DaCapo Brainscience Appoints Leslie Williams as President & Chief Executive Officer; Announces Mridul Mehta, PhD, as Chief Technology Officer and Promotes Warren Hirst, PhD, to Chief Scientific Officer

Key Takeaways

  • Biotech veteran Leslie Williams appointed as President & CEO to lead company through transition from early discovery to clinical-stage drug developer.
  • Mridul Mehta, PhD announced as Chief Technology Officer and Warren Hirst, PhD promoted to Chief Scientific Officer.
  • Strengthened leadership advances company goal to identify and develop small-molecule therapies to slow or stop neurodegenerative disease, beginning with Parkinson’s.

DaCapo Brainscience today announced the appointment of Leslie Williams as President and Chief Executive Officer (CEO), the appointment of Mridul Mehta, PhD, as Chief Technology Officer (CTO), and the promotion of Warren Hirst, PhD, to Chief Scientific Officer (CSO). DaCapo Brainscience is focused on applying its proprietary discovery platform – an in vitro model of neurodegenerative disease that recapitulates human biology – to identify and develop small molecule therapies capable of slowing or halting progression of neurodegenerative disease.  

“From inception, our vision has been to address neurodegenerative diseases at the point of progression,” said Matthew Peck, Cofounder, Senior Advisor, and former interim Chief Executive Officer of DaCapo Brainscience. “We welcome Leslie to our company and look forward to the experience she brings as we transition to our next phase of growth.”

“Neurodegenerative diseases demand new thinking—especially when it comes to identifying and prioritizing novel pathways that truly drive progression. To improve translation, we need models that mirror how disease progresses in humans—not just snapshots of biology,” said Leslie Williams, President and CEO of DaCapo Brainscience. “Our goal is to develop small molecules against novel pathways with the potential to slow or stop neurodegenerative disease, starting with Parkinson’s disease. The strong science and incredible team that’s already in place offer an opportunity to build something truly meaningful.”

“While protein aggregation events are known to be critical in neurodegenerative diseases, DaCapo's platform is capable of deciphering, in human genomes and cells, the consequences of that process that are most critical to disease progression and resilience,” said Vikram Khurana, MD, PhD, Cofounder of and Senior Advisor to DaCapo, and Tracy T. Batchelor Endowed Chair and Chief, Division of Movement Disorders, Massachusetts General and Brigham and Women’s Hospitals. “In a short time, the teams led by Drs Hirst and Mehta identified a druggable, small-molecule target for Parkinson’s disease progression, reflecting the company’s potential to bring new treatments to patients.”

“A major breakthrough that led to the formation of DaCapo was our ability to convert human iPS cells into mature, aged cells - the foundation of a complex, physiological system that reconstructs Parkinson’s disease progression,” said Lorenz Studer, MD, Cofounder of DaCapo and Director of the Center for Stem Cell Biology at Memorial Sloan Kettering Cancer Center. “This platform functions as a true ‘trial in a dish’, where we can test hypotheses, evaluate targets, and assess therapeutic response in human biology before moving into clinical studies.”

Dr. Hirst, as Chief Scientific Officer, will oversee scientific strategy and execution across discovery and translational research, including the development and deployment of experimental systems designed to more accurately reflect the biology and progression of neurodegenerative disease.

Dr. Mehta, as Chief Technology Officer, has been leading the evolution and scaling of DaCapo Brainscience’s computational capabilities, including the company’s machine learning and AI approaches that integrate experimental signals and predictive modeling to inform discovery and development decisions.


About DaCapo Brainscience

DaCapo Brainscience uses its own discovery platform to develop small-molecule medicines for neurodegenerative diseases. By combining advanced data analysis with human-based laboratory models, we identify new disease pathways and design targeted treatments that aim to slow or stop disease progression, with an initial focus on Parkinson’s disease.

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Neurodegenerative diseases demand new thinking—especially when it comes to identifying and prioritizing novel pathways that truly drive progression. To improve translation, we need models that mirror how disease progresses in humans—not just snapshots of biology.
Leslie WilliamsPresident & CEO
Our goal is to develop small molecules against “novel pathways with the potential to slow or stop neurodegenerative disease, starting with Parkinson’s disease. The strong science and incredible team that’s already in place offer an opportunity to build something truly meaningful.
Leslie WilliamsPresident & CEO
Matthew Peck
Cofounder, Senior Advisor and former Interim Chief Executive Officer
Mr. Peck is a Co-Founder of DaCapo Brainscience.

Matt was a partner at Caxton Associates, a leading macro-oriented hedge fund, from July 2007 through March 2019. Matt was promoted to Partner on January 1, 2013. Between 2007 and 2010 Matt worked out of Caxton’s New York office, its London office between 2010 and 2018 and returned to New York in 2018. Matt ran a macro book that focused primarily on emerging markets credit, rates, foreign exchange and equities. His peak AUM was nearly $1 billion. While at Caxton Matt had a total unleveraged return of 100%. Prior to joining Caxton Matt worked for a year as a portfolio manager at Dimaio Ahmad Capital, a New York based credit hedge fund. Before that Matt worked at Citigroup in several roles, including that of a #1 rated Institutional Investor analyst. Matt started his career at Salomon Brothers in 1994 in Emerging Markets Research.

