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Experts in Polymer Therapeutics


Our founding scientific and management teams have deep experience in polymer drug development. Serina co-founders Dr. Milton Harris and Dr. Michael Bentley developed the first-generation of PEGylated drugs at Shearwater Polymers. PEG (polyethylene glycol) has become widely accepted as the standard technology platform for improving biological drugs with more than 30 FDA approved drugs based on the PEG platform. POZ is engineered to address the limitations of PEG and other biocompatible polymers.

Executive Team

Simba-Gill
Simba Gill, Ph.D.
Executive Chairman
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Simba Gill, Ph.D.
Executive Chairman

Simba has a wealth of biotech and pharma experience in building companies and transformative platforms as well as developing products, having served in key executive roles at Maxygen, Systemix, Boehringer Mannheim and Celltech over his thirty-year career.  He has served as a partner and advisor at Flagship Pioneering where he was the founding CEO of Evelo Biosciences and as a Venture Partner at TPG where he was Founder CEO of Moksh8 Pharmaceuticals. Simba is currently a board member at Foghorn Therapeutics (NASDAQ – FHTX) and Sensorium Therapeutics. He earned his MBA at INSEAD and received his Ph.D. from King’s College, London.

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Steve Ledger
Steve Ledger
CEO and Director
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Steve Ledger
CEO and Director

Steve has served as interim CEO since March 2024 and CFO from March 2022 to March 2024. He has more than 35 years of experience as an investor, board member, advisor, and in operational roles with early-stage companies. He is a General Partner of Form & Fiction Ventures (FFV), a venture studio that launches and invests in startup and seed stage companies focused on socially responsible initiatives. He has served in investment management roles at Caldwell Sutter Capital, Tamalpais Partners, SF Sentry Securities, Kayne Anderson, and Fidelity Investments. Mr. Ledger received a B.A. in Economics from the University of Connecticut.

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Randall Moreadith, M.D., Ph.D.
Chief Development Officer
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Randall Moreadith, M.D., Ph.D.
Chief Development Officer

Randall has served as Serina’s CDO since March 2024. He served as Serina’s President, CEO, and member of Serina’s board of directors from September 2010 to March 2024. Prior to Serina, Randall served in executive leadership roles including CDO at Nektar Therapeutics, CMO of Cardium Therapeutics, CMO at Renovis, and President / co-Founder of ThromboGenics (now Oxurion). Dr. Moreadith received his M.D. from Duke University and is trained clinically in Internal Medicine and Cardiovascular Diseases. Following his Fellowship in Cardiology at Duke University, he joined the laboratory of Professor Philip Leder where he was a Howard Hughes Medical Institute Fellow in Genetics at Harvard Medical School. Dr. Moreadith received his Ph.D. from Johns Hopkins University.

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Greg Curban
Greg Curhan
CFO
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Greg Curhan
CFO

Greg joined Serina as CFO in August 2024. He has over 35 years of operational, financial, capital markets and strategic advisory experience in various sectors including Investment Banking and Medical Device/Life Sciences. Greg has been a Partner at FLG Partners since 2020. Also since 2020, Greg has served as the CFO for Curevo Vaccines, a private biotech company focused on infectious disease immunology. As CFO, Greg has managed Finance, Legal, HR, and Investor Relations functions for Public and Private companies. He has raised equity and debt capital for both private and public companies, completed numerous successful IPOs, and executed M&A transactions, both acquiring and divesting companies. He has also served in CEO, President and Board of Director capacities. Greg earned a BA degree in Economics from Dartmouth College.

