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John L. Hennessy has served as Chair of our Board since January 2018. John previously served as our Lead Independent Director from April 2007 to January 2018. John is the James F. and Mary Lynn Gibbons Professor of Computer Science and Electrical Engineering in the Stanford School of Engineering, and the Shriram Family Director of Stanford's Knight-Hennessy Scholars, a graduate-level scholarship program. John served as the President of Stanford University from September 2000 to August 2016. From 1994 to August 2000, John held various positions at Stanford, including Dean of the Stanford University School of Engineering and Chair of the Stanford University Department of Computer Science. John is the recipient of numerous honors, including the Medal of Honor of the Institute of Electrical and Electronics Engineers, and the ACM A.M. Turing Award. John holds a Bachelor of Science degree in electrical engineering from Villanova University and a Master of Science degree and a Doctoral degree in computer science from the State University of New York, Stony Brook. Selected Memberships: Board of Trustees, Gordon and Betty Moore Foundation. Trustee, Queen Elizabeth Prize for Engineering Foundation.

Roger W. Ferguson Jr has been the Chief Investment Officer of Red Cell Partners LLC, a venture capital firm, since August 2022, and a member of the McKinsey & Company External Advisory Group since February 2023. Since May 2021, he is also the Steven A. Tananbaum Distinguished Fellow for International Economics at the Council on Foreign Relations. Roger has served as the President and Chief Executive Officer of TIAA, a major financial services company, from April 2008 to May 2021. He joined TIAA after his tenure at Swiss Re, a global reinsurance company, where he served as Chairman of the firm's America Holding Corporation, Head of Financial Services, and a member of the Executive Committee from 2006 to 2008. Prior to that, Roger joined the Board of Governors of the U.S. Federal Reserve System in 1997 and served as its Vice Chairman from 1999 to 2006. From 1984 to 1997, he was an associate and partner at McKinsey & Company. Roger holds a Bachelor of Arts degree in economics, a Doctoral degree in economics, and a Juris Doctor degree, all from Harvard University. Other Public Company Directorships: Corning. International Flavors & Fragrances, Inc. Selected Memberships: Board of Regents, The Smithsonian Institution. Co-Chair, Commission on the Future of Undergraduate Education, American Academy of Arts and Sciences. Board of Trustees, The Group of Thirty. Former Public Company Directorships in the Past Five Years: Blend Labs, Inc. General Mills, Inc.

L. John Doerr has been the Chair of Kleiner Perkins, a venture capital firm, since March 2016. Before assuming the role of Chair, John served as General Partner of Kleiner Perkins since August 1980. John holds a Bachelor of Science degree in electrical engineering and a Master of Science degree in electrical engineering from Rice University, and a Master of Business Administration degree from Harvard Business School. He is the author of Measure What Matters and Speed & Scale. Other Public Company Directorship: DoorDash, Inc. Selected Memberships: Board of Directors, Climate Imperative Foundation Advisory Council, Stanford Doerr School of Sustainability.

K. Ram Shriram has been a managing partner of Sherpalo Ventures, LLC, an angel venture investment company, since January 2000. From August 1998 to September 1999, Ram served as Vice President of Business Development at Amazon. com, Inc., an internet retail company. Prior to that, Ram served as President at Junglee Corporation, a provider of database technology, which was acquired by Amazon.com in 1998. Ram was an early member of the executive team at Netscape Communications Corporation. Ram holds a Bachelor of Science degree in mathematics from the University of Madras, India. Other Public Company Directorship: Yubico (Nasdaq First North Growth Market, Stockholm: YUBICO). Selected Memberships: Member, Council on Foreign Relations. Board of Trustees, Stanford Health Care. Charter Member, Indiaspora.

