Diodes Incorporated

Board of Directors

Keh-Shew Lu
Chairman and Chief Executive Officer
Member, Risk Oversight Committee

Dr. Lu was elected Chairman of the Board in May 2020 after serving on the Board since 2001, appointed Chief Executive Officer of the Company in June 2005, and served as President from June 2005 through 2023. From 2001 to 2005, he was a partner of the WK Technology Venture Fund. Prior to that, he served as Senior Vice President and General Manager of Worldwide Mixed-Signal and Logic Products of Texas Instruments (“TI”). His responsibilities included all aspects of the analog, mixed-signal, and logic products for the company’s worldwide business, including design, process, and product development, manufacturing, and marketing. He previously was manager of the worldwide memory business and served as the President of TI Asia. Dr. Lu is also a board member of Lite-On Technology Corporation, a publicly held company. He is also the founding Chairman of the Asian American Citizen’s Council.

Dr. Lu holds a bachelor’s degree in Electrical Engineering from National Cheng Kung University in Taiwan, and a master’s degree and a doctorate in Electrical Engineering from Texas Tech University. He has also been awarded an honorary doctorate in Engineering from National Cheng Kung University.

Having worked in the semiconductor industry for more than 40 years and, particularly, having served in various managerial and senior executive capacities at TI, Dr. Lu possesses a wealth of semiconductor management experience. Dr. Lu is also an experienced board leader and member, having served for many years on behalf of several public and private companies.

Angie Chen Button
Lead, Independent Director
Chair, Governance and Stockholder Relations Committee
Chair, Compensation Committee

Ms. Button has served as a representative in the State of Texas House of Representatives since 2009. The only Asian American Woman legislator in Texas, she currently chairs the International Relations and Economic Development Committee, and has previously served as Chair of the Urban Affairs Committee, as Chair of the Economic and Small Business Development Committee, as Vice Chair of the Technology Committee, sat on the Appropriations (Budget) Committee, and has sat and currently serves on the Ways and Means (Taxation) Committee. A CPA, Ms. Button worked for Texas Instruments for over 30 years in various auditing, finance, business development, procurement, and international marketing positions. She also served on the Audit Committee of the Dallas Area Rapid Transit Board. Texas Monthly named Ms. Button as a “Top 10 Best Legislator” in 2021 and 2023; the Texas Healthcare & Bioscience Institute awarded her its “Luminary Award” in 2023; and the Texas Association for the Education of Young Children awarded her as its “Elected Official of the Year” in 2021. As a state representative, she brings experience and connections in dealing with government officials and business leaders, including promoting international business and trade. Ms. Button provides the Board with semiconductor industry experience, leadership skills, as well as state and national governmental knowledge. 

Ms. Button received her bachelor’s degree in Accounting from National Taiwan University in 1976, her master’s degree in Public Finance from National Chengchi University in 1978, and her master’s degree in Management Science from University of Texas at Dallas in 1980. Ms. Button is a co-founder of the DFW Asian American Citizens Council.

Ms. Button is not related to Mr. Warren Chen.

Elizabeth (Beth) Bull
Independent Director
Chair, Audit Committee (Audit Committee Financial Expert)
Member, Governance and Stockholder Relations Committee

Ms. Bull is the former Chief Financial Officer of Communities Foundation of Texas ("CFT"). CFT is a Dallas-based non-profit grant-making organization and is one of the largest community foundations in the nation, with more than $1.5 billion in assets. In her role as CFO, Ms. Bull held full budget accountability, reporting to the CEO and Board/Committees. She served as Staff Lead on Finance & Audit, Investment, Compensation, Governance, and Building Committees for the CFT Board of Trustees, partnering for organizational growth.

Prior to CFT, Ms. Bull was Vice President and Treasurer of Texas Instruments, where she was employed for over 25 years. In her role as Vice President and Treasurer she led strategic financial, investment, operational, and people development initiatives in progressive roles, working in multiple locations in Texas and in Asia across eight countries. She was TI's first female Vice President in Finance, Treasury, and Asia regional roles and worked with billion dollar and smaller entities/organizations in multiple capacities.

Ms. Bull received her MBA from the Kellogg School of Management at Northwestern University and her bachelor's degree in Mathematics from DePauw University. She is a member of the North Texas chapter of the National Association of Corporate Directors, and she recently completed Harvard Business School’s Executive Education program on “Audit Committees in the New Era of Governance.”


Warren Chen
Independent Director
Chair, Risk Oversight Committee
Member, Compensation Committee
Member, Governance and Stockholder Relations Committee

Mr. Chen was a member of the Board of Lite-On Technology Corp. (“LTC”) from 2002 to 2022 and was promoted to President of the Lite-On Group in 2010. He was named Vice Chairman and Group CEO of LTC since 2014 and stepped down on July 31, 2020. He joined the Lite-On Group in 1983 and has served in positions of increasing responsibility, including as Group Deputy CEO and Core Investment CEO from 2006 to 2010, Deputy CEO of LTC from 2000 to 2006, President of Taiwan Lite-On Electronics Inc. from 1992 to 2000, Senior Vice President of Lite-On Inc. and Production Manager of Compound Semi, Inc. (CA). Prior to joining the Lite-On Group, from 1975 to 1983, Mr. Chen served as manufacturing superintendent for TI Taiwan. Mr. Chen holds a bachelor’s degree in Chemical Engineering from Chinese Culture University. Lite-On Semiconductor Corp. was a company in the Lite-On Group. See “Certain Relationships and Related Person Transactions – Relationships and Transactions.”

Mr. Chen’s approximately 45 years of management experience in the electronics industry and the global supply chain provides the Board with perspective on the future trends and challenges in the semiconductor industry.

Mr. Chen is not related to Ms. Angie Chen Button.

