Seth P. Marty, Jr., CPA

“In a world where customer service is often forgotten, my priority is to ensure my clients are always taken care of. Providing them with the attention they need and the respect they deserve will set the foundation for a successful relationship. The basic essence of my daily business interactions is to treat clients with the same enthusiasm and dedication I would want for myself.”

Seth P. Marty, Jr., CPA


Seth joined Lohman Company in 2002 as a manager. Putting to use his industry expertise and commitment to client service, he has since risen to his current position as partner and leader of the assurance department. He is also a member of the Executive Partner Group and the Senior Management Group. In addition to providing leadership to the Lohman team and client consulting, Seth provides expertise in the areas of construction, technology, manufacturing, distribution, hospitality, service, healthcare and not-for-profits.

A graduate of Northern Arizona University, Seth has over 20 years of professional experience in the field. Prior to joining Lohman Company, he spent seven years with a national CPA firm managing assurance services and preparing individual and business tax returns. In addition, Seth has been a member of Northern Arizona University’s Accounting Advisory Council for over 15 years and is a past president of the council. Seth also enjoys sharing his experiences by participating in both ASCPA and NAU career panels.

With a proven track record of client satisfaction, Seth attributes his success to a strong work ethic, top notch service standards and being an advocate for his clients. He was inspired to go into the accounting field by his grandfather, who was also a CPA, and by the logical nature of accounting.

Raised in Southern California, Seth currently resides in Gilbert, Arizona with his wife, who is also a CPA, and their two sons. Away from the office, he is an avid sports fan and enjoys playing sports with his two sons. Seth also enjoys wakeboarding, fishing, and camping on Arizona’s many lakes.


  • Certified Public Accountant (CPA) – Arizona


  • American Institute of Certified Public Accountants (AICPA)
  • Arizona Society of Certified Public Accountants (ASCPA)
  • Northern Arizona University Accounting Advisory Council
    • President, 2006 – 2007
  • Mesa Chamber of Commerce
  • Grand Canyon University Accounting Advisory Council


  • Northern Arizona University, B.S., Accountancy, magna cum laude