Du Ying

Director · Officer · ZLAB

As of 2026-09-16, Du Ying has 152 Form 4 transactions on record across 1 company — 72 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 June in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $30.2MIndirect: $0$30.2Mas of 2026-09-16
  • Direct $30.2M
  • Indirect $0
ZLABdirect1,225,749 sh$30.2M

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 · 152 trades
2026-07-02: Withheld for tax, 4,348 sh ($83K)2026-07-02: Option exercise, 11,048 sh ($0)2026-07-02: Award / grant, 80,393 sh ($0)2026-07-02: Option exercise, 11,048 sh2026-07-02: Option exercise, 11,048 sh2026-07-01: Withheld for tax, 7,083 sh ($136K)2026-07-01: Option exercise, 18,000 sh ($0)2026-07-01: Option exercise, 18,000 sh2026-07-01: Option exercise, 18,000 sh2026-06-30: Sale, 7,026 sh ($130K)2026-06-29: Option exercise, 17,970 sh ($0)2026-06-29: Option exercise, 17,970 sh2026-06-29: Option exercise, 17,970 sh2026-06-26: Sale, 24,543 sh ($429K)2026-06-25: Option exercise, 58,800 sh ($0)2026-06-25: Option exercise, 58,800 sh2026-06-25: Option exercise, 58,800 sh2026-05-27: Gift, 33,993 sh ($0)2026-05-27: Gift, 53,850 sh ($0)2026-05-26: Gift, 19,857 sh ($0)2026-05-19: Withheld for tax, 117,435 sh ($2.2M)2026-05-19: Option exercise, 261,092 sh ($454K)2026-05-19: Option exercise, 261,092 sh ($0)2026-05-18: Sale, 50,000 sh ($950K)2026-05-18: Option exercise, 50,000 sh ($87K)2026-05-18: Option exercise, 50,000 sh ($0)2026-05-15: Sale, 50,000 sh ($1.0M)2026-05-15: Option exercise, 50,000 sh ($87K)2026-05-15: Option exercise, 50,000 sh ($0)2026-05-14: Sale, 50,000 sh ($1.0M)2026-05-14: Option exercise, 50,000 sh ($87K)2026-05-14: Option exercise, 50,000 sh ($0)2026-05-13: Sale, 33,769 sh ($683K)2026-05-13: Sale, 16,231 sh ($316K)2026-05-13: Option exercise, 50,000 sh ($87K)2026-05-13: Option exercise, 50,000 sh ($0)2026-04-06: Sale, 2,653 sh ($54K)2026-04-02: Sale, 5,576 sh ($114K)2026-04-02: Option exercise, 6,750 sh ($0)2026-04-02: Option exercise, 6,750 sh2026-04-02: Option exercise, 6,750 sh2026-04-01: Option exercise, 3,400 sh ($0)2026-04-01: Option exercise, 10,800 sh ($0)2026-04-01: Option exercise, 10,800 sh2026-04-01: Option exercise, 3,400 sh2026-04-01: Option exercise, 10,800 sh2026-04-01: Option exercise, 3,400 sh2026-03-11: Sale, 1,067 sh ($20K)2026-03-11: Award / grant, 32,419 sh ($0)2026-03-11: Award / grant, 353,430 sh ($0)2026-03-10: Withheld for tax, 116,936 sh ($2.3M)2026-03-10: Option exercise, 261,092 sh ($454K)2026-03-10: Option exercise, 2,655 sh ($0)2026-03-10: Option exercise, 261,092 sh ($0)2026-03-10: Option exercise, 2,655 sh2026-03-10: Option exercise, 2,655 sh2026-03-09: Sale, 50,000 sh ($951K)2026-03-09: Option exercise, 50,000 sh ($87K)2026-03-09: Option exercise, 50,000 sh ($0)2026-03-06: Sale, 50,000 sh ($971K)2026-03-06: Option exercise, 50,000 sh ($87K)2026-03-06: