Thomas A. Beck, See Remarks at Summit Materials, Inc. (SUM), sold 17,899 shares at $30.24 ($541K) on 2017-09-06, disclosed to the SEC on 2017-09-08.
Open-market sale of $541k SUM by See Remarks. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| Filing → |
| SUM | SELL | 2017-09-08 | $588K | — | Filing → |