About TerraPower

Bill Gates

Chairman of the Board

Bill Gates is co-founder of Microsoft, chair of the Gates Foundation, founder of Breakthrough Energy, and founder and chairman of TerraPower.

Gates co-founded Microsoft in 1975 with Paul Allen and led the company to become the worldwide leader in business and personal software and services. In 2008, Gates transitioned to focus full-time on the Gates Foundation’s work to expand opportunity to the world’s most disadvantaged people. At Breakthrough Energy, he’s putting his experience as an innovator and problem-solver to work to address climate change by supporting the next generation of entrepreneurs, big thinkers and clean technologies.

Since 2006, Gates has also served as chairman of TerraPower, which aims to provide the world with a more affordable, secure and environmentally friendly form of nuclear energy.

Nathan Myhrvold, Ph.D

Vice Chairman of the Board

Nathan Myhrvold is the vice chairman of the board of TerraPower, the first spin-out company of Intellectual Ventures^®, an invention company based in Bellevue, Washington.

As founder and CEO of Intellectual Ventures, Dr. Myhrvold focuses on a variety of business interests relating to the funding, creation and commercialization of inventions. Previously, he served as the chief strategist and chief technology officer of the Microsoft Corporation. During his 14-year tenure with the software leader, he founded Microsoft Research and numerous technology groups that resulted in many of Microsoft’s most successful products. Dr. Myhrvold has an extensive background in mathematics and science — he earned a doctorate in theoretical and mathematical physics and a master’s degree in mathematical economics from Princeton University. He was a postdoctoral fellow in the department of applied mathematics and theoretical physics at Cambridge University and worked on research with renowned cosmologist Stephen Hawking. He is a member of the American Association for the Advancement of Science, the American Physical Society, the Institute of Electrical and Electronics Engineers and the advisory board to the University of Washington’s physics department.

Dr. Myhrvold shares the views of his peers at TerraPower that nuclear energy is the only proven generation source that can provide the large-scale, baseload electricity needed to meet the world’s growing energy demands while combating global warming.

Chris Levesque

President and CEO

Chris Levesque is president and chief executive officer of TerraPower and serves as a member of the TerraPower board. He was appointed to that position in November 2018 after having served as president of TerraPower since 2015. Levesque leads this nuclear innovation company in the pursuit of next-generation nuclear energy solutions and oversees TerraPower’s new venture into therapeutic medical isotopes. His proven track record in scoping, planning and implementing complex projects began with his service in the U.S. Nuclear Navy and features more than 30 years of experience in the nuclear field.

Prior to joining TerraPower, Levesque led major new reactor build efforts at both Westinghouse and AREVA, overseeing projects in both the U.S. and Finland. Before his assignment in Finland, he led the formation of AREVA’s joint venture with Newport News Shipbuilding, AREVA Newport News, for which he served as chairman of the board and president.

Levesque has extensive experience with the nuclear industrial base and nuclear component manufacturing. Earlier in his career, he served as the manager of engineering and manufacturing at Westinghouse’s Newington, New Hampshire, component manufacturing facility, and he has served in multiple management positions at two nuclear-capable shipyards. Levesque began his career as a nuclear submarine officer and served on both the USS Boise (SSN 764) and the USS Will Rogers (SSBN 659). On Boise, he supervised initial criticality and reactor startup testing, and qualified as chief engineer.

Levesque holds a Bachelor of Science in mechanical engineering from Rensselaer Polytechnic Institute, a Master of Science in mechanical engineering and a Naval Engineer degree from the Massachusetts Institute of Technology. He currently serves on the Department of Energy’s Energy Workforce Advisory Board that advises the Secretary on workforce issues; and serves on the board of the Nuclear Energy Institute.

John Gilleland, Ph.D

Chief Technical Officer

John Gilleland is the chief technical officer of TerraPower LLC, a company founded by Bill Gates (chairman), Nathan Myhrvold (vice chairman) and Dr. Gilleland in 2008 to focus on achieving improved nuclear safety, proliferation resistance, energy security and economic power for all countries.

From 2008 to 2015, Dr. Gilleland served as TerraPower’s chief executive officer (CEO). Under his leadership, TerraPower transitioned from an idea to a globally recognized center for innovation and development of new nuclear reactors and other advanced nuclear systems. Dr. Gilleland now serves as the company’s technology evangelist, focusing on the long-term product vision and feasibility of TerraPower’s best-known product, the traveling wave reactor.

Previously, Dr. Gilleland founded and served as the CEO of Archimedes Technology Group, a company that created and successfully tested new technologies, which can speed weapons waste cleanup and opens new non-chemical approaches to commercial spent fuel reprocessing.

As chief scientist and vice president of energy programs at Bechtel Corporation, he was responsible for a large number of advanced energy production and energy distribution system projects. In addition to nuclear programs, he oversaw a number of renewable energy projects that included very large central receiver and photo-voltaic solar projects, large commercial geothermal plants, commercial and demonstration biomass, wind, advanced diesel-solar hybrid arrays and several other exploratory systems. Energy storage projects included superconducting, battery, hydro-pumped, inertial and compressed air-based systems. Distributed energy projects included commercial scale fuel cell installations, microturbines, and small commercial and home-use solar arrays.

