As of April 22, 2026, the three largest insider holders of CBLL are Gp A, Llc Tpg (TenPercentOwner, 3.97Mn shares), Bakker Juliet Tammenoms (Director, 2.48Mn shares), Xingjuan Chao (President And Ceo, 864.35K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Gp A, Llc Tpg | - | 0 | 3,967,422 | 17 Oct, 2024 |
| Bakker Juliet Tammenoms | - | 0 | 2,475,110 | 16 Oct, 2024 |
| Xingjuan Chao | President And Ceo | 864,347 | 0 | 03 Apr, 2026 |
| Xingjuan Chao | President And Ceo | 850,347 | 0 | 08 Apr, 2026 |
| Josef Parvizi | - | 813,824 | 0 | 16 Oct, 2024 |
| Josef Parvizi | - | 813,824 | 0 | 16 Oct, 2024 |
| Josef Parvizi | - | 0 | 722,652 | 23 Feb, 2026 |
| Josef Parvizi | - | 0 | 722,652 | 23 Feb, 2026 |
| Raymond Woo | Chief Technology Officer | 197,648 | 0 | 03 Apr, 2026 |
| Raymond Woo | Chief Technology Officer | 197,648 | 0 | 03 Apr, 2026 |
| Scott Blumberg | Chief Financial Officer | 149,070 | 0 | 03 Apr, 2026 |
| Joseph Michael Taylor | - | 59,235 | 0 | 21 Aug, 2025 |
| Joseph Michael Taylor | - | 59,235 | 0 | 21 Aug, 2025 |
| Joseph S. Manni | Chief Revenue Officer | 57,669 | 0 | 03 Apr, 2026 |
| Joseph S. Manni | Chief Revenue Officer | 57,669 | 0 | 03 Apr, 2026 |
| David Foehr | Senior Vp, Finance And Pao | 39,600 | 0 | 03 Apr, 2026 |
| David Foehr | Senior Vp, Finance And Pao | 39,600 | 0 | 03 Apr, 2026 |
| Erica J. Rogers | - | 25,216 | 0 | 19 Sep, 2025 |
| Rebecca B Robertson | - | 18,749 | 0 | 05 Mar, 2026 |
| William W Burke | - | 17,391 | 0 | 11 Dec, 2025 |
| Bakker Juliet Tammenoms | - | 15,446 | 0 | 17 Jun, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 06 Apr, 2026 | Xingjuan Chao | Common Stock | D | 14,000 | $18.40 | 850,347 | D | S |
| 06 Apr, 2026 | Xingjuan Chao | Common Stock | A | 1,446 | $4.70 | 851,793 | D | M |
| 06 Apr, 2026 | Xingjuan Chao | Common Stock | D | 1,446 | $18.40 | 850,347 | D | S |
| 06 Apr, 2026 | Xingjuan Chao | Common Stock | A | 23,554 | $4.70 | 873,901 | D | M |
| 06 Apr, 2026 | Xingjuan Chao | Common Stock | D | 23,554 | $18.40 | 850,347 | D | S |
| 06 Apr, 2026 | Xingjuan Chao | Stock Option (Right to Buy) | D | 1,446 | $0.00 | 293,048 | D | M |
| 06 Apr, 2026 | Xingjuan Chao | Stock Option (Right to Buy) | D | 23,554 | $0.00 | 148,585 | D | M |
| 01 Apr, 2026 | Xingjuan Chao | Common Stock | A | 97,555 | $0.00 | 864,347 | D | A |
| 01 Apr, 2026 | Scott Blumberg | Common Stock | A | 30,736 | $0.00 | 149,070 | D | A |
| 01 Apr, 2026 | Joseph S. Manni | Common Stock | A | 30,736 | $0.00 | 57,669 | D | A |
| 01 Apr, 2026 | David Foehr | Common Stock | A | 22,050 | $0.00 | 39,600 | D | A |
| 01 Apr, 2026 | Raymond Woo | Common Stock | A | 1,472 | $2.24 | 168,384 | D | M |
| 01 Apr, 2026 | David Foehr | Stock Option (Right to Buy) | A | 36,750 | $0.00 | 36,750 | D | A |
| 01 Apr, 2026 | Raymond Woo | Common Stock | D | 1,472 | $18.58 | 166,912 | D | S |
| 01 Apr, 2026 | Joseph S. Manni | Stock Option (Right to Buy) | A | 51,227 | $0.00 | 51,227 | D | A |
| 01 Apr, 2026 | Scott Blumberg | Stock Option (Right to Buy) | A | 51,227 | $0.00 | 51,227 | D | A |
| 01 Apr, 2026 | Raymond Woo | Common Stock | A | 3,025 | $4.70 | 169,937 | D | M |
| 01 Apr, 2026 | Xingjuan Chao | Stock Option (Right to Buy) | A | 162,592 | $0.00 | 162,592 | D | A |
| 01 Apr, 2026 | Raymond Woo | Common Stock | D | 3,025 | $18.53 | 166,912 | D | S |
| 01 Apr, 2026 | Raymond Woo | Common Stock | A | 6,615 | $4.70 | 173,527 | D | M |