Thomas W. Hill is CEO & President at Summit Materials, Inc. (SUM). They have made 61 open-market trades across 1 company since 2016, most recently 2026-05-20.
CIK 0001440948
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $508K since 2019, against 60 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SUM | BUY | 2019-02-15 | 2019-02-19 | $16.25 | $508K | +1.4% | +0.9% | +0.7% |
| SUM | SELL | 2018-07-18 | 2018-07-20 | $26.10 | $326K | -18.2% | -21.0% | -46.0% |
| SUM | SELL | 2018-07-02 | 2018-07-05 | $26.27 | $328K | -3.0% | -24.0% | -33.3% |
| SUM | SELL | 2018-06-19 | 2018-06-21 | $27.62 | $345K | -1.7% | -5.6% | -29.2% |
| SUM | SELL | 2018-06-06 | 2018-06-08 | $27.41 | $343K | +2.6% | -0.5% | -22.9% |
| SUM | SELL | 2018-05-21 | 2018-05-23 | $28.99 | $362K | -5.6% | -7.2% | -27.5% |
| SUM | SELL | 2018-05-09 | 2018-05-11 | $29.54 | $369K | -1.0% | -6.9% | -26.8% |
| SUM | SELL | 2018-04-26 | 2018-04-30 | $28.56 | $357K | +3.8% | -0.7% | -11.5% |
| SUM | SELL | 2018-04-11 | 2018-04-13 | $29.30 | $366K | +0.3% | +2.7% | -6.9% |
| SUM | SELL | 2018-03-26 | 2018-03-28 | $30.28 | $378K | -1.4% | -4.5% | -12.4% |
| SUM | SELL | 2018-03-16 | 2018-03-16 | $31.15 | $7.4M | -3.8% | -6.3% | -9.9% |
| SUM | SELL | 2018-03-15 | 2018-03-16 | $30.40 | $1.9M | -3.8% | -6.3% | -9.9% |
| SUM | SELL | 2018-03-14 | 2018-03-16 | $31.09 | $4.4M | -3.8% | -6.3% | -9.9% |
| SUM | SELL | 2018-03-14 | 2018-03-16 | $31.02 | $13.9M | -3.8% | -6.3% | -9.9% |
| SUM | SELL | 2018-03-12 | 2018-03-14 | $31.87 | $398K | -1.3% | -7.8% | -11.0% |
| SUM | SELL | 2018-02-27 | 2018-03-01 | $32.03 | $400K | +0.9% | -9.2% | -11.5% |
| SUM | SELL | 2018-02-08 | 2018-02-12 | $29.01 | $310K | +8.5% | +5.9% | +0.4% |
| SUM | SELL | 2018-01-22 | 2018-01-24 | $31.53 | $382K | -10.8% | -3.9% | -14.5% |
| SUM | SELL | 2018-01-10 | 2018-01-12 | $31.24 | $390K | +4.1% | -9.0% | -8.5% |
| SUM | SELL | 2017-12-20 | 2017-12-22 | $30.25 | $378K | +3.0% | +2.6% | -1.7% |
| SUM | SELL | 2017-12-06 | 2017-12-08 | $30.84 | $385K | -7.5% | -2.3% | -2.4% |
| SUM | SELL | 2017-11-21 | 2017-11-24 | $29.80 | $373K | +5.0% | +7.3% | +7.7% |
| SUM | SELL | 2017-11-08 | 2017-11-13 | $30.26 | $378K | -2.1% | +2.8% | -3.6% |
| SUM | SELL | 2017-10-23 | 2017-10-25 | $32.12 | $402K | -3.4% | -7.4% | +1.8% |
| SUM | SELL | 2017-10-03 | 2017-10-05 | $32.11 | $401K | -3.4% | -4.2% | -0.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.