Prior to his Bechtel experiences, he served as the U.S. managing director of the International Tokamak Experimental Reactor (ITER) program during its conceptual design phase and senior vice president of General Atomics for fusion development.

Dr. Gilleland holds a Bachelor of Science in physics from Yale University and a doctorate in physics from the University of Michigan.

David Scott

David Scott is an expert in strategy formulation and implementation with an extensive track record of successful engagements involving multibillion-dollar projects and ventures for both government and private sector clients. With a particularly deep resume within the energy industry, he is also a sought-after advisor on a wide spectrum of energy technologies and sources, including fossil fuels, renewables and nuclear energy.

Scott is the founder and president of the Investment Diplomacy Group (IDG), a bespoke, U.S.-based consultancy providing expert advice on transactions and ventures that combine a high degree of both commercial and political complexity. Via IDG, Scott provides ongoing services to a number of corporate and government clients, including as a long-time advisor to the chairman of the Executive Affairs Authority of the government of Abu Dhabi in the United Arab Emirates.

In addition to the above, Scott sits on the board of directors for the Emirates Nuclear Energy Corporation (ENEC) and is widely credited as a chief architect of the well-regarded and successful UAE peaceful nuclear energy program. He additionally sits on the board of Seattle-based TerraPower, as well as advisory boards for San Diego-based General Atomics and London-based Lloyd’s Registry. Scott is also the chairman of UAE-based AGTECH start-up Pure Harvest, as well as UK-based InfraSalience (a carbon-capture and utilization technology company).

Scott is deeply passionate about education and human capital development and maintains relationships with a number of major academic institutions across the globe, where he frequently lectures on various geopolitical, business and strategy-related topics.

Previously, as executive director of Economic and Energy Affairs for the Executive Affairs Authority of Abu Dhabi (2006-2012), Scott led an interdisciplinary team of analysts charged with conducting targeted research and providing strategic policy advice to the chairman of Abu Dhabi’s Executive Council. In his role as executive director of Energy and Economic Affairs, Scott helped organize and lead an interagency working group that analyzed future energy demand across the UAE and developed the current diversified technology strategy that is being implemented to meet that demand.

Prior to his role with the Executive Affairs Authority, Scott worked as a regional vice president for Occidental Petroleum Corporation (2002-2006), contributing to Occidental’s rapid expansion within the GCC and wider Middle East. From 2001-2002, he served at the White House as the National Security Council’s director for Arabian Peninsula and North African affairs.

Scott is a former U.S. Foreign Service Officer and a veteran of the United States Army. He is a graduate of Brigham Young University and the Defense Language Institute, as well as the U.S. Army’s Cryptologic and Electronic Warfare School and Non-Commissioned Officers Academy. He was also a graduate fellow with the Center for Arabic Studies Abroad at the American University of Cairo.

He is fluent in both Arabic and Spanish.

Kristine Svinicki

Kristine Svinicki is an internationally recognized policy expert and innovator with more than 30 years of public service at the state and federal levels of government. A battle-tested leader, she has a demonstrated record of success gathering diverse coalitions to move solutions to our most complex energy, environmental, and security challenges from concept to reality. She is firmly convinced that diversity in all forms — thought, experience, perspective and background— is essential to pushing past outmoded paradigms and creating a global energy future that can improve the standard of living of every human citizen.

Appointed to her role by three successive United States presidents, Svinicki was the longest-serving member of the United States Nuclear Regulatory Commission (U.S. NRC) in the agency’s history, having stepped down as chairman in early 2021. Before her appointment to the U.S. NRC, Svinicki served as an expert and policy advisor for more than a decade to members of the United States Senate on subjects ranging from energy to national security. She previously managed nuclear research and development programs at the U.S. Department of Energy and worked as an energy analyst for the state of Wisconsin.

Svinicki holds a Bachelor of Science in nuclear engineering from the University of Michigan, where she currently serves as an adjunct professor of nuclear engineering and radiological sciences in the College of Engineering. She also serves on the boards of directors of Southern Company and Pinnacle West Capital Corporation. She holds a CERT Cybersecurity Oversight Certification from the Software Engineering Institute, Carnegie Mellon University. She was selected as a Brookings Institution Fellow in 1997 and as a John C. Stennis Congressional Fellow of the 108th U.S. Congress.

She volunteers as chair of the American Nuclear Society International Council, as member of the Idaho National Laboratory Nuclear Science and Technology Strategic Advisory Committee, and as an expert committee member of the National Academy of Sciences Committee on Assessing and Improving Strategies for Preventing, Countering and Responding to Weapons of Mass Destruction Terrorism – Nuclear Threats.

Ralph Izzo

Ralph Izzo was executive chair of the Public Service Enterprise Group Inc. (PSEG) board of directors effective September 1, 2022, until his retirement following his last day on December 31, 2022. He was also a member of the Public Service Electric and Gas Company (PSE&G) board of directors.

Previously, he had been chairman and chief executive officer of PSEG since April 2007 and the company’s president since October 2006. Before this, he was president and chief operating officer of PSE&G.

Since joining PSE&G in 1992, he held several executive positions within PSEG’s family of companies, including PSE&G senior vice president – utility operations; PSE&G vice president – appliance service; PSEG vice president – corporate planning; and PSE&G vice president – electric ventures.

