Blackstone Holdings II L.P., 10% Owner at Summit Materials, Inc. (SUM), sold 16,451,722 shares at $21.87 ($359.8M) on 2016-11-16, disclosed to the SEC on 2016-11-18.
Open-market sale of $359.8M SUM by 10% Owner. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $21.87 | 12,501 | $273K | 0.1% |
| 2 | $21.87 | 21,513 | $470K | 0.1% |
| 3 | $21.87 | 253,891 | $5.6M | 1.5% |
| 4 | $21.87 | 2,814,207 | $61.5M | 17.1% |
| 5 | $21.87 | 13,349,610 | $292.0M | 81.1% |
| Total | $21.87 avg |
| 16,451,722 |
| $359.8M |
| 100% |
| Filing → |
| BAER | SELL | 2026-08-06 | $3.2M | — | Filing → |
| JMKE | SELL | 2026-08-04 | $648.8M | — | Filing → |
| LGN | SELL | 2026-01-08 | $56.7M | — | Filing → |