CBLL's three largest insider shareholders as of September 29, 2026 are Gp A, Llc Tpg (Other, 3.77Mn shares), Bakker Juliet Tammenoms (Director, 2.48Mn shares), Xingjuan Chao (President And Ceo, 746.35K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Gp A, Llc Tpg | Other | 0 | 3,765,054 | 3,765,054 | 73.0% | 30 Jun, 2026 |
| 2 | Xingjuan Chao | President And Ceo | 746,345 | 0 | 746,345 | 14.5% | 17 Sep, 2026 |
| 3 | Raymond Woo | Chief Technology Officer | 203,118 | 0 | 203,118 | 3.9% | 10 Sep, 2026 |
| 4 | Scott Blumberg | Chief Financial Officer | 146,600 | 0 | 146,600 | 2.8% | 17 Sep, 2026 |
| 5 | Joseph S. Manni | Chief Revenue Officer | 55,956 | 0 | 55,956 | 1.1% | 25 Aug, 2026 |
| 6 | Joseph Michael Taylor | Director | 48,478 | 0 | 48,478 | 0.9% | 14 Aug, 2026 |
| 7 | David Foehr | Senior Vp, Finance And Pao | 34,144 | 0 | 34,144 | 0.7% | 10 Sep, 2026 |
| 8 | Erica J. Rogers | Director | 33,054 | 0 | 33,054 | 0.6% | 04 Jun, 2026 |
| 9 | Rebecca B Robertson | Director | 26,587 | 0 | 26,587 | 0.5% | 04 Jun, 2026 |
| 10 | Bakker Juliet Tammenoms | Director | 23,284 | 0 | 23,284 | 0.5% | 04 Jun, 2026 |
| 11 | Josef Parvizi | Director | 23,284 | 0 | 23,284 | 0.5% | 04 Jun, 2026 |
| 12 | William W Burke | Director | 23,022 | 0 | 23,022 | 0.4% | 02 Jul, 2026 |
| 13 | Sharon O'Keefe | Director | 16,011 | 0 | 16,011 | 0.3% | 30 Jul, 2026 |
| 14 | Thomas A. West | Director | 16,011 | 0 | 16,011 | 0.3% | 30 Jul, 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 |
|---|---|---|---|---|---|---|---|---|
| 15 Sep, 2026 | Scott Blumberg | Chief Financial Officer | Acquired M | 846 | $9.41 | $7.96K | 147,446 | Direct |
| 15 Sep, 2026 | Xingjuan Chao | President And Ceo | Disposed S | 20,846 | $25.03 | $521.78K | 746,345 | Direct |
| 15 Sep, 2026 | Scott Blumberg | Chief Financial Officer | Disposed S | 846 | $25.00 | $21.15K | 146,600 | Direct |
| 15 Sep, 2026 | Scott Blumberg | Chief Financial Officer | Disposed M | 846 | $0.00 | $0 | 51,802 | Direct |
| 08 Sep, 2026 | David Foehr | Senior Vp, Finance And Pao | Disposed S | 1,755 | $24.26 | $42.58K | 34,144 | Direct |
| 08 Sep, 2026 | Raymond Woo | Chief Technology Officer | Acquired M | 8,389 | $2.24 | $18.79K | 203,118 | Direct |
| 08 Sep, 2026 | Raymond Woo | Chief Technology Officer | Acquired M | 4,864 | $3.65 | $17.75K | 207,982 | Direct |
| 08 Sep, 2026 | David Foehr | Senior Vp, Finance And Pao | Acquired M | 7,500 | $4.70 | $35.25K | 41,644 | Direct |
| 08 Sep, 2026 | Raymond Woo | Chief Technology Officer | Acquired M | 23 | $4.70 | $108 | 208,005 | Direct |
| 08 Sep, 2026 | David Foehr | Senior Vp, Finance And Pao | Disposed S | 7,500 | $24.25 | $181.88K | 34,144 | Direct |
| 08 Sep, 2026 | Raymond Woo | Chief Technology Officer | Disposed S | 4,887 | $24.33 | $118.90K | 203,118 | Direct |
| 08 Sep, 2026 | David Foehr | Senior Vp, Finance And Pao | Disposed M | 7,500 | $0.00 | $0 | 45,385 | Direct |
| 08 Sep, 2026 | Raymond Woo | Chief Technology Officer | Disposed M | 8,389 | $0.00 | $0 | 0 | Direct |
| 08 Sep, 2026 | Raymond Woo | Chief Technology Officer | Disposed M | 4,864 | $0.00 | $0 | 53,501 | Direct |
| 08 Sep, 2026 | Raymond Woo | Chief Technology Officer | Disposed M | 23 | $0.00 | $0 | 19,044 | Direct |
| 02 Sep, 2026 | Xingjuan Chao | President And Ceo | Acquired M | 1,446 | $4.70 | $6.80K | 783,177 | Direct |
| 02 Sep, 2026 | Scott Blumberg | Chief Financial Officer | Acquired M | 652 | $9.41 | $6.14K | 147,252 | Direct |
| 02 Sep, 2026 | Xingjuan Chao | President And Ceo | Acquired M | 23,554 | $4.70 | $110.70K | 806,731 | Direct |
| 02 Sep, 2026 | Scott Blumberg | Chief Financial Officer | Disposed S | 652 | $25.00 | $16.30K | 146,600 | Direct |
| 02 Sep, 2026 | Xingjuan Chao | President And Ceo | Disposed S | 39,540 | $24.61 | $973.08K | 767,191 | Direct |