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About Us

HilleVax is a biopharmaceutical company focused on the development and commercialization of novel vaccines. Our initial program, HIL-214, is a virus-like particle (VLP) based vaccine candidate in development for the prevention of moderate-to-severe acute gastroenteritis caused by norovirus infection.

Management Team

Rob Hershberg, M.D., Ph.D., is President, Chief Executive Officer and chairman of the board of directors of HilleVax. Rob is a Venture Partner with Frazier Healthcare Partners and has been working with Frazier and its portfolio companies as an Entrepreneur-in-Residence, Senior Advisor, and executive for 14 years. He was formerly President and Chief Executive Officer of VentiRx Pharmaceuticals, a Frazier-founded company developing a small molecule therapeutic to activate the immune system against solid tumors. Rob cofounded VentiRx while an entrepreneur-in-residence at Frazier and led the company through its transformational partnership with Celgene. He joined Celgene in 2014 to lead their efforts in Immuno-Oncology, was promoted to Executive Vice President and Chief Scientific Officer in 2016 and was subsequently Executive Vice President and Head of Business Development & Global Alliances and served as a member of the Executive Committee until the acquisition of Celgene by Bristol-Myers Squibb in 2019.

Prior to VentiRx, Rob served as Senior Vice President and Chief Medical Officer of Dendreon Corporation and led clinical development of Provenge, which was approved for metastatic prostate cancer. Before Dendreon, he was Vice President of Medical Genetics at Corixa, a Frazier portfolio company which was acquired by GlaxoSmithKline. Earlier, Rob was an Assistant Professor at Harvard Medical School and an Associate Physician at Brigham and Women’s Hospital in Boston.

Rob completed his undergraduate and medical degrees at the University of California, Los Angeles and received his Ph.D. at the Salk Institute for Biological Studies.

Paul Bavier is General Counsel, Secretary and Chief Administrative Officer at HilleVax. Paul has been practicing law for more than 20 years, most of which has been spent as an in-house attorney leading and building legal organizations within the biotechnology industry. Most recently, he led the legal function at VelosBio in preparation for the company’s IPO and through its acquisition by Merck.

Prior to VelosBio, Paul was General Counsel, Secretary and Chief Compliance Officer for Avedro, Inc., where he was responsible for legal, corporate secretary and commercial compliance matters related to the commercial launch of Avedro’s first product, the company’s IPO and its acquisition by Glaukos Corporation. Earlier, Paul was the General Counsel and Vice President of Corporate Development at Biodel Inc., where he served from 2007 to 2016. Paul began his legal career as a corporate attorney at Ropes and Gray.

Paul holds a J.D. from the University of Michigan Law School and a B.A. from Middlebury College.

Astrid Borkowski, M.D., Ph.D., is Chief Medical Officer at HilleVax. Astrid has more than 20 years of experience in vaccine development, spanning all development phases, global filing, approval, and post marketing stages, as well as Medical Affairs for pre-and post-marketing activities. Astrid’s most recent role was VP, Head of Clinical Development at the Takeda’s Vaccine Business Unit where she oversaw the clinical development of all vaccine assets, including HIL-214.

Prior to joining Takeda, Astrid was Chief Medical Officer responsible for the European Region and later led early viral and bacterial vaccine development at Novartis Vaccines. In her roles prior to Novartis Vaccines, she was responsible for the pandemic influenza vaccine clinical development at GSK, and worked on meningococcal and seasonal influenza vaccine development during her time at Chiron Vaccines.

Astrid completed her Medical Degree at the Humboldt University in Berlin, Germany, from which she also received her Ph.D. in Immunology. She trained in internal medicine/rheumatology before completing her postdoctoral studies at the Mayo Clinic, Rochester, MN.

Aditya Kohli, Ph.D., is Chief Operating Officer at HilleVax. Aditya is a Venture Partner with Frazier Healthcare Partners, where he focuses on company creation. In addition to HilleVax, he has co-founded Scout Bio, Passage Bio (NASDAQ: PASG) and Phathom Pharmaceuticals (NASDAQ: PHAT). He is currently the Chief Business Officer at Phathom and serves on the board of Scout Bio.

Prior to Frazier, Aditya was a management consultant with McKinsey & Company, where he led engagements advising global biopharmaceutical companies on business development, research and development, and marketing and sales strategy.

Aditya received his Ph.D. from the UC Berkeley and UC San Francisco joint graduate program in bioengineering and holds B.S. and M.Eng. degrees in biological engineering from MIT.

