Chen Yajing Insider Trading -- Recent SEC Form 4 Transactions
Chen Yajing (CIK 1985694) reported 26 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-10-05). Recent activity: Buy ZLAB (920 shares), Sell ZLAB (315 shares), Sell ZLAB (260 shares), Buy ZLAB (1,250 shares), Sell ZLAB (427 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-05 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 920 | $0 |
| 2026-10-05 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 315 | $8,032 |
| 2026-08-21 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 260 | $7,020 |
| 2026-08-18 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 1,250 | $0 |
| 2026-08-18 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 427 | $11,059 |
| 2026-08-13 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 619 | $15,475 |
| 2026-06-29 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 6,250 | $0 |
| 2026-06-29 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 2,264 | $39,529 |
| 2026-04-08 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 853 | $17,444 |
| 2026-04-03 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 5,199 | $106,008 |
| 2026-04-03 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 13,758 | $0 |
| 2026-04-03 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 2,500 | $0 |
| 2026-04-03 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 1,500 | $0 |
| 2026-03-16 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 4,258 | $0 |
| 2026-03-16 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 1,703 | $31,727 |
| 2025-11-04 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 500 | $0 |
| 2025-11-04 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 240 | $6,439 |
| 2025-10-03 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 920 | $0 |
| 2025-10-03 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 456 | $15,618 |
| 2025-08-18 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 1,250 | $0 |
| 2025-08-18 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 610 | $21,515 |
| 2025-08-18 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 828 | $29,419 |
| 2025-08-12 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 4,096 | $139,305 |
| 2025-06-27 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Buy | 6,250 | $0 |
| 2025-06-27 | Zai Lab Ltd (ZLAB) | Chief Financial Officer | Sell | 2,675 | $96,648 |
Source: SEC Form 4 filings · as of 2026-10-05