Adjunct Professor, University of Michigan and former Commissioner and Chairman, U.S. Nuclear Regulatory Commission Age: 59 Director since: October 2021 Board committees: Business Security and Resiliency; Operations, Environmental and Safety Other public company directorships: Pinnacle West Capital Corporation and its wholly-owned subsidiary Arizona Public Service Company Director Highlights Ms. Svinicki s qualifications include nuclear energy and technology expertise and federal and state energy policy expertise. As a former Chairman of the U.S. Nuclear Regulatory Commission, she has vast experience and insight into nuclear regulation and generation, as well as environmental and cybersecurity matters. Her leadership skills, contributions to U.S. nuclear energy policies and extensive nuclear energy knowledge are of significant value to the Board. 4 Ms. Svinicki was appointed a member of the U.S. Nuclear Regulatory Commission, the federal agency responsible for regulation of nuclear reactor materials and safety, by three U.S. Presidents, becoming that organization s longest-serving member. She served as a Commissioner from 2008 until 2017 and as Chairman from 2017 to 2021. 4 Prior to her tenure on the U.S. Nuclear Regulatory Commission, she spent over a decade as a staff member in the U.S. Senate working on issues related to national security, science and technology and energy and the environment. She also served as a professional staff member on the Senate Armed Services Committee where she was responsible for the committee s portfolio of defense science and technology programs and policies, and for the atomic energy defense activities of the U.S. Department of Energy, including nuclear weapons, nuclear security and environmental programs. 4 Previously, Ms. Svinicki served as a nuclear engineer in the U.S. Department of Energy s Washington, D.C. offices of Nuclear Energy, Science and Technology, and of Civilian Radioactive Waste Management, as well as its Idaho Operations Office, in Idaho Falls, Idaho. 4 She serves on the Board of Pinnacle West Capital Corporation (NYSE: PNW), an Arizona energy company, and is a member of the Audit, Finance and Nuclear and Operating Committees. She also serves on the Board of Pinnacle West Capital Corporation s principal subsidiary, Arizona Public Service Company. 4 Ms. Svinicki is a longstanding member of the American Nuclear Society and serves on the Board of TerraPower Holdco, a nuclear innovation company. 4 She currently serves as an adjunct professor of nuclear engineering and radiological sciences at the University of Michigan.