Jeff Tong, Ph.D.

Jeffrey Tong, Ph.D., has served as a member of our board of directors since February 2018. Dr. Tong is currently a Partner at Third Rock Ventures, a venture capital firm, where he has worked since May 2016. Prior to joining Third Rock, Dr. Tong served as Executive Chairman of the Board of Delinia, Inc. (acquired by Celgene Corporation in 2017), a biotechnology company focused on autoimmune diseases. Dr. Tong served as President and Chief Executive Officer of Nora Therapeutics Inc. from 2010 to 2015 and was a member of the executive team of Infinity Pharmaceuticals, Inc. from 2001 to 2010. Dr. Tong currently serves as a member of the board of directors of several private companies. Dr. Tong holds an A.B. in Biochemistry from Harvard College, an M.M.S from Harvard Medical School, and an A.M. and Ph.D. in Chemistry from Harvard University.

Paul M. Silva

Paul M. Silva has served as a member of our board of directors since October 2021. Mr. Silva is a biotechnology leader with more than 30 years of finance and operational experience. He served as senior vice president, chief accounting officer, at Vertex Pharmaceuticals Incorporated, a global biotechnology company, from April 2011 until his retirement in April 2021, and also served as the company’s interim chief financial officer from January 2019 to April 2019.  Mr. Silva joined Vertex in August 2007 and was the company’s vice president and corporate controller from September 2008 through April 2011.  Prior to Vertex, he held positions at Iron Mountain Incorporated and Thermo Electron Corporation.  Mr. Silva holds a B.S. in accounting from Assumption College.

Clay Siegall, Ph.D.

Dr. Siegall has served as a member of our board of directors since May 2021. Dr. Siegall currently serves as President, Chief Executive Officer, and Chairman of the Board of Seagen Inc. (formerly Seattle Genetics, Inc.). Dr. Siegall co-founded Seagen in 1998. Prior to co-founding Seagen, Dr. Siegall worked for the Bristol-Myers Squibb Pharmaceutical Research Institute from 1991 to 1997, most recently as a Principal Scientist. From 1988 to 1991, Dr. Siegall was a Staff Fellow/Biotechnology Fellow at the National Cancer Institute, National Institutes of Health. In addition to Seagen, Dr. Siegall served as a director of Ultragenyx Pharmaceuticals, Inc. from January 2014 to June 2021. Dr. Siegall also served as a director of Alder BioPharmaceuticals, Inc. from November 2005 to October 2019 and as a director of Mirna Therapeutics, Inc. from January 2013 to December 2016. Dr. Siegall received a B.S. in Zoology from the University of Maryland and a Ph.D. in Genetics from George Washington University. 

Judith A. Reinsdorf, J.D.

Judy Reinsdorf has served as a member of our board of directors since October 2021. Ms. Reinsdorf has extensive experience in executive roles across multiple industries.  She most recently served as executive vice president and general counsel of Johnson Controls International, a global leader in building products and technology and integrated solutions, from September 2016 to November 2017, following its merger with Tyco International, where she served as executive vice president and general counsel from March 2007 until September 2016.  She currently serves on the board of directors of Cornerstone Building Brands, Inc. and EnPro Industries, Inc., and on the advisory board of Teach for America – New Jersey and the NACD New Jersey Chapter.  Previously, Ms. Reinsdorf served on the boards of Alexion Pharmaceuticals, Inc. until its acquisition by Astra Zeneca in 2021 and The Dun & Bradstreet Corporation from 2013 until 2019 when it was taken private.  She began her career in 1989 as an associate at Crowell & Moring and held various legal counsel positions at Monsanto, Pharmacia and C.R. Bard.  Ms. Reinsdorf holds a B.A. from the University of Rochester and a J.D. from Cornell Law School.

Lori A. Kunkel, M.D.