David Socks is Chief Financial Officer and Chief Business Officer of HilleVax. David is a Venture Partner with Frazier Healthcare Partners, where he co-founded Arcutis (NASDAQ: ARQT), Passage Bio (NASDAQ: PASG) and Phathom Pharmaceuticals (NASDAQ: PHAT). At Phathom, he served as the founding CEO through the company’s IPO, then as CFO, and currently as strategic advisor and director. At Frazier, David also co-founded and served as CEO and/or executive chairman of multiple private companies. Prior to joining Frazier, he co-founded Incline Therapeutics where he served as the company’s President and COO until its sale to The Medicines Company. Previously, David was a Venture Partner at Windamere Venture Partners, where he co-founded multiple private and public companies including Cadence Pharmaceuticals (NASDAQ: CADX; acquired by Mallinckrodt) where he served as Senior Vice President of Corporate Development and Strategy. He has also worked in private equity and management consulting.

David holds a B.S. from Georgetown University and an M.B.A. from Stanford University.

Board of Directors

Dr. Shelley Chu joined Lightspeed Venture Partners as a Partner in 2020 to lead biotech investing. To date, her investments across all stages, from seed to growth, have led to seven New Drug Approvals (NDAs) by the FDA, nine drug candidates in active clinical development, and 16 exits through M&As, IPOs, or partnerships. During her time at Gilead, where Shelley led R&D strategy across all therapeutic areas and business development in immuno-oncology and HBV, three NDAs were approved and launched. She is a current or former member of the Board of Directors at Enlaza Therapeutics, Abata Therapeutics, 3T Biosciences, Medikine, Adanate, Scorpion Therapeutics, Tizona Therapeutics (acquired by Gilead Sciences), Trishula Therapeutics (partnered with AbbVie), SFJ Pharmaceuticals, Phathom Pharmaceuticals (NASDAQ: PHAT), IFM Therapeutics (acquired by Bristol Myers Squibb), IFM Tre (acquired by Novartis), IFM Due (partnered with Novartis), IFM Quattro, Q32, and Venatorx Pharmaceuticals. Shelley holds an MD and a PhD in Biochemistry and Biophysics from the University of California at San Francisco (UCSF) and a BA in Molecular Biology from Princeton University, where she serves as Co-Chair for Princeton ASC. She is also a member of the Scientific Advisory Board for BioCentury.

Dr. Julie Gerberding is Chief Patient Officer and Executive Vice President, Population Health & Sustainability at Merck. Formerly, she was President of Vaccines at Merck and subsequently oversaw global public policy and strategic communications for the company. Prior to Merck, Dr. Gerberding was Director of the United States CDC, where she led the agency through SARS and over 40 emergency responses to public health crises. She serves on the Boards of Cerner Corporation and MSD Wellcome Trust Hilleman Laboratories and co-chairs the CSIS Commission on Strengthening America’s Health Security. She is also an elected member of the National Academy of Medicine. Dr. Gerberding received her undergraduate and M.D. degrees from Case Western Reserve University and a Master of Public Health from the University of California, Berkeley. She completed her internship and residency in Internal Medicine and fellowship in Clinical Pharmacology and Infectious Diseases at the University of California, San Francisco, where she is currently an Adjunct Associate Professor of Medicine.

Patrick Heron is a Managing General Partner of Frazier Healthcare Partner’s Life Sciences team. He joined the firm in 1999 and opened Frazier’s Menlo Park office in 2003. Throughout his 14 years as a General Partner, Patrick has led or co-led investments across over 30 companies. Patrick has also been active in company formation around both early- and later-stage assets. He has led and served as director for many successful Frazier Life Sciences investments, including ARMO (acquired by Eli Lilly), Ignyta (acquired by Roche), Tobira Therapeutics (acquired by Allergan), Marcadia (acquired by Roche), Calixa (acquired by Cubist), Cerexa (acquired by Forest), PreCision Dermatology (acquired by Valeant), MedPointe (acquired by Meda), and Collegium (NASDAQ: COLL). He currently serves on the boards of Amunix, Arcutis (NASDAQ: ARQT), Imago BioSciences (NASDAQ: IMGO), Mirum Pharmaceuticals (NASDAQ: MIRM), ScoutBio, and SutroVax (NASDAQ: PCVX). Prior to joining Frazier, Patrick helped develop McKinsey & Company’s West Coast biotechnology consulting practice, where he led projects involving mergers and acquisitions, product launches, sales force optimization, corporate partnering, and research prioritization. Patrick received his MBA from Harvard Business School. He also holds a BA from the University of North Carolina at Chapel Hill, where he is a Phi Beta Kappa graduate and Morehead Scholar.

