People
- Current affiliation
- SOSV · General Partner
- Investment range
- $100K – $2M
- Sweet spot
- $1M
- Investments on record
- 138
Investments
| $—2026-06 | Bactery | Stephen Chambers |
| $—2026-05 | Harmony Baby Nutrition | Stephen Chambers |
| $—2026-05 | Vine Medical | Stephen Chambers |
| $—2026-04 | CellCodex | Stephen Chambers |
| $10M2026-03 | heXem bio | Stephen Chambers |
| $—2026-02 | AvantGuard | Stephen Chambers |
| $1M2026-01 | FluoSphera | Stephen Chambers |
| $5M2025-12 | Cayuga Biotech | Stephen Chambers |
| $—2025-12 | Foundational Bio | Stephen Chambers |
| $—2025-11 | Klona Biotech | Stephen Chambers |
| $—2025-11 | ArgenTag | Stephen Chambers |
| $2M2025-10 | iOrganBio | Stephen Chambers |
| $4M2025-10 | Helex | Stephen Chambers |
| $—2025-09 | Janus | Stephen Chambers |
| $—2025-09 | Primary Bioscience | Stephen Chambers |
| $—2025-09 | Sable Therapeutics | Stephen Chambers |
| $—2025-08 | Anomer Bio | Stephen Chambers |
| $—2025-08 | Circadian | Stephen Chambers |
| $—2025-08 | TômTex Co | Stephen Chambers |
| $2M2025-07 | Deep Root Biolabs | Stephen Chambers |
| $—2025-06 | 5h45 | Stephen Chambers |
| $—2025-05 | Calder Biosciences | Stephen Chambers |
| $—2025-04 | Bioeutectics | Stephen Chambers |
| $—2025-03 | Materia Bioworks | Stephen Chambers |
| $—2025-03 | Capro-X | Stephen Chambers |
| $—2025-03 | Forage Evolution | Stephen Chambers |
| $—2025-02 | Semion | Stephen Chambers |
| $—2025-01 | Asta Bio | Stephen Chambers |
| $—2024-12 | Vitarka Therapeutics | Stephen Chambers |
| $—2024-12 | BioLattice | Stephen Chambers |
| $1M2024-12 | Giraffe Bio | Stephen Chambers |
| $—2024-11 | FREZENT | Stephen Chambers |
| $—2024-11 | Quorum Earth | Stephen Chambers |
| $—2024-11 | Sci-Lume Labs | Stephen Chambers |
| $—2024-10 | Mothership Materials | Stephen Chambers |
| $—2024-10 | NanoPlume | Stephen Chambers |
| $—2024-10 | Bactery | Stephen Chambers |
| $10M2024-09 | microTERRA | Stephen Chambers |
| $—2024-09 | BugBiome | Stephen Chambers |
| $—2024-09 | Tinkeso Therapeutics | Stephen Chambers |
| $—2024-09 | Asta Bio | Stephen Chambers |
| $—2024-09 | Semion | Stephen Chambers |
| $—2024-09 | heXem bio | Stephen Chambers |
| $2M2024-08 | Moonlight Therapeutics | Stephen Chambers |
| $—2024-06 | Tastee Tape | Stephen Chambers |
| $5M2024-05 | Xias Bio | Stephen Chambers |
| $200K2024-05 | BugBiome | Stephen Chambers |
| $—2024-04 | Athos Bioindustries | Stephen Chambers |
| $500K2024-04 | Cell BioEngines | Stephen Chambers, Sean O’Sullivan |
| $2M2024-04 | CroBio | Stephen Chambers |
| $—2024-04 | Helex | Stephen Chambers |
| $1M2024-03 | Nukoko | Stephen Chambers |
| $—2024-03 | Sci-Lume Labs | Stephen Chambers |
| $—2024-03 | Cayuga Biotech | Stephen Chambers |
| $—2024-02 | Starstone Biomaterials | Stephen Chambers |
| $2M2024-01 | Earnest Agriculture | Stephen Chambers |
| $2M2024-01 | Bioeutectics | Stephen Chambers |
| $2M2023-11 | TômTex Co | Stephen Chambers |
| $—2023-10 | Rizlab Health | Stephen Chambers |
| $3M2023-10 | BioFluff | Stephen Chambers |
| $280K2023-09 | Terra Bioindustries Inc. | Stephen Chambers, Duncan Turner |
| $—2023-09 | Diptera | Stephen Chambers |
| $580K2023-09 | Xias Bio | Stephen Chambers |
| $—2023-09 | FREZENT | Stephen Chambers |
| $630K2023-09 | Calder Biosciences | Stephen Chambers |
| $—2023-08 | Nukoko | Stephen Chambers |
| $250K2023-08 | Cell BioEngines | Stephen Chambers, Sean O’Sullivan |
| $—2023-05 | Forte Protein | Stephen Chambers |
| $—2023-05 | Pannex Therapeutics Inc. | Stephen Chambers |
| $3M2023-05 | AvantGuard | Stephen Chambers |
