Ellerbusch Susan A (CIK 1744472) reported 3 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-04-30). Recent activity: Buy CF (1,390 shares), Buy CF (2,074 shares), Sell SUM (23,386 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-30 | CF Industries Holdings, Inc. (CF) | Director | Buy | 1,390 | $0 |
| 2025-05-08 | CF Industries Holdings, Inc. (CF) | Director | Buy | 2,074 | $0 |
| 2025-02-10 | Summit Materials, Inc. (SUM) | Director | Sell | 23,386 | $1.2M |
Source: SEC Form 4 filings · as of 2026-04-30