Transaction · 0000905148-26-004359

Chen Yajing

Chen Yajing, CFO, reported a transaction classified as withholding at Zai Lab Ltd involving 315.000000 shares for an estimated $8032.50. Reported holdings after the transaction were 36240.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

withholdingSEC transaction code FCFO
ZLABZai Lab Ltd
Filing timeOct 05
Trade dateOct 01, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position tradedUnavailableCalculated only for code-P purchases and code-S sales.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$25.70
Pre-filing
1mo ago -1.6%1w ago +0.0%1d ago +0.0%
Returns since
7d30d90d180d1y

ZLAB price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
ZLAB since 2026-10-05Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
withholding
Code F
Identifier
0000905148-26-004359
American Depositary Shares
Transaction date
Oct 01, 2026
Filed Oct 05, 2026, 08:44 PM · 4d delay
Shares
315 sh
$25.50 per share
Estimated value
-$8.03k
Computed from shares × price
Holdings after
36.2k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership
-16score
Filing-only score

-16

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Financial Officer

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADS…

  2. F2

    ADSs acquired upon vesting of Restricted Share Units ("RSUs").

  3. F3

    Each RSU represents a contingent right to receive one ADS.

  4. F4

    These ADSs were withheld to cover taxes upon vesting of RSUs.

  5. F5

    The RSUs vested in equal annual installments over five years beginning on 10/01/2022, the first anniversary of the date of grant. Vested shares were delivered to the reporting person following vesting…

Original filing · 0000905148-26-004359
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ZLAB