Frantz Brian D (CIK 1496943) reported 4 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-02-03). Recent activity: Buy YSS (10,294 shares), Sell SUM (11,402 shares), Buy SUM (1,348 shares), Sell SUM (460 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-03 | Yellowstone Midco Holdings II, LLC (YSS) | Chief Accounting Officer | Buy | 10,294 | $0 |
| 2025-02-10 | Summit Materials, Inc. (SUM) | See Remarks | Sell | 11,402 | $598,605 |
| 2025-01-17 | Summit Materials, Inc. (SUM) | See Remarks | Buy | 1,348 | $0 |
| 2025-01-17 | Summit Materials, Inc. (SUM) | See Remarks | Sell | 460 | $24,007 |
Source: SEC Form 4 filings · as of 2026-02-03