Option exercise, 50,000 sh ($0)2026-03-05: Sale, 50,000 sh ($961K)2026-03-05: Option exercise, 50,000 sh ($87K)2026-03-05: Option exercise, 50,000 sh ($0)2026-03-04: Sale, 35,710 sh ($690K)2026-03-04: Sale, 14,290 sh ($268K)2026-03-04: Option exercise, 50,000 sh ($87K)2026-03-04: Option exercise, 50,000 sh ($0)2026-03-04: Award / grant, 25,579 sh ($0)2025-12-11: Gift, 377,520 sh ($0)2025-12-10: Gift, 303,378 sh ($0)2025-08-29: Withheld for tax, 251,319 sh ($8.2M)2025-08-29: Option exercise, 604,376 sh ($725K)2025-08-29: Option exercise, 604,376 sh ($0)2025-08-13: Sale, 46,387 sh ($1.6M)2025-08-13: Option exercise, 46,387 sh ($28K)2025-08-13: Option exercise, 46,387 sh ($0)2025-08-12: Sale, 50,000 sh ($1.7M)2025-08-12: Option exercise, 50,000 sh ($30K)2025-08-12: Option exercise, 50,000 sh ($0)2025-08-11: Sale, 50,000 sh ($1.7M)2025-08-11: Option exercise, 50,000 sh ($30K)2025-08-11: Option exercise, 50,000 sh ($0)2025-08-08: Sale, 50,000 sh ($1.7M)2025-08-08: Option exercise, 50,000 sh ($30K)2025-08-08: Option exercise, 50,000 sh ($0)2025-07-02: Sale, 7,072 sh ($249K)2025-07-02: Award / grant, 44,194 sh ($0)2025-07-01: Option exercise, 18,000 sh ($0)2025-07-01: Option exercise, 18,000 sh2025-07-01: Option exercise, 18,000 sh2025-06-30: Sale, 6,918 sh ($246K)2025-06-27: Option exercise, 17,970 sh ($0)2025-06-27: Option exercise, 17,970 sh2025-06-26: Sale, 23,669 sh ($855K)2025-06-25: Option exercise, 58,800 sh ($0)2025-06-25: Option exercise, 58,800 sh2025-06-25: Option exercise, 58,800 sh2025-05-14: Sale, 46,006 sh ($1.3M)2025-05-14: Option exercise, 46,389 sh ($28K)2025-05-14: Sale, 383 sh ($11K)2025-05-14: Option exercise, 46,389 sh ($0)2025-05-13: Sale, 47,780 sh ($1.4M)2025-05-13: Sale, 2,220 sh ($64K)2025-05-13: Option exercise, 50,000 sh ($30K)2025-05-13: Option exercise, 50,000 sh ($0)2025-05-12: Sale, 49,384 sh ($1.5M)2025-05-12: Option exercise, 50,000 sh ($30K)2025-05-12: Sale, 616 sh ($18K)2025-05-12: Option exercise, 50,000 sh ($0)2025-05-09: Sale, 46,362 sh ($1.4M)2025-05-09: Sale, 3,638 sh ($110K)2025-05-09: Option exercise, 50,000 sh ($30K)2025-05-09: Option exercise, 50,000 sh ($0)2025-04-04: Sale, 2,945 sh ($98K)2025-04-03: Option exercise, 6,750 sh ($0)2025-04-03: Option exercise, 6,750 sh2025-04-03: Option exercise, 6,750 sh2025-04-02: Sale, 5,808 sh ($208K)2025-04-01: Option exercise, 10,800 sh ($0)2025-04-01: Option exercise, 3,400 sh ($0)2025-04-01: Option exercise, 10,800 sh2025-04-01: Option exercise, 3,400 sh2025-04-01: Option exercise, 10,800 sh2025-04-01: Option exercise, 3,400 sh2025-03-17: Gift, 6,521 sh ($0)2025-03-14: Gift, 10,406 sh ($0)2025-03-14: Gift, 3,885 sh ($0)2025-03-14: Gift, 5,651 sh ($0)2025-03-10: Award / grant, 10,620 sh ($0)2025-03-10: Award / grant, 252,585 sh ($0)2025-03-05: Sale, 25,296 sh ($907K)2025-03-05: Sale, 21,093 sh ($742K)2025-03-05: