Zai Lab Ltd — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Edmondson Frazor Titus III | Chief Legal Officer | Sale | 8,651 | $17.14 | $148,278 | 19,086 | Dec 16, 2025 |
| Du Ying | Chairperson & CEO | Gift | 377,520 | — | — | 964,161 | Dec 10, 2025 |
| Edmondson Frazor Titus III | Chief Legal Officer | Sale | 14,328 | $19.78 | $283,408 | 27,737 | Nov 21, 2025 |
| Chen Yajing | Chief Financial Officer | Option Exercise | 500 | — | — | 17,684 | Nov 3, 2025 |
| Chen Yajing | Chief Financial Officer | Option Exercise | 920 | — | — | 17,640 | Oct 2, 2025 |
| Smiley Joshua L | See Remarks | Purchase | 10,000 | $28.91 | $289,100 | 86,604 | Sep 10, 2025 |
| Du Ying | Chairperson & CEO | Tax Withholding | 251,319 | $32.59 | $8,190,486 | 890,019 | Aug 29, 2025 |
| Smiley Joshua L | See Remarks | Sale | 6,641 | $36.24 | $240,670 | 76,604 | Aug 15, 2025 |
| Edmondson Frazor Titus III | Chief Legal Officer | Sale | 1,883 | $36.24 | $68,240 | 42,065 | Aug 15, 2025 |
| Chen Yajing | Chief Financial Officer | Sale | 610 | $35.27 | $21,515 | 17,548 | Aug 14, 2025 |
| Du Ying | Chairperson & CEO | Option Exercise | 46,387 | $0.60 | $27,832 | 583,349 | Aug 13, 2025 |
| Du Ying | Chairperson & CEO | Option Exercise | 50,000 | $0.60 | $30,000 | 586,962 | Aug 11, 2025 |
| Amado Rafael | See Remarks | Sale | 3,000 | $35.00 | $105,000 | 42,178 | Aug 8, 2025 |
| Chen Yajing | Chief Financial Officer | Sale | 4,096 | $34.01 | $139,305 | 16,908 | Aug 8, 2025 |
| Du Ying | Chairperson & CEO | Option Exercise | 18,000 | — | — | 544,034 | Jul 2, 2025 |
| Du Ying | Chairperson & CEO | Sale | 6,918 | $35.52 | $245,727 | 526,034 | Jun 27, 2025 |
| Du Ying | Chairperson & CEO | Option Exercise | 58,800 | — | — | 538,651 | Jun 26, 2025 |
| Edmondson Frazor Titus III | Chief Legal Officer | Sale | 5,877 | $36.13 | $212,336 | 39,098 | Jun 25, 2025 |
| Chen Yajing | Chief Financial Officer | Sale | 2,675 | $36.13 | $96,648 | 21,004 | Jun 25, 2025 |
| Lis William | — | Award / Grant | 10,831 | — | — | 48,920 | Jun 20, 2025 |
| WIRTH PETER | — | Award / Grant | 10,831 | — | — | 393,750 | Jun 18, 2025 |
| Vounatsos Michel | — | Award / Grant | 10,831 | — | — | 50,416 | Jun 18, 2025 |
| MOULDER LEON O JR | — | Award / Grant | 10,831 | — | — | 72,602 | Jun 18, 2025 |
| Morrison Scott W | — | Award / Grant | 10,831 | — | — | 34,533 | Jun 18, 2025 |
| GAYNOR RICHARD | — | Award / Grant | 10,831 | — | — | 54,899 | Jun 18, 2025 |
| DIEKMAN JOHN D | — | Award / Grant | 10,831 | — | — | 99,769 | Jun 18, 2025 |
| Leung Nisa | — | Award / Grant | 10,831 | — | — | 73,926 | Jun 18, 2025 |
| Chen Yajing | Chief Financial Officer | Sale | 9,618 | $30.00 | $288,540 | 17,429 | Jun 2, 2025 |
| Du Ying | Chairperson & CEO | Option Exercise | 50,000 | $0.60 | $30,000 | 529,851 | May 14, 2025 |
| Du Ying | Chairperson & CEO | Option Exercise | 50,000 | $0.60 | $30,000 | 529,851 | May 12, 2025 |
| Morrison Scott W | — | Sale | 23,799 | $30.05 | $715,160 | 23,702 | May 9, 2025 |
| Smiley Joshua L | See Remarks | Option Exercise | 7,145 | — | — | 70,699 | Apr 4, 2025 |
| Edmondson Frazor Titus III | Chief Legal Officer | Option Exercise | 5,032 | — | — | 32,249 | Apr 4, 2025 |
| Du Ying | Chairperson & CEO | Sale | 2,945 | $33.11 | $97,509 | 479,851 | Apr 3, 2025 |
| Chen Yajing | Chief Financial Officer | Sale | 924 | $33.11 | $30,594 | 27,047 | Apr 3, 2025 |
| Amado Rafael | See Remarks | Sale | 3,029 | $33.11 | $100,290 | 45,178 | Apr 3, 2025 |
| Chen Yajing | Chief Financial Officer | Option Exercise | 13,757 | — | — | 30,751 | Apr 2, 2025 |
| Smiley Joshua L | See Remarks | Option Exercise | 32,062 | — | — | 75,294 | Apr 2, 2025 |
| Edmondson Frazor Titus III | Chief Legal Officer | Option Exercise | 2,671 | — | — | 16,999 | Apr 1, 2025 |
| Du Ying | Chairperson & CEO | Option Exercise | 3,400 | — | — | 481,854 | Apr 1, 2025 |
| Amado Rafael | See Remarks | Sale | 7,541 | $35.89 | $270,646 | 42,816 | Apr 1, 2025 |
| Amado Rafael | See Remarks | Sale | 3,000 | $38.41 | $115,230 | 30,834 | Mar 17, 2025 |
| Du Ying | Chairperson & CEO | Gift | 10,406 | — | — | 478,060 | Mar 14, 2025 |
| GAYNOR RICHARD | — | Sale | 2,500 | $35.07 | $87,675 | 44,068 | Mar 5, 2025 |
| Du Ying | Chairperson & CEO | Sale | 21,093 | $35.20 | $742,474 | 519,413 | Mar 4, 2025 |
| Du Ying | Chairperson & CEO | Sale | 2,857 | $33.59 | $95,967 | 541,260 | Mar 3, 2025 |
| Edmondson Frazor Titus III | Chief Legal Officer | Sale | 14,544 | $32.98 | $479,661 | 14,328 | Feb 28, 2025 |
| Lis William | — | Sale | 15,000 | $32.98 | $494,700 | 38,089 | Feb 28, 2025 |
| Amado Rafael | See Remarks | Sale | 7,583 | $26.28 | $199,281 | 33,834 | Dec 30, 2024 |
| Du Ying | Chairperson & CEO | Gift | 500,000 | — | — | 494,117 | Dec 11, 2024 |