| 2018-11-19 | Summit Materials, Inc. SUM | See Remarks | 20,000 0.0184% | $13.97 | $279,400 | +25.04% | ||
| 2017-09-15 | Sale | Summit Materials, Inc. SUM | See Remarks | 18,354 0.0171% | $29.31 | $537,956 | +1.68% | |
| 2017-09-07 | Sale | Summit Materials, Inc. SUM | See Remarks | 1,560 0.0015% | $30.10 | $46,956 | -0.96% | |
| 2017-09-06 | Sale | Summit Materials, Inc. SUM | See Remarks | 17,899 0.0168% | $30.24 | $541,266 | -0.65% |