He is a well-known leader in the energy industry as well as the public policy arena. He is frequently asked to testify before Congress and speak at conferences and to organizations on matters pertaining to national energy policy.

Mr. Izzo’s career began as a research scientist at the Princeton Plasma Physics Laboratory, performing numerical simulations of fusion energy experiments. He has published or presented more than 35 papers on magnetohydrodynamic modeling. He received his Bachelor of Science and Master of Science degrees in mechanical engineering and his Doctor of Philosophy degree in applied physics from Columbia University. He also received a Master of Business Administration degree with a concentration in finance, from the Rutgers Graduate School of Management. He is listed in numerous editions of Who’s Who, is a 2022 inductee into the New Jersey Hall of Fame and has been the recipient of several national fellowships and awards, including the 2022 United States Energy Award from the U.S. Energy Association. Mr. Izzo has received honorary degrees from Montclair State University (Doctor of Science), the New Jersey Institute of Technology (Doctor of Science), Thomas Edison State University (Doctor of Humane Letters), Bloomfield College (Doctor of Humane Letters), Rutgers University (Doctor of Humane Letters), and Raritan Valley Community College (Associate of Science).

Mr. Izzo is the former chair of the Nuclear Energy Institute and a member of the U.S. Department of Energy’s Fusion Energy Sciences Advisory Committee. He is on the boards of directors of the Bank of New York Mellon, CMS Energy and Ovintiv Inc. In addition, he is on the boards of directors of the New Jersey Performing Arts Center and the Liberty Science Center. He is also on the advisory board for the University of Pennsylvania’s School of Engineering and Applied Sciences Mechanical Engineering and Applied Mechanics Department, a member of the board of trustees of the Peddie School and on the advisory council of Princeton University’s Andlinger Center for Energy and the Environment as well as a member of the visiting committee for the Department of Nuclear Engineering at Massachusetts Institute of Technology, the Columbia University School of Engineering Board of Visitors and of the CEO Action for Diversity and Inclusion. In addition, he is a former chair of the Rutgers University Board of Governors and the New Jersey Chamber of Commerce.

Bill Pitesa

Bill Pitesa has been involved with the nuclear power industry his entire career. He worked for Duke Energy for 39 years starting at the McGuire Nuclear Station. During his time at McGuire, he held a Senior Reactor Operator (SRO) license and was also loaned to the Institute of Nuclear Power Operations (INPO) as an operations evaluator. Subsequently, he moved up through management holding positions that include training manager, operations manager, plant manager, and corporate vice president. Following the merger between Duke Energy and Progress Energy, he held the role of chief nuclear officer (CNO) responsible for the safe and reliable operation of 11 reactors.

During his time at Duke Energy, Mr. Pitesa was frequently asked by INPO, the World Association of Nuclear Operators (WANO), and the International Atomic Energy Agency (IAEA) to support US and international plant assistance and evaluations. This led to review visits in South Africa, Ukraine, France, South Korea, and Germany. He also chaired the INPO Executive Advisory Group (EAG), which facilitated industry CNO’s feedback to INPO on strategy and execution of U.S. nuclear power continuous improvement initiatives and direction.

After his Duke Energy CNO role, Mr. Pitesa was loaned to the Nuclear Energy Institute (NEI) in Washington, D.C., as the NEI chief nuclear officer. This experience allowed Bill to interact closely with the Nuclear Regulatory Commission (NRC) and to create consensus among the U.S. CNOs on industry priorities with the NRC.

After retiring from Duke Energy, Bill became the nuclear lead on the board of directors for Vistra Corp and Energy Northwest. Additionally, Bill is on the board of directors at Ontario Power Generation and advises SK, the second-largest conglomerate in South Korea, as they pursue innovating the global energy industry.

“With my operational background and experiences, I am eager to assist TerraPower on the journey to build and safely operate a Natrium Reactor.”

Moohwan Kim

Moohwan Kim is the executive vice president and head of Green Division of SK Inc., a holding company of SK Group, responsible for SK’s investment and corporate development activities across all decarbonization sectors, including energy transition, industrial decarbonization, carbon management solutions, and innovative digital technologies as well as infrastructure, including artificial intelligence, web3, mobility, software platform and data center and logistics.

He oversees an investment portfolio of $2.5 billion in various asset classes, including: Plug Power (Hydrogen); TerraPower (SMR); Monolith Materials (Hydrogen); Fulcrum Bioenergy (W-t-E); Lunar Energy (ESS); Atom Power (EV Charging); Perfect Day and Nature’s Fynd (Alternative Protein); Ecosecurities (Voluntary Carbon Credit); SoCar (Car Sharing); ESR (Logistics); Grab (Mobility); Chin Data Group (Datacenter); Geminus AI (AI); Swift Navigation, and A4x (Web3), with several venture funds as related to climate solution and deep tech. Also, he has served as a board member of multiple portfolio companies such as SK E&S, Lunar Energy, Perfect Day, and Ecosecurities.

Before his work at SK Inc., Mr. Kim held various leadership positions in corporate development and investment, corporate strategy, executive management support and marketing strategy from various SK Group companies. He received his Bachelor of Arts from Seoul National University.

Joe McCann

Joe McCann is a seasoned biotech leader with nearly two decades of experience across start-ups and global pharma, specializing over the last 15 years in targeted radiotherapies for oncology. He brings deep expertise in clinical development, CMC, and the complex supply chain strategies required to commercialize radiopharmaceuticals.