Robin L. Washington served as the Executive Vice President and Chief Financial Officer of Gilead Sciences, Inc., a biopharmaceutical company, from May 2008 until her retirement in November 2019, where she oversaw Global Finance, Facilities and Operations, Investor Relations, and the Information Technology organizations. Robin remained with Gilead in an advisory capacity from November 2019 until March 2020. From January 2006 to June 2007, Robin served as Chief Financial Officer of Hyperion Solutions Corporation, an enterprise software company. Prior to Hyperion, Robin served in a number of executive positions with PeopleSoft, Inc., a provider of enterprise application software, including as Senior Vice President and Corporate Controller along with several other senior financial roles from 1996 to 2005. Prior to PeopleSoft, Robin was Director of Finance for Tandem Computers, an Accounting Analyst for the Federal Reserve Bank of Chicago, and a Senior Auditor for Deloitte. Robin holds a Bachelor of Business Administration degree from the University of Michigan and a Master of Business Administration degree from Pepperdine University. Other Public Company Directorships: Honeywell International, Inc. Salesforce, Inc. Vertiv Holdings Co. Selected Memberships and Private Directorships: President's Council & Ross Business School Advisory Board, University of Michigan. Board of Directors, Mastercard Foundation. Board of Trustees, Financial Accounting Foundation.

Frances H. Arnold manages a research group, is the Linus Pauling Professor of Chemical Engineering, Bioengineering and Biochemistry, and is the Director of the Donna and Benjamin M. Rosen Bioengineering Center, all at the California Institute of Technology. She joined the California Institute of Technology in 1986 and has served as a Visiting Associate, Assistant Professor, Professor, and Director. Frances's laboratory focuses on protein engineering by directed evolution, with applications in alternative energy, chemicals, and medicine. Frances is the recipient of numerous honors, including the Nobel Prize in Chemistry, the Millennium Technology Prize, induction into the National Inventors Hall of Fame, Fellow of the National Academy of Inventors, the ENI Prize in Renewable and Nonconventional Energy, the U.S. National Medal of Technology and Innovation, and the Charles Stark Draper Prize of the U.S. National Academy of Engineering. Frances holds a Bachelor of Science degree in mechanical and aerospace engineering from Princeton University and a Doctoral degree in chemical engineering from the University of California, Berkeley. Other Public Company Directorship: Illumina, Inc. Selected Memberships: Co-Chair, President's Council of Advisors on Science and Technology. Member, U.S. National Academies of Science, Medicine, and Engineering. Member, The American Academy of Arts and Sciences.

R. Martin Marty Chavez has been a Partner and Vice Chairman of Sixth Street, a global asset manager, since May 2021. From January 2005 until his retirement in December 2019, he served in a number of executive positions at Goldman Sachs, including Chief Information Officer, Chief Financial Officer, and global co-head of the firm's Securities Division, and was a partner and a member of Goldman Sachs' management committee. Previously, Marty was a Chief Executive Officer and co- founder of Kiodex, which was acquired by Sungard in 2004, and Chief Technology Officer and co-founder of Quorum Software Systems. Marty holds a Bachelor of Arts degree in biochemical sciences and a Master of Science degree in computer science from Harvard University, and a Doctoral degree in medical information sciences from Stanford University. Other Public Company Directorship: Recursion Pharmaceuticals, Inc. Selected Memberships: Board of Fellows, Stanford Medicine Board. Board of Directors, The Broad Institute of MIT.

Larry Page one of Google's Co-Founders, previously served as Google's Chief Executive Officer from April 2011 to October 2015, and as Alphabet's Chief Executive Officer from October 2015 to December 2019. From July 2001 to April 2011, Larry served as Google's President, Products. In addition, from September 1998 to July 2001, Larry served as Google's Chief Executive Officer, and from September 1998 to July 2002, as Google's Chief Financial Officer. Larry holds a Bachelor of Science degree in engineering, with a concentration in computer engineering, from the University of Michigan and a Master of Science degree in computer science from Stanford University. Selected Membership: The Carl Victor Page Memorial Foundation.

Sergey Brin one of Google's Co-Founders, previously served as Google's President from May 2011 to October 2015, and as Alphabet's President from October 2015 to December 2019. From July 2001 to April 2011, Sergey served as Google's President, Technology and Co-Founder. In addition, from September 1998 to July 2001, Sergey served as Google's President and Chairman of Google's Board of Directors. Sergey holds a Bachelor of Science degree with high honors in mathematics and computer science from the University of Maryland at College Park and a Master of Science degree in computer science from Stanford University. Selected Membership: The Sergey Brin Family Foundation.