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  • Image of Mike Slessor

    Mike Slessor

    President and Chief Executive Officer

    Michael D. Slessor has served as our Chief Executive Officer of FormFactor, Inc. since December 2014, and as a Director since October 2013. Mike served as President from October 2013 to December 27, 2014, and as Senior Vice President and General Manager, MicroProbe Product Group from October 2012 to October 2013. Before joining FormFactor, he was President and Chief Executive Officer of MicroProbe from July 2008 through the October 2012 closing of FormFactor’s acquisition of MicroProbe. Prior to joining MicroProbe, he held various management, product-marketing, and applications-engineering positions in the semiconductor industry, primarily with KLA.

    Mike received his Ph.D. in Aeronautics and Physics from the California Institute of Technology and his B.A.Sc. in Engineering Physics from the University of British Columbia.

  • Image of Shai Shahar

    Shai Shahar

    Chief Financial Officer

    Shai Shahar has served as our Chief Financial Officer since March 2018. Shai has more than 25 years of financial leadership and management experience. Prior to joining FormFactor, he served as the Vice President of Finance & Operations at Nova Measuring Instruments. From 2014 to 2016, Shai served as Vice President Finance and Corporate Controller of PMC-Sierra, Inc., where he also served as its Vice President Finance, FP&A, from 2010 to 2014. Prior to that, Shai was Chief Financial Officer of Wintegra, Inc., until its acquisition by PMC-Sierra.

    Shai is a certified public accountant in Israel and received his bachelor’s degree in Accounting and Economics in 1998 from the Recanati School of Business, Tel-Aviv University, Israel.

  • Image of Jarek Kister

    Jarek Kister

    CTO and Senior Vice President of Technology R&D

    Jarek (January) Kister has served as our CTO and Sr. VP of Engineering & Product Development since January 2014. Prior to this, Jarek served as the CTO & VP of Engineering of the MicroProbe Product Group from October 2012 to January 2014. Before joining FormFactor, Jarek was the CTO and VP of Engineering for MicroProbe from April 2004 until the closing of FormFactor’s acquisition of MicroProbe in October 2012. Jarek’s aforementioned role at Microprobe was preceeded by his role as the Vice President of Engineering with Kulicke & Soffa Industries, Test Division from 2000 to 2004. From 1990 to 2000, he served as Director of Engineering and later as Chief Technical Officer with Probe Technology, Inc. Jarek holds more than 30 U.S. patents pertaining to the semiconductor wafer and package test.

    Jarek holds an M.S. in Mechanical Engineering from the University of Michigan, and a B.S. in Mechanical Engineering from Polytechnic of Silesia, Poland. Additionally, he is a graduate of the Advanced Management Program from the Haas School of Business at the University of California, Berkeley.

  • Image of Steven Nott

    Steven Nott

    Chief Information Officer

    Steven Nott has served as our Chief Information Officer since October, 2020. Steven has over 20 years of experience in Information Technology. Steven held various Information Technology positions within Cypress Semiconductor before becoming its first Chief Information Officer in 2012.

    Steven holds a BS in Accounting and Management Information Systems from San Jose State University.

  • Image of Aasutosh Dave

    Aasutosh Dave

    Chief Commercial Officer

    Aasutosh Dave has served as our Chief Commercial Officer since January, 2024. Aasutosh has more than 20 years of experience in semiconductors with a focus on developing global field teams, as well as business revenue growth and customer management. Prior to joining FormFactor, Aasutosh held various leadership and management positions at ASML. Most recently, he served as the Head of Global Sales and Applications leading their eBeam business. Aasutosh has held positions from R&D process engineer, Product Marketing, Product Development, and Sales at Hybond, AMD and Mentor Graphics (now Siemens).

    Aasutosh received his M.S. in Electrical Engineering from The University of Texas at Arlington and his B.E. from Gujarat University in India.

  • Image of Matt Losey

    Matt Losey

    Executive Vice President and General Manager of the Probes Business Unit

    Matt Losey has served as our Executive Vice President since 2022 and Senior Vice President and General Manager of the Probes Business Unit since 2016. Matt joined FormFactor in 2011. Prior to joining FormFactor, Matt held various positions in the semiconductor and microsystems industries, including Applied Materials, Texas Instruments, Sandia National Labs, and Advantest America where he served as the VP of Engineering for the probe card business unit acquired from Verigy.

    Matt received his Ph.D. in Chemical Engineering from the Massachusetts Institute of Technology and his B.S. in Chemical Engineering from Stanford University.

  • Image of Jens Klattenhoff

    Jens Klattenhoff

    Vice President and General Manager, Systems Business Unit

    Jens Klattenhoff has served as our VP and General Manager of Systems Business Unit since January 2021. He joined FormFactor in October 2016 as Director Product Marketing for the Systems Business Unit. From April 2018 until December 2019 he served as Sr. Director Marketing. Jens has over 20 years of experience in test & measurement technologies. Before joining FormFactor he held various Sales & Marketing leadership positions at Polytec GmbH, Baumer Optronic GmbH and other multi-national technology companies.

    Jens holds a Dipl.-Ing. in Applied Laser Science from Applied University Emden, Germany and is an SGBS Certified Executive Management Expert of the St. Gallen Business School in Switzerland.

  • Image of Aliza Scott

    Aliza Scott

    Chief Human Resources Officer

    Aliza Scott joined FormFactor in 2022 and serves as our Senior Vice President and Chief Human Resources Officer. Prior to joining FormFactor, Aliza held progressive operating company, segment and corporate HR leadership roles at Fortive, most recently serving as the Vice President of HR Transformation & Technology. Prior to that, she worked in various senior HR leadership positions in multiple global technology companies including Danaher, Tripwire, Autodesk and FEI Company.

    Aliza holds a B.A. degree from Oregon State University.

  • Image of Thomas Fries

    Thomas Fries

    Vice President and General Manager, Emerging Growth Business Unit

    Thomas Fries has served as VP and General Manager of the Emerging Growth Business Unit since January 2023. He joined FormFactor in 2019 through the acquisition of FRT GmbH, after nearly three decades of innovation and entrepreneurship in metrology for semiconductor wafers, advanced packaging, MEMS, optics, and other technologies. Thomas also currently serves as a supervisory board member for Plan Optik AG and he previously held long-time board positions with IVAM Microtechnology Network and the Centrum für Organische Produktionstechnologien in Nordrhein-Westfalen. Dr. Fries has published dozens of technical papers and articles, and he holds a PhD in Physics from the University of Bonn and a Physics Degree from the Saarland University.