Joe co-founded POINT Biopharma Inc. in 2019, serving as CEO and leading the company from inception through a successful NASDAQ listing in 2021 and a $1.4B acquisition by Eli Lilly in 2023. Under his leadership, POINT advanced multiple assets through clinical development, built first-of-its-kind manufacturing infrastructure, and secured over $650M in financing. He played a pivotal role in integrating POINT’s platform and pipeline into Lilly’s oncology division.

Previously, Joe served as CEO of the Centre for Probe Development and Commercialization (CPDC), a supply chain pioneer in radioligand therapy and imaging products. During his tenure, he created the CDMO division now known as AtomVie Global Radiopharma. He began his career at GlaxoSmithKline in Pharmaceutical Development.

Joe holds a Ph.D. in Biochemistry from McMaster University and a B.Sc. in Biochemistry from the University of Guelph. He currently advises companies and investors on theranostics, CDMO strategy, and supply chain innovation.

Marcia Burkey

Company Advisor

Marcia Burkey, retired Executive Vice President and CFO of TerraPower, has decades of experience in finance focused primarily on the energy infrastructure industry. Ms. Burkey currently serves as an independent director on the board of the American Transmission Company. Ms. Burkey has an extensive background leading growth and transformation in corporate finance and a diverse range of corporate functions. Prior to TerraPower, Ms. Burkey oversaw investment operations for a family of funds with interests in communication, energy, internet and information technology companies. Ms. Burkey was a Senior Vice President and Partner of Bechtel Group, Inc. In her capacity as CFO of Bechtel Enterprises, Ms. Burkey assisted in capital raisings within Bechtel Enterprises and Bechtel Group, and served on the boards of several affiliated infrastructure companies. Ms. Burkey also served as the president of Bechtel’s NASD broker-dealer, Bechtel Financing Services, Inc. Prior to her work at Bechtel, Ms. Burkey was a banker at SBC Warburg (now UBS) leading corporate and project financings globally including directing the firm’s Latin America project finance business development efforts. In addition, she was responsible for corporate advisory and financing including with U.S. public utilities.

Burkey was a member of the U.S. Department of Commerce’s Civil Nuclear Trade Advisory Committee (CINTAC), where she provided guidance on the most pressing trade issues facing the U.S. civil nuclear sector. Burkey holds a Bachelor of Arts from Macalester College (Phi Beta Kappa and magna cum laude) and a Master of Arts from Columbia University. Ms. Burkey has spoken at dozens of events and conferences such as Women in Nuclear, CERAWeek, Columbia Climate School, the Atlantic Council and the Bloomberg Sustainable Business Summit, and has been featured in the media including GeekWire, Washington Post, Barron’s, Morning Consult and the Puget Sound Business Journal.

Scott Claunch, RPh

PRESIDENT, TERRAPOWER ISOTOPES®

Scott Claunch is president of TerraPower Isotopes®, a division of TerraPower focused on the pursuit of next-generation therapeutic medical isotopes for Targeted Alpha Therapy (TAT) treatments. In this role, Claunch guides the business in the processing and delivery of select materials and grows the industry and innovator partnerships necessary to develop and commercialize TAT treatments to potentially eliminate many forms of cancer.

Prior to joining TerraPower, Claunch led the Global Nuclear Medicine Franchise at Lantheus Medical Imaging. He was responsible for commercial sales for all nuclear medicine products and pre-launch activities for Lantheus’ future portfolio in Positron Emission Tomography (PET). Additionally, he oversaw cyclotron operations used in the manufacture and distribution of radiopharmaceuticals globally. Previously, Claunch held various leadership positions in operations, change management, quality and sourcing at Option Care Health and Cardinal Health Nuclear Pharmacy Services.

Claunch remains active as a nuclear pharmacist and previously served as a board member for the Alzheimer’s Association, Central Ohio Chapter. He earned a Bachelor of Science degree in pharmacy, specializing in nuclear pharmacy, from the University of New Mexico.

Christopher Fendley, CFA

Vice President, Commercial Development

As the VP of Commercial Development Chris is responsible for the business planning, strategy development and commercial negotiations for TerraPower’s reactor designs and nuclear medicine programs. Chris has primarily worked on the development of the Natrium reactor design including supporting TerraPower’s Advanced Reactor Demonstration selection. Prior to TerraPower Chris worked at DTE Energy in Michigan supporting finance and commercial development of renewable and industrial utility facilities. He also was a nuclear submarine officer in the U.S. Navy where he served aboard the fast-attack submarine USS Tucson (SSN-770). Chris has an MBA from The University of Chicago Booth School of Business and an undergraduate degree from The University of Texas at Austin.

Craighton Goeppele

EXECUTIVE VICE PRESIDENT AND GENERAL COUNSEL

As executive vice president and general counsel for TerraPower, Craighton Goeppele focuses on international and domestic agreements, corporate matters, intellectual property, compliance, risk management and employment law. He has practiced law for more than 25 years, including several years in Japan and throughout Europe, and is licensed to practice law in the state of Washington.

