Ying Du insider trades: Zai Lab (ZLAB) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Ying reports to the SEC
Open-market buys and sales
31 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 30, 2026 | ZLAB | ↓ Sell | 7,026 | $18.53 | $130K | Direct | Jul 1, 2026 (1d) |
| Jun 26, 2026 | ZLAB | ↓ Sell | 24,543 | $17.46 | $429K | Direct | Jun 29, 2026 (3d) |
| May 18, 2026 | ZLAB | ↓ Sell | 100,000 | $19.87 | $2.0M | Direct | May 19, 2026 (1d) |
| May 14, 2026 | ZLAB | ↓ Sell | 100,000 | $20.03 | $2.0M | Direct | May 15, 2026 (1d) |
| Apr 6, 2026 | ZLAB | ↓ Sell | 2,653 | $20.45 | $54K | Direct | Apr 8, 2026 (2d) |
| Apr 2, 2026 | ZLAB | ↓ Sell | 5,576 | $20.39 | $114K | Direct | Apr 3, 2026 (1d) |
| Mar 11, 2026 | ZLAB | ↓ Sell | 1,067 | $19.08 | $20K | Direct | Mar 12, 2026 (1d) |
| Mar 9, 2026 | ZLAB | ↓ Sell | 100,000 | $19.22 | $1.9M | Direct | Mar 10, 2026 (1d) |
| Mar 5, 2026 | ZLAB | ↓ Sell | 100,000 | $19.19 | $1.9M | Direct | Mar 6, 2026 (1d) |
| Aug 13, 2025 | ZLAB | ↓ Sell | 96,387 | $34.84 | $3.4M | Direct | Aug 14, 2025 (1d) |
| Aug 11, 2025 | ZLAB | ↓ Sell | 100,000 | $34.69 | $3.5M | Direct | Aug 12, 2025 (1d) |
| Jul 2, 2025 | ZLAB | ↓ Sell | 7,072 | $35.23 | $249K | Direct | Jul 3, 2025 (1d) |
| Jun 30, 2025 | ZLAB | ↓ Sell | 6,918 | $35.52 | $246K | Direct | Jul 1, 2025 (1d) |
| Jun 26, 2025 | ZLAB | ↓ Sell | 23,669 | $36.13 | $855K | Direct | Jun 27, 2025 (1d) |
| May 14, 2025 | ZLAB | ↓ Sell | 96,389 | $28.34 | $2.7M | Direct | May 15, 2025 (1d) |
| May 12, 2025 | ZLAB | ↓ Sell | 100,000 | $29.53 | $3.0M | Direct | May 13, 2025 (1d) |
| Apr 4, 2025 | ZLAB | ↓ Sell | 2,945 | $33.11 | $98K | Direct | Apr 7, 2025 (3d) |
| Apr 2, 2025 | ZLAB | ↓ Sell | 5,808 | $35.89 | $208K | Direct | Apr 3, 2025 (1d) |
| Mar 5, 2025 | ZLAB | ↓ Sell | 96,389 | $34.48 | $3.3M | Direct | Mar 6, 2025 (1d) |
| Mar 3, 2025 | ZLAB | ↓ Sell | 100,000 | $33.46 | $3.3M | Direct | Mar 4, 2025 (1d) |
| Jul 1, 2024 | ZLAB | ↓ Sell | 7,013 | $17.48 | $123K | Direct | Jul 2, 2024 (1d) |
| Jun 26, 2024 | ZLAB | ↓ Sell | 23,939 | $17.90 | $429K | Direct | Jun 27, 2024 (1d) |
| Apr 2, 2024 | ZLAB | ↓ Sell | 5,787 | $16.15 | $93K | Direct | Apr 3, 2024 (1d) |
| Jan 3, 2024 | ZLAB | ↓ Sell | 8,380 | $26.12 | $219K | Direct | Jan 3, 2024 (0d) |
| Sep 7, 2021 | ZLAB | ↓ Sell | 29,785 | $150.73 | $4.5M | Direct | Sep 8, 2021 (1d) |
| Sep 3, 2021 | ZLAB | ↓ Sell | 81,326 | $145.80 | $11.9M | Direct | Sep 3, 2021 (0d) |
| Aug 3, 2021 | ZLAB | ↓ Sell | 111,111 | $144.99 | $16.1M | Direct | Aug 3, 2021 (0d) |
| Jul 2, 2021 | ZLAB | ↓ Sell | 111,111 | $175.61 | $19.5M | Direct | Jul 2, 2021 (0d) |
| Jun 2, 2021 | ZLAB | ↓ Sell | 111,111 | $176.30 | $19.6M | Direct | Jun 2, 2021 (0d) |
| May 4, 2021 | ZLAB | ↓ Sell | 111,111 | $160.05 | $17.8M | Direct | May 4, 2021 (0d) |
| Apr 7, 2021 | ZLAB | ↓ Sell | 111,112 | $128.19 | $14.2M | Direct | Apr 7, 2021 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ZLAB insiders
Open-market trades in the last 12 months
About Ying Du's insider trades
Ying Du is Chairperson & CEO at Zai Lab (ZLAB). Since Apr 7, 2021, Ying has reported no open-market purchases and 31 sales worth $133.9M on SEC Form 4. In the last 12 months: 9 sales ($8.6M).
Their filings also include option exercises (34 filings), grants and awards (13 filings), gifts (9 filings), shares withheld for taxes (8 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ZLAB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.