Board Members


Bob Williams, ARMB Chair/ Chair of Defined Contribution Plan Committee, was appointed by Governor Walker in March 2016 and reappointed by Governor Dunleavy in March 2020. Bob Williams was born and raised in Palmer, Alaska. He began his teaching career as a Peace Corps teacher in Gambia, Africa. He then taught for more than two decades as a secondary mathematics teacher in Alaska with more than a decade of experience teaching AP Calculus. He is a nationally board-certified teacher and the recipient of both the Presidential Award for Excellence in Mathematics Teaching and the Horace Mann Teaching Excellence Award. He was the Alaska 2009 Teacher of the Year and was inducted into the National Teachers Hall of Fame in 2017. Mr. Williams has a B.S. in Petroleum Engineering, an M.A. in Mathematics Education, an M.Ed. in Educational Leadership, and a Ph.D. in Public Policy and Administration. Mr. Williams also serves as Chair of the ARMB Defined Contribution Plan Committee.

Sandra K. Ryan, Vice Chair/ Chair of Actuarial Committee was a teacher of mathematics and computer science in the Fairbanks North Star Borough School District since 1994. She served as a member of the District’s curriculum committee, an advanced placement teacher in both AP Computer Science and AP Statistics, on two school Accreditation Committees, on the Education Excellence for Teachers and Students Committee, and President of the Fairbanks Education Association representing over 800 certificated professionals. Ms. Ryan is a new local presidents’ trainer for the National Education Association and a member of Alpha Delta Kappa. She holds a B.S in Communications from the University of Texas at Austin, a B.S in Mathematics from St. Edward's University, and an M.S in Computer Science—Software Engineering from the University of Alaska Fairbanks.

Michael Williams Secretary/ Chair of Audit Committee was appointed by Governor Dunleavy in March 2022. He previously served on the board from 2005 to 2012. He works for the Alaska Department of Revenue as a Revenue Audit Supervisor, managing the State’s corporate income tax program. He also serves as Secretary/Treasurer for the Supervisory Unit of the Alaska Public Employees Association, and since 2005 has been the treasurer for the Pacific Health Coalition, a private health coalition representing 250,000 members through public and private unions and small businesses. He is an avid reader and travel enthusiast. Michael holds a B.A. in Accounting and a Master of Taxation from Weber State University. He is professionally licensed as an Enrolled Agent.

Dennis Moen, Chair of Operations Committee was appointed by Governor Dunleavy in 2020. He is a retired Facility Manager for the State of Alaska, Department of Transportation & Public Facilities, Northern Region. Mr. Moen established and managed a multi-million-dollar annual operating budget. Supervised over 50 employees. Developed an annual budget for over 400 state owned facilities and was the Contracting Officer for 100’s of state vendors. Fourteen hours after retiring from the State of Alaska, he went to work for the Public Employees Local 71 Laborer’s Union. He was elected as Business Manager/Secretary Treasurer in 2012. As Business Manager, Mr. Moen represented 2400 members statewide. He developed a multi-million-dollar budget and provided fiduciary oversight of Local 71’s operating budget. Dennis directed investment bankers and economic consultants for PE Local 71’s Health Trust Fund. He also oversaw actuarial analysis and audits. Mr. Moen was concurrently Business Manager/Secretary Treasurer for Alaska District Council of Laborers for three Alaska Laborer Locals. He was also the Vice President of the Pacific Health Coalition (PHC), a private health coalition representing 250,000 members through public and private unions and small businesses.  Mr. Moen lived and raised his 2 children in Fairbanks, Alaska for 40 years. He is a private pilot, a Coast-Guard Captain for 100-ton vessels and since his retirement from the Union in 2019 enjoys commercial fishing in Southeast Alaska.

Lorne Bretz was appointed by Governor Dunleavy in March 2019. Mr. Bretz immigrated to Alaska in 1992, and with its vast beauty, it quickly became home. Volunteering in the community, hiking and off-road adventuring are some of Lorne's favorite hobbies. Mr. Bretz is the Plan Administrator for the Municipality of Anchorage Retiree Medical Funding Program Trust for Police Officers and Firefighters. He has a Master's in Business Administration, a Retirement Plans Associate designation and is a Certified Financial Planner professional. He has a passion for finances and a desire to support the needs of retirees and future retirees of the state he calls home.

Adam Crum is the Commissioner of the Department of Revenue, appointed by Governor Dunleavy on November 16, 2022. He previously served as commissioner at the Alaska Department of Health. Mr. Crum was born and raised in Alaska and has experience in the private sector in strategic management, organizational development, executive consulting and working on mega-projects. Prior to his tenure with DHSS, he was executive vice president of his family's company, Northern Industrial Training. He is also active in community organizations and has served as a board member for groups like the Salvation Army and MyHouse.  He has a bachelor's degree in psychology from Northwestern University and a Master of Science in Public Health from Johns Hopkins University. 

Donald Krohn was appointed by Governor Dunleavy in March 2021. He began his career in law enforcement more than 45 years ago with a four-year stint in the Air Force. From there, he joined the U.S. Customs Service in Chicago, working on narcotics interdiction. In 1979, he was transferred to Anchorage and after five more years working in inspections and intercepting drug traffic, he joined the Anchorage Police Department. Mr. Krohn worked for several years at the department as a detective specializing in white-collar crime. He was then promoted to the major crime's unit. He finished his 18 years at APD working major crimes and as a homicide detective. In January 2002, he joined First National Bank Alaska as Security Officer. During his first three years at the bank, he developed and implemented programs that resulted in an 80 percent reduction in successful criminal attacks against the bank and its customers. He retired in May 2020. Mr. Krohn also holds a B.S. in Occupational Education, with a minor in Criminal Justice from Wayland Baptist University. 

Spencer Moore was appointed by Governor Mike Dunleavey in June of 2023. He currently works in finance for a non-profit in Anchorage and is also a commercial fisherman out of Bristol Bay, Alaska. He attended Liberty University in Lynchburg, Virginia and graduated in 2014 with a Business Degree. There he met his wife and moved to Alaska in 2014 and together they have 4 children. He has a background in construction, church ministry and accounting. He is a Ramsey Certified Financial Coach and has taught personal finance for high school students, and inmates in Alaska as a volunteer chaplain. He enjoys playing or coaching basketball and ATV riding around our state. He is excited about serving the state of Alaska on the ARM Board, and ensuring all retirees can retire with dignity.

Paula Vrana is the Commissioner of the Department of Administration, appointed by Governor Dunleavy on September 30, 2021. She served as deputy commissioner of the department since January 2019. Commissioner Vrana is an attorney and lifelong Alaskan, her family roots in Southeast Alaska date back to early World War II years in Skagway. She practiced law at the law firm of Brena, Bell & Clarkson and has served as the Chief Executive Officer of Copper River Native Association as well as Executive Director of Hospice of Anchorage.