Centessa Pharmaceuticals plc
Total Trades
114
Buys
4
Sells
74
Largest Trade
N/A
Insiders
13
Institutional Funds
97
Inst. Value
$1M+
Activist Filings
16
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Weinhoff Gregory M | Chief Business Off… | EXERCISE | $15K–$50K | 10K | $3.85 | Mar 26, 2025 |
| Weinhoff Gregory M | Chief Business Off… | SELL | $100K–$500K | 10K | $16.34 | Mar 26, 2025 |
| SAHA SAURABH | CEO | SELL | $500K+ | 55K | $16.69 | Mar 21, 2025 |
| CHAO DAVID M | Chief Administrati… | SELL | $100K–$500K | 7K | $17.17 | Mar 19, 2025 |
| CHAO DAVID M | Chief Administrati… | EXERCISE | $1K–$15K | 4K | $3.85 | Mar 19, 2025 |
| HUSSAIN IQBAL J | General Counsel | SELL | $50K–$100K | 6K | $16.45 | Mar 19, 2025 |
| HUSSAIN IQBAL J | General Counsel | EXERCISE | $15K–$50K | 6K | $5.84 | Mar 19, 2025 |
| Weinhoff Gregory M | Chief Business Off… | SELL | $100K–$500K | 11K | $15.25 | Feb 26, 2025 |
| SAHA SAURABH | CEO | SELL | $500K+ | 55K | $15.93 | Feb 20, 2025 |
| Weinhoff Gregory M | Chief Business Off… | SELL | $100K–$500K | 12K | $16.47 | Jan 28, 2025 |
| SAHA SAURABH | CEO | SELL | $500K+ | 55K | $15.77 | Jan 22, 2025 |
| HUSSAIN IQBAL J | General Counsel | SELL | $50K–$100K | 6K | $15.29 | Jan 17, 2025 |
| HUSSAIN IQBAL J | General Counsel | EXERCISE | $15K–$50K | 6K | $5.84 | Jan 17, 2025 |
| Weinhoff Gregory M | Chief Business Off… | SELL | $100K–$500K | 10K | $17.04 | Dec 26, 2024 |
| Weinhoff Gregory M | Chief Business Off… | EXERCISE | $15K–$50K | 10K | $3.85 | Dec 26, 2024 |
| SAHA SAURABH | CEO | SELL | $500K+ | 55K | $17.44 | Dec 20, 2024 |
| SAHA SAURABH | CEO | SELL | $1K–$15K | 299 | $18.23 | Nov 27, 2024 |
| SAHA SAURABH | CEO | EXERCISE | $1K–$15K | 299 | $5.84 | Nov 27, 2024 |
| Weinhoff Gregory M | Chief Business Off… | SELL | $100K–$500K | 10K | $17.66 | Nov 27, 2024 |
| Weinhoff Gregory M | Chief Business Off… | EXERCISE | $15K–$50K | 10K | $3.85 | Nov 27, 2024 |
| SAHA SAURABH | CEO | EXERCISE | $15K–$50K | 5K | $5.84 | Nov 22, 2024 |
| SAHA SAURABH | CEO | SELL | $1M+ | 60K | $17.00 | Nov 22, 2024 |
| SAHA SAURABH | CEO | EXERCISE | $100K–$500K | 32K | $5.84 | Nov 15, 2024 |
| SAHA SAURABH | CEO | SELL | $500K+ | 32K | $18.28 | Nov 15, 2024 |
| Weinhoff Gregory M | Chief Business Off… | SELL | $100K–$500K | 12K | $15.38 | Oct 25, 2024 |
| SAHA SAURABH | CEO | SELL | $500K+ | 55K | $15.70 | Oct 23, 2024 |
| Weinhoff Gregory M | Chief Business Off… | SELL | $100K–$500K | 17K | $15.69 | Sep 27, 2024 |
| SAHA SAURABH | CEO | SELL | $500K+ | 47K | $12.30 | Aug 23, 2024 |
| Weinhoff Gregory M | Chief Business Off… | SELL | $100K–$500K | 30K | $12.24 | Aug 23, 2024 |
| SAHA SAURABH | CEO | SELL | $100K–$500K | 8K | $12.28 | Aug 22, 2024 |
| Anderson Karen M. | Chief People Officer | SELL | $500K+ | 51K | $11.88 | Mar 26, 2024 |
| Anderson Karen M. | Chief People Officer | EXERCISE | $100K–$500K | 45K | $3.94 | Mar 26, 2024 |
| Rotman Harris | SVP Regulatory Aff… | SELL | $15K–$50K | 4K | $8.10 | Feb 2, 2024 |
| Rotman Harris | SVP Regulatory Aff… | GRANT | N/A | 38K | — | Feb 2, 2024 |
| Rotman Harris | SVP Regulatory Aff… | SELL | $100K–$500K | 37K | $6.29 | Sep 22, 2023 |
| Rotman Harris | SVP Regulatory Aff… | EXERCISE | $100K–$500K | 37K | $4.37 | Sep 22, 2023 |