Option exercise, 46,389 sh ($28K)2025-03-05: Option exercise, 46,389 sh ($0)2025-03-04: Sale, 37,752 sh ($1.3M)2025-03-04: Sale, 6,665 sh ($218K)2025-03-04: Sale, 5,583 sh ($190K)2025-03-04: Option exercise, 50,000 sh ($30K)2025-03-04: Option exercise, 50,000 sh ($0)2025-03-03: Sale, 24,280 sh ($801K)2025-03-03: Sale, 23,110 sh ($734K)2025-03-03: Sale, 2,610 sh ($87K)2025-03-03: Option exercise, 50,000 sh ($30K)2025-03-03: Option exercise, 50,000 sh ($0)2025-02-28: Sale, 46,943 sh ($1.6M)2025-02-28: Sale, 2,857 sh ($96K)2025-02-28: Option exercise, 50,000 sh ($30K)2025-02-28: Sale, 200 sh ($7K)2025-02-28: Option exercise, 50,000 sh ($0)2024-12-11: Gift, 500,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-06-30ZLABSale7,026 @ $18.53$130K−0.6% of holding1,203,784Form 4
2026-06-26ZLABSale24,543 @ $17.46$429K−2.0% of holding1,192,840Form 4
2026-05-18ZLABSale50,000 @ $19.00$950K−4.3% of holding1,122,626Form 4
2026-05-15ZLABSale50,000 @ $20.74$1.0M−4.3% of holding1,122,626Form 4
2026-05-14ZLABSale50,000 @ $20.09$1.0M−4.3% of holding1,122,626Form 4
2026-05-13ZLABSale33,769 @ $20.22$683K−2.9% of holding1,122,626Form 4
2026-05-13ZLABSale16,231 @ $19.44$316K−1.4% of holding1,156,395Form 4
2026-04-06ZLABSale2,653 @ $20.45$54K−0.2% of holding1,122,626Form 4
2026-04-02ZLABSale5,576 @ $20.39$114K−0.5% of holding1,125,279Form 4
2026-03-11ZLABSale1,067 @ $19.08$20K−0.1% of holding1,109,905Form 4
2026-03-09ZLABSale50,000 @ $19.03$951K−4.9% of holding964,161Form 4
2026-03-06ZLABSale50,000 @ $19.42$971K−4.9% of holding964,161Form 4
2026-03-05ZLABSale50,000 @ $19.22$961K−4.9% of holding964,161Form 4
2026-03-04ZLABSale35,710 @ $19.32$690K−3.6% of holding964,161Form 4
2026-03-04ZLABSale14,290 @ $18.78$268K−1.4% of holding999,871Form 4
2025-08-13ZLABSale46,387 @ $35.47$1.6M−8.0% of holding536,962Form 4
2025-08-12ZLABSale50,000 @ $34.25$1.7M−8.5% of holding536,962Form 4
2025-08-11ZLABSale50,000 @ $34.64$1.7M−8.5% of holding536,962Form 4
2025-08-08ZLABSale50,000 @ $34.74$1.7M−8.5% of holding536,962Form 4
2025-07-02ZLABSale7,072 @ $35.23$249K−1.3% of holding536,962Form 4
2025-06-30ZLABSale6,918 @ $35.52$246K−1.3% of holding526,034Form 4
2025-06-26ZLABSale23,669 @ $36.13$855K−4.4% of holding514,982Form 4
2025-05-14ZLABSale46,006 @ $28.08$1.3M−8.7% of holding480,234Form 4
2025-05-14ZLABSale383 @ $28.83$11K−0.1% of holding479,851Form 4
2025-05-13ZLABSale47,780 @ $28.56$1.4M−9.0% of holding482,071Form 4
2025-05-13ZLABSale2,220 @ $28.89$64K−0.5% of holding479,851Form 4
2025-05-12ZLABSale49,384 @ $29.44$1.5M−9.3% of holding480,467Form 4
2025-05-12ZLABSale616 @ $29.92$18K−0.1% of holding479,851Form 4
2025-05-09ZLABSale46,362 @ $29.58$1.4M−8.8% of holding483,489Form 4
2025-05-09ZLABSale3,638 @ $30.16$110K−0.8% of holding479,851Form 4
2025-04-04ZLABSale2,945 @ $33.11$98K−0.6% of holding479,851Form 4
