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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 -59.93. In total, the insiders bought 2.81M and sold 815.11K 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
|
-59.93 |
| ● Buy | 2.81M shares |
| ● Sell | 815.11K shares |
|
68% Buy Activity
Negligible or No Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Mar 10, 2026 Buy |
Du Ying Chairperson & CEO |
261 092 Value: $454.3K |
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|
Mar 10, 2026 Buy |
Du Ying Chairperson & CEO |
2 655 Value: $51.7K |
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Mar 09, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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Mar 09, 2026 Sell |
Du Ying Chairperson & CEO |
50 000 Value: $951.5K |
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|
Mar 09, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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|
Mar 06, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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|
Mar 06, 2026 Sell |
Du Ying Chairperson & CEO |
50 000 Value: $970.9K |
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|
Mar 05, 2026 Sell |
Edmondson Frazor Titus Iii Chief Legal Officer |
15 569 Value: $296.7K |
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|
Mar 05, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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Mar 05, 2026 Sell |
Du Ying Chairperson & CEO |
50 000 Value: $961.1K |
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|
Mar 04, 2026 Buy |
Amado Rafael See Remarks |
14 905 Value: $287.2K |
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Mar 04, 2026 Buy |
Du Ying Chairperson & CEO |
25 579 Value: $492.9K |
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|
Mar 04, 2026 Buy |
Edmondson Frazor Titus Iii Chief Legal Officer |
11 924 Value: $229.8K |
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|
Mar 04, 2026 Buy |
Smiley Joshua L See Remarks |
17 887 Value: $344.7K |
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Mar 04, 2026 Buy |
Chen Yajing Chief Financial Officer |
11 924 Value: $229.8K |
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|
Mar 04, 2026 Buy |
Chen Yajing Chief Financial Officer |
27 027 Value: $520.8K |
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Mar 04, 2026 Buy |
Smiley Joshua L See Remarks |
33 783 Value: $651.0K |
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Mar 04, 2026 Buy |
Smiley Joshua L See Remarks |
103 950 Value: $2.00M |
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|
Mar 04, 2026 Buy |
Edmondson Frazor Titus Iii Chief Legal Officer |
83 160 Value: $1.60M |
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|
Mar 04, 2026 Buy |
Edmondson Frazor Titus Iii Chief Legal Officer |
27 027 Value: $520.8K |
||
|
Mar 04, 2026 Buy |
Chen Yajing Chief Financial Officer |
83 160 Value: $1.60M |
||
|
Mar 04, 2026 Buy |
Amado Rafael See Remarks |
103 950 Value: $2.00M |
||
|
Mar 04, 2026 Buy |
Amado Rafael See Remarks |
33 783 Value: $651.0K |
||
|
Mar 04, 2026 Sell |
Du Ying Chairperson & CEO |
14 290 Value: $268.3K |
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|
Mar 04, 2026 Sell |
Du Ying Chairperson & CEO |
35 710 Value: $689.8K |
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
