Profile
Timothy P.
Clackson currently works at IDRx, Inc., as President, Chief Executive Officer & Director from 2024.
Dr. Clackson also formerly worked at Theseus Pharmaceuticals, Inc., as President, Chief Executive Officer & Director from 2021 to 2023, Forma Therapeutics Holdings, Inc., as Independent Non-Executive Director from 2018 to 2022, F-Star Therapeutics, Inc. (United States), as Independent Director, Elevation Oncology, Inc., as Independent Director from 2020 to 2025, Massachusetts Biotechnology Council, as Director, Forma Therapeutics, Inc., as Director, ARIAD Pharmaceuticals, Inc., as CSO, President-Research & Development from 2010 to 2017, and Xilio Therapeutics, Inc., as President & Chief Technology Officer from 2018 to 2021.
Dr. Clackson received his undergraduate degree from the University of Oxford and doctorate degree from the University of Cambridge.
Timothy Clackson active positions
| Companies | Position | Start |
|---|---|---|
IDRx, Inc.
IDRx, Inc. BiotechnologyHealth Technology Operates as a clinical-stage biopharmaceutical company dedicated to transforming cancer treatment | Chief Executive Officer | 12/03/2024 |
Former positions of Timothy Clackson
| Companies | Position | End |
|---|---|---|
| ELEN ONCO | Director/Board Member | 23/07/2025 |
| THESEUS PHARMACEUTICALS, INC. | Chief Executive Officer | 07/12/2023 |
| FORMA THERAPEUTICS HOLDINGS, INC. | Director/Board Member | 14/10/2022 |
| XILIO THERAPEUTICS, INC. | President | 01/04/2021 |
| ARIAD PHARMACEUTICALS, INC. | Chief Tech/Sci/R&D Officer | 01/05/2017 |
Training of Timothy Clackson
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 11 |
|---|---|
ARIAD Pharmaceuticals, Inc.
ARIAD Pharmaceuticals, Inc. BiotechnologyHealth Technology Discovers, develops and commercializes small-molecule drugs for the treatment of cancer | Health Technology |
Forma Therapeutics, Inc.
Forma Therapeutics, Inc. BiotechnologyHealth Technology Discovers and develops medicines for cancer and other genetically driven diseases | Health Technology |
Forma Therapeutics Holdings, Inc.
Forma Therapeutics Holdings, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical-stage biopharmaceutical company which develops and commercializes novel therapeutics to transform the patient living | Health Technology |
University of Oxford
University of Oxford Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Cambridge
University of Cambridge Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Massachusetts Biotechnology Council
Massachusetts Biotechnology Council Miscellaneous Commercial ServicesCommercial Services Operates as an association of biotechnology companies | Commercial Services |
F-Star Therapeutics, Inc. (United States)
F-Star Therapeutics, Inc. (United States) Pharmaceuticals: MajorHealth Technology Engages in discovery, development and preparation of bioavailable therapeutics | Health Technology |
Xilio Therapeutics, Inc.
Xilio Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Operates as a biotechnology company which develops tumor-selective immuno-oncology therapies | Health Technology |
Theseus Pharmaceuticals, Inc.
Theseus Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Operates as a biopharmaceutical company that develops and supplies drugs for cancer patients | Health Technology |
Elevation Oncology, Inc.
Elevation Oncology, Inc. BiotechnologyHealth Technology Develops elevating precision medicines for cancer treatment | Health Technology |
IDRx, Inc.
IDRx, Inc. BiotechnologyHealth Technology Operates as a clinical-stage biopharmaceutical company dedicated to transforming cancer treatment | Health Technology |
- Stock Market
- Insiders
- Timothy Clackson
















