CBIO's three largest insider shareholders as of May 30, 2026 are Public Equities, L.P. Invus (TenPercentOwner, 6.32Mn shares), Scott D Sandell (TenPercentOwner, 4.97Mn shares), Funds Management Llc Fairmount (Director, 2.75Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Partners L P/Il Bvf | - | 62,383 | 0 | 17 Jun, 2025 |
| Daniel M Junius | - | 98,459 | 0 | 01 Apr, 2024 |
| Scott D Sandell | - | 0 | 4,967,530 | 27 Jan, 2023 |
| Public Equities, L.P. Invus | - | 6,317,565 | 0 | 09 Aug, 2024 |
| Patricia S Andrews | - | 58,608 | 0 | 02 Jan, 2024 |
| Timothy R Pearson | - | 24,650 | 0 | 14 Nov, 2022 |
| Joshua T Brumm | Chief Executive Officer | 323,517 | 0 | 17 Dec, 2025 |
| Mark Alan Goldberg | - | 24,828 | 0 | 01 Apr, 2024 |
| Scott Koenig | - | 36,750 | 0 | 02 Jun, 2023 |
| Brian M. Hahn | Svp Finance, Cfo | 70,643 | 0 | 20 Jun, 2024 |
| Rachel K. King | - | 511,860 | 0 | 02 Jan, 2024 |
| John L. Magnani | Svp Of Research, Cso | 366,078 | 0 | 14 Nov, 2022 |
| Ryan Lynch | - | 12,378 | 0 | 17 Dec, 2025 |
| Armand Girard | Svp, Chief Business Officer | 29,161 | 0 | 14 Nov, 2022 |
| Richard William Scalzo | Chief Financial Officer | 19,422 | 0 | 17 Dec, 2025 |
| Funds Management Llc Fairmount | - | 0 | 2,747,866 | 08 Dec, 2025 |
| Harout Semerjian | Chief Executive Officer | 25,000 | 0 | 14 Nov, 2022 |
| Jonathan Mcneill | President And Coo | 159,707 | 0 | 17 Dec, 2025 |
| Edwin Rock | Chief Medical Officer | 680,403 | 0 | 24 Jun, 2024 |
| Bruce S Johnson | Svp Chief Commercial Officer | 138,980 | 0 | 09 May, 2023 |
| Christopher Grant Doughty | Chief Business Officer | 62,194 | 0 | 17 Dec, 2025 |
| Ellie Eunkyung Im | Chief Medical Officer | 21,298 | 0 | 17 Dec, 2025 |
| Barbara Harlin Bispham | - | 18,422 | 0 | 17 Dec, 2025 |
| Jan Pinkas | Chief Scientific Officer | 22,507 | 0 | 17 Dec, 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 |
|---|---|---|---|---|---|---|---|---|
| 15 Dec, 2025 | Jan Pinkas | Ordinary Shares | A | 17,507 | - | 17,507 | D | A |
| 15 Dec, 2025 | Ryan Lynch | Ordinary Shares | A | 8,378 | - | 8,378 | D | A |
| 15 Dec, 2025 | Joshua T Brumm | Ordinary Shares | A | 45,117 | - | 313,517 | D | A |
| 15 Dec, 2025 | Richard William Scalzo | Ordinary Shares | A | 14,422 | - | 14,422 | D | A |
| 15 Dec, 2025 | Christopher Grant Doughty | Ordinary Shares | A | 14,714 | - | 54,194 | D | A |
| 15 Dec, 2025 | Ellie Eunkyung Im | Ordinary Shares | A | 16,298 | - | 16,298 | D | A |
| 15 Dec, 2025 | Christopher Grant Doughty | Ordinary Shares | A | 14,714 | - | 54,194 | D | A |
| 15 Dec, 2025 | Jonathan Mcneill | Ordinary Shares | A | 19,507 | - | 153,707 | D | A |
| 15 Dec, 2025 | Jan Pinkas | Ordinary Shares | A | 17,507 | - | 17,507 | D | A |
| 15 Dec, 2025 | Ellie Eunkyung Im | Ordinary Shares | A | 16,298 | - | 16,298 | D | A |
| 15 Dec, 2025 | Ryan Lynch | Ordinary Shares | A | 8,378 | - | 8,378 | D | A |
| 15 Dec, 2025 | Richard William Scalzo | Ordinary Shares | A | 14,422 | - | 14,422 | D | A |
| 15 Dec, 2025 | Barbara Harlin Bispham | Ordinary Shares | A | 12,422 | - | 12,422 | D | A |
| 15 Dec, 2025 | Jonathan Mcneill | Ordinary Shares | A | 19,507 | - | 153,707 | D | A |
| 15 Dec, 2025 | Ryan Lynch | Ordinary Shares | A | 4,000 | - | 12,378 | D | A |
| 15 Dec, 2025 | Jan Pinkas | Ordinary Shares | A | 5,000 | - | 22,507 | D | A |
| 15 Dec, 2025 | Jonathan Mcneill | Ordinary Shares | A | 6,000 | - | 159,707 | D | A |
| 15 Dec, 2025 | Christopher Grant Doughty | Ordinary Shares | A | 8,000 | - | 62,194 | D | A |
| 15 Dec, 2025 | Ellie Eunkyung Im | Ordinary Shares | A | 5,000 | - | 21,298 | D | A |
| 15 Dec, 2025 | Ryan Lynch | Ordinary Shares | A | 4,000 | - | 12,378 | D | A |