Board of Directors

Mr. Heinzmann, has served as our President and Chief Executive Officer and a member of the Board since January 2017. He previously served as our Chief Operating Officer from 2014 to 2017. Mr. Heinzmann began his career at Littelfuse in 1985 as a manufacturing engineer and since then has held positions of increasing responsibility. From 2004 through 2007, he served as Vice President and General Manager, Automotive segment, and then as Vice President, Global Operations until 2014. Mr. Heinzmann has served as a director of Gentherm Inc. (NASDAQ:THRM) since August 2020. He previously served on the board of directors of Pulse Electronics Corporation from 2014 until its acquisition by Yageo Corporation in May 2018. Mr. Heinzmann holds a bachelor's degree in mechanical engineering from Missouri University of Science and Technology.

Ms. Cerniglia has served as Chief Executive Officer for Briggs & Stratton, a global producer of engines for outdoor power equipment, and a designer, manufacturer and marketer of lithium-ion battery, standby generator, energy storage system, lawn and garden, turf care and job site products since July 2024. Prior to that, she served as interim CEO from February 2024 and as Senior Vice President and Chief Financial Officer for the two years prior. Before joining Briggs & Straton, Ms. Cerniglia was Senior Vice President and Chief Financial Officer for Hillenbrand, Inc. (NYSE:HI), a global diversified industrial company with multiple market-leading brands that serve a wide variety of industries across the globe, from 2014 to April 2022. Ms. Cerniglia served as Vice President and Corporate Controller and in various other capacities at Stanley Black & Decker, a global provider of power and hand tools, mechanical access solutions and electronic monitoring systems from 1997 to 2014. Ms. Cerniglia holds a bachelor's degree in finance from Bentley College.

Mr. Chung has served as a Founding Senior Partner of Core Industrial Partners LLC, a private equity firm investing in lower to middle market manufacturing companies in North America, since 2017. From 2013 to May 2016, Mr. Chung served as president and chief executive officer of Navman Wireless and Teletrac Inc., a global market leader in GPS-based fleet management solutions. From 2007 to December 2012, Mr. Chung was chief executive officer of Navman Wireless. Previously, Mr. Chung served as president of the New Technologies Division of Brunswick Corporation (NYSE:BC) from 2002 to 2007. Mr. Chung has served on the board of directors of Mastercraft Boat Holdings, Inc. (NASDAQ:MCFT) from December 2016 through October 2022, Fathom Digital Manufacturing Corporation (NYSE: FATH) from December 2021 until its merger in May 2024, and has served on the board of directors of Airgain, Inc. (NASDAQ:AIRG) since October 2018. Mr. Chung holds a bachelor's degree in science, electrical and computer engineering from the University of Texas - Austin, an MS in computer science from North Carolina State University and an MBA from the Fuqua School of Business at Duke University.

Ms. Delly, served as Chief Executive Officer of Benchmark Electronics, Inc. (BYSE: BHE), a solutions provider for high technology OEM customers, from 2012 until her retirement in 2016, and served on the board of directors of Benchmark from 2011 to 2016. She previously held several leadership positions at Benchmark, including President from 2006-2011, Executive Vice President and Chief Financial Officer from 2001 to 2006, and Corporate Controller and Treasurer from 1995 to 2001. Ms. Delly is a certified public accountant and was a Senior Audit Manager at KPMG before joining Benchmark.  Ms. Delly has served on the board of directors of National Instruments Corporation (NASDAQ: NATI) since 2020, Broadcom Inc. (NASDAQ: AVGO) since 2017, and Flowserve Corporation (NYSE: FLS) since 2008. Ms. Delly holds a bachelor’s degree in accounting from Samford University.

Ms. Green served as the Senior Vice President and General Counsel of Ingersoll-Rand plc (NYSE:IR), a diversified manufacturing company, from 2015 until her retirement in June 2019. Prior to that, she served in various capacities at Illinois Tool Works (NYSE:ITW), a producer of engineered fasteners and components, equipment and consumable systems and specialty products, most recently as Senior Vice President, General Counsel and Secretary, from 1997 to 2015. Ms. Green has served on the boards of directors of Tennant Company (NYSE:TNC) since March 2019, WEC Energy Group (NYSE:WEC) since July 2019 and Fathom Digital Manufacturing Corporation from July 2021 until its merger in May 2024. Ms. Green holds a bachelor's degree in sociology/economics from the University of Pennsylvania and Juris Doctorate from Boston University School of Law.