2025-04-02ZLABSale5,808 @ $35.89$208K−1.2% of holding476,046Form 4
2025-03-05ZLABSale25,296 @ $35.84$907K−4.9% of holding494,117Form 4
2025-03-05ZLABSale21,093 @ $35.20$742K−3.9% of holding519,413Form 4
2025-03-04ZLABSale37,752 @ $33.55$1.3M−7.0% of holding499,700Form 4
2025-03-04ZLABSale6,665 @ $32.69$218K−1.2% of holding537,452Form 4
2025-03-04ZLABSale5,583 @ $33.99$190K−1.1% of holding494,117Form 4
2025-03-03ZLABSale24,280 @ $32.99$801K−4.7% of holding496,727Form 4
2025-03-03ZLABSale23,110 @ $31.75$734K−4.2% of holding521,007Form 4
2025-03-03ZLABSale2,610 @ $33.50$87K−0.5% of holding494,117Form 4
2025-02-28ZLABSale46,943 @ $34.52$1.6M−8.7% of holding494,317Form 4
2025-02-28ZLABSale2,857 @ $33.59$96K−0.5% of holding541,260Form 4
2025-02-28ZLABSale200 @ $35.05$7K−0.0% of holding494,117Form 4
109 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-07-02ZLABWithheld for tax4,3481,221,401Form 4
2026-07-02ZLABOption exercise11,04833,146Form 4
2026-07-02ZLABAward / grant80,39380,393Form 4
2026-07-02ZLABOption exercise11,0481,225,749Form 4
2026-07-02ZLABOption exercise11,0481,225,749Form 4
2026-07-01ZLABWithheld for tax7,0831,214,701Form 4
2026-07-01ZLABOption exercise18,00036,000Form 4
2026-07-01ZLABOption exercise18,0001,221,784Form 4
2026-07-01ZLABOption exercise18,0001,221,784Form 4
2026-06-29ZLABOption exercise17,97017,970Form 4
2026-06-29ZLABOption exercise17,9701,210,810Form 4
2026-06-29ZLABOption exercise17,9701,210,810Form 4
2026-06-25ZLABOption exercise58,8000Form 4
2026-06-25ZLABOption exercise58,8001,217,383Form 4
2026-06-25ZLABOption exercise58,8001,217,383Form 4
2026-05-27ZLABGift33,9931,212,433Form 4
2026-05-27ZLABGift53,8501,158,583Form 4
2026-05-26ZLABGift19,8571,246,426Form 4
2026-05-19ZLABWithheld for tax117,4351,266,283Form 4
2026-05-19ZLABOption exercise261,0921,383,718Form 4
2026-05-19ZLABOption exercise261,0920Form 4
2026-05-18ZLABOption exercise50,0001,172,626Form 4
2026-05-18ZLABOption exercise50,000261,092Form 4
2026-05-15ZLABOption exercise50,0001,172,626Form 4
2026-05-15ZLABOption exercise50,000311,092Form 4
2026-05-14ZLABOption exercise50,0001,172,626Form 4
2026-05-14ZLABOption exercise50,000361,092Form 4
2026-05-13ZLABOption exercise50,0001,172,626Form 4
2026-05-13ZLABOption exercise50,000411,092Form 4
2026-04-02ZLABOption exercise6,75013,500Form 4
2026-04-02ZLABOption exercise6,7501,130,855Form 4
2026-04-02ZLABOption exercise6,7501,130,855Form 4
2026-04-01ZLABOption exercise3,4000Form 4
2026-04-01ZLABOption exercise10,80010,800Form 4
2026-04-01ZLABOption exercise10,8001,120,705Form 4
2026-04-01ZLABOption exercise3,4001,124,105Form 4
2026-04-01ZLABOption exercise10,8001,120,705Form 4
2026-04-01ZLABOption exercise3,4001,124,105Form 4
2026-03-11ZLABAward / grant32,41932,419Form 4
2026-03-11ZLABAward / grant353,430353,430Form 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.