From 2011 to 2013, he served as senior counsel at Intellectual Ventures, where he handled global compliance, employment and various corporate and commercial transactions. From 2009 to 2011, he was senior director, business transactions at Nintendo of America, where he led a team of lawyers and staff handling all contracts and compliance matters for Nintendo’s business in the Western Hemisphere. From 2000 to 2009, Goeppele held several leadership roles in Starbucks Corporation’s legal department, including managing a team of lawyers supporting the business of Starbucks across 26 countries in Europe, the Middle East and Africa, and acting as lead lawyer for its global consumer packaged goods businesses. From 1992 to 2000, Goeppele practiced with the law firm of Riddell Williams P.S. (then known as Graham & James/Riddell Williams) in the company’s Seattle, Washington, and Tokyo, Japan, offices, where his practice focused on mergers and acquisitions, corporate, international and commercial transactions. While in Tokyo, Goeppele worked in-house at ITOCHU Corporation’s Tokyo headquarters from 1996 to 1998 on numerous international energy and infrastructure projects throughout the Asia-Pacific region.

Goeppele graduated with a Bachelor of Arts from Boston University in 1987 and a master’s degree from the University of Michigan in 1988. He earned his law degree from the University of Washington School of Law in 1991, Order of the Coif.

Jessica Harris

Chief Human Resources Officer

As chief human resources officer for TerraPower, Jessica Harris is responsible for shaping and driving the TerraPower organization people strategy so that the workforce, culture and organizational capabilities support our ability to deliver on the mission and on TerraPower’s long-term goals.

At TerraPower, Jessica leads the company’s people strategy and oversees all aspects of talent acquisition, total rewards, HR operations, employee experience, and organizational development. Jessica brings a strategic, data-driven approach to building scalable HR systems and driving team performance across TerraPower’s rapidly growing business lines.

With more than two decades of experience in human resources leadership, Jessica has guided organizations through significant growth, complex technical operations, and highly regulated environments. Prior to joining TerraPower, she held roles in both public and private organizations across industries of engineering, technology and insurance, where she implemented people-centered programs that strengthened capability, accountability, and culture.

Jessica is deeply committed to advancing a workplace where employees are empowered to deliver on the mission, demonstrate trust and integrity, and contribute to an environment of openness, respect, and collaboration. She is passionate about developing leaders, enabling teams to thrive in fast-paced project environments, and building systems that support employees through every stage of growth. Jessica graduated from Western Washington University in 1996 and obtained her Professional of Human Resources Certification in 2003.

Steven Hellman

Executive Vice President and Chief Financial Officer

Steven Hellman is Executive Vice President and Chief Financial Officer of TerraPower. He came to TerraPower after a 35-year career in investment banking, business and law. He has significant expertise and experience globally in mergers & acquisitions, public and private debt and equity capital raising, corporate restructuring and project and infrastructure finance.

Prior to joining TerraPower, Steven worked for over 25 years as an investment banker with Credit Suisse, UBS and other global investment banks in a variety of roles throughout the world. Most recently, Steven was Managing Director and Co-Head of UBS’s Energy Transition investment banking group.

Steven began his investment banking career in 1997 as a member of Credit Suisse’s Global Energy Group, working in New York, London and Moscow. He founded Credit Suisse’s Energy Services investment banking practice and advised on some of the landmark transactions in the sector. From 2007-2010, Steven was Credit Suisse’s Regional CEO and Head of Client Coverage, Russia/CIS, based in Moscow, where he advised international and domestic companies in the Energy and other sectors. From 2016-2018, Steven served as Chief Restructuring of FESCO Transportation Group and, from 2017-2019, as a member of the Board of Directors of Lenta, Plc.

Prior to his career in investment banking, Steven was Executive Vice President and Head of Business Development for UniSite, Inc, a wireless tower collocation company. Steven began his career as a business and finance attorney at Latham & Watkins, where he advised on the financing of communications satellites and worked on the launch of DirecTV.

Steven holds a Bachelor of Arts degree in Soviet Studies from the University of California, Berkeley and a J.D. from the University of California, Berkeley School of Law. He is a member of the Board of Trustees of the New Jersey Scholars Program.

Irene Hsieh

Senior Vice President, Finance and Accounting

Irene Hsieh is the senior vice president of finance and accounting at TerraPower. In this role, Irene leads a team responsible for government compliance, shareholder reporting, payroll, benefits, corporate planning and financial systems.

Hsieh has 25 years of experience across government compliance, international joint venture, fundraising, cost optimization, risk management and corporate strategic planning. In addition to financial and operational expertise, she has led various transformational initiatives such as the Enterprise Resource Planning (ERP) system transition.

Prior to TerraPower, Irene joined Intellectual Ventures as the controller where she was responsible for treasury, budget, forecast, audit, tax and financial reporting. Hsieh played a leading role in the spin out of TerraPower from Intellectual Ventures in 2012.

Prior to Intellectual Ventures, Hsieh spent nine years at a Kirkland, Washington- based venture capital firm OVP Venture Partners supporting the fund administration and operations of $750M assets under management as of controller/director of finance. There, she supported fundraising efforts and worked closely with portfolio companies to support their success.

She started her career at the PricewaterhouseCoopers Seattle office in the advisory business assurance practice. There, she led a team of staff responsible for planning and executing multi-location audits for global investment banks, venture capital firms, hedge funds, startups, universities, benefit plans and public and private companies supporting IPO and SEC filing.

