| 2020-11-02 | Sale | Summit Materials, Inc. SUM | See Remarks | 8,250 0.0073% | $18.48 | $152,431 | +65.21% | |
| 2020-05-26 | Sale | Summit Materials, Inc. SUM | See Remarks | 6,593 0.0055% | $14.75 | $97,247 | +22.6% | |
| 2019-11-15 | Sale | Summit Materials, Inc. SUM | See Remarks | 3,011 0.0027% | $23.20 | $69,869 | -27.42% | |
| 2019-11-01 | Sale | Summit Materials, Inc. SUM | See Remarks | 42,904 0.0384% | $23.71 | $1.02M | -28.53% | |
| 2018-03-05 | Sale | Summit Materials, Inc. SUM | See Remarks | 10,000 0.0092% | $32.57 | $325,700 | -38.46% | |
| 2018-02-27 | Sale | Summit Materials, Inc. SUM | See Remarks | 26,167 0.0244% | $32.32 | $845,717 | -34.95% | |
| 2017-08-04 | Sale | Summit Materials, Inc. SUM | See Remarks | 21,147 0.0198% | $29.27 | $618,973 | +2.62% | |
| 2017-06-14 | Sale | Summit Materials, Inc. SUM | See Remarks | 7,500 0.0071% | $28.48 | $213,600 | +6.1% | |
| 2016-11-16 | Sale | Summit Materials, Inc. SUM | See Remarks | 7,500 0.008% | $21.87 | $164,025 | +13.47% | |
| 2016-07-19 | Sale | Summit Materials, Inc. SUM | See Remarks | 5,000 0.0066% | $20.67 | $103,350 | +10.25% | |
| 2016-04-19 | Sale | Summit Materials, Inc. SUM | See Remarks | 5,500 0.0089% | $20.00 | $110,000 | +8.13% | |
| 2015-03-17 | Summit Materials, Inc. SUM | See Remarks | 2,000 0.0064% | $18.00 | $36,000 | +4.37% |