Arkolith/Insider Trading/ZLAB/Form 4

Du Ying

Chairperson & CEO, DirectorZai Lab Ltd (ZLAB) · full profile →Form 4 · filed May 21, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
3
2 non-derivative · 1 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
May 19, 2026Option exercise(M)261K$1.74$454K1.4M
May 19, 2026Tax withholding(F)117K$18.75$2.2M1.3M

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
May 19, 2026Option exercise(M)261K—$00

Transaction Codes

M
Option exercise / conversion
F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000905148-26-002610) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML