Yan Ming
Insider transactions at 1 company
This page shows all SEC Form 4 filings attributed to Yan Ming. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.
| Company | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| CTKB | CHIEF TECHNOLOGY OFFICER | Option Exercise | 5,525 | — | — | Nov 18, 2025 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Option Exercise | 7,363 | — | — | Aug 18, 2025 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Option Exercise | 3,683 | — | — | May 19, 2025 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Tax Withholding | 2,911 | $4.36 | $12,692 | Mar 10, 2025 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Option Exercise | 1,981 | — | — | Feb 18, 2025 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Option Exercise | 7,363 | — | — | Nov 18, 2024 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Option Exercise | 7,363 | — | — | Aug 19, 2024 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Tax Withholding | 1,456 | $5.96 | $8,678 | May 20, 2024 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Sale | 20,000 | $5.87 | $117,400 | Apr 19, 2024 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Sale | 1,500 | $7.00 | $10,500 | Apr 9, 2024 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Sale | 20,000 | $6.71 | $134,200 | Mar 18, 2024 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Option Exercise | 9,817 | — | — | Mar 11, 2024 |
| CTKB | CHIEF TECHNOLOGY OFFICER | Tax Withholding | 588 | $8.38 | $4,927 | Feb 20, 2024 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $9.43 | $188,600 | Dec 19, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $6.03 | $120,600 | Nov 18, 2023 |
| CTKB | Chief Technology Officer | Gift | 1,700,000 | — | — | Nov 14, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $4.80 | $96,000 | Oct 19, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $6.49 | $129,800 | Sep 19, 2023 |
| CTKB | Chief Technology Officer | Option Exercise | 7,363 | — | — | Aug 18, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $8.76 | $175,200 | Jul 19, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $8.18 | $163,600 | Jun 20, 2023 |
| CTKB | Chief Technology Officer | Option Exercise | 4,908 | — | — | May 18, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $9.71 | $194,200 | Apr 19, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $9.29 | $185,800 | Mar 20, 2023 |
| CTKB | Chief Technology Officer | Option Exercise | 1,981 | — | — | Feb 21, 2023 |
| CTKB | Chief Technology Officer | Sale | 897 | $13.53 | $12,136 | Feb 8, 2023 |
| CTKB | Chief Technology Officer | Sale | 1,081 | $13.50 | $14,594 | Feb 3, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $11.03 | $220,600 | Jan 19, 2023 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $10.38 | $207,600 | Dec 19, 2022 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $14.66 | $293,200 | Nov 18, 2022 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $14.42 | $288,400 | Oct 19, 2022 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $12.42 | $248,400 | Sep 19, 2022 |
| CTKB | Chief Technology Officer | Tax Withholding | 772 | $14.06 | $10,854 | Aug 18, 2022 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $11.83 | $236,600 | Jul 19, 2022 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $10.06 | $201,200 | Jun 21, 2022 |
| CTKB | Chief Technology Officer | Tax Withholding | 1,030 | $9.65 | $9,940 | May 18, 2022 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $10.34 | $206,800 | Apr 19, 2022 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $11.64 | $232,800 | Mar 21, 2022 |
| CTKB | Chief Technology Officer | Option Exercise | 10,555 | $0.92 | $9,711 | Mar 7, 2022 |
| CTKB | Chief Technology Officer | Sale | 20,000 | $13.44 | $268,800 | Feb 22, 2022 |
| CTKB | Chief Technology Officer | Sale | 14,706 | $15.01 | $220,737 | Feb 10, 2022 |
| CTKB | Chief Technology Officer | Gift | 10,000 | — | — | Dec 7, 2021 |