Leadership

Frederick A. Ball is currently an Operating Partner at Lightspeed Venture Partners, a multi-stage venture capital firm. He previously served as Executive Vice President and Chief Administrative Officer of Marketo Inc. (formerly Nasdaq: MKTO), a leading provider of a cloud-based marketing platform, from February 2016 through August 2016. Prior to that, Mr. Ball was Marketo’s Senior Vice President and Chief Financial Officer from May 2011 to February 2016. Prior to joining Marketo, Mr. Ball was the Chief Financial Officer for several private and public technology companies, including Webroot Software, BigBand Networks, Inc., and Borland Software Corporation (formerly Nasdaq: BORL). Mr. Ball also served as Vice President, Mergers and Acquisitions for KLA-Tencor Corporation (now KLA Corp., Nasdaq: KLAC), a manufacturer of semiconductor equipment, and prior to that as its Vice President of Finance. Mr. Ball was with PricewaterhouseCoopers LLC for over 10 years. Mr. Ball previously served as a director of Electro Scientific Industries, Inc. (formerly Nasdaq: ESIO), Sendgrid, Inc. (formerly NYSE: SEND), and FirstMark Horizon Acquisition Corporation (formerly NYSE: FMAC). Mr. Ball has served and currently serves on other private company boards, including Alchemer, Axonius, Contentful, Intenseye, and Webgility.

Chair of the Compensation Committee
 

Grant H. Beard currently serves as a senior executive Operating Partner for Blue Point Capital, a private equity firm, and as a senior advisor to Center Rock Capital, a global alternative investment firm. Mr. Beard served as Chairman and Chief Executive Officer of Wynnchurch Industries, LLC, a diversified holding company investing in engineered product businesses, from January 2016 to June 2017. Mr. Beard also served as a Senior Advisor to Wynnchurch Capital Ltd. Prior to joining Wynnchurch, Mr. Beard served as the Chairman and Chief Executive Officer of Wolverine Advanced Materials LLC, a Wynnchurch company, from July 2012 until October 2015. Mr. Beard served as President and Chief Executive Officer of Constar International, Inc. from 2010 to 2012, where he led the financial and operational restructuring of Constar’s global packaging business that was later sold to Plastipak Corporation. Prior to that, Mr. Beard served as President & CEO of TriMas Corporation, Chairman & CEO of Health Media, and Global Group President of Fluid Management Products at Dana/Echlin Corporation. In addition, Mr. Beard served as a senior executive Operating Partner with Blue Point Capital from 2009 to 2014. Mr. Beard also has experience at two private equity/merchant banking groups, Anderson Group and Oxford Investment Group, where he was actively involved in corporate development, strategy and operations management.
 

Anne T. DelSanto currently serves as a Limited Partner at Operator Collective and Stage 2 Capital, both venture capital funds that invest in early-stage companies supporting entrepreneurial efforts aimed at next generation technology and software. From February 2018 to April 2019, Ms. DelSanto served as the Executive Vice President and General Manager of Platform at Salesforce, Inc. (NYSE: CRM), a customer relationship management company, following six years of other senior leadership roles at the company. Prior to Salesforce, Ms. DelSanto served as Group Vice President of Sales Engineering at Oracle Corp. (NYSE: ORCL), an information technology and services company. She began her career as an Account Systems Engineer with International Business Machines Corporation (NYSE: IBM), where she spent several years building solutions for the health care market. Ms. DelSanto previously served on the board of Juniper Networks, Inc. (NYSE: JNPR) from March 2019 until July 2025 and she currently serves on the boards of private companies Axonius, Hubbl Technologies, and StackAdapt. Ms. DelSanto graduated with a degree in mathematics from St. John’s University and earned a Master of Science in administrative studies from Boston College.

