Zai Lab (ZLAB) stock: insider trades, news & valuation
Net sellingShare price and insider trades
Zai Lab insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $66K and 6 sold $11.1M of ZLAB stock on the open market.
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ZLAB insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | $33K | 1 | $235K | 3 |
| Q2 2026 | — | 0 | $5.8M | 21 |
| Q1 2026 | $33K | 1 | $4.5M | 12 |
| Q4 2025 | — | 0 | $642K | 5 |
Valuation, profit and volume
Summary
Over the past 12 months, 1 Zai Lab Ltd insider reported open-market purchases totaling $66K, while 6 insiders reported sales totaling $11.1M. Among insiders with enough purchase history to measure, Richard Gaynor (Director) has the highest Insider Score at 62. 20 of 41 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 21SEC | Yajing ChenCFO | Sell Plan | 26035,635 held (−1%) | $27.00 | $7K | -7.4% | — |
| Aug 13SEC | William LisDirector | Sell Plan | 8,50641,931 held (−17%) | $25.00 | $213K | -0.0% | — |
| Aug 13SEC | Yajing ChenCFO | Sell Plan | 61935,072 held (−2%) | $25.00 | $15K | -0.0% | — |
| Jul 6SEC | Richard GaynorDirector | Buy | 1,73680,737 held (+2%) | $19.05 | $33K | +31.2% | 62 |
| Jul 1SEC | Ying DuCEO | Sell | 7,0261,203,784 held (−1%) | $18.53 | $130K | +34.9% | — |
| Jun 29SEC | Ying DuCEO | Sell | 24,5431,192,840 held (−2%) | $17.46 | $429K | +43.1% | — |
| Jun 29SEC | Frazor Titus Edmondson IIIGeneral Counsel | Sell | 4,10330,346 held (−12%) | $17.46 | $72K | +43.1% | — |
| Jun 29SEC | Yajing ChenCFO | Sell | 2,26435,691 held (−6%) | $17.46 | $40K | +43.1% | — |
| Jun 24SEC | William LisDirector | Sell Plan | 7,04050,437 held (−12%) | $18.09 | $127K | +38.1% | — |
| May 19SEC | Ying DuCEO | Sell Plan | 50,0001,122,626 held (−4%) | $20.74 | $1.0M | +20.5% | — |
| May 19SEC | Ying DuCEO | Sell Plan | 50,0001,122,626 held (−4%) | $19.00 | $950K | +31.5% | — |
| May 15SEC | Ying DuCEO | Sell Plan | 50,0001,122,626 held (−4%) | $20.09 | $1.0M | +24.4% | — |
| May 15SEC | Ying DuCEO | Sell Plan | 33,7691,122,626 held (−3%) | $20.22 | $683K | +23.6% | — |
| May 15SEC | Ying DuCEO | Sell Plan | 16,2311,156,395 held (−1%) | $19.44 | $316K | +28.5% | — |
| May 15SEC | Frazor Titus Edmondson IIIGeneral Counsel | Sell Plan | 3,51719,849 held (−15%) | $20.19 | $71K | +23.8% | — |
| Apr 8SEC | Joshua L SmileySee Remarks | Sell | 3,017117,602 held (−3%) | $20.45 | $62K | +22.2% | — |
| Apr 8SEC | Rafael AmadoSee Remarks | Sell | 2,73957,022 held (−5%) | $20.45 | $56K | +22.2% | — |
| Apr 8SEC | Ying DuCEO | Sell | 2,6531,122,626 held (−0%) | $20.45 | $54K | +22.2% | — |
| Apr 8SEC | Frazor Titus Edmondson IIIGeneral Counsel | Sell | 1,22423,366 held (−5%) | $20.45 | $25K | +22.2% | — |
| Apr 8SEC | Yajing ChenCFO | Sell | 85331,705 held (−3%) | $20.45 | $17K | +22.2% | — |
| Apr 3SEC | Rafael AmadoSee Remarks | Sell | 9,91059,761 held (−14%) | $20.39 | $202K | +22.6% | — |
| Apr 3SEC | Joshua L SmileySee Remarks | Sell | 9,614120,619 held (−7%) | $20.39 | $196K | +22.6% | — |
| Apr 3SEC | Ying DuCEO | Sell | 5,5761,125,279 held (−0%) | $20.39 | $114K | +22.6% | — |
