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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 |
|---|---|---|---|---|
|
May 27, 2026 Sell |
Du Ying Chairperson & CEO |
33 993 Value: $0 |
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May 27, 2026 Sell |
Du Ying Chairperson & CEO |
53 850 Value: $0 |
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May 26, 2026 Sell |
Du Ying Chairperson & CEO |
19 857 Value: $0 |
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May 19, 2026 Buy |
Du Ying Chairperson & CEO |
261 092 Value: $454.3K |
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May 19, 2026 Buy |
Du Ying Chairperson & CEO |
261 092 Value: $454.3K |
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May 19, 2026 Sell |
Du Ying Chairperson & CEO |
117 435 Value: $2.20M |
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May 18, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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May 18, 2026 Sell |
Du Ying Chairperson & CEO |
50 000 Value: $949.8K |
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|
May 18, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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|
May 15, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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May 15, 2026 Sell |
Du Ying Chairperson & CEO |
50 000 Value: $1.04M |
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May 14, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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|
May 14, 2026 Sell |
Edmondson Frazor Titus Iii Chief Legal Officer |
3 517 Value: $71.0K |
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|
May 14, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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May 14, 2026 Sell |
Du Ying Chairperson & CEO |
50 000 Value: $1.00M |
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|
May 13, 2026 Sell |
Du Ying Chairperson & CEO |
16 231 Value: $315.6K |
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May 13, 2026 Sell |
Du Ying Chairperson & CEO |
33 769 Value: $682.9K |
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May 13, 2026 Buy |
Du Ying Chairperson & CEO |
50 000 Value: $87.0K |
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Apr 06, 2026 Sell |
Chen Yajing Chief Financial Officer |
853 Value: $17.4K |
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Apr 06, 2026 Sell |
Smiley Joshua L See Remarks |
3 017 Value: $61.7K |
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|
Apr 06, 2026 Sell |
Edmondson Frazor Titus Iii Chief Legal Officer |
1 224 Value: $25.0K |
||
|
Apr 06, 2026 Sell |
Du Ying Chairperson & CEO |
2 653 Value: $54.2K |
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|
Apr 06, 2026 Sell |
Amado Rafael See Remarks |
2 739 Value: $56.0K |
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|
Apr 02, 2026 Buy |
Amado Rafael See Remarks |
5 391 Value: $110.0K |
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|
Apr 02, 2026 Sell |
Chen Yajing Chief Financial Officer |
5 199 Value: $106.0K |
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
