Yajing Chen Zai Lab LTD (ZLAB) insider trading activity

Yajing Chen is Chief Financial Officer of Zai Lab Ltd. Currently has a direct ownership of 17,444 shares of ZLAB, which is worth approximately $379,407. The most recent transaction as insider was on Nov 03, 2025, when has been sold 240 shares (American Depositary Shares) at a price of $26.83 per share, resulting in proceeds of $6,439. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 17.4K

4.33% 3M change

12.59% 12M change

Total Value Held $379,407

Yajing Chen Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 03 2025	SELL Open market or private sale	$6,439 $26.83 p/Share	240 Reduced 1.36%	17,444 American Depositary Sh...
Oct 31 2025	BUY Exercise of conversion of derivative security	-	500 Added 2.75%	17,684 American Depositary Sh...
Oct 02 2025	SELL Open market or private sale	$15,618 $34.25 p/Share	456 Reduced 2.59%	17,184 American Depositary Sh...
Oct 01 2025	BUY Exercise of conversion of derivative security	-	920 Added 4.96%	17,640 American Depositary Sh...
Aug 15 2025	SELL Open market or private sale	$50,905 $35.4 p/Share	1,438 Reduced 7.92%	16,720 American Depositary Sh...
Aug 14 2025	BUY Exercise of conversion of derivative security	-	1,250 Added 6.44%	18,158 American Depositary Sh...
Aug 08 2025	SELL Open market or private sale	$139,304 $34.01 p/Share	4,096 Reduced 19.5%	16,908 American Depositary Sh...
Jun 26 2025	SELL Open market or private sale	$96,647 $36.13 p/Share	2,675 Reduced 11.3%	21,004 American Depositary Sh...
Jun 25 2025	BUY Exercise of conversion of derivative security	-	6,250 Added 20.88%	23,679 American Depositary Sh...
Jun 02 2025	SELL Open market or private sale	$288,540 $30.0 p/Share	9,618 Reduced 35.56%	17,429 American Depositary Sh...
Apr 04 2025	SELL Open market or private sale	$30,593 $33.11 p/Share	924 Reduced 3.3%	27,047 American Depositary Sh...
Apr 03 2025	BUY Exercise of conversion of derivative security	-	2,500 Added 8.2%	27,971 American Depositary Sh...
Apr 02 2025	SELL Open market or private sale	$189,499 $35.89 p/Share	5,280 Reduced 17.17%	25,471 American Depositary Sh...
Apr 01 2025	BUY Exercise of conversion of derivative security	-	15,257 Added 33.16%	30,751 American Depositary Sh...
Nov 04 2024	SELL Open market or private sale	$5,120 $30.66 p/Share	167 Reduced 1.07%	15,494 American Depositary Sh...
Nov 01 2024	BUY Exercise of conversion of derivative security	-	500 Added 3.09%	15,661 American Depositary Sh...
Oct 02 2024	SELL Open market or private sale	$7,645 $25.4 p/Share	301 Reduced 1.95%	15,161 American Depositary Sh...
Oct 01 2024	BUY Exercise of conversion of derivative security	-	920 Added 5.62%	15,462 American Depositary Sh...
Aug 15 2024	SELL Open market or private sale	$6,777 $16.06 p/Share	422 Reduced 2.82%	14,542 American Depositary Sh...
Aug 14 2024	BUY Exercise of conversion of derivative security	-	1,250 Added 7.71%	14,964 American Depositary Sh...
Jun 26 2024	SELL Open market or private sale	$38,556 $17.9 p/Share	2,154 Reduced 13.57%	13,714 American Depositary Sh...
Jun 25 2024	BUY Exercise of conversion of derivative security	-	6,250 Added 28.26%	15,868 American Depositary Sh...
Apr 04 2024	SELL Open market or private sale	$13,241 $15.67 p/Share	845 Reduced 8.08%	9,618 American Depositary Sh...
Apr 03 2024	BUY Exercise of conversion of derivative security	$39,750 $15.9 p/Share	2,500 Added 19.29%	10,463 American Depositary Sh...
Apr 02 2024	SELL Open market or private sale	$8,381 $16.15 p/Share	519 Reduced 6.12%	7,963 American Depositary Sh...

Yajing Chen

Chief Financial Officer

Cambridge, MA

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