Board of Directors

  • Ted Tewksbury III, Ph.D.

    Chairman of Board, Chief Executive Officer and President

    Dr. Tewksbury has served as Energy Focus’s Chairman, Chief Executive Officer and President since February 2017. Dr. Tewksbury served as Energy Focus’s Executive Chairman of the Board from December 2016 to February 2017. Dr. Tewksbury is a well-known semiconductor industry executive with a distinguished track record of transforming and building visionary businesses. As the former CEO of Integrated Device Technology, Dr. Tewksbury architected the company’s turnaround from 2008 to 2013, putting it in new businesses such as analog, power management, wireless battery charging and radio frequency (RF) products. Dr. Tewksbury served on the Board of Directors of Entropic Communications from 2010 to 2015 and, as CEO from 2014 to 2015, led the company’s return to profitability and sale to MaxLinear, where he currently serves on the Board of Directors. Dr. Tewksbury was President and COO of AMI Semiconductor from 2006 to 2008, Managing Director at Maxim Integrated from 2000 to 2006 and held a variety of engineering and management positions at IBM Microelectronics and Analog Devices. Dr. Tewksbury served on the Board of Directors of the Global Semiconductor Alliance (GSA) from 2011 to 2013 and has been a Board Director at Jariet Technologies since its spinoff from Semtech in 2015. Dr. Tewksbury received the B.S. degree in Architecture, as well as M.S. and Ph.D. degrees in Electrical Engineering from MIT.

    • Ronald D. Black

      Lead Director

      Dr. Black has served as a member of the Board of Directors since July 2015.  From 2012 until June 2018, he was President and Chief Executive Officer as well as a member of the Board of Directors of Rambus, Inc., a technology solutions company that captures, secures, and moves data. Its customizable IP cores, architecture licenses, tools, services, and training improve the competitive advantage of its customers’ products while accelerating their time to market. Dr. Black was previously the Managing Director of R.D. for Black & Company, a consulting firm and was the Chief Executive Officer of MobiWire (formerly Sagem Wireless) a privately-held mobile handset company headquartered near Paris, France that offers products and services to original equipment manufacturers and mobile network operators in the mobile phone marketplace. Dr. Black has also served as executive vice president of the Client Systems Group at Agere Systems, a semiconductor company spun off from Lucent, and has held a number of senior executive roles at other semiconductor companies, including Motorola and IBM. 

      Dr. Black holds a Bachelor of Science degree, a Master degree, and a Ph.D. in Materials Science and Engineering from Cornell University.

    • Jennifer Cheng

      Independent Director

      Ms. Cheng is a co-founder and Chairwoman of Social Energy Partners LLC, which pioneered the Intelligent Building as-a-Service model to accelerate the adoption of sustainability technologies and building IoT. Ms. Cheng also served as an independent director of Energy Focus from 2012 to July 2014. Previously, she was the founder and Chairwoman of The X/Y Group, a marketing enterprise that markets and distributes global consumer brand products, including JanSport and Skechers in the greater China region. Previously, Ms. Cheng was a Marketing Director for Molten Metal Technology, a Boston-based clean energy company that developed patented technologies and offered solutions for advanced treatment and energy recycling for hazardous radioactive waste.  Ms. Cheng received B.S. in Economics and International Business from Rutgers University and a Master’s degree in Business Administration with focus on Marketing and Finance.

    • Marc J. Eisenberg

      Independent Director

      Mr. Eisenberg has served as a member of the Board of Directors since July 2015.  He has been President and CEO and a member of the Board of Directors of ORBCOMM, Inc. since March 2008.  He joined ORBCOMM in 2002 and previously served as Chief Operating Officer, Chief Marketing Officer, and Executive Vice President of Sales and Marketing. ORBCOMM is a global provider of machine-to-machine solutions, including network connectivity, devices, and web reporting applications. Prior to joining ORBCOMM, Mr. Eisenberg was an executive at Cablevision serving in various roles. 

      Mr. Eisenberg holds a Bachelor of Science degree in Marketing and Management from New York University.


    • Geraldine McManus

      Independent Director

      Ms. McManus has been a Managing Member of Granger Management since May 2014. Previously, she was a Managing Director in the Investment Management Division at Goldman Sachs, where she worked from February 1998 until February 2014 and helped build its Private Wealth Management business, including structuring its business model and key functions focused on ultra-high net worth individuals and family groups. Prior to joining Goldman Sachs, Ms. McManus spent six years at Merrill Lynch as a Managing Director heading the Yankee Debt Capital Markets Group, advising sovereigns, supranational and international corporations on global debt issuance and liability management. Before working at Merrill Lynch, Ms. McManus spent six years at Salomon Brothers, two years as an associate in Corporate Finance and four years as a Product Specialist in the Hedge Management/Derivatives Group. Ms. McManus received a B.S. from Cornell University and an M.B.A. from Wharton. She serves on the Board of Trustees for The Delbarton School in Morristown, New Jersey, The Caron Foundation in Wernersville, Pennsylvania and The Jane Goodall Institute.

    • Michael Ramelot

      Independent Director

      Mr. Ramelot has served as a member of the Board of Directors since September 2013.  Since 2002, he has been a consultant on many projects including being the project leader on BlackLine system implementation to enhance the financial close process of several multi-million dollar companies as well as a project leader on due diligence, accounting valuations and appraisals related to corporate acquisitions. In addition, Mr. Ramelot also engages with researching and preparing position papers for companies on complex accounting issues related to stock-based compensation, income taxes, business combinations and goodwill, and preparing various SEC filings, assessing and implementing Section 404 of Sarbanes-Oxley for client companies.

      Prior to becoming a consultant, Mr. Ramelot was CFO and then President of Compro Packaging LLC, a manufacturer of corrugated packaging material, and CFO for Flextronics Inc., a publicly traded international contract manufacturer, and CFO of Cromemco Incorporated, a manufacturer of microcomputers. He began his career with the auditing firm KPMG. 

      Mr. Ramelot holds a Bachelor of Science degree in Accounting from St. Mary's College, and a Master of Business Administration degree from the University of Santa Clara. He is a Certified Public Accountant and a member of the Financial Executive Institute and American Institute of Certified Public Accountants.

    • Satish Rishi

      Independent Director

      Mr. Rishi has served as a member of the Board of Directors since April 2018. Mr. Rishi is currently serving as a consultant and interim Chief Financial Officer for View Inc. Mr. Rishi was Senior Vice President of Finance and Chief Financial Officer of Rambus Inc. and served as its Chief Financial Officer from April 2006 to August 2016. Prior to Rambus, Mr. Rishi held senior financial management positions at semiconductor and electronic manufacturing companies, including Dell Inc. and Intel Corporation. Mr. Rishi was a board member of Novati Technologies until October 2017, and a board member, chair of the audit committee and member of the nominating and governance committee of Measurement Specialties, Inc. from 2005 until its sale in 2014.

      Mr. Rishi holds a Bachelor of Science degree with honors in mechanical engineering from Delhi College of Engineering, Delhi University, and a Master’s in Business Administration with a concentration in finance from Walter J. Haas School of Business, University of California, Berkeley.