Insider Cluster (1 insider) ·Filed Mar 3, 2026

ZLAB

Zai Lab Ltd
NEUTRAL
Impact 3/10
Horizondays Processed6mo ago
Insider cluster: 3 insiders, $1.4M total
Actionable Insight • Neutral

This pattern is consistent with pre-arranged 10b5-1 plans or routine equity compensation management. No immediate concern for fundamentals, but monitor for additional selling or changes in guidance.

DirectionNeutral
Confidencehigh
Horizondays

Price Chart

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Executive Summary

Zai Lab CEO Du Ying exercised stock options to acquire shares and sold a portion of her holdings in the open market, generating approximately $2.15 million in proceeds from sales. The majority of transactions were non-cash option exercises and tax withholding events related to equity compensation. Total open-market sales represent less than 0.1% of the company's $2.1B market cap.

Key Financial Metrics

Direction
selling
Total Value
$1.9M
Insiders
1

Key Facts

  • CEO Du Ying conducted a series of derivative exercises and open-market sales over a 6-day period.
  • Total open-market sales: 101,067 shares sold for $1,942,725.38 across three transactions.
  • Option exercises totaled 663,839 shares, with cash payments of $628,300.08; most were at $0 exercise price.
  • Tax withholding transaction: 116,936 shares surrendered valued at $2.27 million (non-cash disposition).
  • All trading activity was conducted by the CEO; no other insiders involved.

Financial Impact

$1.94M in open-market sales and $628K in option exercise payments; $2.27M in shares withheld for taxes.

share countinsider ownershippotential dilution

Risk Factors

  • Perception of insider减持 despite likely pre-planned nature
  • Potential dilution from newly exercised shares

Market Snapshot

Exchange
Nasdaq

Investment Themes

Biotech & Drug Discovery

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CONTEXT: Insider Cluster Data (11 trades, 7d window)cluster-ZLAB-1773346367134
20 reports for ZLAB
Performance horizon
100% Hit rate 3 of 3 directional calls best @ T+20▲ +13.13%May 7, 2026
Filters
Rows
Reports for ZLAB — sortable, filterable
TypeNow
Aug 21, 2026
6w ago
Insider Cluster
NEUTRAL ★ 2/10
$26.01 $26.08▲ +0.27%▼ −0.20%$24.33 (−6.46%)
Aug 13, 2026
7w ago
Insider Cluster
NEUTRAL ★ 2/10
$26.03 $26.02▼ −0.04%▲ +1.93%$24.33 (−6.53%)
Aug 13, 2026
7w ago
Insider Cluster
NEUTRAL ★ 2/10
$26.03 $26.02▼ −0.04%▲ +1.93%$24.33 (−6.53%)
Aug 12, 2026
7w ago
144
NEUTRAL ★ 2/10
$25.49 $26.72▲ +4.83%▲ +5.27%$24.33 (−4.55%)
Jul 1, 2026
13w ago
Insider Cluster
NEUTRAL ★ 2/10
$19.15 $19.35▲ +1.04%▲ +0.78%$24.33 (+27.05%)
Jun 29, 2026
13w ago
Insider Cluster
NEUTRAL ★ 3/10
$19.00 $19.08▲ +0.42%▼ −0.18%$24.33 (+28.05%)
Jun 11, 2026
16w ago
Institutional Cluster
BEARISH ★ 5/10
$17.64 $17.88▼ −1.36%▼ −0.93%$24.33 (−37.93%)
May 21, 2026
19w ago
8-K
NEUTRAL ★ 4/10
$18.61 $17.09▼ −8.17%▼ −9.83%$24.33 (+30.74%)
May 19, 2026
19w ago
Insider Cluster
NEUTRAL ★ 3/10
$18.81 $18.69▼ −0.64%▼ −1.88%$24.33 (+29.35%)
May 19, 2026
19w ago
Insider Cluster
BEARISH ★ 6/10
$18.81 $18.69▲ +0.64%▲ +1.88%$24.33 (−29.35%)
Showing 10 of 20

US Market Status

Market Closed — Opens Mon (39h 28m)

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Report published Mar 12, 2026