Hsieh holds a Bachelor of Arts in Business Administration, accounting concentration at the University of Washington. She is a licensed certified public accountant (CPA) in Washington State.

Jeff Latkowski, Ph.D

SENIOR VICE PRESIDENT OF MOLTEN CHLORIDE FAST REACTOR

Jeff Latkowski is the senior vice president of innovation at TerraPower, where he is responsible for the origination, evaluation and development of high-risk, high-potential energy solutions within TerraPower. He is also responsible for the development and growth of partnerships that can facilitate the origination of new ideas and energy solutions.

Dr. Latkowski has more than 25 years of experience in the generation, analysis and evaluation of new ideas and designs for nuclear systems. He was previously employed by Lawrence Livermore National Laboratory (LLNL), where he most recently served as the chief scientist for the Laser Inertial Fusion Energy (LIFE) program. Prior to this, Dr. Latkowski held positions in LLNL’s Fusion Energy Program, Laser Program, and within the National Ignition Facility Directorate. His technical expertise includes systems engineering and design, neutronics, safety and environmental evaluation, x-ray physics, optics, and laser and fusion technologies.

Dr. Latkowski was the recipient of LLNL’s first Director’s Performance Award, which he received for defining and defending the environment, safety and health position of the National Ignition Facility, a $3.5B laser project that was under construction from 1997 to 2009. In 2009, Latkowski received the Fusion Power Associates Excellence in Fusion Engineering Award.

Dr. Latkowski received a Bachelor of Science in nuclear engineering from the University of Illinois at Champaign-Urbana and a doctorate in nuclear engineering from the University of California at Berkeley. He is a member of the American Nuclear Society and the American Association for the Advancement of Science, is named on approximately 20 patent applications, and is named as an author on nearly 100 journal articles and conference papers.

Jeffrey Miller

SENIOR VICE PRESIDENT, BUSINESS DEVELOPMENT

Jeffrey Miller is the senior vice president of business development at TerraPower, developing relationships, new business alignments and strategic partnership opportunities in the Natrium and TerraPower Isotopes programs. He has more than 20 years of industry and government experience in nuclear power, including advocacy, business development, strategy, policy, program, and project management.

Prior to joining TerraPower, Miller had established the Japan office of Centrus Energy, an enrichment company working to re-establish production in the United States with domestically owned, controlled and operated enrichment technology. In this capacity, he grew and maintained the company’s market share in low enriched uranium sales in Asia. While leading Centrus Japan, he was responsible for business generation, advocacy and relationship management in Japan and Asia at all levels. After returning to the United States, Miller served as the director of sales and marketing for Centrus Energy’s American Centrifuge Operations business unit, leading international customer engagements and strategic planning for new technologies and market approaches.

Earlier in his career, Miller supported the early stages of Fukushima Dai-ichi accident response on the U.S. Department of Energy Accident Response Team in spring 2011. Subsequently, from July 2011 to August 2016, he continued to support Fukushima’s recovery while serving as the director of the U.S. Department of Energy’s (DOE) Japan Office in the U.S. Embassy Tokyo, managing the office and representing DOE and its program offices in Japan at all levels, including on behalf of the secretary and deputy secretary in the nuclear, clean energy, security, science and environmental sectors.

Miller entered the United States government as a presidential management fellow in 1999. In addition to DOE, he also worked for the U.S. Department of State and the National Nuclear Security Administration on a range of national security and critical infrastructure protection programs. In addition, he worked for Battelle Memorial Institute at DOE’s Pacific Northwest National Laboratory where he managed radiation detection deployment projects in seaports and land border crossings throughout Southeast Asia and the Middle East.

Miller holds a Bachelor of Arts degree from Muhlenberg College, in Allentown, Pennsylvania. During his junior year of college Miller studied at Waseda University in Tokyo, Japan. He holds a Juris Doctorate from the University of Maryland School of Law and is licensed to practice law in the District of Columbia and the state of Maryland.

Andrew Richards

Vice President of Government Affairs

Andrew Richards is the Vice President of Government Affairs at TerraPower, where he leads the company’s policy and engagement strategy across federal, state, and international arenas. With more than 15 years of experience spanning both government and industry, he has built a career at the intersection of civil nuclear policy and nuclear energy advocacy, where he has focused on driving congressional, state, and international engagement, legislative development, regulatory strategy, intergovernmental collaboration, and policy implementation.

Before joining TerraPower, he served as Senior Vice President at Boundary Stone Partners, a consulting firm focused on clean energy, climate, and advanced technology policy. There, he led the firm’s Nuclear Energy Practice Group, advising advanced reactor developers, advocating before Congress and federal agencies, partnering with NGOs and think tanks, and collaborating with trade associations to shape federal and state civil nuclear policy.

Earlier in his career, Andrew spent over a decade in the U.S. Department of Energy’s Office of Nuclear Energy, where he held multiple senior roles, including Chief of Staff and Principal Deputy Assistant Secretary. He advised numerous Assistant Secretaries across several administrations, guided the office through two presidential transitions, and oversaw the execution of multi-billion-dollar annual appropriations. He was the primary interface to the White House, Congress, and federal agencies on civil nuclear energy issues.

