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Zai Lab Ltd (ZLAB)

Zai Lab Ltd (ZLAB) Insider Trading

Directors, officers and holders of more than 10% of ZLAB report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 320 transactions on file: 1 with code P, 10 with code S and 39 with other codes.

DateInsiderCodeShares
Oct 1, 2026Chen YajingM Exercise920
Oct 1, 2026Chen YajingF Tax Payment315
Oct 1, 2026Chen YajingM Exercise920
Aug 19, 2026Chen YajingS Sale260
Aug 14, 2026Chen YajingM Exercise1,250
Aug 14, 2026Chen YajingF Tax Payment427
Aug 14, 2026Chen YajingM Exercise1,250
Aug 12, 2026Lis WilliamS Sale8,506
Aug 11, 2026Chen YajingS Sale619
Jul 2, 2026Du YingA Award80,393
Jul 2, 2026Du YingM Exercise11,048
Jul 2, 2026Du YingF Tax Payment4,348
Jul 2, 2026Du YingM Exercise11,048
Jul 1, 2026Du YingM Exercise18,000
Jul 1, 2026GAYNOR RICHARDP Purchase1,736
Jul 1, 2026Du YingF Tax Payment7,083
Jul 1, 2026Du YingM Exercise18,000
Jun 30, 2026Du YingS Sale7,026
Jun 29, 2026Du YingM Exercise17,970
Jun 29, 2026Du YingM Exercise17,970
Jun 26, 2026Chen YajingS Sale2,264
Jun 26, 2026Edmondson Frazor Titus IIIS Sale4,103
Jun 26, 2026Du YingS Sale24,543
Jun 25, 2026Chen YajingM Exercise6,250
Jun 25, 2026Du YingM Exercise58,800
Jun 25, 2026Chen YajingM Exercise6,250
Jun 25, 2026Edmondson Frazor Titus IIIM Exercise14,600
Jun 25, 2026Du YingM Exercise58,800
Jun 25, 2026Edmondson Frazor Titus IIIM Exercise14,600
Jun 22, 2026Lis WilliamS Sale7,040
Jun 17, 2026DIEKMAN JOHN DA Award22,371
Jun 17, 2026WIRTH PETERA Award22,371
Jun 17, 2026Lis WilliamA Award22,371
Jun 17, 2026MOULDER LEON O JRA Award22,371
Jun 17, 2026Leung NisaA Award22,371
Jun 17, 2026GAYNOR RICHARDA Award22,371
Jun 17, 2026Morrison Scott WA Award22,371
Jun 17, 2026Vounatsos MichelA Award22,371
May 27, 2026Du YingG Gift33,993
May 27, 2026Du YingG Gift53,850
May 26, 2026Du YingG Gift19,857
May 19, 2026Du YingM Exercise261,092
May 19, 2026Du YingF Tax Payment117,435
May 19, 2026Du YingM Exercise261,092
May 18, 2026Du YingM Exercise50,000
May 18, 2026Du YingM Exercise50,000
May 18, 2026Du YingS Sale50,000
May 15, 2026Du YingM Exercise50,000
May 15, 2026Du YingM Exercise50,000
May 15, 2026Du YingS Sale50,000

The full Form 4 history is on the ZLAB company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.