Data spanning the past 90 days through January 09, 2026 reveals that Centessa Pharmaceuticals's three principal insider shareholders consist of TenPercentOwner (Bermuda) Ltd Gap (9.68Mn shares), Chief Innovation Officer David J Grainger (990.29K shares), Evp & Chairman Of Development Antoine Yver (783.07K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| (Bermuda) Ltd Gap | 9,681,818 | 03 Jun, 2021 | |
| David J Grainger | Chief Innovation Officer | 990,290 | 02 Jan, 2024 |
| Antoine Yver | Evp & Chairman Of Development | 783,066 | 02 Jun, 2023 |
| Arjun Goyal | 462,585 | 19 May, 2025 | |
| Ventures Management (Jersey) Ltd Medicxi | 281,162 | 23 Mar, 2022 | |
| Rubertis Francesco De | 281,162 | 23 Mar, 2022 | |
| Saurabh Saha | Chief Executive Officer | 259,017 | 21 Jul, 2025 |
| David M Chao | Chief Administrative Officer | 225,007 | 19 Mar, 2025 |
| Thomas Templeman | Chief Technology Officer | 188,244 | 04 Apr, 2023 |
| Mario Alberto Accardi | President And Orexin Program | 178,801 | 09 Dec, 2025 |
| Javad Shahidi | Chief Medical Officer | 158,932 | 04 Oct, 2022 |
| Gregory M Weinhoff | Chief Business Officer | 122,279 | 25 Jul, 2025 |
| Tia L Bush | Chief Technology & Quality Ofc | 121,503 | 18 Nov, 2025 |
| Iqbal J Hussain | General Counsel | 110,886 | 18 Nov, 2025 |
| Harris Rotman | Svp Regulatory Affairs | 62,625 | 02 Feb, 2024 |
| Aaron Kantoff | 60,000 | 18 Nov, 2021 | |
| Karen M. Anderson | Chief People Officer | 54,322 | 10 Feb, 2025 |
| Marella Thorell | Chief Accounting Officer | 53,101 | 23 Mar, 2022 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 09 Dec, 2025 | Mario Alberto Accardi | Ordinary Shares | D | 2,568 | $29.21 | 178,801 | D | S |
| 09 Dec, 2025 | Mario Alberto Accardi | Ordinary Shares | D | 7,432 | $28.70 | 181,369 | D | S |
| 08 Dec, 2025 | Mario Alberto Accardi | Ordinary Shares | D | 10,000 | $30.00 | 188,801 | D | S |
| 08 Dec, 2025 | Mario Alberto Accardi | Ordinary Shares | A | 5,000 | $9.53 | 198,801 | D | M |
| 17 Nov, 2025 | Iqbal J Hussain | Ordinary Shares | D | 6,000 | $27.64 | 105,386 | D | S |
| 17 Nov, 2025 | Iqbal J Hussain | Ordinary Shares | A | 6,000 | $5.84 | 111,386 | D | M |
| 17 Nov, 2025 | Tia L Bush | Ordinary Shares | A | 40,000 | $9.42 | 161,503 | D | M |
| 17 Nov, 2025 | Tia L Bush | Ordinary Shares | D | 40,000 | $28.00 | 121,503 | D | S |
| 12 Nov, 2025 | Tia L Bush | Ordinary Shares | A | 40,000 | $9.42 | 161,503 | D | M |
| 12 Nov, 2025 | Tia L Bush | Ordinary Shares | D | 40,000 | $26.00 | 121,503 | D | S |
| 01 Nov, 2025 | Mario Alberto Accardi | Ordinary Shares | D | 593 | $24.90 | 193,801 | D | F |
| 27 Oct, 2025 | Mario Alberto Accardi | Ordinary Shares | D | 8,000 | $25.00 | 194,394 | D | S |
| 27 Oct, 2025 | Mario Alberto Accardi | Ordinary Shares | A | 5,000 | $8.01 | 202,394 | D | M |
| 15 Oct, 2025 | Iqbal J Hussain | Ordinary Shares | A | 6,000 | $5.84 | 111,386 | D | M |
| 15 Oct, 2025 | Iqbal J Hussain | Ordinary Shares | D | 6,000 | $22.41 | 105,386 | D | S |
| 24 Sep, 2025 | Tia L Bush | Ordinary Shares | A | 35,000 | $9.42 | 156,503 | D | M |
| 24 Sep, 2025 | Tia L Bush | Ordinary Shares | D | 35,000 | $24.00 | 121,503 | D | S |
| 16 Sep, 2025 | Mario Alberto Accardi | Ordinary Shares | D | 742 | $22.02 | 197,394 | D | S |
| 16 Sep, 2025 | Mario Alberto Accardi | Ordinary Shares | D | 7,430 | $21.33 | 198,136 | D | S |
| 15 Sep, 2025 | Iqbal J Hussain | Ordinary Shares | A | 6,000 | $5.84 | 111,386 | D | M |