Matt is a 1994 graduate of Dartmouth College where he double-majored in economics and government.
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Leslie Williams
President & CEO
Leslie Williams is an accomplished Founder, Chief Executive Officer, and Board Director with more than 25 years of experience building and leading high-growth life science companies, including HC Bioscience, ImmusanT, Ventaira Pharmaceuticals, and INO Therapeutics. She is currently President & CEO of DaCapo Brainscience, where she brings a mission-driven focus to advancing new medicines for patients with serious and underserved diseases.

At DaCapo Brainscience, Leslie leads a team applying the company’s proprietary discovery platform to uncover novel pathways in neurodegenerative disease and develop small-molecule therapeutics, beginning with Parkinson’s disease.

She has a proven track record of founding and scaling innovative biotech ventures and advancing first-in-class science — from tRNA-based protein editing therapeutics for rare disease and oncology, to novel immunotherapies for autoimmune disease, to a breakthrough treatment for neonatal pulmonary hypertension based on nitric oxide, a discovery recognized with the 1998 Nobel Prize in Physiology or Medicine.

Leslie has served as a Venture Partner and holds extensive fundraising experience as a CEO, having raised more than $300 million in venture capital and non-dilutive funding through philanthropy, strategic partnerships, and collaborations. She has led organizations from discovery through clinical development and successful exits, with deep expertise across strategy, operations, corporate development, and regulatory planning.

Her therapeutic experience spans autoimmune and rare diseases, genetic medicine, oncology, respiratory and critical care. Leslie’s board service includes BIO, MassBio, Ocular Therapeutix (Nasdaq: OCUL), Axelyf Inc., Make-A-Wish Massachusetts & Rhode Island, CSCRI, and the Advisory Board of Life Science Cares. She has also served as an Operating Partner at Accelerator Life Science Partners, Entrepreneur-in-Residence at the University of Virginia and the University of Iowa, a Mentor with the Termeer Foundation, and a Founding Ambassador of BioBoost.

Trained as a critical-care nurse, Leslie brings a deeply patient-centered perspective to leadership. She holds an MBA from Washington University’s Olin School of Business and a B.S. in Nursing/Biology, cum laude, from the University of Iowa, where she received the Distinguished Alumni Award (2015) and the College of Pharmacy Honorary Alumni Award (2019).
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Warren Hirst, PhD
Chief Scientific Officer
Warren Hirst is responsible for defining and executing the scientific strategy for DaCapo Brainscience, leading the research scientists who are developing novel CNS stem-cell models that recapitulate disease mechanisms and progression. These models will be used to select targets that drive Parkinson’s disease progression, understand their mechanism of action, screen and optimize leads into novel therapeutics.

Warren has over 25 years of experience in research and development of novel therapeutics for neurodegenerative disorders, targeting mechanisms strongly supported by human genetics and pathology, at Biogen, Pfizer, Wyeth, GSK and SmithKline Beecham, prior to joining DaCapo Brainscience in January 2024. Warren has directly lead teams that have discovered and advanced 3 molecules into clinical trials and has been on teams that have made similar advances with 12 further molecules.

Warren has published over 90 peer-reviewed scientific papers and is actively engaged in the wider scientific community via collaborations with key academic partners, and his service on NINDS study sections, foundation grant review committees, and as an ad-hoc reviewer for multiple journals including Cell, Neuron and PNAS.

Warren has a strong, and long-term, dating back to 2006, relationship with the Michael J Fox Foundation for Parkinson’s Research, having received multiple grants in addition to serving as a reviewer and assessor. He served on their Executive Scientific Advisory Board from 2017-2019 and remains a close scientific advisor. In 2019 Warren received the Bill Langston award from the MJFF in recognition of his outstanding contributions to The Michael J. Fox Foundation for Parkinson’s Research. Warren was part of the foundational ASAP collaborative research network; a member of Team Kordower. Warren is currently on the Parkinson’s Foundation Executive Scientific Advisory Board and an advisor to SPARK NS.

Warren holds a B.Sc. in biochemistry and a Ph.D. in molecular neurobiology from Imperial College of Science, Technology and Medicine, London.
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Mridul Mehta
Chief Technology Officer
Mridul Mehta is Chief Technology Officer and Head of Computational Research at DaCapo.

Mridul’s expertise is in algorithms and the application of AI/ML techniques to solve complex real-world problems. He has been with DaCapo since 2021. Prior to DaCapo, he spent over 15 years in quantitative finance during which we also served as European head of equity high-frequency trading for Citadel Investment Group. He serves as advisor to several AI/ML startups.

Mridul has a PhD in mathematics (algebraic geometry) from the University of Chicago and was a research fellow at the Max-Planck Institute in Germany.
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Media Contact

Media and Investors
hello@dacapobrain.com

DaCapo Brainscience specializes in developing small molecule therapies aimed at slowing or halting the progression of neurodegenerative diseases using its proprietary discovery platform that mimics human biology.

The company announced the appointment of Leslie Williams as President and CEO, Mridul Mehta, PhD, as Chief Technology Officer, and the promotion of Warren Hirst, PhD, to Chief Scientific Officer.

DaCapo's platform is designed to mirror disease progression as it occurs in humans, allowing for the identification of novel pathways critical to neurodegenerative diseases and enabling more effective drug development.

By focusing on new pathways and employing innovative models, DaCapo aims to create therapies that could significantly slow or even stop the progression of Parkinson’s disease, improving patient outcomes.

With their extensive experience, the new leadership team will enhance DaCapo's scientific strategy, focusing on integrating advanced computational capabilities and experimental systems to better reflect the complexities of neurodegenerative diseases.