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Zai Lab Ltd

ZLAB Net selling
CIK 0001704292 #1762 in the set updated 17 Sep 2026
Bought (12 mo)
$65.80K
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$11.13M
$1.36M on a plan · $8.53M straight out of an exercise
Sold at will
$1.24M
16 of 41 sales
Net
−$11.07M
−$1.18M against sales at will

By person

14 insiders · 45 transactions
36.2×

Samantha (Ying) Du holds 36.2 times base salary in stock. $32.98M 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
$8.58M (15) scheduled
−$8.58M
1,221,401
0.1088%
$32.98M
+22.9%
Edmondson Frazor Titus III
Chief Legal Officer
$1.01M (8) scheduled
−$1.01M
30,346
0.0027%
$819.34K
+5.1%
Amado Rafael
See Remarks
$674.99K (5) scheduled
−$674.99K
57,022
0.0051%
$1.54M
+179.3%
Lis William
Director
$340.00K (2) scheduled
−$340.00K
41,931
0.0037%
$1.13M
−21.0%
Smiley Joshua L
See Remarks
$294.34K (3) scheduled
−$294.34K
117,602
0.0105%
$3.18M
+172.0%
Chen Yajing
Chief Financial Officer
$239.26K (8) scheduled
−$239.26K
35,635
0.0032%
$962.15K
+145.0%
GAYNOR RICHARD
Director
$65.80K (2)
+$65.80K
80,737
0.0072%
$2.18M
+73.4%
WIRTH PETER
Director
416,121
0.0371%
$11.24M
+8.7%
DIEKMAN JOHN D
Director
122,140
0.0109%
$3.30M
+37.3%
Leung Nisa
Director
96,297
0.0086%
$2.60M
+52.6%
MOULDER LEON O JR
Director
94,973
0.0085%
$2.56M
+53.8%
Vounatsos Michel
Director
72,787
0.0065%
$1.97M
+83.9%
Morrison Scott W
Director
56,904
0.0051%
$1.54M
+19.8%
Chen Kai-Xian
Director
39,525
0.0035%
$1.07M
−35.0%
Insider
Date
Role
Action
Shares
Price
Amount
Du Ying
30 Jun 2026
Chairperson & CEO
Sell
7,026
$18.53
$130.22K
Chen Yajing
26 Jun 2026
Chief Financial Officer
Sell
2,264
$17.46
$39.53K
Du Ying
26 Jun 2026
Chairperson & CEO
Sell
24,543
$17.46
$428.55K
Edmondson Frazor Titus III
26 Jun 2026
Chief Legal Officer
Sell
4,103
$17.46
$71.64K
Amado Rafael
6 Apr 2026
See Remarks
Sell
2,739
$20.45
$56.01K
Chen Yajing
6 Apr 2026
Chief Financial Officer
Sell
853
$20.45
$17.44K
Du Ying
6 Apr 2026
Chairperson & CEO
Sell
2,653
$20.45
$54.25K
Edmondson Frazor Titus III
6 Apr 2026
Chief Legal Officer
Sell
1,224
$20.45
$25.03K
Smiley Joshua L
6 Apr 2026
See Remarks
Sell
3,017
$20.45
$61.69K
Amado Rafael
13 Mar 2026
See Remarks
Sell
2,957
$18.63
$55.08K
Chen Yajing
13 Mar 2026
Chief Financial Officer
Sell
1,703
$18.63
$31.72K
Edmondson Frazor Titus III
13 Mar 2026
Chief Legal Officer
Sell
1,281
$18.63
$23.86K
Smiley Joshua L
13 Mar 2026
See Remarks
Sell
1,966
$18.63
$36.62K
Amado Rafael
31 Dec 2025
See Remarks
Sell
10,787
$17.43
$188.04K
Chen Yajing
3 Nov 2025
Chief Financial Officer
Sell
240
$26.83
$6.44K
Chen Yajing
2 Oct 2025
Chief Financial Officer
Sell
456
$34.25
$15.62K

What was left out

Form 4 filings counted 52
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 10
Sales straight out of an exercise 15
Sales at will 16
Transactions with no price 0
Shares from compensation/vesting 2,434,318
History held since 20 Jan 2021