Mr. Grillo was one of the founders of the American Securities opportunity funds established in 2005. Mr. Grillo served as Managing Director of the American Securities opportunity funds until his retirement in 2018. From 2001 through 2004, Mr. Grillo served as Senior Managing Director of Evercore Partners, Inc. (NYSE:EVR), an investment banking boutique providing advisory services to multinational corporations on significant mergers, acquisitions, divestitures, restructurings and other strategic corporate transactions, where he founded the restructuring practice for the firm. From 1999 through 2001, Mr. Grillo served as Senior Managing Director of Joseph Littlejohn & Levy, Inc., a private equity firm. From 1991 through 1999, Mr. Grillo was a Senior Managing Director of the Blackstone Group L.P. (NYSE:BX). Mr. Grillo has served on the board of directors of several closed end funds advised by Franklin Templeton Fund Adviser, LLC since November 2024. He previously served on the board of directors of Oaktree Acquisition Corp. II (NYSE:OACB) from September 2020 until its merger with Alvotech Holdings S.A. in June 2022, and Oaktree Acquisition Corp. (NYSE:OAC) from June 2019 until its merger with Hims & Hers Health, Inc. in January 2021. Mr. Grillo holds a bachelor's degree in economics from Rutgers University and an MBA from Wharton Business School.

Mr. Henderson, served as Senior Vice President of the Automotive & Energy, Communications, and Aerospace Group for Analog Devices, Inc. (NASDAQ: ADI), a semiconductor company specializing in data conversion, signal processing and power management technology from 2017 to 2024. Prior to this, Mr. Henderson served as the Vice President RF and Microwave Business for Analog Devices from 2014 to 2017, and as the Vice President RF and Microwave Business for Hittite Microwave Corporation until its acquisition by Analog Devices in 2014. Before coming to Hittite, Mr. Henderson held various positions of increasing technical and leadership responsibility at Harris Corporation, Tyco Electronics, TriQuint Semiconductor and IBM (NYSE: IBM). Mr. Henderson holds a bachelor’s degree in electrical engineering from Texas Tech University and a Ph.D. in electrical engineering from the Georgia Institute of Technology.

Mr. Hunter has served as the Chairman of the Board since January 2018. He previously served as Executive Chairman of the Board from January 2017 through December 2017. Prior to that, Mr. Hunter served as a director from 2002 to 2003, served as Chief Operating Officer from 2003 to 2005, and served as our Chairman of the Board, President and Chief Executive Officer from 2005 until January 2017. Prior to joining Littelfuse, Mr. Hunter served as vice president, Intel communications group, and general manager, optical products group for Intel Corporation (NASDAQ:INTC) from 2002 to 2003. Prior to joining Intel in 2002, he served as president of Elo TouchSystems, a subsidiary of Raychem Corporation. Mr. Hunter also served in a variety of positions during a 20-year career at Raychem Corporation, including vice president of commercial electronics and a variety of sales, marketing, engineering and management positions. Mr. Hunter has served on the board of directors of Veeco Instruments, Inc. (NASDAQ:VECO) since 2010. He previously served on the board of directors of CTS Corporation (NYSE: CTS) from 2011 to 2022. Mr. Hunter holds a bachelor's degree in electrical engineering from the University of Liverpool, England and an MBA from London Business School.

Mr. Noglows served as chairman of the board of CMC Materials (f/k/a Cabot Microelectronics Corporation) (NASDAQ:CCMP), a leading worldwide supplier of consumable products used in the semiconductor manufacturing process, from January 2016 to July 2022. He previously served as executive chairman of the board from 2014 until December 2015, and served as chairman, president and chief executive officer of CMC Materials from 2003 through 2014. Prior to that, Mr. Noglows served as executive vice president and general manager at CMC Materials. Mr. Noglows has served on the board of directors of Aspen Aerogels, Inc. (NYSE: ASPN) since 2014, and he also served on the Aspen board from 2011 to 2013. Mr. Noglows holds a bachelor's degree in chemical engineering from the Georgia Institute of Technology.