| $—2023-04 | Palate Therapeutics | Stephen Chambers |
| $—2023-04 | Care Constitution | Stephen Chambers |
| $—2023-04 | Nukoko | Stephen Chambers |
| $2M2023-04 | Vitarka Therapeutics | Stephen Chambers |
| $—2023-03 | KOLIBRI | Stephen Chambers |
| $280K2023-03 | Cell BioEngines | Stephen Chambers, Sean O’Sullivan |
| $—2023-03 | Cayuga Biotech | Stephen Chambers |
| $1M2023-03 | FluoSphera | Stephen Chambers |
| $530K2023-02 | CroBio | Stephen Chambers |
| $10M2023-01 | Multus | Stephen Chambers |
| $530K2023-01 | Nukoko | Stephen Chambers |
| $720K2022-11 | Pneuma | Stephen Chambers |
| $—2022-11 | Free to Feed | Stephen Chambers |
| $6M2022-11 | Harmony Baby Nutrition | Stephen Chambers |
| $—2022-10 | AIMA | Stephen Chambers |
| $—2022-10 | Forte Protein | Stephen Chambers |
| $—2022-10 | Vitarka Therapeutics | Stephen Chambers |
| $—2022-10 | Helex | Stephen Chambers |
| $530K2022-09 | Vader Nanotechnologies | Stephen Chambers |
| $—2022-08 | Edge Foods | Stephen Chambers |
| $—2022-08 | Bioeutectics | Stephen Chambers |
| $250K2022-07 | Nat4Bio | Stephen Chambers |
| $3M2022-05 | Bosque Foods | Stephen Chambers |
| $—2022-04 | Conan MedTech | Stephen Chambers |
| $—2022-04 | Eachday | Stephen Chambers |
| $—2022-04 | Tesarakt | Stephen Chambers |
| $—2022-04 | Kalia Health | Stephen Chambers |
| $530K2022-03 | LizarBio Therapeutics | Stephen Chambers |
| $—2022-03 | Innatrix | Stephen Chambers |
| $—2022-02 | AromatEco | Stephen Chambers |
| $280K2022-02 | Nat4Bio | Stephen Chambers |
| $—2022-02 | ArgenTag | Stephen Chambers |
| $—2022-01 | Inso Biosciences | Stephen Chambers |
| $1M2022-01 | TômTex Co | Stephen Chambers |
| $—2022-01 | Cayuga Biotech | Stephen Chambers |
| $—2021-12 | Upright | Stephen Chambers |
| $—2021-10 | Kutanios | Stephen Chambers |
| $—2021-10 | Kyomei | Stephen Chambers |
| $—2021-10 | Pannex Therapeutics Inc. | Stephen Chambers |
| $—2021-09 | Bosque Foods | Stephen Chambers |
| $—2021-08 | Kutanios | Stephen Chambers |
| $—2021-08 | Rizlab Health | Stephen Chambers |
| $—2021-08 | Helex | Stephen Chambers |
| $1M2021-08 | Helex | Stephen Chambers |
| $2M2021-07 | Multus | Stephen Chambers |
| $—2021-06 | Ceragen | Stephen Chambers |
| $—2021-06 | SEQUENTIAL | Stephen Chambers |
| $3M2021-06 | Diptera | Stephen Chambers |
| $—2021-06 | TômTex Co | Stephen Chambers |
| $400K2021-05 | AvantGuard | Stephen Chambers |
| $—2021-04 | Multus | Stephen Chambers |
| $250K2021-03 | Beemmunity | Stephen Chambers |
| $—2021-02 | Basin Genomics | Stephen Chambers |
| $—2021-02 | Lux Bio | Stephen Chambers |
| $500K2021-02 | SEQUENTIAL | Stephen Chambers |
| $250K2021-02 | Free to Feed | Stephen Chambers |
| $310K2021-01 | Harmony Baby Nutrition | Stephen Chambers |
| $850K2020-12 | Biomage | Stephen Chambers, Sean O’Sullivan |
| $—2020-11 | Stembionix | Stephen Chambers |
| $—2020-11 | BrickBuilt Therapeutics | Stephen Chambers |
| $—2020-11 | Cayuga Biotech | Stephen Chambers |
| $—2020-10 | Bucha Bio | Stephen Chambers |
| $250K2020-06 | BrightCure | Stephen Chambers |
| $250K2020-06 | Cayuga Biotech | Stephen Chambers |
| $200K2020-05 | Biomage | Stephen Chambers, Sean O’Sullivan |
| $250K2020-05 | Multus | Stephen Chambers |
| $300K2020-05 | Diptera | Stephen Chambers |
| $550K2019-12 | AvantGuard | Stephen Chambers |
Roles
SOSV
CurrentGeneral Partner
Vertex Pharmaceuticals
CurrentDirector of Gene Expression
London Biofoundry
CurrentAdvisory Board Member
Imperial College London
CurrentRoyal Society Entrepreneur in Residence
Abpro
CurrentCo Founder
SynbiCITE
CurrentCEO
Bio-start
CurrentCo Founder
IndieBio
CurrentManaging Director, IndieBio NY