Jiang Wenbin

Director · Officer · CTKB

As of 2026-09-16, Jiang Wenbin has 128 Form 4 transactions on record across 1 company — 82 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.

Reconstructed holdings

Direct: $27.5MIndirect: $0$27.5Mas of 2026-09-16
  • Direct $27.5M
  • Indirect $0
CTKBdirect5,581,985 sh$27.5M

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

CTKB · 128 trades
2026-08-18: Withheld for tax, 20,956 sh ($98K)2026-08-18: Withheld for tax, 7,062 sh ($33K)2026-08-18: Withheld for tax, 5,382 sh ($25K)2026-08-18: Withheld for tax, 2,869 sh ($13K)2026-08-18: Option exercise, 29,002 sh ($0)2026-08-18: Option exercise, 57,212 sh ($0)2026-08-18: Option exercise, 11,781 sh ($0)2026-08-18: Option exercise, 22,100 sh ($0)2026-08-18: Option exercise, 11,781 sh2026-08-18: Option exercise, 57,212 sh2026-08-18: Option exercise, 29,002 sh2026-08-18: Option exercise, 22,100 sh2026-08-18: Option exercise, 11,781 sh2026-08-18: Option exercise, 57,212 sh2026-08-18: Option exercise, 22,100 sh2026-08-18: Option exercise, 11,781 sh2026-08-18: Option exercise, 57,212 sh2026-08-18: Option exercise, 29,002 sh2026-08-18: Option exercise, 22,100 sh2026-08-18: Option exercise, 11,781 sh2026-08-18: Option exercise, 57,212 sh2026-08-18: Option exercise, 29,002 sh2026-08-18: Option exercise, 22,100 sh2026-08-18: Option exercise, 29,002 sh2026-08-18: Option exercise, 57,212 sh2026-08-18: Option exercise, 29,002 sh2026-08-18: Option exercise, 22,100 sh2026-08-18: Option exercise, 11,781 sh2026-08-18: Option exercise, 57,212 sh2026-08-18: Option exercise, 29,002 sh2026-08-18: Option exercise, 22,100 sh2026-08-18: Option exercise, 11,781 sh2026-05-18: Withheld for tax, 15,009 sh ($53K)2026-05-18: Withheld for tax, 5,032 sh ($18K)2026-05-18: Withheld for tax, 3,588 sh ($13K)2026-05-18: Withheld for tax, 1,913 sh ($7K)2026-05-18: Option exercise, 19,334 sh ($0)2026-05-18: Option exercise, 38,141 sh ($0)2026-05-18: Option exercise, 7,854 sh ($0)2026-05-18: Option exercise, 14,733 sh ($0)2026-05-18: Option exercise, 19,334 sh2026-05-18: Option exercise, 7,854 sh2026-05-18: Option exercise, 19,334 sh2026-05-18: Option exercise, 14,733 sh2026-05-18: Option exercise, 7,854 sh2026-05-18: Option exercise, 38,141 sh2026-05-18: Option exercise, 38,141 sh2026-05-18: Option exercise, 14,733 sh2026-03-10: Withheld for tax, 9,416 sh ($40K)2026-03-10: Withheld for tax, 7,747 sh ($33K)2026-03-10: Withheld for tax, 3,825 sh ($16K)2026-03-10: Award / grant, 915,407 sh ($0)2026-03-10: Option exercise, 38,669 sh ($0)2026-03-10: Option exercise, 29,467 sh ($0)2026-03-10: Option exercise, 15,708 sh ($0)2026-03-10: Award / grant, 485,545 sh ($0)2026-03-10: Option exercise, 15,708 sh2026-03-10: Option exercise, 29,467 sh2026-03-10: Option exercise, 15,708 sh2026-03-10: Option exercise, 38,669 sh2026-03-10: Option exercise, 38,669 sh2026-03-10: Option exercise, 29,467 sh2026-02-18: Withheld for tax, 1,339 sh ($6K)2026-02-18: Option exercise, 4,514 sh ($0)2026-02-18: Option exercise, 4,514 sh2026-02-18: Option exercise, 4,514 sh2025-11-18: Withheld for tax, 11,413 sh ($63K)2025-11-18: Withheld for tax, 8,697 sh ($48K)2025-11-18: Withheld for tax, 4,636 sh ($26K)2025-11-18: Withheld for tax, 2,660 sh ($15K)2025-11-18: Option exercise, 11,781 sh ($0)2025-11-18: Option exercise, 29,002 sh ($0)2025-11-18: Option exercise, 22,100 sh ($0)2025-11-18: Option exercise, 6,758 sh ($0)2025-11-18: Option exercise, 29,002 sh2025-11-18: Option exercise, 11,781 sh2025-11-18: Option exercise, 6,758 sh2025-11-18: Option exercise, 29,002 sh2025-11-18: Option exercise, 22,100 sh2025-11-18: Option exercise, 11,781 sh2025-11-18: Option exercise, 6,758 sh2025-11-18: Option exercise, 22,100 sh2025-08-18: Withheld for tax, 7,062 sh ($29K)2025-08-18: Withheld for tax, 5,382 sh ($22K)2025-08-18: Withheld for tax, 2,869 sh ($12K)2025-08-18: Withheld for tax, 1,646 sh ($7K)2025-08-18: Option exercise, 11,781 sh ($0)2025-08-18: Option exercise, 29,002 sh ($0)2025-08-18: Option exercise, 22,100 sh ($0)2025-08-18: Option exercise, 6,758 sh ($0)2025-08-18: Option exercise, 11,781 sh2025-08-18: Option exercise, 29,002 sh2025-08-18: Option exercise, 22,100 sh2025-08-18: Option exercise, 11,781 sh2025-08-18: Option exercise, 6,758 sh2025-08-18: Option exercise, 29,002 sh2025-08-18: Option exercise, 22,100 sh2025-08-18: Option exercise, 6,758 sh2025-05-19: Withheld for tax, 4,708 sh ($13K)2025-05-19: Withheld for tax, 3,588 sh ($10K)2025-05-19: Withheld for tax, 1,913 sh ($5K)2025-05-19: Withheld for tax, 1,646 sh ($4K)2025-05-19: Option exercise, 14,733 sh ($0)2025-05-19: Option exercise, 6,758 sh ($0)2025-05-19: Option exercise, 19,334 sh ($0)2025-05-19: Option exercise, 7,854 sh ($0)2025-05-19: Option exercise, 6,758 sh2025-05-19: Option exercise, 19,334 sh2025-05-19: Option exercise, 14,733 sh2025-05-19: Option exercise, 7,854 sh2025-05-19: Option exercise, 6,758 sh2025-05-19: Option exercise, 7,854 sh2025-05-19: Option exercise, 19,334 sh2025-05-19: Option exercise, 14,733 sh2025-03-10: Withheld for tax, 7,998 sh ($35K)2025-03-10: Withheld for tax, 4,658 sh ($20K)2025-03-10: Option exercise, 29,467 sh ($0)2025-03-10: Option exercise, 15,708 sh ($0)2025-03-10: Option exercise, 15,708 sh2025-03-10: Option exercise, 15,708 sh2025-03-10: Option exercise, 29,467 sh2025-03-10: Option exercise, 29,467 sh2025-03-04: Award / grant, 464,037 sh ($0)2025-03-04: Award / grant, 735,294 sh ($0)2025-02-18: Withheld for tax, 2,004 sh ($11K)2025-02-18: Option exercise, 6,758 sh ($0)2025-02-18: Option exercise, 6,758 sh2025-02-18: Option exercise, 6,758 sh

