$ZLAB insider trading
Over the last 12 months, Zai Lab insiders reported 3 buys totaling $355K and 32 sales totaling $7.1M across SEC Form 4 filings. 37% of those filings were made under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- $355K 3 events
- Sold · 12m
- $7.1M 32 events
- Events · 12m
- 35 Form 4 filings, grouped
- Insiders · 12m
- 7 distinct reporters
- 10b5-1 share
- 37% of events, not dollars
All insider trades
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Aug 19, 2026 | Chen YajingChief Financial Officer · O | ▼ Sale | 260 | $27 | $7K | -0.7% | plan |
| Aug 12, 2026 | Lis WilliamD | ▼ Sale | 8,506 | $25 | $213K | -16.9% | plan |
| Aug 11, 2026 | Chen YajingChief Financial Officer · O | ▼ Sale | 619 | $25 | $15K | -1.7% | plan |
| Jul 1, 2026 | GAYNOR RICHARDD | ▲ Buy | 1,736 | $19.05 | $33K | +2.2% | plan |
| Jun 30, 2026 | Du YingChairperson & CEO · O·D | ▼ Sale | 7,026 | $18.53 | $130K | -0.6% | — |
| Jun 26, 2026 | Edmondson Frazor Titus IIIChief Legal Officer · O | ▼ Sale | 4,103 | $17.46 | $72K | -11.9% | — |
| Jun 26, 2026 | Du YingChairperson & CEO · O·D | ▼ Sale | 24,543 | $17.46 | $429K | -2% | — |
| Jun 26, 2026 | Chen YajingChief Financial Officer · O | ▼ Sale | 2,264 | $17.46 | $40K | -6% | — |
| Jun 22, 2026 | Lis WilliamD | ▼ Sale | 7,040 | $18.09 | $127K | -12.2% | plan |
| Apr 6, 2026 | Smiley Joshua LSee Remarks · O | ▼ Sale | 3,017 | $20.45 | $62K | -2.5% | — |
| Apr 6, 2026 | Edmondson Frazor Titus IIIChief Legal Officer · O | ▼ Sale | 1,224 | $20.45 | $25K | -5% | — |
| Apr 6, 2026 | Du YingChairperson & CEO · O·D | ▼ Sale | 2,653 | $20.45 | $54K | -0.2% | — |
| Apr 6, 2026 | Chen YajingChief Financial Officer · O | ▼ Sale | 853 | $20.45 | $17K | -2.6% | — |
| Apr 6, 2026 | Amado RafaelSee Remarks · O | ▼ Sale | 2,739 | $20.45 | $56K | -4.6% | — |
| Apr 2, 2026 | Smiley Joshua LSee Remarks · O | ▼ Sale | 9,614 | $20.39 | $196K | -7.4% | — |
| Apr 2, 2026 | Edmondson Frazor Titus IIIChief Legal Officer · O | ▼ Sale | 4,194 | $20.39 | $86K | -14.6% | — |
| Apr 2, 2026 | Du YingChairperson & CEO · O·D | ▼ Sale | 5,576 | $20.39 | $114K | -0.5% | — |
| Apr 2, 2026 | Chen YajingChief Financial Officer · O | ▼ Sale | 5,199 | $20.39 | $106K | -13.8% | — |
| Apr 2, 2026 | Amado RafaelSee Remarks · O | ▼ Sale | 9,910 | $20.39 | $202K | -14.2% | — |
| Mar 17, 2026 | GAYNOR RICHARDD | ▲ Buy | 1,731 | $18.91 | $33K | +3.2% | plan |
| Mar 13, 2026 | Smiley Joshua LSee Remarks · O | ▼ Sale | 1,966 | $18.63 | $37K | -2.1% | — |
| Mar 13, 2026 | Edmondson Frazor Titus IIIChief Legal Officer · O | ▼ Sale | 1,281 | $18.63 | $24K | -16.5% | — |
| Mar 13, 2026 | Chen YajingChief Financial Officer · O | ▼ Sale | 1,703 | $18.63 | $32K | -7.8% | — |
| Mar 13, 2026 | Amado RafaelSee Remarks · O | ▼ Sale | 2,957 | $18.63 | $55K | -6.2% | — |
| Mar 11, 2026 | Du YingChairperson & CEO · O·D | ▼ Sale | 1,067 | $19.08 | $20K | -0.1% | plan |
| Mar 9, 2026 | Du YingChairperson & CEO · O·D | ▼ Sale | 100,000 | $19.22 | $1.9M | -9.4% | plan · 2 tranches |
| Mar 5, 2026 | Edmondson Frazor Titus IIIChief Legal Officer · O | ▼ Sale | 15,569 | $19.06 | $297K | -81.6% | plan |
| Mar 5, 2026 | Du YingChairperson & CEO · O·D | ▼ Sale | 100,000 | $19.19 | $1.9M | -9.4% | plan · 3 tranches |
| Mar 3, 2026 | Amado RafaelSee Remarks · O | ▼ Sale | 10,000 | $17.38 | $174K | -19.1% | plan |
| Dec 31, 2025 | Amado RafaelSee Remarks · O | ▼ Sale | 10,787 | $17.43 | $188K | -17.1% | — |
| Dec 16, 2025 | Edmondson Frazor Titus IIIChief Legal Officer · O | ▼ Sale | 8,651 | $17.14 | $148K | -31.2% | plan |
| Nov 21, 2025 | Edmondson Frazor Titus IIIChief Legal Officer · O | ▼ Sale | 14,328 | $19.78 | $283K | -34.1% | plan |
| Nov 3, 2025 | Chen YajingChief Financial Officer · O | ▼ Sale | 240 | $26.83 | $6K | -1.4% | — |
| Oct 2, 2025 | Chen YajingChief Financial Officer · O | ▼ Sale | 456 | $34.25 | $16K | -2.6% | — |
| Sep 10, 2025 | Smiley Joshua LSee Remarks · O | ▲ Buy | 10,000 | $28.91 | $289K | +13.1% | — |
| Aug 18, 2025 | Smiley Joshua LSee Remarks · O | ▼ Sale | 6,641 | $36.24 | $241K | -8% | — |
| Aug 18, 2025 | Edmondson Frazor Titus IIIChief Legal Officer · O | ▼ Sale | 1,883 | $36.24 | $68K | -4.3% | — |
| Aug 15, 2025 | Chen YajingChief Financial Officer · O | ▼ Sale | 1,438 | $35.42 | $51K | -7.9% | plan · 2 tranches |
| Aug 13, 2025 | Du YingChairperson & CEO · O·D | ▼ Sale | 96,387 | $34.84 | $3.4M | -15.2% | plan · 2 tranches |
| Aug 11, 2025 | Du YingChairperson & CEO · O·D | ▼ Sale | 100,000 | $34.69 | $3.5M | -15.7% | plan · 2 tranches |
| Aug 8, 2025 | Amado RafaelSee Remarks · O | ▼ Sale | 3,000 | $35 | $105K | -6.6% | plan |
| Aug 8, 2025 | Chen YajingChief Financial Officer · O | ▼ Sale | 4,096 | $34.01 | $139K | -19.5% | plan |
Every $ZLAB filing on this page is one API call away
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? Zai Lab filings can reach your inbox instead.
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $ZLAB feed.