Arkolith/Insider Trading/ZLAB/Form 4

Du Ying

Chairperson & CEO, DirectorZai Lab Ltd (ZLAB) · full profile →Form 4 · filed May 19, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$2.0M
Net Open-Market Flow
-$2.0M
Transactions
6
4 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
May 18, 2026Option exercise(M)50K$1.74$87K1.2M
May 18, 2026Sell(S)50K$19.00$950K1.1M
May 15, 2026Option exercise(M)50K$1.74$87K1.2M
May 15, 2026Sell(S)50K$20.74$1.0M1.1M

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
May 18, 2026Option exercise(M)50K—$0261K
May 15, 2026Option exercise(M)50K—$0311K

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000905148-26-002524) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML