| 2018-03-02 | Sale | Summit Materials, Inc. SUM | director | 20,000 0.0183% | $32.20 | $644,000 | -37.26% | |
| 2018-03-01 | Sale | Summit Materials, Inc. SUM | director | 60,000 0.0553% | $32.01 | $1.92M | -36.05% | |
| 2017-05-05 | Sale | Summit Materials, Inc. SUM | director | 21,344 0.0203% | $28.04 | $598,486 | +7.5% | |
| 2017-03-01 | Sale | Summit Materials, Inc. SUM | director | 19,332 0.0187% | $24.80 | $479,434 | +18.84% | |
| 2016-12-15 | Sale | Summit Materials, Inc. SUM | director | 22 <0.0001% | $23.40 | $515 | +17.38% | |
| 2016-12-12 | Sale | Summit Materials, Inc. SUM | director | 1.61M 1.8996% | $24.07 | $38.77M | +16.99% | |
| 2016-04-19 | Sale | Summit Materials, Inc. SUM | director | 522,804 0.8452% | $20.00 | $10.46M | +8.13% |