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JOSEPH P. KEITHLEY
Chairman of the Board, President and Chief Executive Officer
Keithley Instruments, Inc.
Joseph P. Keithley is Chairman of the Board, President and Chief Executive Officer of Keithley Instruments, Inc. in Cleveland, Ohio. Mr. Keithley has served as the company’s Chairman since February 1991 and President and CEO since November 1993.
Keithley graduated from Cornell University with a Bachelor of Science degree in 1971, and a Master of Operations Research and Industrial Engineering in 1972. He received a Master's in Business Administration with distinction from the University of Michigan in 1976.
Upon graduation from Cornell, Keithley joined Eaton Corporation where he worked as a manufacturing engineer and later as a market research analyst in the Truck Component Group.
Since joining Keithley Instruments in 1976, Joseph P. Keithley has held various positions in manufacturing, sales, marketing, and division management.
Keithley is a member of the Board of Trustees of Case Western Reserve University and the visiting committee of the Case School of Engineering. He is a NorTech board member and vice chairman of the board and is a director of The Cleveland Foundation.
Keithley is a director of Brush Engineered Materials and Nordson Corporation and is an advisor to Early Stage Partners.
Daniel Faia
Vice President, Sales and Support
Daniel Faia joined Keithley Instruments, Inc. in February 2009 as Vice President, Sales and Support. Prior to joining Keithley, Mr. Faia has served as Vice President/Worldwide Sales and Marketing at Eagle Test Systems with responsibility for managing global sales, applications and customer service efforts. Prior to joining Eagle Test, Mr. Faia was employed by Teradyne, Inc. in various sales and product marketing positions from March 1997 to April 2004. From March 1989 to March 1997, Mr. Faia was employed by Raytheon Co. where he held positions in Test Engineering and Design Engineering of Automated Test Equipment. Mr. Faia holds a B.S. in Computer Engineering from Wentworth Institute of Technology in Boston, Massachusetts.
Mark A. Hoersten
Vice President, Business Management
Mark Hoersten is Vice President, Business Management, for Keithley Instruments, Inc. Hoersten, who joined Keithley as a design engineer in 1980, has held several positions at Keithley, including Engineering Manager, Product Market Manager, Strategic Marketing Manager, Business Manager for the Telecom Group, and General Manager.
Hoersten graduated from the University of Toledo with a Bachelor of Science degree in Electrical Engineering. He earned a Master of Science degree in Electrical Engineering from Cleveland State University and received his Master of Business Administration from Case Western Reserve University.
Hoersten is a registered professional engineer.
Larry L. Pendergrass
Vice President, New Product Development
Larry L. Pendergrass joined Keithley Instruments, Inc. in 2003 as Vice President, New Product Development. Prior to joining Keithley, he had over 20 years experience in research and development, product development, and manufacturing engineering with Agilent Technologies and Hewlett-Packard.
Pendergrass received a Bachelor of Science degree in Physics from San Diego State University and a Master's degree in Physics with a focus on Solid State Physics and Optics from the University of California.
Mark J. Plush
Senior Vice President and Chief Financial Officer
Mark J. Plush is Vice President and Chief Financial Officer for Keithley Instruments, Inc. Plush joined Keithley in 1982 as Corporate Controller, was named a corporate officer in 1989, and was appointed Chief Financial Officer in 1998. Prior to joining Keithley, Plush completed an 11-year career with Parker Hannifin Corporation.
Plush earned a Bachelor of Science degree in Business Administration from John Carroll University in Cleveland, Ohio, and a Master of Business Administration from Case Western Reserve University in Cleveland, Ohio. He is also a certified public accountant.
Plush is a member of the Board of Directors of Richmond Heights Hospital, part of the University Hospitals Health System. He is a member of the American Institute of Certified Public Accountants, the Financial Executive Institute, and the Ohio Society of Certified Public Accountants.
Linda C. Rae
Executive Vice President and Chief Operating Officer
Linda Rae is Executive Vice President and Chief Operating Officer at Keithley Instruments, Inc. Rae joined Keithley in 1995 with a position in product marketing and later served as head of Keithley's Component Test Group, as well as the company's Optoelectronics Group, and most recently was the company's Senior Vice President and General Manager.
Rae earned a Bachelor of Science degree in Electrical Engineering from the University of Florida. In addition, she holds a Master of Business Administration from the Weatherhead School of Management at Case Western Reserve University and a Master of Science degree in Electrical Engineering from Case Western Reserve University.
Rae is a former member of the Weatherhead School of Management Alumni Association Board of Directors. As part of Keithley work teams, Rae has received two EDI (NorTech) awards and an internal Keithley QSII (Quality-Service-Innovation-Integrity) award for innovation. | 
