LIEBERMAN WILLIAM K (CIK 1279916) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-18). Recent activity: Buy AP (7,374 shares), Buy AP (12,728 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-18 | AMPCO PITTSBURGH CORP (AP) | Director | Buy | 7,374 | $0 |
| 2025-05-15 | AMPCO PITTSBURGH CORP (AP) | Director | Buy | 12,728 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-05-18