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Dr. Srini Tenjarla
Srini Tenjarla, Ph.D.
SVP CMC & Formulation
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Srini Tenjarla, Ph.D.
SVP CMC & Formulation

Dr. Tenjarla is responsible for implementing / overseeing the CMC activities across Serina’s current and future pipeline assets. Srini joined Serina from Takeda Pharmaceuticals, where he served as Vice President and Head of Drug Product Development and Process Chemistry Development/Outsourcing in Pharmaceutical Sciences. In this role, he oversaw phase-appropriate development from Phase 1 through product validation and pre-approval inspection readiness. Prior to his tenure at Takeda, Dr. Tenjarla held several leadership roles at Shire Pharmaceuticals, culminating in his position as Vice President of Pharmaceutical Sciences. Srini holds a Ph.D. in Pharmaceutical Sciences from the University of Houston and a Bachelor of Science in Pharmacy from Andhra University.

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Board of Directors & Advisory

Board of Directors

Simba Gill, Ph.D.
Executive Chairman
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Simba Gill, Ph.D.
Executive Chairman

Simba has a wealth of biotech and pharma experience in building companies and transformative platforms as well as developing products, having served in key executive roles at Maxygen, Systemix, Boehringer Mannheim and Celltech over his thirty-year career.  He has served as a partner and advisor at Flagship Pioneering where he was the founding CEO of Evelo Biosciences and as a Venture Partner at TPG where he was Founder CEO of Moksh8 Pharmaceuticals. Simba is currently a board member at Foghorn Therapeutics (NASDAQ – FHTX) and Sensorium Therapeutics. He earned his MBA at INSEAD and received his Ph.D. from King’s College, London.

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Steve Ledger
CEO and Director
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Steve Ledger
CEO and Director

Steve has served as interim CEO since March 2024 and CFO from March 2022 to March 2024. He has more than 35 years of experience as an investor, board member, advisor, and in operational roles with early-stage companies. He is a General Partner of Form & Fiction Ventures (FFV), a venture studio that launches and invests in startup and seed stage companies focused on socially responsible initiatives. He has served in investment management roles at Caldwell Sutter Capital, Tamalpais Partners, SF Sentry Securities, Kayne Anderson, and Fidelity Investments. Mr. Ledger received a B.A. in Economics from the University of Connecticut.

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Milton Harris, PhD
Founder and Director
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Milton Harris, PhD
Founder and Director

Milton served as Chair of the Serina Board of Directors since co-founding Serina in 2006. Prior to founding Serina, he was the Founder and Chief Executive Officer of Shearwater Polymers, Inc. (Shearwater). Shearwater was founded by Dr. Harris in 1992 and sold in 2001 to Nektar Therapeutics, Inc. Shearwater successfully patented, manufactured, and partnered PEG technology that enabled multiple drug products including Neulasta® (Amgen) and Pegasys® (Roche). Dr. Harris earned a B.S. from Auburn University and a Ph.D. from the University of Texas.

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Gregory Bailey, M.D.
Director
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Gregory Bailey, M.D.
Director

Greg is the Executive Chairman of Juvenescence which he co-founded in 2017. He is also a board director of public companies Biohaven Pharmaceuticals (NYSE – BHVN) and Portage Biotech (NASDAQ – PRTG). Dr. Bailey founded and served as a director of a number of private and public companies and previously served as a managing partner of Palantir Group, Inc., a merchant bank involved in a number of biotech company startups and financings. Dr. Bailey practiced emergency medicine for ten years before entering finance. Dr. Bailey received his M.D. from the University of Western Ontario.

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Richard Marshall, CBE, M.D., Ph.D.
Director
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Richard Marshall, CBE, M.D., Ph.D.
Director

Richard is the CEO of Juvenescence. He was SVP and Global Head of Respiratory & Immunology Development at AstraZeneca, overseeing the development and approval of five new medicines including the SARS CoV-2 vaccine, Vaxzevria®, and combination antibody, EvushieldTM. Prior to AstraZeneca, Richard served 16 years in increasingly senior roles at GSK, including Vice President of Fibrosis R&D. He received a Bachelor of Science in Neuroscience, a Bachelor of Medicine, a Bachelor of Surgery, and a Doctor of Philosophy in Medical Sciences from University College London. Dr. Marshall has co-authored more than 60 original publications in journals including The Lancet and The New England Journal of Medicine.