Lori A. Kunkel, M.D., has served as a member of our board of directors since July 2019. Dr. Kunkel is a biotechnology consultant at LAK505, LLC (previously D2D, LLC), where she advises on drug development, strategy, and commercialization, a position she has held since 2004. Dr. Kunkel served as Chief Medical Officer of Pharmacyclics LLC from 2011 to 2013 and of Proteolix, Inc. from 2007 to 2009. From 2005 to 2007, Dr. Kunkel served as Vice President of Clinical Development of Xencor, Inc. Dr. Kunkel currently serves on the board of directors of Curis, Inc., Maverick Therapeutics, Inc., and Oric Pharmaceuticals, Inc. and served as a director of Loxo Oncology, Inc. from October 2014 until February 2019 and Tocagen 2015 to 2020. Dr. Kunkel also serves as a scientific advisor to a number of public and private biotechnology companies. Dr. Kunkel received a B.A. in Biology from University of California, San Diego and an M.D. from the University of Southern California.

Julia P. Gregory

Julia P. Gregory has served as a member of our board of directors since August 2019. Ms. Gregory is currently Chair and Chief Executive Officer of Isometry Advisors, Inc., a biotechnology financial, strategy, and management advisory firm and Managing Director at M.M. Dillon & Co., Inc., a healthcare and technology focused investment bank. Ms. Gregory formerly served as Chief Executive Officer at ContraFect Corporation, a biotechnology company focused on therapeutics for drug resistant infectious diseases, from November 2013 through March 2016, and as a member of its board of directors from April 2014 through March 2016. Prior to her appointment as Chief Executive Officer, Ms. Gregory served as ContraFect’s Executive Vice President and Chief Financial Officer from July 2012 to November 2013. From 2009 to August 2011, Ms. Gregory served as President, Chief Executive Officer, and Director of Five Prime Therapeutics, Inc., and from 2000 to 2008 she served as Executive Vice President, Corporate Development and Chief Financial Officer of Lexicon Pharmaceuticals, Inc. In addition, Ms. Gregory has twenty years of investment banking experience, including at Dillon, Read & Co. and at Punk, Ziegel & Company, where she served as the head of investment banking and head of its life sciences practice. Ms. Gregory currently serves on the board of directors of Biohaven Pharmaceutical Holding Company, Ltd., Freeline Therapeutics, Ltd., and IMV Inc. as well as on the board of directors of a number of private companies. Ms. Gregory holds a B.A. from George Washington University and an M.B.A. from the Wharton School of the University of Pennsylvania

David Lacey, M.D.

David Lacey, M.D., has served as Chairman of our board of directors since August 2019, and as a member of our board of directors since April 2016. Dr. Lacey is a biopharmaceutical consultant at David L. Lacey LLC, where he advises academic institutions, biotechnology companies, and venture capital firms, a position he has held since July 2011. Dr. Lacey currently serves on the board of directors of Arcus Biosciences, Inc., Argenx SE, Atreca, Inc., and Inbiomotion SL. From 1994 until his retirement in 2011, Dr. Lacey held various positions, including Senior Vice President of Discovery Research, at Amgen Inc. Dr. Lacey holds a B.A. in Biology from the University of Colorado, Denver and an M.D. from the University of Colorado School of Medicine.

Arthur T. Sands, M.D., Ph.D.

Arthur T. Sands, M.D., Ph.D., has served as President of Nurix since June 2020, and as Chief Executive Officer and a member of the company’s board of directors since September 2014. Prior to joining Nurix, Dr. Sands was the co-founder and served as President, Chief Executive Officer, and as a member of the board of directors of Lexicon Pharmaceuticals, Inc., a biopharmaceutical company focused on target validation and pharmaceutical development, from 1995 to July 2014. Before founding Lexicon Pharmaceuticals, Dr. Sands served as an American Cancer Society postdoctoral fellow in the Department of Human and Molecular Genetics at Baylor College of Medicine. Dr. Sands holds a B.A. in Economics and Political Science from Yale University and an M.D. and a Ph.D. in Cell Biology from Baylor College of Medicine.