Ignore this insider cluster. The $220K in sales is noise for a $2.9B company. Monitor ZLAB's next pipeline catalyst (e.g., regulatory updates on VYVGART or ZEJULA) for real trading signals, not insider selling patterns.
Price Chart
Executive Summary
Two Zai Lab insiders — Director William Lis and CFO Yajing Chen — sold a combined $220K in open-market sales over an 8-day window. The total value is 0.008% of the $2.9B market cap, well below the 0.1% materiality threshold, making this a routine, non-informative cluster. Per academic literature, cluster sales are not predictive of returns, and the dollar amounts here are trivial relative to company size.
Key Financial Metrics
Key Facts
- Director William Lis sold 8,500 shares at ~$25.00 for $213K on 2026-08-12.
- CFO Yajing Chen sold 260 shares at ~$27.00 for $7K on 2026-08-19.
- Total cluster value is $220K, representing 0.008% of ZLAB's $2.9B market cap.
- Both transactions were open-market sales (code S). No insider purchases occurred in the cluster.
- The cluster is too small to be economically meaningful — no insider is signaling a bearish view.
Financial Impact
$220K total insider sales, 0.008% of market cap — trivial
Risk Factors
- No material risk from this filing — insider sales are routine and immaterial.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-ZLAB-1787379228632 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 21, 2026 6w ago | Insider Cluster | $26.01 $26.08 | ▲ +0.27% | ▼ −0.20% | $24.33 (−6.46%) |
Aug 13, 2026 7w ago | Insider Cluster | $26.03 $26.02 | ▼ −0.04% | ▲ +1.93% | $24.33 (−6.53%) |
Aug 13, 2026 7w ago | Insider Cluster | $26.03 $26.02 | ▼ −0.04% | ▲ +1.93% | $24.33 (−6.53%) |
Aug 12, 2026 7w ago | 144 | $25.49 $26.72 | ▲ +4.83% | ▲ +5.27% | $24.33 (−4.55%) |
Jul 1, 2026 13w ago | Insider Cluster | $19.15 $19.35 | ▲ +1.04% | ▲ +0.78% | $24.33 (+27.05%) |
Jun 29, 2026 13w ago | Insider Cluster | $19.00 $19.08 | ▲ +0.42% | ▼ −0.18% | $24.33 (+28.05%) |
Jun 11, 2026 16w ago | Institutional Cluster | $17.64 $17.88 | ▼ −1.36% | ▼ −0.93% | $24.33 (−37.93%) |
May 21, 2026 19w ago | 8-K | $18.61 $17.09 | ▼ −8.17% | ▼ −9.83% | $24.33 (+30.74%) |
May 19, 2026 19w ago | Insider Cluster | $18.81 $18.69 | ▼ −0.64% | ▼ −1.88% | $24.33 (+29.35%) |
May 19, 2026 19w ago | Insider Cluster | $18.81 $18.69 | ▲ +0.64% | ▲ +1.88% | $24.33 (−29.35%) |
US Market Status
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