| 2016-12-15 | Sale | Summit Materials, Inc. SUM | See Remarks | 112,825 0.1312% | $23.77 | $2.68M | +17.38% | |
| 2016-12-12 | Sale | Summit Materials, Inc. SUM | See Remarks | 12,175 0.0144% | $24.18 | $294,392 | +16.99% | |
| 2016-05-23 | Sale | Summit Materials, Inc. SUM | See Remarks | 35,228 0.0575% | $21.85 | $769,732 | +6.24% | |
| 2016-05-20 | Sale | Summit Materials, Inc. SUM | See Remarks | 39,772 0.065% | $21.57 | $857,814 | +7.62% |