Yajing Chen

CIK 1985694 · Chief Financial Officer · last filed 2026-06-29

Yajing Chen is a Chief Financial Officer who has filed 43 SEC Form 4 insider transactions across 1 company since 2023. The most recent filing, for ZLAB, was dated Jun 29, 2026. Across all open-market trades the lifetime net is −$1.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $666.0K across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Disclosed Exposure

$666.0K

Companies

1

Total Filings

43

Lifetime Open-Market Net

-$1.10M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.

Symbol	Role	Shares	Price	Disclosed Exposure	Lifetime OM Net	Filings	Latest Filed
ZLAB	Chief Financial Officer	35,691	$18.66	$666.0K	-$1.10M	22	2026-06-29

Recent Filings

43 filings

Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-06-29	ZLAB	Mixed	+3,986	-$39.5K	EDGAR
2026-06-26	—	Notice (144)	−2,264	-$39.5K	EDGAR
2026-04-08	ZLAB	Sell (S)	−853	-$17.4K	EDGAR
2026-04-06	—	Notice (144)	−853	-$17.4K	EDGAR
2026-04-03	ZLAB	Mixed	+12,559	-$106.0K	EDGAR
2026-04-02	—	Notice (144)	−5,199	-$106.0K	EDGAR
2026-03-16	ZLAB	Mixed	+2,555	-$31.7K	EDGAR
2026-03-13	—	Notice (144)	−1,703	-$31.7K	EDGAR
2025-11-04	ZLAB	Mixed	+260	-$6.4K	EDGAR
2025-11-03	—	Notice (144)	−240	-$6.4K	EDGAR

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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.