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Thomas W. CorbettChairman and Chief Executive Officer
Thomas Corbett serves as Chairman and Chief Executive Officer of Alliant Insurance Services, Inc. In addition, he sits on the company's board of directors. Corbett joined Alliant in 1977 as a producer and launched its Newport Beach-based Public Entity Group. Prior to joining Alliant, Corbett was with Allendale Insurance in Los Angeles and spent three years as a loss prevention engineer at Factory Mutual Engineering Association. Corbett is a graduate of California State University, Long Beach. He is currently involved in various community and charitable organizations.
Greg ZimmerPresident
Greg Zimmer serves as President of Alliant Insurance Services, Inc., and is a member of the company’s board of directors. In conjunction with other members of senior management, Zimmer is responsible for implementing the strategic direction of the firm. He also is responsible for corporate operations and all mergers and acquisitions activity. Prior to joining Alliant in 1998, Zimmer and his partners built a significant financial services firm that ultimately was sold to GMAC, where he served as Senior Vice President. His career also includes corporate finance and venture capital experience while serving as Vice President at Security Pacific, which ultimately merged with Bank of America. Zimmer holds a bachelor’s degree in economics/systems science from the University of California, Los Angeles (UCLA) and a master’s degree from the Anderson Graduate School of Management at UCLA.
Peter CarpenterChief Operating Officer
In his role as Chief Operating Officer of Alliant Insurance Services, Inc., Peter Carpenter is responsible for managing all day-to-day aspects of the company’s operations and directing its leveraged hire strategy, which is dedicated to attracting the industry’s best and highest performing sales professionals. Carpenter has more than 25 years of experience in the insurance industry and joined Alliant in 2008 when it acquired ClearPoint, a Seattle-based employee benefits consulting firm that he co-founded and where he served as CEO. Prior to founding ClearPoint, Carpenter served as vice president of sales and marketing for a large regional insurance brokerage firm and as a group representative for Sun Life Insurance Company. He earned a bachelor’s degree from Colby College in Waterville, ME, where he majored in government and Spanish.
Ilene AndersChief Financial Officer
Ilene Anders serves as Chief Financial Officer of Alliant, overseeing the company’s finance, accounting, and IT operations. Anders brings a multidisciplinary approach to the position well-suited for an industry where the worlds of finance and technology continue to merge. She previously served as Alliant’s Chief Information Officer, where she created the vision for client-facing technologies, directed business intelligence, and oversaw the integration of systems and infrastructure. Prior to that, Anders was Alliant’s Vice President and Director of Financial Planning and Analysis. She also has experience in investment banking and corporate development with Prudential Volpe Technology Group, GMAC-RFC, and has served as a strategic consultant to start-up organizations. Anders holds a master’s degree in business from San Diego State University and a bachelor’s degree in finance from Boston University.
Ralph HurstPresident, National Brokerage Group
Ralph Hurst serves as President of the National Brokerage Group for Alliant Insurance Services, Inc., and is a member of the company’s executive committee. He has played a central role in the establishment and management of several of the firm’s major programs, including the Public Entity Property Insurance Program (PEPIP), the Hospital All Risk Property Program (HARPP), and the Tribal Property Insurance Program (TPIP). Hurst joined Alliant in 1987 as a producer after a 10-year tenure with the Factory Mutual Group. He earned a bachelor’s degree in industrial technology-fire science from California State University, Los Angeles.
James CrystalVice Chairman
James Crystal is Vice Chairman of Alliant Insurance Services, Inc. and has served as a trusted advisor to many of the nation's foremost entrepreneurs, executives, and investors over a career spanning more than 50 years. Most recently, Crystal was Chairman and Chief Executive Officer of Crystal & Company prior to its 2018 acquisition by Alliant. After joining his father, Frank Crystal, in 1961, Crystal was named President in 1963. Under his leadership, Crystal & Company grew far beyond its original roots on Wall Street to serve a global clientele. Crystal serves as a Vice Chairman, Trustee, and Board Member of the Executive and Finance Committees and Co-Chairman of the Audit Committee of Mount Sinai Medical Center, as well as serving on the Boards of Directors of K2 Global Consulting and Ennia Caribe Holding, NV. Crystal has also served on the boards of Global Indemnity, Blockbuster, Stewart & Stevenson, and Donkenny.
