W. Mark Shirley, CPA
President & Founder
Prior to forming WM Shirley, Mark was with Arthur Andersen's Audit & Business Advisory Practice for 14 years (80-94), starting in the Houston Office in 1980 and as a Partner in the Toronto, Canada Office (87-92) before returning to the Houston Office.
Mark served on and led many Audit & Business Advisory engagements within a diverse base of clients including Texaco, Mitchell Energy, American Exploration, Estée Lauder, Canadian Gypsum Corporation (a subsidiary of USG, the largest wallboard maker in North America), Thomson SA Consumer Electronics (RCA/GE)-Canadian Division, Royal Doulton-Canada, and many others. Mark was also active in recruiting and business development at Andersen; one year Mark had seven (7) first time through audits.
Mark is also very active in the Houston
community serving or participating in the following organizations:
Community Involvement

- Houston CPA Society- Vice Chair for the Make-A-Wish Golf Tournament since 2000; Founder and Past Chair of the Northwest Satellite Group; Past Public Relations Committee Member; and Recipient of the following Houston CPA Society Awards: Outstanding Committee - Annual Golf Classic (2003-2004), Distinguished Public Service (2002-2003), Presidential Citation (2001-2002) and Outstanding Public Relations (2000-2001)
- Texas Society of CPAs- Member
- AICPA– Member
- Houston Livestock Show & Rodeo– Life Member & Ticket Services Committee Captain
- Association For Corporate Growth– Member
- The 100 Club- Life Member
- Metropolitan Baptist Church- Past Men's Ministry Director (2004-2007), and Sunday School Director (2001-2004)
- Connecting Businessmen to Christ ("CBMC")- Past Greater Houston Prayer Breakfast Committee (1999-2002)
- Cypress-Fairbanks Educational Foundation- Past Trustee - Executive Committee & Past Golf Committee Chair
- Miracle Farm in Brenham- Past Houston Development Council Member
- Cy-Fair Lacrosse Association- Past President, Ironmen Varsity Boys and Iron Eagles Middle School Boys
- KSBJ 89.3 FM- Past Board Member and Secretary-Treasurer