Chen Yajing

Officer · ZLAB

As of 2026-09-16, Chen Yajing has 61 Form 4 transactions on record across 1 company — 37 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market sales filed in August in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $879KIndirect: $0$879Kas of 2026-09-16
  • Direct $879K
  • Indirect $0
ZLABdirect35,635 sh$879K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

ZLAB · 61 trades
2026-08-19: Sale, 260 sh ($7K)2026-08-14: Withheld for tax, 427 sh ($11K)2026-08-14: Option exercise, 1,250 sh ($0)2026-08-14: Option exercise, 1,250 sh2026-08-14: Option exercise, 1,250 sh2026-08-14: Option exercise, 1,250 sh2026-08-14: Option exercise, 1,250 sh2026-08-11: Sale, 619 sh ($15K)2026-06-26: Sale, 2,264 sh ($40K)2026-06-25: Option exercise, 6,250 sh ($0)2026-06-25: Option exercise, 6,250 sh2026-06-25: Option exercise, 6,250 sh2026-04-06: Sale, 853 sh ($17K)2026-04-02: Sale, 5,199 sh ($106K)2026-04-02: Option exercise, 2,500 sh ($0)2026-04-02: Option exercise, 2,500 sh2026-04-02: Option exercise, 2,500 sh2026-04-01: Option exercise, 1,500 sh ($0)2026-04-01: Option exercise, 13,758 sh ($0)2026-04-01: Option exercise, 1,500 sh2026-04-01: Option exercise, 13,758 sh2026-04-01: Option exercise, 1,500 sh2026-04-01: Option exercise, 13,758 sh2026-03-13: Sale, 1,703 sh ($32K)2026-03-12: Option exercise, 4,258 sh ($0)2026-03-12: Option exercise, 4,258 sh2026-03-12: Option exercise, 4,258 sh2026-03-04: Award / grant, 27,027 sh ($0)2026-03-04: Award / grant, 11,924 sh ($0)2026-03-04: Award / grant, 83,160 sh ($0)2025-11-03: Sale, 240 sh ($6K)2025-10-31: Option exercise, 500 sh ($0)2025-10-31: Option exercise, 500 sh2025-10-31: Option exercise, 500 sh2025-10-02: Sale, 456 sh ($16K)2025-10-01: Option exercise, 920 sh ($0)2025-10-01: Option exercise, 920 sh2025-08-15: Sale, 828 sh ($29K)2025-08-15: Sale, 610 sh ($22K)2025-08-14: Option exercise, 1,250 sh ($0)2025-08-14: Option exercise, 1,250 sh2025-08-14: Option exercise, 1,250 sh2025-08-08: Sale, 4,096 sh ($139K)2025-06-26: Sale, 2,675 sh ($97K)2025-06-25: Option exercise, 6,250 sh ($0)2025-06-25: Option exercise, 6,250 sh2025-06-25: Option exercise, 6,250 sh2025-06-02: Sale, 9,618 sh ($289K)2025-04-04: Sale, 924 sh ($31K)2025-04-03: Option exercise, 2,500 sh ($0)2025-04-03: Option exercise, 2,500 sh2025-04-03: Option exercise, 2,500 sh2025-04-02: Sale, 5,280 sh ($190K)2025-04-01: Option exercise, 1,500 sh ($0)2025-04-01: Option exercise, 13,757 sh ($0)2025-04-01: Option exercise, 13,757 sh2025-04-01: Option exercise, 13,757 sh2025-04-01: Option exercise, 1,500 sh2025-04-01: Option exercise, 1,500 sh2025-03-12: Award / grant, 17,035 sh ($0)2025-03-12: Award / grant, 52,418 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-19ZLABSale260 @ $27.00$7K−0.7% of holding35,635Form 4
2026-08-11ZLABSale619 @ $25.00$15K−1.7% of holding35,072Form 4
2026-06-26ZLABSale2,264 @ $17.46$40K−6.0% of holding35,691Form 4
2026-04-06ZLABSale853 @ $20.45$17K−2.6% of holding31,705Form 4
2026-04-02ZLABSale5,199 @ $20.39$106K−13.8% of holding32,558Form 4
2026-03-13ZLABSale1,703 @ $18.63$32K−7.8% of holding19,999Form 4
2025-11-03ZLABSale240 @ $26.83$6K−1.4% of holding17,444Form 4
2025-10-02ZLABSale456 @ $34.25$16K−2.6% of holding17,184Form 4
2025-08-15ZLABSale828 @ $35.53$29K−4.7% of holding16,720Form 4
2025-08-15ZLABSale610 @ $35.27$22K−3.4% of holding17,548Form 4
2025-08-08ZLABSale4,096 @ $34.01$139K−19.5% of holding16,908Form 4
2025-06-26ZLABSale2,675 @ $36.13$97K−11.3% of holding21,004Form 4
2025-06-02ZLABSale9,618 @ $30.00$289K−35.6% of holding17,429Form 4
2025-04-04ZLABSale924 @ $33.11$31K−3.3% of holding27,047Form 4
2025-04-02ZLABSale5,280 @ $35.89$190K−17.2% of holding25,471Form 4
46 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-14ZLABWithheld for tax42735,895Form 4
2026-08-14ZLABOption exercise1,2501,250Form 4
2026-08-14ZLABOption exercise1,25036,322Form 4
2026-08-14ZLABOption exercise1,25036,322Form 4
2026-08-14ZLABOption exercise1,25036,322Form 4
2026-08-14ZLABOption exercise1,25036,322Form 4
2026-06-25ZLABOption exercise6,2500Form 4
2026-06-25ZLABOption exercise6,25037,955Form 4
2026-06-25ZLABOption exercise6,25037,955Form 4
2026-04-02ZLABOption exercise2,5002,500Form 4
2026-04-02ZLABOption exercise2,50037,757Form 4
2026-04-02ZLABOption exercise2,50037,757Form 4
2026-04-01ZLABOption exercise1,5001,500Form 4
2026-04-01ZLABOption exercise13,75827,516Form 4
2026-04-01ZLABOption exercise1,50021,499Form 4
2026-04-01ZLABOption exercise13,75835,257Form 4
2026-04-01ZLABOption exercise1,50021,499Form 4
2026-04-01ZLABOption exercise13,75835,257Form 4
2026-03-12ZLABOption exercise4,25812,777Form 4
2026-03-12ZLABOption exercise4,25821,702Form 4
2026-03-12ZLABOption exercise4,25821,702Form 4
2026-03-04ZLABAward / grant27,02727,027Form 4
2026-03-04ZLABAward / grant11,92411,924Form 4
2026-03-04ZLABAward / grant83,16083,160Form 4
2025-10-31ZLABOption exercise5000Form 4
2025-10-31ZLABOption exercise50017,684Form 4
2025-10-31ZLABOption exercise50017,684Form 4
2025-10-01ZLABOption exercise920920Form 4
2025-10-01ZLABOption exercise92017,640Form 4
2025-08-14ZLABOption exercise1,2502,500Form 4
2025-08-14ZLABOption exercise1,25018,158Form 4
2025-08-14ZLABOption exercise1,25018,158Form 4
2025-06-25ZLABOption exercise6,2506,250Form 4
2025-06-25ZLABOption exercise6,25023,679Form 4
2025-06-25ZLABOption exercise6,25023,679Form 4
2025-04-03ZLABOption exercise2,5005,000Form 4
2025-04-03ZLABOption exercise2,50027,971Form 4
2025-04-03ZLABOption exercise2,50027,971Form 4
2025-04-01ZLABOption exercise1,5003,000Form 4
2025-04-01ZLABOption exercise13,75741,274Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.