Ma Jun (CIK 2058815) reported 4 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-17). Recent activity: Buy KWR (120 shares), Buy KWR (90 shares), Buy KWR (145 shares), Buy KWR (4 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-17 | QUAKER CHEMICAL CORP (KWR) | SVP, Reg Comm Lead-APAC | Buy | 120 | $0 |
| 2026-03-17 | QUAKER CHEMICAL CORP (KWR) | SVP, Reg Comm Lead-APAC | Buy | 90 | $0 |
| 2026-03-17 | QUAKER CHEMICAL CORP (KWR) | SVP, Reg Comm Lead-APAC | Buy | 145 | $0 |
| 2026-03-17 | QUAKER CHEMICAL CORP (KWR) | SVP, Reg Comm Lead-APAC | Buy | 4 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-03-17