Jeffrey Stein
Net worth: 2 M $ as of 2026-06-29
Net worth: 2 M $ as of 2026-06-29
Jeffrey L.
Stein was the founder of Quorex Pharmaceuticals, Inc., founded in 1999, where the title held was Director, Chief Scientific Officer & Executive VP in 2005.
Dr. Stein was the founder of Antibiotics Working Group, founded in 2012, where the title held was Chairman & President from 2012 to 2013.
Dr. Stein currently serves as Independent Director at IDEAYA Biosciences, Inc. since 2015.
Former positions include President, Chief Executive Officer & Director at Cidara Therapeutics, Inc. from 2021 to 2026; President, Chief Executive Officer & Director at Trius Therapeutics, Inc. from 2007 to 2013; Chairman at Antimicrobials Working Group from 2017 to 2019; Director-Venture Development at the University of California San Diego in 2006; Independent Director at Prevacept Infection Control, Inc.; Lead Independent Director at Paratek Pharmaceuticals, Inc. from 2022 to 2023; Principal Scientist at Diversa Corp.
from 1999 to 2000; Venture Partner at Sofinnova Investments, Inc. from 2005 to 2010; Principal Scientist at The Agouron Institute in 1995.
Education includes undergraduate degree from The California State University in 1979, graduate degree from The California State University in 1983, doctorate from the University of California San Diego in 1991, and doctorate from California Institute of Technology in 1993.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-06-15 | 54,281 ( 0.06% ) | 2 M $ | 2026-06-29 |
| Companies | Position | Start |
|---|---|---|
| IDEAYA BIOSCIENCES, INC. | Director/Board Member | 2015-09-30 |
| Companies | Position | End |
|---|---|---|
| CIDARA THERAPEUTICS | Chief Executive Officer | 2026-01-06 |
| PARATEK PHARMACEUTICALS, INC. | Director/Board Member | 2023-09-20 |
Antimicrobials Working Group
Antimicrobials Working Group Miscellaneous Commercial ServicesCommercial Services Operates as an association of antimicrobials and diagnostics companies | Chairman | 2019-01-16 |
Trius Therapeutics, Inc.
Trius Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Develops antibacterial drugs for the treatment of infections | Chief Executive Officer | 2013-08-31 |
Antibiotics Working Group | Founder | 2013-08-31 |
Active
Inactive
Listed companies
Private companies
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
| Private companies | 14 |
|---|---|
Diversa Corp.
Diversa Corp. Miscellaneous Commercial ServicesCommercial Services Researches and develops genomic tools and biological technology for the agricultural industry | Commercial Services |
Sofinnova Investments, Inc.
Sofinnova Investments, Inc. Investment ManagersFinance Sofinnova Investment invests in companies located in the United States and Europe. The firm targets companies operating in the fields of health technology services and life science. It participates in early and later stage capital requirements. | Finance |
Quorex Pharmaceuticals, Inc.
Quorex Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Develops pharmaceutical products | Health Technology |
The California State University
The California State University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
California Institute of Technology
California Institute of Technology Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of California San Diego
University of California San Diego Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Trius Therapeutics, Inc.
Trius Therapeutics, Inc. Pharmaceuticals: MajorHealth Technology Develops antibacterial drugs for the treatment of infections | Health Technology |
Prevacept Infection Control, Inc.
Prevacept Infection Control, Inc. Pharmaceuticals: MajorHealth Technology Develops and designs products to eliminate microbial infections | Health Technology |
The Agouron Institute
The Agouron Institute The Agouron Institute is a private, non-profit research foundation established in 1978 that supports innovative research in biology and chemistry through targeted grants, fellowships, and scientific meetings. The non-profit company is based in Pasadena, CA. The institute initially focused on marine microbiology and later expanded into areas such as protein engineering and computational biology, which led to the creation of Agouron Pharmaceuticals, a biotech company known for developing the HIV protease inhibitor Viracept™. After the sale of Agouron Pharmaceuticals, the institute shifted its strategy to leverage investments in basic and applied biological and chemical research. It organizes focused scientific meetings to identify promising short-term research projects in emerging or underfunded fields, publishes white papers with funding recommendations, and provides grants primarily in structural biology—especially cryo-electron microscopy, electron tomography, and ribosome studies—as well as in geobiology and microbial oceanography. Grants support equipment acquisition, technology development, and research on biomolecular complexes, often in collaboration with other organizations. The institute has historically supported postdoctoral and graduate fellowships in structural biology and geobiology, partnering with established foundations, though some fellowship programs have concluded or been discontinued. The institute does not accept unsolicited proposals and focuses on catalyzing research that may lack traditional funding, occasionally supporting exploratory fieldwork and encouraging other agencies to invest in these areas. Its website offers information on grant programs, funded projects, publications, and scientific meeting activities. The company was founded by John N. Abelson. | |
Cidara Therapeutics, Inc.
Cidara Therapeutics, Inc. Pharmaceuticals: OtherHealth Technology Engages in the discovery, development, and commercialization of novel anti-infectives | Health Technology |
Paratek Pharmaceuticals, Inc.
Paratek Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Manufactures pharmaceuticals | Health Technology |
Antibiotics Working Group | |
IDEAYA Biosciences, Inc.
IDEAYA Biosciences, Inc. Pharmaceuticals: MajorHealth Technology Operates as oncology-focused precision medicine company which develops and sells cancer therapeutics | Health Technology |
Antimicrobials Working Group
Antimicrobials Working Group Miscellaneous Commercial ServicesCommercial Services Operates as an association of antimicrobials and diagnostics companies | Commercial Services |
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