Ronald D. Sugar is the retired Chairman of the Board and Chief Executive Officer of Northrop Grumman Corporation, a global aerospace and defense company, having held these posts from 2003 through 2009.

Dr. Sugar has been a director of Apple Inc., a manufacturer and seller of, among other things, personal computers, mobile communication and media devices, since 2010, chairing the Audit and Finance Committee. Dr. Sugar has been a director of Uber Technologies, Inc., a personal mobility, meal delivery and logistics technology platform, since 2018, serving as the Chair of the board of directors and chairing the Nominating and Governance Committee and serving on the Compensation Committee.

Dr. Sugar served as a director of Chevron Corporation, a petroleum, exploration, production and refining company, from 2005 until 2023, serving on the Management Compensation Committee and the Board Nominating and Governance Committee. and as lead independent director from 2015 to May 2022. Dr. Sugar served as a director of Air Lease Corporation, an aircraft leasing company, from 2010 to 2020, and chaired its Compensation Committee and served on the Nominating and Corporate Governance Committee. Since 2010, he has been a senior advisor to Ares Management LLC, a privately-held asset manager and registered investment advisor. In 2014, Dr. Sugar joined the Temasek Americas Advisory Panel of Temasek Holdings (Private) Limited, a privately-held investment company based in Singapore. Dr. Sugar is a member of the National Academy of Engineering, trustee of the University of Southern California, member of the UCLA Anderson School of Management Board of Advisors, and director of the Los Angeles Philharmonic Association. Dr. Sugar received an undergraduate degree, master's degree, and doctorate from the University of California, Los Angeles.