143 transactions on file.
| Date | Insider | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-08-18 | Jiang Wenbin PRESIDENT AND CEO · Director Tax withholding | Tax withholding | −2,869 | $4.67 | −13.4K | 5,486,115 |
| 2026-08-18 | Jiang Wenbin PRESIDENT AND CEO · Director Option exercise | Option exercise | +22,100 | - | - | 5,508,215 |
| 2026-08-18 | Jiang Wenbin PRESIDENT AND CEO · Director Tax withholding | Tax withholding | −5,382 | $4.67 | −25.13K | 5,502,833 |
| 2026-08-18 | Jiang Wenbin PRESIDENT AND CEO · Director Option exercise | Option exercise | +29,002 | - | - | 5,531,835 |
| 2026-08-18 | Jiang Wenbin PRESIDENT AND CEO · Director Option exercise | Option exercise | +11,781 | - | - | 5,488,984 |
138 more transactions are on Measure
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The assistant answers from what CTKB has actually filed: 6 annual reports filed with the SEC, 143 Form 4 filings from the last year and 3 funds that hold it. Every figure in a reply links to the filing it came from, so an answer can be checked rather than believed.
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Source
From SEC Form 4 filings, filed within two business days of a transaction.
Past transactions say nothing about future ones, and none of this is investment advice.
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Watch CTKB and every open-market Form 4 worth a row (a purchase, a senior officer's sale, anything at a million dollars) lands in the bell and a daily email, with the 10b5-1 word on it when the filing says so. Free.
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The table above says who traded. This says what CTKB did over the following 30, 90 and 180 days after each open-market purchase and sale, from this company’s own record rather than a study about companies in general, and with the number of transactions shown beside every average.
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