| YVER ANTOINE | EVP & Chairman of … | SELL | $15K–$50K | 7K | $4.45 | Jun 2, 2023 |
| Bush Tia L | Chief Quality Offi… | SELL | $15K–$50K | 8K | $4.48 | May 26, 2023 |
| YVER ANTOINE | EVP & Chairman of … | SELL | $15K–$50K | 7K | $4.42 | May 2, 2023 |
| YVER ANTOINE | EVP & Chairman of … | SELL | $15K–$50K | 7K | $3.69 | Apr 4, 2023 |
| YVER ANTOINE | EVP & Chairman of … | SELL | $15K–$50K | 7K | $3.42 | Mar 3, 2023 |
| YVER ANTOINE | EVP & Chairman of … | SELL | $15K–$50K | 8K | $3.79 | Feb 3, 2023 |
| YVER ANTOINE | EVP & Chairman of … | GRANT | N/A | 77K | — | Feb 3, 2023 |
| YVER ANTOINE | EVP & Chairman of … | SELL | $15K–$50K | 7K | $3.18 | Jan 5, 2023 |
| YVER ANTOINE | EVP & Chairman of … | SELL | $15K–$50K | 9K | $3.91 | Dec 5, 2022 |
| YVER ANTOINE | EVP & Chairman of … | SELL | $15K–$50K | 10K | $4.03 | Nov 3, 2022 |
| CHAO DAVID M | Chief Administrati… | SELL | $15K–$50K | 8K | $4.00 | Oct 4, 2022 |
| Templeman Thomas | CTO | SELL | $15K–$50K | 4K | $4.00 | Oct 4, 2022 |
| GRAINGER DAVID J | Chief Innovation O… | SELL | $15K–$50K | 5K | $4.00 | Oct 4, 2022 |
| Weinhoff Gregory M | CFO | SELL | $15K–$50K | 9K | $4.00 | Oct 4, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 97 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Medicxi Ventures Management (Jersey) Ltd | 20.0M | $1M+ | SH |
| Index Venture Life Associates VI Ltd | 10.0M | $1M+ | SH |
| Siren, L.L.C. | 4.0M | $1M+ | SH |
| PERCEPTIVE ADVISORS LLC | 2.9M | $1M+ | SH |
| FEDERATED HERMES, INC. | 2.3M | $1M+ | SH |
| First Light Asset Management, LLC | 2.3M | $1M+ | SH |
| BRAIDWELL LP | 2.2M | $1M+ | SH |
| Deep Track Capital, LP | 2.0M | $1M+ | SH |
| MAVERICK CAPITAL LTD | 1.6M | $1M+ | SH |
| Cormorant Asset Management, LP | 1.3M | $1M+ | SH |
| Capital World Investors | 1.2M | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 1.1M | $1M+ | SH |
| Sofinnova Investments, Inc. | 1.1M | $1M+ | SH |
| Jain Global LLC | 916K | $1M+ | SH |
| GOLDMAN SACHS GROUP INC | 779K | $1M+ | SH |
| Octagon Capital Advisors LP | 750K | $1M+ | SH |
| Affinity Asset Advisors, LLC | 601K | $1M+ | SH |
| PFM Health Sciences, LP | 592K | $1M+ | SH |
| 5AM Venture Management, LLC | 581K | $1M+ | SH |
| BlackRock, Inc. | 528K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 6, 2026
12.2%
11.0M shares
SC 13G/A · Feb 5, 2026
9.9%
8.9M shares
General Atlantic Cooperatief U.A.
SC 13D/A · Nov 28, 2025
5.0%
7.4M shares
General Atlantic Cooperatief U.A.
SC 13D/A · Nov 18, 2025
6.6%
9.7M shares
SC 13G · Nov 14, 2025
8.1%
10.8M shares
Adage Capital Management, L.P.
SC 13G/A · Nov 13, 2025
7.5%
10.0M shares
SC 13G · Nov 5, 2025
7.0%
6.3M shares
Adage Capital Management, L.P.
SC 13G/A · Aug 12, 2025
6.3%
8.4M shares
Adage Capital Management, L.P.
SC 13G · May 12, 2025
5.2%
7.0M shares
SC 13G/A · Nov 14, 2024
2.9%
3.2M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Nov 14, 2024
0.0%
0 shares
SC 13G/A · Feb 14, 2024
5.8%
5.6M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Feb 14, 2024
4.7%
4.6M shares
SC 13G · Nov 23, 2022
5.5%
5.2M shares
Biotechnology Value Fund, L.P.
SC 13G · Jun 16, 2022
4.0%
3.7M shares
Janus Henderson Group plc EIN #00-0000000
SC 13G · Feb 11, 2022
6.4%
5.7M shares