| Apr 3SEC | Yajing ChenCFO | Sell | 5,19932,558 held (−14%) | $20.39 | $106K | +22.6% | — |
| Apr 3SEC | Frazor Titus Edmondson IIIGeneral Counsel | Sell | 4,19424,590 held (−15%) | $20.39 | $86K | +22.6% | — |
| Mar 19SEC | Richard GaynorDirector | Buy | 1,73156,630 held (+3%) | $18.91 | $33K | +32.2% | 62 |
| Mar 16SEC | Rafael AmadoSee Remarks | Sell | 2,95744,757 held (−6%) | $18.63 | $55K | +34.1% | — |
| Mar 16SEC | Joshua L SmileySee Remarks | Sell | 1,96691,026 held (−2%) | $18.63 | $37K | +34.1% | — |
| Mar 16SEC | Yajing ChenCFO | Sell | 1,70319,999 held (−8%) | $18.63 | $32K | +34.1% | — |
| Mar 16SEC | Frazor Titus Edmondson IIIGeneral Counsel | Sell | 1,2816,494 held (−16%) | $18.63 | $24K | +34.1% | — |
| Mar 12SEC | Ying DuCEO | Sell Plan | 1,0671,109,905 held (−0%) | $19.08 | $20K | +31.0% | — |
| Mar 10SEC | Ying DuCEO | Sell Plan | 50,000964,161 held (−5%) | $19.42 | $971K | +28.7% | — |
| Mar 10SEC | Ying DuCEO | Sell Plan | 50,000964,161 held (−5%) | $19.03 | $952K | +31.3% | — |
| Mar 6SEC | Ying DuCEO | Sell Plan | 50,000964,161 held (−5%) | $19.22 | $961K | +30.0% | — |
| Mar 6SEC | Ying DuCEO | Sell Plan | 35,710964,161 held (−4%) | $19.32 | $690K | +29.3% | — |
| Mar 6SEC | Frazor Titus Edmondson IIIGeneral Counsel | Sell Plan | 15,5693,517 held (−82%) | $19.06 | $297K | +31.1% | — |
| Mar 6SEC | Ying DuCEO | Sell Plan | 14,290999,871 held (−1%) | $18.78 | $268K | +33.1% | — |
| Mar 5SEC | Rafael AmadoSee Remarks | Sell Plan | 10,00042,391 held (−19%) | $17.38 | $174K | +43.8% | — |
| Jan 2SEC | Rafael AmadoSee Remarks | Sell | 10,78752,391 held (−17%) | $17.43 | $188K | +43.4% | — |
| Dec 18SEC | Frazor Titus Edmondson IIIGeneral Counsel | Sell Plan | 8,65119,086 held (−31%) | $17.14 | $148K | +45.8% | — |
| Nov 25SEC | Frazor Titus Edmondson IIIGeneral Counsel | Sell Plan | 14,32827,737 held (−34%) | $19.78 | $283K | +26.3% | — |
| Nov 4SEC | Yajing ChenCFO | Sell | 24017,444 held (−1%) | $26.83 | $6K | -6.9% | — |
| Oct 3SEC | Yajing ChenCFO | Sell | 45617,184 held (−3%) | $34.25 | $16K | -27.0% | — |
Insiders at Zai Lab Ltd
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Ying DuCEO | — | $8.6M | Jul 1, 2026 | — |
| Frazor Titus Edmondson IIIGeneral Counsel | — | $1.0M | Jun 29, 2026 | — |
| Rafael AmadoSee Remarks | — | $675K | Apr 8, 2026 | — |
| William LisDirector | — | $340K | Aug 13, 2026 | — |
| Joshua L SmileySee Remarks | — | $294K | Apr 8, 2026 | — |
| Yajing ChenCFO | — | $239K | Aug 21, 2026 | — |
| Richard GaynorDirector | $66K | — | Jul 6, 2026 | 62 |
ZLAB stock: common questions
Are Zai Lab Ltd insiders buying ZLAB stock?
In the past 12 months, 1 insiders reported open-market purchases of ZLAB worth $66K. The latest was Director Richard Gaynor bought $33K of ZLAB at $19.05.
Are Zai Lab Ltd insiders selling ZLAB stock?
6 insiders reported sales worth $11.1M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ZLAB's 52-week range?
Over the past year ZLAB has traded between $16.30 and $32.70. It last closed at $24.99 on Oct 9, 2026.