Member of the Compensation Committee
Member of the Nominating, Governance, and Sustainability Committee

Tina M. Donikowski retired from General Electric Company (NYSE: GE), a diversified industrial company, in October 2015 after 38 years with the company. Ms. Donikowski served in a number of senior positions during her career at General Electric Company, including most recently as Vice President, Global Locomotive Business, GE Transportation, from January 2013 until her retirement. Ms. Donikowski currently serves on the board of directors of TopBuild Corp. (NYSE: BLD), a leading installer and distributor of insulation and building material products to the U.S. construction industry based in Florida, and Eriez Magnetics, a privately held manufacturer and designer of magnetic, vibratory, and metal detection applications based in Pennsylvania. Ms. Donikowski previously served as a board member of Atlas Copco AB (Stockholm: ATCO), a world-leading provider of sustainable productivity solutions based in Sweden, and CIRCOR International (formerly NYSE: CIR), a leading provider of flow control solutions and other highly engineered products and subsystems used in energy, aerospace and industrial markets. Ms. Donikowski holds a Bachelor of Science degree in Industrial Engineering, as well as an Honorary Doctorate, from Gannon University.

Chair of the Nominating, Governance, and Sustainability Committee
Member of the Compensation Committee

Ronald C. Foster previously served as Chief Financial Officer and Vice President of Finance of Micron Technology, Inc. (Nasdaq: MU), a global corporation that produces various forms of semiconductor devices, from April 2008 to March 2015. Mr. Foster was appointed to that position in 2008 after serving as a member of Micron’s Board of Directors from June 2004 to April 2005. Before joining Micron, Mr. Foster was the Chief Financial Officer and Senior Vice President of FormFactor, Inc. (Nasdaq: FORM), a semiconductor wafer test equipment company. Prior to joining FormFactor, Mr. Foster served as the Chief Financial Officer for JDS Uniphase, Inc. and Novell, Inc., and served in various financial and operational roles at Applied Materials, Inc. (Nasdaq: AMAT), and Hewlett Packard Company (NYSE: HPE). He previously served as a board member of Everspin Technologies, Inc. (Nasdaq: MRAM), Inotera Memories Inc., a public company on the Taiwan stock exchange, LUXIM Corporation and Aptina Company.

Chair of the Audit and Finance Committee
 

Stephen D. Kelley currently serves as President & Chief Executive Officer of Advanced Energy, and as a member of our Board of Directors since March 2021. Mr. Kelley served as President & CEO and a board member of Amkor Technology, Inc. (Nasdaq: AMKR), a leading semiconductor package and test company, from May 2013 to June 2020. Prior to joining Amkor, Mr. Kelley served as Senior Advisor to Advanced Technology Investment Company, the Abu Dhabi-sponsored investment company that owns GlobalFoundries, until December 2012. Mr. Kelley served as Executive Vice President and Chief Operating Officer of Cree, Inc. (now Wolfspeed, Inc., NYSE: WOLF) from 2008 to 2011. Previously, Mr. Kelley held executive leadership roles of various businesses at companies including Texas Instruments, Philips Semiconductors, National Semiconductor, and Motorola. Since January 2023, Mr. Kelley has served on the board of directors of ONTO Innovation Inc. (NYSE: ONTO), a leader in the process control for the semiconductor and related industries. Mr. Kelley holds an SB ChE from the Massachusetts Institute of Technology and a JD from Santa Clara University.

Lanesha T. Minnix is Executive Vice President and General Counsel of Becton, Dickinson and Company (NYSE: BDX), a medical technology company, effective March 16, 2026. She previously served as Executive Vice President and Global Chief Legal Officer at Walgreens Boots Alliance, Inc. (Nasdaq: WBA), an integrated healthcare, pharmacy and retail company, from April 2024 to January 2026, where she was responsible for all legal, compliance, regulatory, and corporate security matters for the company. Prior to joining Walgreens, she served as Executive Vice President, General Counsel, and Corporate Secretary for Ecolab Inc. (NYSE: ECL), a global leader in water, hygiene, and infection prevention solutions that protect people, planet, and business health, from June 2022 to April 2024, and as Senior Vice President, Chief Legal Officer and Corporate Secretary of Flowserve Corporation (NYSE: FLS), a manufacturer of products for a range of industries, including oil and gas, power, chemical, water, pharmaceuticals, and food processing, from June 2018 to June 2022. She also previously served as Senior Vice President and General Counsel for BMC Stock Holdings, Inc., a leading provider of diversified building products and services, from June 2017 until June 2018. Earlier in her career, Ms. Minnix held roles with increasing responsibility at ABM Industries, Shell Oil Company, and Sprint Corporation. Ms. Minnix began her career as a Corporate Associate at the law firm of K&L Gates LLP. Ms. Minnix holds a juris doctor and an MBA from the University of Tulsa, and a bachelor’s degree in Marketing from St. Louis University.