During his tenure at the Department of Energy, he oversaw a broad portfolio that included the development of advanced reactors and next-generation fuels, preservation of the domestic nuclear fleet, international commercial nuclear cooperation, spent fuel and waste management, and the stewardship of the Idaho National Laboratory. He also collaborated with the National Nuclear Security Administration on nonproliferation policy, with NASA on space nuclear power initiatives, and with the Department of Defense on micro-reactor development. He regularly worked with Congress, state and tribal governments, NGOs, trade associations, and private industry to support the deployment of advanced nuclear technologies.

Andrew is a graduate of the University of Maryland and serves on the Board of Directors for UCAN Power and the Board of Advisors for Congressional Energy Engagement. He is also a member of the American Nuclear Society.

Philip Schloss

Vice President and Deputy Project Director, Natrium

Philip Schloss is VP & Deputy Project Director for the Natrium demonstration project.

Philip has over 18 years of experience in the nuclear industry mainly focused on the development of sodium-cooled fast reactors. He has a broad range of skills related to design and development of advanced nuclear reactors, management of engineering teams and projects involving many organizations, developing manufacturing technologies and commercial supply chains, project management, supplier oversight, and irradiation testing of nuclear fuels and materials.

Mr. Schloss holds a Bachelor of Science in Mechanical Engineering from Missouri University of Science and Technology and a Master of Science from the Georgia Institute of Technology.

Monica Tarqueno

Vice President, Operations

Monica Tarqueno is the Vice President of Operations at TerraPower. She joined TerraPower in 2020 as Director of Laboratory Operations, transitioned to the Senior Director of Nuclear Quality and Continuous Improvement, and took on her current role in Jan 2026.

Prior to joining TerraPower, Ms. Tarqueno held a Senior Reactor Operator license at Dresden Generating Station, where she also held positions in maintenance and planning before going on shift as an SRO. She served in the US Navy on USS Eisenhower (CVN-69) and USS Antietam (CG-54) after graduating from the US Naval Academy.

Bob Terry

Vice President, Commercial Supply Chain

Bob Terry is starting as our first Vice President, Commercial Supply Chain. In this new role, Bob will lead and oversee the entire supply chain lifecycle, from procurement and logistics to inventory management and distribution. This critical role will drive TerraPower’s supply chain strategy and support our efforts to rapidly scale our reactor business.

Bob has a robust background in supply chain and project management on nuclear projects across the globe with Westinghouse, ABB Combustion Engineering and most recently Framatome.

Bob served for many years as Project Director of Korean Nuclear Projects; leading project teams that successfully delivered 14 new build units, from start to finish, in support of Korea Electric’s standard plant nuclear program. He then served as the Global Director of Sourcing & Supplier Management for Westinghouse’s AP1000 for 10 years, and led teams responsible for sourcing, supplier project management and delivery of the full scope for 8 units of AP1000 nuclear plant equipment in the United States and China.

Bob then transitioned to Program Director for Westinghouse Accident Tolerant Fuel development with the U.S. Department of Energy, working closely with many U.S. National Labs and suppliers. Most recently Bob led projects for Framatome supporting I&C System upgrades for U.S. operating plants and Idaho National Labs.

Bob has a BS in Nuclear Engineering from SUNY Maritime College in New York and is a Boston University Certified Project Manager.

Michael Trayers

Vice President, Fuel Supply and Development

Michael Trayers is Vice President, Fuel Supply and Development - Natrium at TerraPower.

Michael brings over 20 years of experience in the nuclear industry with light water reactor technology. He rose through technical roles in process engineering, reliability engineering, and project management to lead global strategic projects.

Following the outbreak of conflict in Ukraine, he provided strategic oversight of manufacturing and supply chain execution to expedite the reliable delivery of nuclear fuel to the country. Michael also worked on the first US PWR transition to a 24-month operational cycle using advanced fuel technologies, the deployment of advanced fuel cladding, the first US PWR Lead Test Assemblies (LTAs) exceeding 5% enrichment, and the use of additively manufactured fuel components.

Prior to working in the nuclear industry, Michael spent 15 years in the manufacturing sector working on advanced stainless steel production and consumer electronic manufacturing using automation technologies.

Michael holds a Bachelor of Science in Mechanical Engineering from the University of Pittsburgh.

Mark Werner

Vice President, Plant Delivery – Natrium

Mark Werner is Vice President, Plant Delivery – Natrium at TerraPower. With 20 years of nuclear experience, Mark is a mechanical engineer who develops and leads engineering teams that design advance reactor concepts focused on impacting future energy markets. Mark has worked in plant layout and design, reactor system and equipment design, reactor core design and fuel design in his past positions. Mark has worked at TerraPower for more than 13 years solving challenges and key issues of designing an integral sodium fast reactor.

Before his time at TerraPower, Mark contributed to conceptual design, final design, and fleet support of several nuclear reactor platforms for the US Naval Nuclear Propulsion Program at Knolls Atomic Power Laboratory.

Mark holds master’s degree in Mechanical Engineering from Union College and a bachelor’s degree in Mechanical Engineering from Drexel University.

Eric Williams

Executive Vice President and Chief Operations Officer

Eric Williams is the Executive Vice President and Chief Operating Officer for TerraPower. In this role, he oversees the operations associated with TerraPower’s reactor projects, including Natrium, MCFR, Regulatory Affairs, Contracts, Facilities & Real Estate, Lab Operations, Quality and Continuous Improvement, and Procurement. Mr. Williams has 26 years of experience in the commercial nuclear industry and has spent the last 15 years developing new nuclear power plant designs, with an emphasis on safety. Mr. Williams holds a Bachelor of Science in Mechanical Engineering from the University of Florida, a Master of Business Administration from the University of Lynchburg and a Professional Engineer license.

