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Antoni Ribas
Director/Board Member at
ARCUS BIOSCIENCES, INC.
Net worth: 1 M $ as of 2026-03-30
Profile
Antoni Ribas is the founder of Tango Therapeutics Sub, Inc. founded in 2017, Tango Therapeutics, Inc. founded in 2017, Kalthera, Inc. founded in 2021, and Lutris Pharma Ltd. founded in 2015 where Dr. Ribas holds the title of Chairman since 2022.
Dr. Ribas was also the founder of Kite Pharma, Inc.,Flexus Biosciences, Inc.,PACT Pharma, Inc...
Dr. Ribas was previously Director-Tumor Immunology Program at Jonsson Comprehensive Cancer Center, Independent Director at Arcus Biosciences, Inc. since 2019, Professor-Medicine, Surgery & Molecular at the University of California, Los Angeles, Venture Partner at Ysios Capital Partners SGEIC SA since 2020, and Professor at the University of California.
Former positions include Director at The Parker Institute For Cancer Immunotherapy and President-Elect at the American Association for Cancer Research.
Education includes a doctorate degree conferred in 1990 and another doctorate degree conferred in 1997, both from the University of Barcelona.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-06-09 | 52,203 ( 0.04% ) | 1 M $ | 2026-03-30 |
Antoni Ribas active positions
| Companies | Position | Start |
|---|---|---|
| ARCUS BIOSCIENCES, INC. | Director/Board Member | 2019-10-27 |
University of California
 University of California Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | - |
Jonsson Comprehensive Cancer Center
 Jonsson Comprehensive Cancer Center Medical/Nursing ServicesHealth Services Part of University of California, the Jonsson Comprehensive Cancer Center is a renowned cancer center located in Los Angeles, CA. The center is known for its research, diagnosis, treatment, and prevention of cancer. With over 500 scientists and physicians, it conducts basic and translational cancer research and provides state-of-the-art cancer care. The center has over 400 active clinical trials focused on cancer care and has been instrumental in developing 18 FDA-approved therapies. The Jonsson Cancer Center Foundation at UCLA funds leading-edge research to improve therapies for cancer patients worldwide. | Corporate Officer/Principal | - |
University of California, Los Angeles
 University of California, Los Angeles Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | - |
Lutris Pharma Ltd.
 Lutris Pharma Ltd. Pharmaceuticals: MajorHealth Technology Operates as a clinical stage biopharmaceutical company that improves anti cancer therapy effectiveness | Founder | 2015-12-13 |
Ysios Capital Partners SGEIC SA
 Ysios Capital Partners SGEIC SA Investment ManagersFinance Ysios Capital invests in companies located across the globe. The firm targets companies operating in the fields of the biotechnology sector. It provides financing for early and growth stage capital requirements. | Private Equity Investor | 2020-05-31 |
Former positions of Antoni Ribas
| Companies | Position | End |
|---|---|---|
Kalthera, Inc.
 Kalthera, Inc. Miscellaneous Commercial ServicesCommercial Services Provides progressive clinical trials services | Founder | 2021-01-01 |
The Parker Institute For Cancer Immunotherapy
 The Parker Institute For Cancer Immunotherapy Miscellaneous Commercial ServicesCommercial Services Operates cancer research | Director/Board Member | - |
| TANGO THERAPEUTICS, INC. | Founder | - |
| ░░░░░░ ░░░░░░░░░░░░ ░░░░ | ░░░░░░░ | - |
| ░░░░ ░░░░░░ ░░░ | ░░░░░░░ | - |
Training of Antoni Ribas
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
81
1st degree connections
15
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 15 |
|---|---|
University of California, Los Angeles
University of California, Los Angeles Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Barcelona
 University of Barcelona Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
American Association for Cancer Research
 American Association for Cancer Research Miscellaneous Commercial ServicesCommercial Services Engages in research, education, communication and collaboration to prevent and cure cancer | Commercial Services |
Ysios Capital Partners SGEIC SA
Ysios Capital Partners SGEIC SA Investment ManagersFinance Ysios Capital invests in companies located across the globe. The firm targets companies operating in the fields of the biotechnology sector. It provides financing for early and growth stage capital requirements. | Finance |
Kite Pharma, Inc.
 Kite Pharma, Inc. Pharmaceuticals: MajorHealth Technology Operates as a clinical stage biotechnology company which engages in the development of novel cancer immunotherapeutic products | Health Technology |
Jonsson Comprehensive Cancer Center
Jonsson Comprehensive Cancer Center Medical/Nursing ServicesHealth Services Part of University of California, the Jonsson Comprehensive Cancer Center is a renowned cancer center located in Los Angeles, CA. The center is known for its research, diagnosis, treatment, and prevention of cancer. With over 500 scientists and physicians, it conducts basic and translational cancer research and provides state-of-the-art cancer care. The center has over 400 active clinical trials focused on cancer care and has been instrumental in developing 18 FDA-approved therapies. The Jonsson Cancer Center Foundation at UCLA funds leading-edge research to improve therapies for cancer patients worldwide. | Health Services |
University of California
University of California Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Flexus Biosciences, Inc.
 Flexus Biosciences, Inc. BiotechnologyHealth Technology Provides cancer therapeutics through innovative apps | Health Technology |
Arcus Biosciences, Inc.
 Arcus Biosciences, Inc. BiotechnologyHealth Technology Develops and commercializes novel therapies for the treatment of lung & gastrointestinal cancers | Health Technology |
Tango Therapeutics Sub, Inc.
 Tango Therapeutics Sub, Inc. BiotechnologyHealth Technology Develops transformational new drugs for cancer patients | Health Technology |
The Parker Institute For Cancer Immunotherapy
The Parker Institute For Cancer Immunotherapy Miscellaneous Commercial ServicesCommercial Services Operates cancer research | Commercial Services |
PACT Pharma, Inc.
 PACT Pharma, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceutical products | Health Technology |
Lutris Pharma Ltd.
Lutris Pharma Ltd. Pharmaceuticals: MajorHealth Technology Operates as a clinical stage biopharmaceutical company that improves anti cancer therapy effectiveness | Health Technology |
Tango Therapeutics, Inc.
 Tango Therapeutics, Inc. BiotechnologyHealth Technology Operates as biotechnology company that engages in discovering and delivering precision cancer medicines | Health Technology |
Kalthera, Inc.
Kalthera, Inc. Miscellaneous Commercial ServicesCommercial Services Provides progressive clinical trials services | Commercial Services |
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