Dr. Rob Hershberg is Chief Executive Officer and Chairman of the board of directors of HilleVax. Rob is a Venture Partner with Frazier Healthcare Partners and has been working with Frazier and its portfolio companies as an Entrepreneur-in-Residence, Senior Advisor, and executive for 14 years. He was formerly President and Chief Executive Officer of VentiRx Pharmaceuticals, a Frazier-founded company developing a small molecule therapeutic to activate the immune system against solid tumors. Rob cofounded VentiRx while an entrepreneur-in-residence at Frazier and led the company through its transformational partnership with Celgene. He joined Celgene in 2014 to lead their efforts in Immuno-Oncology, was promoted to Executive Vice President and Chief Scientific Officer in 2016 and was subsequently Executive Vice President and Head of Business Development & Global Alliances and served as a member of the Executive Committee until the acquisition of Celgene by Bristol-Myers Squibb in 2019. Prior to VentiRx, Rob served as Senior Vice President and Chief Medical Officer of Dendreon Corporation and led clinical development of Provenge, which was approved for metastatic prostate cancer. Before Dendreon, he was Vice President of Medical Genetics at Corixa, a Frazier portfolio company which was acquired by GlaxoSmithKline. Earlier, Rob was an Assistant Professor at Harvard Medical School and an Associate Physician at Brigham and Women’s Hospital in Boston. Rob completed his undergraduate and medical degrees at the University of California, Los Angeles and received his PhD at the Salk Institute for Biological Studies.

Jeri Hilleman is the former Chief Financial Officer of multiple public life sciences companies, including Intersect ENT, Amyris and Symyx Technologies. Ms. Hilleman is currently Chair of the Board of Omada Health and director and audit chair of companies including Novocure, SI-Bone, and Talis Biomedical. She also previously served as a director and audit chair of Xenoport and Cardiva Medical through their acquisition. Ms. Hilleman holds an AB from Brown University and an MBA from the Wharton Graduate School of Business. She is a Henry Crown Fellow and a member of the Aspen Global Leadership Network at the Aspen Institute.

Dr. Jaime Sepulveda, the Haile T. Debas Distinguished Professor of Global Health, is the Executive Director of the UCSF Institute for Global Health Sciences. Prior to UCSF, he was a member of the Foundation Leadership Team at the Bill & Melinda Gates Foundation where he served as Director of Integrated Health Solutions, Director of Special Initiatives, and Senior Fellow in the Global Health Program. During this time, Dr. Sepulveda also served as executive committee Chair and board Vice Chair of Gavi, the Vaccine Alliance. Previously, he served in the government of Mexico as Director General of the National Institute of Public Health, Dean of the National School of Public Health, Director of the National Institutes of Health, and Vice Minister of Health. Dr. Sepulveda obtained two masters and a doctoral degree from Harvard University. He received the Harvard Alumni Award of Merit and was elected to serve at the Harvard Board of Overseers. He is also an elected member of the National Academy of Medicine and the American Academy of Arts and Sciences.

Susan Silbermann is the former Global President for Emerging Markets at Pfizer and Global President of Pfizer Vaccines. Throughout her 30-year career at Pfizer, Ms. Silbermann held numerous senior leadership positions in marketing, commercial and business development, and general management in the United States and multiple international markets. She has also served as a member of the board of Gavi, the Vaccine Alliance, Vice Chair of the President’s Advisory Council on Doing Business in Africa, and an advisor to Catalyst Inc., a nonprofit organization that promotes inclusive workplaces for women around the world. She is currently an advisor to the Malaria project at the TS Chan School of Public Health at Harvard and a member of the board of Meet the Writers, a non-profit organization that brings inspiring and diverse authors and illustrators to New York City Public Schools. Ms. Silbermann has bachelor’s degrees in biology and French from Tufts University and a joint MBA/MA degree in international business and French studies from the Stern Graduate School of Business and the Institute of French Studies at New York University.

Dr. Rajeev Venkayya is President of the Global Vaccine Business Unit at Takeda Pharmaceutical Company Ltd. He also serves as an independent member of the board of the Coalition for Epidemic Preparedness Innovations (CEPI) and the International AIDS Vaccine Initiative (IAVI) and is a life member of the Council on Foreign Relations. Prior to joining Takeda, Dr. Venkayya served as Director of Vaccine Delivery at the Bill & Melinda Gates Foundation’s Global Health Program and served on the board of Gavi, the Vaccine Alliance. Previously, he was the Special Assistant to the President for Biodefense at the White House. Dr. Venkayya trained in Pulmonary & Critical Care Medicine at the University of California, San Francisco, where he also served on the faculty. He was Chief Medical Resident in internal medicine at the University of Michigan and received his BS and MD from the Northeast Ohio Universities College of Medicine where he was inducted into the Alpha Omega Alpha honorary medical society.

Elise Wang is a Partner on the Public Structured Finance group at Deerfield and joined the Firm in 2010. Ms. Wang provides extensive research and analysis on individual companies operating in the healthcare industry in both the US and Europe. Ms. Wang is a board member of Jaguar Gene Therapy. Prior to Deerfield, Ms. Wang was a Senior Research Analyst and Managing Director covering the biotechnology sector at PaineWebber and Citigroup. She began her career in healthcare as a venture capitalist and banker at PaineWebber and was an officer of PaineWebber Development Corporation, which managed nearly $1 billion in assets representing three PaineWebber funds and several research and development limited partnerships (RDLPs) invested in biotechnology and high technology companies. Ms. Wang holds an AB in Engineering Sciences with a specialty in Biomechanics from Harvard University and an MBA from Harvard Business School.

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