Pat O'Brien

Guaranty Bank and Trust Company

Pat O'Brien is the market president for Guaranty Bank and Trust in Boulder, where he started in 2009.

O'Brien began his banking career in 1983 as a credit analyst at Fidelity Bank of Denver and then worked for ten years with Colorado National Bank in Boulder. He was promoted to vice-president/loan manager for his last five years at the bank. In 1995, O'Brien joined Wells Fargo bank in Boulder as a team leader. He was promoted to senior vice-president in 2000. In 2007, O'Brien took on the additional role of community bank president with responsibilities for retail and business banking in Boulder, Broomfield and Longmont. In 2008, he was promoted to business area manager for Northern Colorado.

O'Brien is committed to community involvement and has been active with the Boulder Chamber of Commerce, Boulder Area Buff Club, Boulder Economic Council, YMCA of Boulder Valley, I Have a Dream and the Longs Peak Boys Scout Council.

O'Brien graduated from Western Michigan University with a bachelor's degree in marketing and finance, as well as a holder of a master of science degree in finance from the University of Colorado.