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Pamela Tondreau

Chairperson of the Board

Pamela L. Tondreau joined Energy Recovery’s Board of Directors in July 2019. Ms. Tondreau was unanimously elected Chairperson of the Board in October 2023.

Ms. Tondreau has over three decades of experience in the technology industry and private practice as a litigation and corporate attorney. In addition to her extensive experience navigating intellectual property, contract negotiation, domestic and international mergers and acquisitions, enterprise risk management, and corporate governance matters, she brings a proven history of cultivating excellence in company culture, ensuring diversity and inclusion, and establishing programs to grow and retain corporate talent.

Ms. Tondreau joined ON Semiconductor Corporation, also known as onsemi, as Executive Vice President and Chief Legal Officer in Oct. 2021. Prior to that, from Apr.-July 2020, she served as a consultant to Infineon Technologies AG, which purchased Cypress Semiconductor Corporation. Prior to her consulting role, Ms. Tondreau served as Chief Legal Officer, Corporate Secretary and Executive Vice President of Human Resources at Cypress from 2014-2020.

Prior to joining Cypress, Ms. Tondreau spent 13 years at Hewlett-Packard Company in various roles, including Chief Intellectual Property Counsel and Deputy General Counsel to the CTO, HP Labs, HP Networking, IP Licensing, Strategic Initiatives, Global Alliances, counsel to the Technology Committee of the Board, and counsel for the networking business including leading the acquisition of 3Com and integrating the China entity into HP. In addition, she supported the Chief Marketing Officer, the Chief Information Officer, and the EVP of Personal Systems, as well as serving as Corporate Secretary to the Technology Committee of the Board of Directors. Ms. Tondreau began her career as an associate at Thelen, Marrin, Johnson & Bridges.

Ms. Tondreau holds a bachelor’s degree from UC Berkeley and a J.D. from McGeorge School of Law.


Joshua Ballard

Chief Financial Officer

Joshua Ballard is the Chief Financial Officer at Energy Recovery, where he is responsible for the finance, accounting, information technology, human resources, and investor relations organizations for the Company. He brings more than 20 years of finance and operations experience, both domestically and internationally, working across a variety of industries within complex organizations to successfully navigate high growth.

Previously, Mr. Ballard held senior positions for nearly 15 years at private equity fund managers, including Orox Capital Management and SigmaBleyzer Investment Group, investing in the United States, Eastern Europe and the former Soviet Union. During this time he was responsible for directly leading as well as collaborating with portfolio company teams to develop and implement long-term strategic plans, and to improve finance, back office and manufacturing operations in private and public companies. As Executive Director at SigmaBleyzer, he was also responsible for fund operations and investor relations. Mr. Ballard also held multiple CFO roles with pre-IPO venture-backed companies as Managing Director of Lanterne Advisors, LLC.

Mr. Ballard is a Certified Financial Analyst and Chartered Management Accountant, holds a Global MBA in Finance from Arizona State University Thunderbird School of Global Business, and a BA in Russian Studies from the University of Iowa.


Sherif Foda


Sherif Foda has over two decades of senior-level management experience in the oil and gas industry and is the current Chairman and Chief Executive Officer of National Energy Services Reunited.

Previously, he served as the Executive Officer and Group President of Production at Schlumberger as well as President of Schlumberger Europe and Africa. He has an extensive career managing different operations in the Middle East and Europe as well as corporate and HQ positions. In oil and gas, these include managing fracturing business, cementing, well services and interventions, completions, artificial lifts, and production businesses. In this capacity, he managed all the different businesses, activities and operations for Schlumberger from South Africa to Norway.

He began his career on the offshore fields in the Red Sea before transferring to Germany to manage several countries, including Poland, Lithuania, Romania and Hungary. In addition, Mr. Foda worked in the information technology and computer industries in Egypt.

Mr. Foda holds a B.S. in Electronic Engineering from Ain Shams University and a B.A. in Science from College de la Salle, both in Cairo.


Robert Mao


Robert Y. L. Mao joined Energy Recovery’s Board of Directors in September 2010. Mr. Mao has previously served as Energy Recovery President and Chief Executive Officer from November 2019 to October 2023, and Chairman of the Board from June 2019 through October 2023.

Mr. Mao brings to Energy Recovery extensive experience helping and directing equipment manufacturers to successfully expand into new product and geographic markets. His strong strategic and analytic skills can guide the diversification of Energy Recovery’s product line and its growth into new global markets.

Mr. Mao served as CEO of 3Com Corporation (Nasdaq: COMS) from 2008-2010 and was on the company’s Board of Directors from 2007-2010. Mr. Mao successfully completed the sale of 3Com to Hewlett-Packard Company in Apr. 2010 and later served as the Chairman of HP China from 2013-2016. Prior to 3Com Corporation, Mr. Mao held executive positions at Norte Networks, Alcatel, and the U.S. multinational ITT in Asia and the United States. He also held CEO positions at Asian private companies selling industrial products into global markets.

Mr. Mao currently serves on the Board of the privately-held Ubee Interactive Corporation, a supplier of broadband access equipment and devices to multimedia and telecom service providers worldwide. Mr. Mao also served as a Board Director of Hon Hai Precision Ind. Co. Ltd., from 2018-2019, Foxconn Industrial Internet Co. Ltd. (FII) from 2017-2018, Cypress Semiconductors Corporation from 2014-2015, and Yulon-Nissan-Nissan Motor Company from 2004-2018.

The companies whose Boards Mr. Mao has served on cover an extensive range of industries and global markets including telecommunication, networking and information equipment and devices, semiconductors, automotive vehicles, software service, and other industrial products. Mr. Mao had also served as board member of international and national industry and trade associations.

Mr. Mao is a graduate of Cornell University with a bachelor’s degree in Materials Science and a master’s degree in Metallurgical Engineering. He also holds a master’s degree in Management from the Massachusetts Institute of Technology.


Chris Gannon

President and Chief Executive Officer

Chris Gannon is the President and Chief Executive Officer of Energy Recovery and brings substantial experience in leading organizations through rapid change across multiple corporate disciplines including strategy, operations, finance, and corporate development. In addition to acting as President and Chief Executive Officer, Mr. Gannon is also a Director of the company.

Mr. Gannon first joined Energy Recovery in 2015 and served as Chief Financial Officer until his appointment to President and Chief Executive Officer in 2018. Prior to joining Energy Recovery, Mr. Gannon was a Managing Director at Conway MacKenzie, where he served as a restructuring adviser to the City of Detroit throughout its historic $18 billion Chapter 9 bankruptcy, the largest municipal bankruptcy filing in U.S. history by debt. He was instrumental in the development of the City’s Plan of Adjustment and played a leading role in crafting its $1.7 billion restructuring and reinvestment plan. After the bankruptcy, he was a key architect in restructuring the City’s finance operations as well as in developing the City’s Human Capital program. Mr. Gannon also led the private equity investment arm of Talon Group and served as a finance operating partner to private equity funds through Caledonia Group. Mr. Gannon earned an MBA from the University of Chicago Booth School of Business and a BSE in Industrial and Operations Engineering from the University of Michigan College of Engineering.