currently holds 12,034 shares of Summit Materials, Inc. (SUM), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Brian James Harris has been a net seller of SUM stock. They have purchased $1.1M and sold $11.1M worth of shares.
Brian James Harris's most recent insider trade was on Nov 26, 2025, when they sold 33 shares at $0.00 per share.
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| $N/A |
| Discretionary |
| Feb 28, 2023 | SUM | $0 | Option Exercise | 4,785 | $N/A | Discretionary |
| Feb 28, 2023 | SUM | $0 | Award | 18,298 | $N/A | Discretionary |
| Feb 28, 2023 | SUM | $308.2K | Payment | 10,433 | $29.54 | Discretionary |
| Feb 28, 2023 | SUM | $0 | Option Exercise | 5,595 | $N/A | Discretionary |
| Feb 28, 2023 | SUM | $0 | Option Exercise | 6,635 | $N/A | Discretionary |
| Jul 30, 2022 | SUM | $161.0K | Payment | 5,851 | $27.51 | Discretionary |
| Jul 30, 2022 | SUM | $0 | Option Exercise | 13,328 | $N/A | Discretionary |
| Feb 28, 2022 | SUM | $0 | Option Exercise | 6,635 | $N/A | Discretionary |
| Feb 28, 2022 | SUM | $0 | Option Exercise | 5,596 | $N/A | Discretionary |
| Feb 28, 2022 | SUM | $0 | Award | 58,920 | $N/A | Discretionary |
| Feb 28, 2022 | SUM | $0 | Option Exercise | 9,820 | $N/A | Discretionary |
| Feb 28, 2022 | SUM | $846.7K | Payment | 27,122 | $31.22 | Discretionary |
| Jul 30, 2021 | SUM | $0 | Option Exercise | 13,328 | $N/A | Discretionary |
| Jul 30, 2021 | SUM | $109.1K | Payment | 3,246 | $33.60 | Discretionary |
| Feb 28, 2021 | SUM | $0 | Option Exercise | 6,635 | $N/A | Discretionary |
| Feb 28, 2021 | SUM | $170.9K | Payment | 6,169 | $27.71 | Discretionary |
| Feb 28, 2021 | SUM | $0 | Option Exercise | 9,820 | $N/A | Discretionary |
| Feb 28, 2021 | SUM | $0 | Option Exercise | 4,676 | $N/A | Discretionary |
| Feb 28, 2020 | SUM | $0 | Option Exercise | 9,820 | $N/A | Discretionary |
| Feb 28, 2020 | SUM | $0 | Award | 7,808 | $N/A | Discretionary |
| Feb 28, 2020 | SUM | $149.7K | Payment | 7,663 | $19.54 | Discretionary |
| Feb 28, 2020 | SUM | $0 | Option Exercise | 4,676 | $N/A | Discretionary |
| Feb 28, 2020 | SUM | $0 | Option Exercise | 3,843 | $N/A | Discretionary |
| Nov 20, 2019 | SUM | $2.4M | Option Exercise | 131,560 | $18.00 | Discretionary |
| Nov 20, 2019 | SUM | $484.7K | Option Exercise | 28,395 | $17.07 | Discretionary |
| Nov 20, 2019 | SUM | $6.3M | Sale | 261,155 | $24.14 | Discretionary |
| Nov 20, 2019 | SUM | $1.8M | Option Exercise | 101,200 | $18.00 | Discretionary |
| Nov 19, 2019 | SUM | $712.5K | Sale | 30,000 | $23.75 | Discretionary |