Zai Lab Limited (ZLAB) Insider Trading

Over the last 3 months, ZLAB insiders made 1 open-market buy and 21 sales, a net sale of -$5.1M (SEC Form 4). Over the last 6 months, 73 institutions increased and 85 reduced their position (13F).

Insider Activity

Sentiment
1/100
Buys (3m)
1
Sells (3m)
21
Net (3m)
-$5.1M
Insiders buyingFirst buy in 2 quarters
Insider trades by month Buys Sells
Nov
Dec
Jan
Mar
Apr
May
Context3-month price -10.9%Institutions reducing (13F)
DateInsiderTypeSharesPrice
May 21, 2026Du Yingdirector, officer: Chairperson & CEOTax117,435$18.75
May 21, 2026Du Yingdirector, officer: Chairperson & CEOOption261,092$1.74
May 19, 2026Du Yingdirector, officer: Chairperson & CEOOption50,000$1.74
May 19, 2026Du Yingdirector, officer: Chairperson & CEOSell50,000$20.74
May 15, 2026Du Yingdirector, officer: Chairperson & CEOOption50,000$1.74
May 15, 2026Du Yingdirector, officer: Chairperson & CEOSell16,231$19.44
May 15, 2026Du Yingdirector, officer: Chairperson & CEOSell50,000$20.09
May 15, 2026Edmondson Frazor Titus IIIofficer: Chief Legal OfficerSell3,517$20.19
May 15, 2026Du Yingdirector, officer: Chairperson & CEOSell33,769$20.22
Apr 8, 2026Chen Yajingofficer: Chief Financial OfficerSell853$20.45
Apr 8, 2026Edmondson Frazor Titus IIIofficer: Chief Legal OfficerSell1,224$20.45
Apr 8, 2026Smiley Joshua Lofficer: See RemarksSell3,017$20.45
Apr 8, 2026Amado Rafaelofficer: See RemarksSell2,739$20.45
Apr 8, 2026Du Yingdirector, officer: Chairperson & CEOSell2,653$20.45
Apr 3, 2026Amado Rafaelofficer: See RemarksSell9,910$20.39
Apr 3, 2026Chen Yajingofficer: Chief Financial OfficerOption13,758—
Apr 3, 2026Edmondson Frazor Titus IIIofficer: Chief Legal OfficerSell4,194$20.39
Apr 3, 2026Du Yingdirector, officer: Chairperson & CEOOption10,800—
Apr 3, 2026Edmondson Frazor Titus IIIofficer: Chief Legal OfficerOption13,758—
Apr 3, 2026Smiley Joshua Lofficer: See RemarksOption32,062—
Apr 3, 2026Edmondson Frazor Titus IIIofficer: Chief Legal OfficerOption830—
Apr 3, 2026Edmondson Frazor Titus IIIofficer: Chief Legal OfficerOption5,031—
Apr 3, 2026Chen Yajingofficer: Chief Financial OfficerSell5,199$20.39
Apr 3, 2026Smiley Joshua Lofficer: See RemarksOption7,145—
Apr 3, 2026Edmondson Frazor Titus IIIofficer: Chief Legal OfficerGrant11,924—
Apr 3, 2026Chen Yajingofficer: Chief Financial OfficerOption2,500—
Apr 3, 2026Smiley Joshua Lofficer: See RemarksGrant17,887—
Apr 3, 2026Amado Rafaelofficer: See RemarksOption19,523—
Apr 3, 2026Amado Rafaelofficer: See RemarksGrant14,905—
Apr 3, 2026Edmondson Frazor Titus IIIofficer: Chief Legal OfficerOption2,671—

Source: ZLAB SEC Form 4 filings, latest May 21, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their ZLAB positions over the last 6 months (SEC Form 13F).

Increased
73
New positions
37
Reduced
85
Sold out
88
Largest moves
InstitutionActionSharesFiled
RTW INVESTMENTS, LPIncreased7.0MFeb 17, 2026
RTW INVESTMENTS, LPReduced6.6MMay 15, 2026
RA CAPITAL MANAGEMENT, L.P.New Position5.7MMay 15, 2026
FRAZIER LIFE SCIENCES MANAGEMENT, L.P.Unchanged1.9MMay 15, 2026
FRAZIER LIFE SCIENCES MANAGEMENT, L.P.Increased1.9MFeb 13, 2026
CLEARBRIDGE INVESTMENTS, LLCReduced1.8MFeb 11, 2026
UBS GROUP AGIncreased1.8MJan 29, 2026
CITADEL ADVISORS LLCIncreased1.7MMay 15, 2026
CITADEL ADVISORS LLCIncreased1.7MFeb 17, 2026
BAMCO INC /NY/Increased1.7MMay 15, 2026
FMR LLCReduced1.4MFeb 17, 2026
ADAR1 CAPITAL MANAGEMENT, LLCIncreased1.4MMay 18, 2026
BAMCO INC /NY/Increased1.4MFeb 17, 2026
FMR LLCReduced1.3MMay 15, 2026
ADAR1 CAPITAL MANAGEMENT, LLCIncreased1.2MFeb 18, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.

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