Member of the Nominating, Governance, and Sustainability Committee
Member of the Audit and Finance Committee

David W. Reed served as the Chief Executive Officer of Vendanta Resources Ltd.’s semiconductor group from February 2023 to his retirement in March 2024. Prior to that, Mr. Reed retired from NXP Semiconductors N.V. (Nasdaq: NXPI), where he principally served as Executive Vice President – Operations. NXP is a world leader in secure connectivity solutions, and Mr. Reed was responsible for NXP’s internal and external manufacturing operations, supply chain, information technology, total quality, and procurement. Mr. Reed joined NXP in 2015, having served as General Manager at Freescale Semiconductor, Ltd. until its merger with NXP. Mr. Reed has 37 years of extensive international experience with global execution of water fab, assembly/test, packaging, R&D, foundries, and joint ventures for analog, automotive, logic, and wireless customers.  Mr. Reed joined Freescale Semiconductor in 2012 as Senior Vice President, Manufacturing Operations. Previously, Mr. Reed was Vice President and General Manager at GLOBALFOUNDRIES and began his career at Texas Instruments in 1984, where he held multiple overseas and leadership assignments. Mr. Reed has served on several private boards, including SSMC Foundry, a joint venture between NXP and TSMC, as its chairman.  Mr. Reed received an undergraduate degree from Austin College, an undergraduate degree in Chemical Engineering from Texas A&M University, and an MBA from the University of Dallas.

Member of the Audit and Finance Committee 

John A. Roush currently serves as Chief Executive Officer and a member of the board of directors Pine Environmental, LLC, a provider of test equipment solutions for the environmental and non-destructive test markets. Prior to joining Pine Environmental in May 2024, Mr. Roush was an Operating Executive Advisor to ACON Investments, LLC, a private equity firm, from January 2018 to May 2024, where he also served on the boards of several portfolio companies. Mr. Roush also serves as a director and member of the audit and compensation committees of Lemaitre Vascular, Inc. (Nasdaq: LMAT), a global provider of medical devices and implants for the treatment of peripheral vascular disease, and as a director of Targan, Inc. (formerly Applied Life Sciences & Systems), a privately held company that is developing automated vaccine delivery technology for the poultry industry. Mr. Roush previously served as Chief Financial Officer and Chairman of ACON S2 Acquisition Corp., a special purpose acquisition company (now ESS Tech, Inc., NYSE: GWH) from September 2020 to October 2021. He also previously served as Chief Executive Officer and a director of Novanta Inc. (Nasdaq: NOVT, formerly GSI Group Inc.), a leading global supplier of precision photonic components and subsystems to original equipment manufacturers in the medical and industrial technology markets, from December 2010 to September 2016. Mr. Roush joined Novanta after a twelve-year career with PerkinElmer, Inc., a provider of technology and services to the diagnostics, research, environmental, safety and security, industrial, and laboratory services markets, where he was a corporate officer and served in several leadership positions. Prior to joining PerkinElmer, Mr. Roush held management positions with Outboard Marine Corporation, AlliedSignal, Inc., (now Honeywell International), McKinsey & Company Inc., and General Electric Company (NYSE: GE).

Member of the Compensation Committee
Member of the Nominating, Governance, and Sustainability Committee

Brian M. Shirley retired from Micron Technology, Inc. (Nasdaq: MU), a global corporation that produces various forms of semiconductor devices, as Senior Vice President DRAM and Emerging Memory Engineering in December 2019. He joined Micron as a Product Engineer in 1988, and held positions of increasing responsibility across product design, engineering, and business unit management. Mr. Shirley is listed as an inventor on 82 U.S. patents and helped drive Micron’s expansion into specialized memory for servers, mobile and networking solutions, in addition to maintaining a focus on cost leadership and power reduction. After retirement from Micron, Mr. Shirley consults for various U.S. government departments through CTC Aero, LLC, a consulting firm, advising on the semiconductor geopolitical landscape, supply chain resilience, and national security. He also serves on the Board of Regents of the Potomac Institute and as an executive advisor to multiple early-stage companies. Mr. Shirley holds a Bachelor of Science degree in electrical engineering from Stanford University.

Member of the Audit and Finance Committee