CTKB Insider Activity
View recent SEC Form 4 insider transactions for CTKB, including purchases, sales, option exercises, and other insider filings.
| Date | Insider | Type | Quantity | Price | Total Value | Shares Owned |
|---|---|---|---|---|---|---|
| Aug 18, 2026 | Chin Richard | Exercise | 6,107 | $0.00 | $0.00 | 28,499 |
| Aug 18, 2026 | Holder Michael | Exercise | 2,181 | $0.00 | $0.00 | 62,875 |
| Aug 18, 2026 | Jiang Wenbin | Exercise | 22,100 | $0.00 | $0.00 | 5,508,215 |
| Aug 18, 2026 | Jiang Wenbin | Tax Withheld | 5,382 | $4.67 | $25,133.94 | 5,502,833 |
| Aug 18, 2026 | Jiang Wenbin | Exercise | 29,002 | $0.00 | $0.00 | 5,531,835 |
| Aug 18, 2026 | Jiang Wenbin | Tax Withheld | 7,062 | $4.67 | $32,979.54 | 5,524,773 |
| Aug 18, 2026 | Jiang Wenbin | Exercise | 57,212 | $0.00 | $0.00 | 5,581,985 |
| Aug 18, 2026 | Jiang Wenbin | Tax Withheld | 20,956 | $4.67 | $97,864.52 | 5,561,029 |
| Aug 18, 2026 | Jiang Wenbin | Exercise | 11,781 | $0.00 | $0.00 | 5,488,984 |
| Aug 18, 2026 | Jiang Wenbin | Tax Withheld | 2,869 | $4.67 | $13,398.23 | 5,486,115 |
| Aug 18, 2026 | McCombe William D. | Tax Withheld | 2,111 | $4.67 | $9,858.37 | 115,386 |
| Aug 18, 2026 | McCombe William D. | Exercise | 6,320 | $0.00 | $0.00 | 117,497 |
| Aug 18, 2026 | McCombe William D. | Exercise | 13,051 | $0.00 | $0.00 | 128,437 |
| Aug 18, 2026 | McCombe William D. | Tax Withheld | 4,392 | $4.67 | $20,510.64 | 124,045 |
| Aug 18, 2026 | McCombe William D. | Exercise | 16,049 | $0.00 | $0.00 | 140,094 |
| Aug 18, 2026 | McCombe William D. | Tax Withheld | 5,401 | $4.67 | $25,222.67 | 134,693 |
| Aug 18, 2026 | MUIR GLENN P | Exercise | 3,086 | $0.00 | $0.00 | 3,086 |
| Aug 18, 2026 | Yan Ming | Exercise | 7,363 | $0.00 | $0.00 | 4,804,051 |
| Aug 18, 2026 | Yan Ming | Tax Withheld | 1,778 | $4.67 | $8,303.26 | 4,802,273 |
| Aug 18, 2026 | Yan Ming | Exercise | 5,525 | $0.00 | $0.00 | 4,807,798 |
| Aug 18, 2026 | Yan Ming | Tax Withheld | 1,346 | $4.67 | $6,285.82 | 4,806,452 |
| Aug 18, 2026 | Yan Ming | Exercise | 6,162 | $0.00 | $0.00 | 4,812,614 |
| Aug 18, 2026 | Yan Ming | Tax Withheld | 1,501 | $4.67 | $7,009.67 | 4,811,113 |
| Aug 18, 2026 | Yan Ming | Tax Withheld | 3,463 | $4.67 | $16,172.21 | 4,821,870 |
| Aug 18, 2026 | Yan Ming | Exercise | 14,220 | $0.00 | $0.00 | 4,825,333 |
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