As of March 23, 2026, the three largest insider holders of CBLL are Bakker Juliet Tammenoms (Director, 2.48Mn shares), Josef Parvizi (Director, 813.82K shares), Josef Parvizi (Director, 722.65K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Bakker Juliet Tammenoms | 0 | 2,475,110 | 16 Oct, 2024 | |
| Josef Parvizi | 813,824 | 0 | 16 Oct, 2024 | |
| Josef Parvizi | 0 | 722,652 | 23 Feb, 2026 | |
| Xingjuan Chao | President And Ceo | 711,164 | 0 | 05 Mar, 2026 |
| Raymond Woo | Chief Technology Officer | 166,912 | 0 | 04 Mar, 2026 |
| Scott Blumberg | Chief Financial Officer | 118,334 | 0 | 25 Feb, 2026 |
| Joseph Michael Taylor | 59,235 | 0 | 21 Aug, 2025 | |
| Joseph S. Manni | Chief Revenue Officer | 26,933 | 0 | 25 Feb, 2026 |
| Erica J. Rogers | 25,216 | 0 | 19 Sep, 2025 | |
| Rebecca B Robertson | 18,749 | 0 | 05 Mar, 2026 | |
| David Foehr | Senior Vp, Finance And Pao | 17,550 | 0 | 05 Mar, 2026 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 03 Mar, 2026 | Xingjuan Chao | Common Stock | D | 14,000 | $17.45 | 711,164 | D | S |
| 03 Mar, 2026 | Rebecca B Robertson | Common Stock | D | 827 | $17.80 | 18,749 | D | S |
| 03 Mar, 2026 | David Foehr | Common Stock | A | 3,403 | $4.70 | 20,953 | D | M |
| 03 Mar, 2026 | Xingjuan Chao | Common Stock | A | 1,446 | $4.70 | 712,610 | D | M |
| 03 Mar, 2026 | David Foehr | Common Stock | D | 3,403 | $17.80 | 17,550 | D | S |
| 03 Mar, 2026 | David Foehr | Common Stock | A | 1,157 | $4.70 | 18,707 | D | M |
| 03 Mar, 2026 | Xingjuan Chao | Common Stock | D | 1,446 | $17.46 | 711,164 | D | S |
| 03 Mar, 2026 | David Foehr | Common Stock | D | 1,157 | $17.80 | 17,550 | D | S |
| 03 Mar, 2026 | Xingjuan Chao | Common Stock | A | 23,554 | $4.70 | 734,718 | D | M |
| 03 Mar, 2026 | David Foehr | Stock Option (Right to Buy) | D | 3,403 | $0.00 | 54,042 | D | M |
| 03 Mar, 2026 | Xingjuan Chao | Common Stock | D | 23,554 | $17.45 | 711,164 | D | S |
| 03 Mar, 2026 | David Foehr | Stock Option (Right to Buy) | D | 1,157 | $0.00 | 52,885 | D | M |
| 03 Mar, 2026 | Xingjuan Chao | Stock Option (Right to Buy) | D | 1,446 | $0.00 | 294,494 | D | M |
| 03 Mar, 2026 | Xingjuan Chao | Stock Option (Right to Buy) | D | 23,554 | $0.00 | 172,139 | D | M |
| 02 Mar, 2026 | Raymond Woo | Common Stock | A | 1,472 | $2.24 | 168,384 | D | M |
| 02 Mar, 2026 | Raymond Woo | Common Stock | D | 1,472 | $18.26 | 166,912 | D | S |
| 02 Mar, 2026 | Raymond Woo | Common Stock | A | 3,025 | $4.70 | 169,937 | D | M |
| 02 Mar, 2026 | Raymond Woo | Common Stock | A | 3,025 | $18.26 | 166,912 | D | S |
| 02 Mar, 2026 | Raymond Woo | Common Stock | A | 6,615 | $4.70 | 173,527 | D | M |
| 02 Mar, 2026 | Raymond Woo | Common Stock | D | 6,615 | $18.25 | 166,912 | D | S |