Before coming to TerraPower, Mr. Williams spent four years at B&W mPower developing a new small modular reactor design and worked to develop the safety of the plant and take the design through pre-licensing with the U.S. Nuclear Regulatory Commission. He also led the development of an Integrated Systems Test facility, which was a small-scale, electrically powered version of the nuclear power plant used to demonstrate the safety characteristics of the plant during simulated accident scenarios.

Earlier in his career, Mr. Williams worked on another new reactor design where he led a team that analyzed potential severe accidents. He developed the analysis and documentation needed to license the design and took the severe accident analysis through the licensing process.

Prior to working on new nuclear reactor designs, Mr. Williams worked on making the current fleet of nuclear power plants in the U.S. more efficient by upgrading their equipment and modernizing their systems. He worked directly with electric power utilities and visited operating nuclear power plants to understand the issues they faced and helped develop solutions.

George Wilson

Senior Vice President, Regulatory Affairs

George Wilson is the senior vice president of regulatory affairs for TerraPower.

He has more than three decades of government and private-sector experience in the field of nuclear energy.

Prior to joining TerraPower, he served as a senior executive in the United States Nuclear Regulatory Commission (NRC), where he oversaw the licensing, oversight and enforcement of nuclear facilities.

Before working for the NRC, Wilson served in various capacities for the Tennessee Valley Authority at the Watts Bar Nuclear Plant, including operations and maintenance.

Wilson started his nuclear career as a member of the United States Navy, where he provided training, operations, and maintenance of the propulsion plant.

Pat Young

Senior Vice President and Natrium Project Director

In his role, Mr. Young leads a multi-billion-dollar advanced nuclear project, the Natrium Demonstration Project within the Department of Energy’s Advanced Reactor Demonstration Program, while also playing a key role in the development of future projects. His team is responsible for all aspects of project delivery, including plant design engineering, testing, licensing, procurement, construction, fuel, and readiness for operations.

Before joining TerraPower, Mr. Young spent 3 years working abroad both in Canada and the United Kingdom. While in Canada, Mr. Young served as the Vice President of Engineering leading both the development of the new CANDU Monark reactor design and multiple engineering activities required for deployment of the GE Hitachi SMRX-300 small modular reactor at the Darlington New Nuclear site. In the UK, Mr. Young led an engineering team at the Springfield Fuel Facility toward the development of ~1B GBP capital growth projects focused on reprocessed uranium utilization and the development of new fuel types and manufacturing facilities supporting new micro and SMR designs.

Prior to moving abroad, Mr. Young spent 13 years leading engineering efforts in nuclear fuel manufacturing and nuclear reactor deployment. In his role as the engineering director at the Columbia Fuel Fabrication Facility, Mr. Young was responsible for all engineering activities for capital growth and 24/7 operation of the manufacturing facility. In his role as executive director for site engineering, Mr. Young was responsible for all engineering issues and resolutions associated with the construction of the Westinghouse AP1000 reactor in Jenkinsville, South Carolina.

n his earlier career, Mr. Young worked in various engineering leadership roles supporting waste remediation at several DOE national sites. At the Hanford site, Mr. Young focused on tank waste remediation and characterization, defense reactor lay-up, and spent fuel management. At the Idaho National Lab, Mr. Young worked on the processing and packaging of legacy Three Mile Island reactor debris and the construction of the Advance Mixed Waste Treatment Facility. At the Nevada Test Site, Mr. Young worked toward the resolution and shipment of Transuranic waste out of Nevada for ultimate long-term storage at the Waste Isolation Pilot Plant in New Mexico.

Mr. Young holds a BS Mechanical Engineering from California Polytechnic State University, SLO, and a MS Mechanical Engineering from Oregon State University. He also has completed significant additional graduate course work in the areas of thermal/fluid sciences and nuclear engineering at the University of Wyoming, Virginia Polytechnic State University and University of South Carolina. Mr. Young has previously held professional engineering licenses in WA, ID, PA, GA, SC and Florida.

Sarah Young

Director of Communications and Marketing

Sarah Young is the Director of Communications and Marketing at TerraPower where she shapes the company’s voice and brand by leading the strategies that define how TerraPower communicates with customers, employees, partners, and the public. Sarah is a strategic communications and public affairs executive with more than 16 years of experience leading integrated marketing, media relations, stakeholder engagement, and executive communications initiatives across the energy, cleantech, healthcare, government, and nonprofit sectors.

Prior to joining TerraPower, Sarah was Vice President at Clear Strategy Partners where she led multi-channel communications campaigns, executive thought leadership strategies, and high-profile media engagement efforts for cleantech clients. Previously, she held leadership roles at Three Elephant Public Relations and the Wyoming Energy Authority, directing statewide communications strategies, public affairs initiatives, large-scale events, and stakeholder outreach programs. Her background also includes healthcare communications, political and issue advocacy campaigns, and sustainability-focused education and engagement programs.

Sarah holds a B.S. in Business Administration and a B.S. in Psychology from the University of Oregon.