Diana KiehlChief Administrative Officer
Diana Kiehl serves as Chief Administrative Officer of Alliant Insurance Services, Inc. In this position, she partners with key executives to broaden sales and service best practices within the company’s numerous specialty groups and practices. In addition, she oversees the company’s corporate risk management and professional development departments. Kiehl also is the executive sponsor for the national philanthropy program and leadership development program. She joined Alliant in 1991 as an associate producer and was promoted to producer in 1993, helping to build such specialty programs as the Owner-Controlled Insurance Program (OCIP) and the Hospital All Risk Property Program (HARPP). Subsequently, she held several management positions with the company, and in 2006 was promoted to Managing Director of Brokerage Services. Kiehl earned a bachelor’s degree from California State University, Long Beach, a master’s degree from Pepperdine University, and attended Wharton’s Management Education Program.
Peter ArkleyPresidentAlliant Specialty Group
Peter Arkley serves as President of Alliant Specialty. He is responsible for development and implementation of the specialty business and financial strategy. Alliant Specialty includes Aviation, Agribusiness, Construction, Environmental, Financial Institutions, Healthcare, Management Liability, Marine and Energy, Mergers and Acquisitions/Transactional Liability, Public Entity and Real Estate operations.
Arkley joined Alliant Insurance Services, Inc. in 2011 and brought together the premier construction risk management talent in the United States. Prior to joining Alliant, Arkley served as Chief Executive Officer of the construction operations at Aon, an international insurance brokerage firm. Prior to joining Aon in 1994, Arkley held senior executive positions with Marsh & McLennan and Johnson & Higgins in New York and Los Angeles. He began his career in 1977 with American International Group where his central focus was financial services products such as directors and officers and fiduciary liability insurance.
Sean McConlogue, ARMPresident, Alliant Underwriting Solutions
Sean McConlogue serves as President of Alliant Underwriting Solutions and has more than 20 years of experience in the insurance industry, with particular emphasis on specialty program development. Before joining the company in 2003, McConlogue served as President of Affinity Insurance Services, LLC, and prior to that held senior-level management positions with Tristar Insurance Services, Arthur J. Gallagher & Co., and Xerox Corporation. McConlogue earned a bachelor’s degree in economics from the University of California, San Diego and a master’s degree in international management from Thunderbird, The American Graduate School of International Management.
Kevin OverbeyPresidentEmployee Benefits Group
As President of Alliant’s Employee Benefits Group, Kevin Overbey directs the ongoing growth and expansion of the national division. Since 2010, Overbey’s leadership in Alliant’s collaborative culture has cultivated the division’s remarkable growth from $100M to $600M while expanding its footprint to serve local regions across the nation. With 30 years in the employee benefit services industry and experience with a wide span of both domestic and international clients, Overbey leads the division with a compelling vision in pursuit of healthcare delivery transformation through data-driven value and efficiency. This vision propels Alliant’s teams to help employers drive innovation and service while engaging their people to drive sustainable outcomes. Prior to joining Alliant, Overbey was a founding and managing partner of ClearPoint (acquired by Alliant in 2008), an employee benefits consulting and brokerage firm, and one of the largest privately held insurance brokers in the Pacific Northwest. Overbey is a graduate of Oregon State University.
Bob BennetsenExecutive Vice President, Senior Managing DirectorAlliant Americas
Robert Bennetsen serves as Executive Vice President and Senior Managing Director of Alliant Americas, the company’s dedicated middle market platform providing targeted insurance, risk management, and consulting services to midsized businesses throughout the United States. Bennetsen has a diverse insurance background that spans both the carrier and brokerage sides of the business. He previously served as Executive Vice President and Managing Director of Alliant Employee Benefits, overseeing its Northeast operations. Prior to joining Alliant, Bennetsen held leadership positions directing sales and account management activities for two of the nation’s largest healthcare providers. He earned a bachelor’s degree in economics from Central Washington University.