CTKB's three largest insider shareholders as of September 29, 2026 are Capital Management, L.P. Ra (Director, 13.38Mn shares), Wenbin Jiang (President And Ceo, 7.90Mn shares), Wenbin Jiang (President And Ceo, 5.56Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Wenbin Jiang | President And Ceo | 13,462,570 | 0 | 13,462,570 | 41.4% | 20 Aug, 2026 |
| 2 | Capital Management, L.P. Ra | Director, TenPercentOwner | 0 | 13,381,054 | 13,381,054 | 41.2% | 16 Mar, 2022 |
| 3 | Ming Yan | Chief Technology Officer | 4,821,870 | 0 | 4,821,870 | 14.8% | 20 Aug, 2026 |
| 4 | Valerie Barnett | Chief Legal Officer | 150,012 | 0 | 150,012 | 0.5% | 20 May, 2026 |
| 5 | William D. Mccombe | Chief Financial Officer | 134,693 | 0 | 134,693 | 0.4% | 20 Aug, 2026 |
| 6 | Patrik Jeanmonod | Chief Financial Officer | 97,465 | 0 | 97,465 | 0.3% | 13 Mar, 2024 |
| 7 | Jack Ball | Director | 86,678 | 0 | 86,678 | 0.3% | 12 Jun, 2026 |
| 8 | Michael Holder | Director | 62,875 | 0 | 62,875 | 0.2% | 20 Aug, 2026 |
| 9 | Allen Poirson | Svp Bus. And Corp. Dev. | 59,981 | 0 | 59,981 | 0.2% | 20 Nov, 2024 |
| 10 | Deborah J Neff | Director | 59,679 | 0 | 59,679 | 0.2% | 12 Jun, 2026 |
| 11 | Vera Imper | Director | 59,679 | 0 | 59,679 | 0.2% | 12 Jun, 2026 |
| 12 | Philippe Busque | Svp, Global Sales And Services | 43,466 | 0 | 43,466 | 0.1% | 20 May, 2026 |
| 13 | Richard Chin | Director | 28,499 | 0 | 28,499 | 0.1% | 20 Aug, 2026 |
| 14 | Paul Christopher Williams | Chief Operating Officer | 16,473 | 0 | 16,473 | 0.1% | 21 Aug, 2024 |
| 15 | Don M Hardison | Director | 15,706 | 0 | 15,706 | 0.0% | 09 Jun, 2025 |
| 16 | Jonathan Todd Garland | Chief Commercial Officer | 8,763 | 0 | 8,763 | 0.0% | 21 Aug, 2023 |
| 17 | Glenn P Muir | Director | 3,086 | 0 | 3,086 | 0.0% | 20 Aug, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 18 Aug, 2026 | Glenn P Muir | Director | Acquired M | 3,086 | — | — | 3,086 | Direct |
| 18 Aug, 2026 | Wenbin Jiang | President And Ceo | Acquired M | 11,781 | — | — | 5,488,984 | Direct |
| 18 Aug, 2026 | William D. Mccombe | Chief Financial Officer | Acquired M | 6,320 | — | — | 117,497 | Direct |
| 18 Aug, 2026 | Michael Holder | Director | Acquired M | 2,181 | — | — | 62,875 | Direct |
| 18 Aug, 2026 | Richard Chin | Director | Acquired M | 6,107 | — | — | 28,499 | Direct |
| 18 Aug, 2026 | Ming Yan | Chief Technology Officer | Acquired M | 7,363 | — | — | 4,804,051 | Direct |
| 18 Aug, 2026 | Ming Yan | Chief Technology Officer | Disposed F | 1,778 | $4.67 | $8.30K | 4,802,273 | Direct |
| 18 Aug, 2026 | Wenbin Jiang | President And Ceo | Disposed F | 2,869 | $4.67 | $13.40K | 5,486,115 | Direct |
| 18 Aug, 2026 | Richard Chin | Director | Disposed M | 6,107 | $0.00 | $0 | 44,790 | Direct |
| 18 Aug, 2026 | Michael Holder | Director | Disposed M | 2,181 | $0.00 | $0 | 7,276 | Direct |
| 18 Aug, 2026 | William D. Mccombe | Chief Financial Officer | Disposed F | 2,111 | $4.67 | $9.86K | 115,386 | Direct |
| 18 Aug, 2026 | Glenn P Muir | Director | Disposed M | 3,086 | $0.00 | $0 | 52,469 | Direct |
| 18 Aug, 2026 | Ming Yan | Chief Technology Officer | Acquired M | 5,525 | — | — | 4,807,798 | Direct |
| 18 Aug, 2026 | Wenbin Jiang | President And Ceo | Acquired M | 22,100 | — | — | 5,508,215 | Direct |
| 18 Aug, 2026 | William D. Mccombe | Chief Financial Officer | Acquired M | 13,051 | — | — | 128,437 | Direct |
| 18 Aug, 2026 | Wenbin Jiang | President And Ceo | Disposed F | 5,382 | $4.67 | $25.13K | 5,502,833 | Direct |
| 18 Aug, 2026 | Ming Yan | Chief Technology Officer | Disposed F | 1,346 | $4.67 | $6.29K | 4,806,452 | Direct |
| 18 Aug, 2026 | William D. Mccombe | Chief Financial Officer | Disposed F | 4,392 | $4.67 | $20.51K | 124,045 | Direct |
| 18 Aug, 2026 | William D. Mccombe | Chief Financial Officer | Acquired M | 16,049 | — | — | 140,094 | Direct |
| 18 Aug, 2026 | Ming Yan | Chief Technology Officer | Acquired M | 6,162 | — | — | 4,812,614 | Direct |