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Buy ZLAB
Zai Lab Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -44.53. In total, the insiders bought 2.1M and sold 532K ZLAB shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-44.53 |
| ● Buy | 2.1M shares |
| ● Sell | 532K shares |
|
72% Buy Activity
Negligible or No Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jul 02, 2026 Sell |
Du Ying Chairperson & CEO |
4 348 Value: $83.1K |
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|
Jul 02, 2026 Buy |
Du Ying Chairperson & CEO |
80 393 Value: $1.54M |
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|
Jul 02, 2026 Buy |
Du Ying Chairperson & CEO |
11 048 Value: $211.2K |
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Jul 02, 2026 Buy |
Du Ying Chairperson & CEO |
11 048 Value: $211.2K |
||
|
Jul 01, 2026 Buy |
Du Ying Chairperson & CEO |
18 000 Value: $344.7K |
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|
Jul 01, 2026 Sell |
Du Ying Chairperson & CEO |
7 083 Value: $135.6K |
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|
Jul 01, 2026 Buy |
Du Ying Chairperson & CEO |
18 000 Value: $344.7K |
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|
Jul 01, 2026 Buy |
Gaynor Richard Director |
1 736 Value: $33.1K |
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|
Jun 30, 2026 Sell |
Du Ying Chairperson & CEO |
7 026 Value: $130.2K |
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|
Jun 29, 2026 Buy |
Du Ying Chairperson & CEO |
17 970 Value: $330.8K |
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|
Jun 29, 2026 Buy |
Du Ying Chairperson & CEO |
17 970 Value: $330.8K |
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|
Jun 26, 2026 Sell |
Chen Yajing Chief Financial Officer |
2 264 Value: $39.5K |
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|
Jun 26, 2026 Sell |
Edmondson Frazor Titus Iii Chief Legal Officer |
4 103 Value: $71.6K |
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|
Jun 26, 2026 Sell |
Du Ying Chairperson & CEO |
24 543 Value: $428.5K |
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Jun 25, 2026 Buy |
Du Ying Chairperson & CEO |
58 800 Value: $1.09M |
||
|
Jun 25, 2026 Buy |
Chen Yajing Chief Financial Officer |
6 250 Value: $115.8K |
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Jun 25, 2026 Buy |
Edmondson Frazor Titus Iii Chief Legal Officer |
14 600 Value: $270.4K |
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|
Jun 25, 2026 Buy |
Du Ying Chairperson & CEO |
58 800 Value: $1.09M |
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|
Jun 25, 2026 Buy |
Edmondson Frazor Titus Iii Chief Legal Officer |
14 600 Value: $270.4K |
||
|
Jun 25, 2026 Buy |
Chen Yajing Chief Financial Officer |
6 250 Value: $115.8K |
||
|
Jun 22, 2026 Sell |
Lis William Director |
7 040 Value: $127.4K |
||
|
Jun 17, 2026 Buy |
Lis William Director |
22 371 Value: $400.0K |
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|
Jun 17, 2026 Buy |
Wirth Peter Director |
22 371 Value: $400.0K |
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|
Jun 17, 2026 Buy |
Diekman John D Director |
22 371 Value: $400.0K |
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|
Jun 17, 2026 Buy |
Leung Nisa Director |
22 371 Value: $400.0K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
