Gary Trigueiro became a partner in Zirkle Long, Trigueiro and Ward in1986.  In 2006, Zirkle Long Trigueiro and Ward merged with Isler CPA and Gary continued  with Isler as a partner.  

Gary graduated from the University of Nevada, Reno (B.S., with distinction, 1969) and Boalt Hall School of Law, University of California at Berkeley (J.D., 1972). Gary started his career with Touche Ross & Co. in San Francisco and has been a Certified Public Accountant since 1975. He is a member of the Oregon State Bar and the State Bar of California.

Gary specializes in tax planning and compliance, business valuations and litigation support. He holds the ABV business valuation credential issued by the American Institute of Certified Public Accountants. The ABV credential has been issued since 1998 to qualified professionals who pass a written examination and satisfy the experience requirement. Gary was a member of the initial group of ABV designees.

Gary is the Assistant Meet Director of the Prefontaine Classic, an IAAF Super Grand Prix track & field meet, and is an honorary life member of Oregon Track Club.