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Zai Lab Ltd

ZLAB Net selling
CIK 0001704292 #1762 in the set updated 17 Sep 2026
Bought (120 mo)
$1.02M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$176.05M
$4.34M on a plan · $102.18M straight out of an exercise
Sold at will
$69.53M
165 of 317 sales
Net
−$175.02M
−$68.51M against sales at will

By person

19 insiders · 351 transactions
66.2×

Samantha (Ying) Du holds 66.2 times base salary in stock. $60.22M of shares against $908.73K in salary for 2025.

Salary from the company's own proxy. The shares are what Samantha (Ying) Du last reported holding, valued at $27.00, the price American Depositary Shares was last bought or sold at on the open market here, on 19 Aug 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Du Ying
Chairperson & CEO
$133.86M (156) scheduled
−$133.86M
2,230,529
0.1987%
$60.22M
+2.5%
Reinhart Harald
See Remarks
$16.40M (34) scheduled
−$16.40M
86,716
0.0077%
$2.34M
+259.9%
Fu Tao
President & COO
$12.46M (40) scheduled
−$12.46M
372,668
0.0332%
$10.06M
−7.4%
Edmondson Frazor Titus III
Chief Legal Officer
$2.99M (22) scheduled
−$2.99M
53,415
0.0048%
$1.44M
+92.7%
Amado Rafael
See Remarks
$2.10M (14)
−$2.10M
57,022
0.0051%
$1.54M
Lis William
Director
$1.82M (8) scheduled
−$1.82M
76,045
0.0068%
$2.05M
+43.0%
Cho William Ki Chul
Chief Financial Officer
$1.80M (2)
−$1.80M
103,747
0.0092%
$2.80M
−5.7%
Chen Yajing
Chief Financial Officer
$1.12M (22) scheduled
−$1.12M
35,635
0.0032%
$962.15K
+490.6%
Chen Kai-Xian
Director
$746.62K (2)
−$746.62K
71,950
0.0064%
$1.94M
+28.2%
Morrison Scott W
Director
$715.09K (1)
−$715.09K
64,249
0.0057%
$1.73M
+774.7%
Smiley Joshua L
See Remarks
$670.04K (5)
$1.17M (8)
−$501.11K
117,602
0.0105%
$3.18M
DIEKMAN JOHN D
Director
$444.94K (4)
−$444.94K
189,755
0.0169%
$5.12M
+74.4%
GAYNOR RICHARD
Director
$65.80K (2)
$136.43K (2) scheduled
−$70.62K
89,649
0.0080%
$2.42M
+905.9%
WIRTH PETER
Director
$285.44K (1)
$277.57K (2)
+$7.87K
766,736
0.0683%
$20.70M
+11.8%
Leung Nisa
Director
8,082,324
0.7201%
$218.22M
−11.5%
MOULDER LEON O JR
Director
116,588
0.0104%
$3.15M
+268.8%
Liang Yi
CCO & President, Greater China
104,847
0.0093%
$2.83M
+0.7%
Vounatsos Michel
Director
72,787
0.0065%
$1.97M
Sandler Alan B.
Head of Global Dev., Oncology
56,910
0.0051%
$1.54M
−1.8%
Insider
Date
Role
Action
Shares
Price
Amount
GAYNOR RICHARD
1 Jul 2026
Director
Buy
1,736
$19.05
$33.07K
GAYNOR RICHARD
17 Mar 2026
Director
Buy
1,731
$18.91
$32.73K
Smiley Joshua L
10 Sep 2025
See Remarks
Buy
10,000
$28.91
$289.10K
Smiley Joshua L
13 May 2024
See Remarks
Buy
3,000
$21.40
$64.20K
Smiley Joshua L
1 Mar 2024
See Remarks
Buy
3,000
$20.83
$62.49K
Smiley Joshua L
14 Dec 2023
See Remarks
Buy
4,000
$29.90
$119.60K
Smiley Joshua L
16 Nov 2023
See Remarks
Buy
5,000
$26.93
$134.65K
WIRTH PETER
8 Dec 2021
Director
Buy
4,000
$71.36
$285.44K
Showing 250 of 351 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 255
Amendments (4/A) skipped 6
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 27
Sales straight out of an exercise 125
Sales at will 165
Transactions with no price 0
Shares from compensation/vesting 8,553,821
Sales filed before the plan box existed 102
History held since 20 Jan 2021