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Remy Gross
Director
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Remy Gross
Director

Remy has served as Vice President, Business Development & Technology Advancement at the Buck Institute for Research on Aging since 2006. Mr. Gross has advised and helped create multiple new biopharmaceutical startups at Buck, including Unity Biotechnology, Aeovian Therapeutics, and BhB Therapeutics. Prior to Buck, Mr. Gross held increasingly senior roles, including VP of Operations at Shearwater Polymers, and at Nektar Therapeutics after its acquisition of Shearwater. Mr. Gross serves as a board director of BhB Therapeutics, Napa Therapeutics, and Selah Therapeutics. Mr. Gross received a B.S. in Chemistry from Loyola University New Orleans.

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Karen J. Wilson
Director
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Karen J. Wilson
Director

Karen J. Wilson has more than 30 years of industry and leadership experience in life sciences companies across finance, strategy, and risk management. She joined Serina’s Board in January 2025. She also currently serves as independent director and audit committee chair for Elicio Therapeutics Board, joining Elicio in June 2023, after the merger with Angion Biomedica where she had been a board member since April 2020. She also currently serves as independent director and audit committee chair for Connect Biopharma, and LAVA Therapeutics. Ms. Wilson previously served as a board member at Vaxart, Inc. until August 2022. Ms. Wilson served as Senior Vice President of Finance at Jazz Pharmaceuticals plc, a pharmaceutical company, until September 2020 after serving as Vice President of Finance and Principal Accounting Officer. Prior to joining Jazz in 2011, she served as Principal Accounting Officer and Vice President of Finance at PDL BioPharma, Inc., a life sciences company. She previously served as a principal at the consulting firm of Wilson Crisler LLC, Chief Financial Officer of ViroLogic, Inc., a biosciences company, Chief Financial Officer and Vice President of Operations for Novare Surgical Systems, Inc., a medical device manufacturer, and as a consultant and auditor for Deloitte & Touche LLP, a professional services firm. Ms. Wilson is a Certified Public Accountant in the State of California and received a B.S. in Business from the University of California, Berkeley.

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Scientific Advisory Board

Gaurav Sahay, PhD
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Gaurav Sahay, PhD

Guarav is a professor in the Department of Pharmaceutical Sciences and co-Director for the Center of Innovative Drug Delivery and Imaging (CIDDI), at the College of Pharmacy at Oregon State University. Dr. Sahay’s lab is developing novel nanotechnology-based platforms including lipid-based nanoparticles for effective delivery of messenger RNA therapeutics for treatment of cystic fibrosis, retinal degeneration and against SARS-CoV2. He has more than 60-peer-reviewed publications in top tier journals including Science Advances, Nature, Nature Communications, Nature Biotechnology, Nature Nanotechnology, Journal of Controlled Release, and Nano Letters.

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C. Warren Olanow, MD
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C. Warren Olanow, MD

Warren is Professor Emeritus in and former Chairman of the Department of Neurology and Department of Neurosciences at the Mount Sinai School of Medicine in New York. He has served on the board of directors of the National Space Biomedical Research Institute and the executive committee of the Michael J. Fox Foundation Scientific Advisory Board, and he is the former Chairman of the Scientific Advisory Board of the Bachmann-Strauss Dystonia & Parkinson Foundation. Dr. Olanow is the former Co-Editor-in-Chief of the journal, Movement Disorders. He has been principal investigator of numerous studies leading to approval of drugs and devices for treating neurodegenerative diseases.

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William K. Schmidt, PhD
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William K. Schmidt, PhD

Bill is President of NorthStar Consulting, LLC, which specializes in providing advice on preclinical and clinical studies of novel analgesic drugs. Dr. Schmidt has more than 30 years of experience in pain medicine pharmaceutical development. He is President and CEO of Catalina Pharma, part-time Senior Vice President of Global Clinical Development for Helixmith Inc., part-time Vice President of Clinical Development for EicOsis, LLC and Chief Medical Officer for Ensysce Biosciences.

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