Zai Lab Ltd (ZLAB) insider buying and selling
In the last 90 days at Zai Lab Ltd (ZLAB), no insider made an open-market purchase and 2 insiders made 3 open-market sales worth $235K, as reported on SEC Form 4. All 3 sales were scheduled in advance or made to cover tax on vesting shares, so they say less about the insider's view of the stock. Over the last 12 months, 1 insider bought $66K of the stock, led by RICHARD GAYNOR (Director), who bought $33K on Jul 1, 2026; 4 insiders sold $3.1M, of which $3.1M was scheduled or tax-related.
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Unlock ZLABRecent open-market insider trades
Trades by the same insider within a week are shown as one line.
No discretionary open-market insider trades were reported in the last 12 months.
Scheduled and tax-related sales
Sales made under a pre-arranged 10b5-1 plan or to cover tax on vesting shares. They are listed separately because they are not a fresh decision to sell.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Yajing Chen CFO | 10b5-1 sale | 260 | $27.00 | $7K | |
| William Lis Director | 10b5-1 sale | 8,506 | $25.00 | $213K | |
| Yajing Chen CFO | 10b5-1 sale | 619 | $25.00 | $15K | |
| RICHARD GAYNOR Director | 10b5-1 purchase | 1,736 | $19.05 | $33K | |
| Ying Du CEO | Sell to cover 2 trades | 31,569 | avg. $17.70 | $559K | |
| Frazor Titus Edmondson III CLO | Sell to cover | 4,103 | $17.46 | $72K | |
| Yajing Chen CFO | Sell to cover | 2,264 | $17.46 | $40K | |
| William Lis Director | 10b5-1 sale | 7,040 | $18.09 | $127K |
What the ZLAB insider trades really mean
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Questions about ZLAB insider trading
Who bought Zai Lab Ltd (ZLAB) stock recently?
Insiders who bought Zai Lab Ltd stock on the open market in the last 12 months: RICHARD GAYNOR ($66K). The most recent purchase was reported on Jul 1, 2026.
Are insiders buying or selling ZLAB?
Insiders made no discretionary trades in ZLAB over the last 12 months; the only sales were scheduled or tax-related.
What is a sell-to-cover or 10b5-1 sale?
A 10b5-1 sale is scheduled in advance under a pre-arranged plan, and a sell-to-cover sale is made to pay tax on vesting shares. Neither is a fresh decision to sell, so they say less about an insider's view than a discretionary sale.
Where does this data come from?
Officers, directors and large shareholders report their trades to the SEC on Form 4. This page lists the open-market purchases and sales by individual insiders from those public filings; funds and other institutions are not shown.
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How to read this page
Officers, directors and large shareholders must report their trades in company shares to the SEC on Form 4. This page lists open-market purchases and sales by individual insiders: trades made on the stock exchange at the going price. Funds and other institutions are not shown here.
Information from SEC EDGAR Form 4 filings, shown for general information only. It is not financial advice and does not recommend buying or selling any security. Trades are shown by transaction date and may be reported up to two business days later.