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
128 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-18CTKBWithheld for tax20,9565,561,029Form 4
2026-08-18CTKBWithheld for tax7,0625,524,773Form 4
2026-08-18CTKBWithheld for tax5,3825,502,833Form 4
2026-08-18CTKBWithheld for tax2,8695,486,115Form 4
2026-08-18CTKBOption exercise29,002299,694Form 4
2026-08-18CTKBOption exercise57,212820,054Form 4
2026-08-18CTKBOption exercise11,78127,494Form 4
2026-08-18CTKBOption exercise22,100139,973Form 4
2026-08-18CTKBOption exercise11,7815,488,984Form 4
2026-08-18CTKBOption exercise57,2125,581,985Form 4
2026-08-18CTKBOption exercise29,0025,531,835Form 4
2026-08-18CTKBOption exercise22,1005,508,215Form 4
2026-08-18CTKBOption exercise11,7815,488,984Form 4
2026-08-18CTKBOption exercise57,2125,581,985Form 4
2026-08-18CTKBOption exercise22,1005,508,215Form 4
2026-08-18CTKBOption exercise11,7815,488,984Form 4
2026-08-18CTKBOption exercise57,2125,581,985Form 4
2026-08-18CTKBOption exercise29,0025,531,835Form 4
2026-08-18CTKBOption exercise22,1005,508,215Form 4
2026-08-18CTKBOption exercise11,7815,488,984Form 4
2026-08-18CTKBOption exercise57,2125,581,985Form 4
2026-08-18CTKBOption exercise29,0025,531,835Form 4
2026-08-18CTKBOption exercise22,1005,508,215Form 4
2026-08-18CTKBOption exercise29,0025,531,835Form 4
2026-08-18CTKBOption exercise57,2125,581,985Form 4
2026-08-18CTKBOption exercise29,0025,531,835Form 4
2026-08-18CTKBOption exercise22,1005,508,215Form 4
2026-08-18CTKBOption exercise11,7815,488,984Form 4
2026-08-18CTKBOption exercise57,2125,581,985Form 4
2026-08-18CTKBOption exercise29,0025,531,835Form 4
2026-08-18CTKBOption exercise22,1005,508,215Form 4
2026-08-18CTKBOption exercise11,7815,488,984Form 4
2026-05-18CTKBWithheld for tax15,0095,477,203Form 4
2026-05-18CTKBWithheld for tax5,0325,454,071Form 4
2026-05-18CTKBWithheld for tax3,5885,439,769Form 4
2026-05-18CTKBWithheld for tax1,9135,428,624Form 4
2026-05-18CTKBOption exercise19,334328,696Form 4
2026-05-18CTKBOption exercise38,141877,266Form 4
2026-05-18CTKBOption exercise7,85439,275Form 4
2026-05-18CTKBOption exercise14,733162,073Form 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.