Michael R. Giordano
Independent Director
Member, Audit Committee (Audit Committee Financial Expert)

Mr. Giordano, CIMA, retired October 6, 2021 as Associate Director, Senior Wealth Strategy Associate at the private-banking firm of UBS Financial Services, Inc., having previously served as Senior Vice President-Investment Consulting from when UBS AG acquired PaineWebber, Inc. in 2000 until 2017. PaineWebber, Inc. had acquired his previous employer, Kidder Peabody and Co., Inc., by whom he was employed since 1979. Mr. Giordano advised corporations, foundations, trusts, and municipal governments in investments and finance. Mr. Giordano served as a board member of Rosalind Inc., a private San Diego genomic analysis company, from July 2017 to 2023. He served as board advisor to MetaMedia Technology, an entertainment distribution company, from December 2020 to December 2021. He served as Chairman of the Board and the Chief Executive Officer of the Leo D. Fields Co. from 1980 to 1990, when GWC Holdings acquired it. From 2001 to 2003, he served as a board member of Professional Business Bank, a publicly traded corporation. Formerly a Captain and pilot in the United States Air Force, Mr. Giordano received his bachelor’s degree in Aerospace Engineering from California State Polytechnic University and his master’s degree in Business Administration from the University of Utah. Mr. Giordano also completed post-graduate work in International Investments at Babson College and is certified by the Investment Management Consultants Association. He is also certified by the John E. Anderson Graduate School of Management, University of California at Los Angeles as a Corporate Director, having demonstrated understanding of directorship and corporate governance.

Mr. Giordano is an experienced leader who has worked in the financial sector for more than 42 years and possesses the skills necessary to serve on the Company’s Audit Committee. Having been with UBS Financial Services, Inc. (and its predecessors) since 1979, he has advised numerous public, private, profit, and non-profit organizations in investments and finance. Mr. Giordano’s experience provides the Board with knowledge in financial and accounting matters.

Peter M. Menard
Independent Director

Mr. Menard practiced securities law from 1979 until 2018. From 1998 until his retirement in 2018, Mr. Menard was a partner with the international law firm of Sheppard, Mullin, Richter & Hampton, LLP where his principal areas of practice were corporate governance, securities law compliance, and corporate transactions. He has been a member of the Executive Committee of the Business Law Section of the California Lawyers Association (“BLS”), a Chair of the Corporations Committee of the BLS, Chair of the Business & Corporations Section of the Los Angeles County Bar Association, and an adjunct professor at University of Southern California Gould School of Law where he taught a course in securities regulation. Mr. Menard is a member of the Board of Directors, and a member of the Governance Committee and the Chair of the Audit Committee of Huntington Medical Research Institutes. He received a bachelor’s degree in Mathematics from Santa Clara University in 1974 and a master’s degree in Mathematics in 1976 and J.D. in 1979 from the University of Michigan.

Mr. Menard has 40 years of experience representing publicly traded companies. He brings extensive experience in corporate governance, securities law compliance, corporate social responsibility, shareholder engagement, financial reporting, and executive compensation. He has served of the Board of Directors of multiple nonprofit entities.

Christina Wen-Chi Sung
Independent Director
Member, Audit Committee
Member, Compensation Committee
Member, Risk Oversight Committee

Ms. Sung served as the Chairman of the Taipei Financial Center Corporation, the management company for Taipei 101, the world’s tallest green building, from 2012 to 2015. She previously served as a Director for Arcadyan Technology Corporation from 2012 to 2014 and Independent Director for Lite-On IT Corporation from 2009 to 2013. She was also the head of the HSBC Asset Management Group (Taiwan) from 2004 to 2006 and the co-CEO of JP Morgan Chase (Taiwan) in 2003. Ms. Sung has over 20 years of experience working in the financial investment industry in Taiwan, during which she has earned numerous accolades, including: inclusion in the 2019 Most Influential Corporate Directors list by WomenInc. Magazine, the 2003 Most Influential Business Woman of the Year by Taiwan Commonwealth Magazine, the 2002 Montblanc Business Woman of the Year, the 1998 Best CEO of the Securities Industry in Taiwan by the Securities and Futures Development Foundation Golden Goblet Awards, and 1998 Outstanding Business Woman in Taiwan by the Chinese Business Woman’s Association.

Ms. Sung brings extensive directorship and business experience to the Board, and she continues to serve on multiple nonprofit boards, including as a director of Feng Chia University. After retiring from Taipei 101, she founded Social Welfare and Social Enterprise Revolving Trust (“SERT”) at the end of 2015, which is aimed at providing financial support and management to non-profit organizations and social enterprises in Taiwan. SERT has been awarded by the government for two consecutive years for its special contribution to the related sector. Ms. Sung received her bachelor’s degree in English language and literature from Soochow University in 1976 and her master’s degree in Executive Management of Business Administration from National Cheng-chi University in 2003.

Gary Yu
President and Director
Member, Risk Oversight Committee

Mr. Yu, who has been with the Company since 2008, was appointed President and elected to the Board of Directors in January 2024. Prior roles in the Company include Chief Operating Officer; Senior Vice President with responsibility for Business Groups and the integration of Lite-On Semiconductor Corporation; President, Asia Pacific Region; General Manager of the Company’s Shanghai wafer fabrication operation and the Company's BCD business unit; Vice President of Asia Pacific Sales; and manager of the Company’s sensor and satellite business unit. Prior to joining the Company, Mr. Yu spent over 10 years at Lite-On Semiconductor Corporation as Vice President, Worldwide Sales and at Texas Instruments in IT, finance, and capacity planning positions. Mr. Yu holds a bachelor’s degree in MIS from Fu-Jen University, Taiwan, a master’s degree in Telecommunication Engineering from Southern Methodist University, and an MBA from University of Dallas.