Contact Leon Aslan Coskun

Leon Aslan Coskun Chairman

Profession: CPA

Position in the Company: Chairman of the Board of Directors

Key Qualifications:

  • Founded Denge Denetim SMMM A.Ş., 1977
  • Currently serves as the Chairman of the Board of Directors.
  • Established the revision department of Denge Denetim SMMM A.Ş. and initiated an effective format to facilitate and systemize work, 1984.
  • Founded the Management Consultancy Department of Denge Denetim SMMM A.Ş., 1989.
  • Established computerized cost accounting systems for industrial companies operating in various leading sectors of Turkey.
  • Opened branches to develop auditing and revision services, enabling Denge to be the first accounting firm to operate in 4 major cities, 1994-1996.
  • Joined Mazars in the capacity of a partner, 1998.
  • Wrote professional articles in newspapers and journals and participated in numerous international seminars as a lecturer.

Professional Background:

  • Sworn Financial Advisor, 1990-
  • Provided accounting and tax consulting services to numerous companies, and founded Denge, CPA, 1977-1989
  • CPA, 1968-1977


  • Member of the Board of Directors of Turkish Independent Audit Association
  • İstanbul Chamber of Sworn Financial Advisors
  • Member of the Board of Directors of Turkish Account Experts Association
  • Turkish French Trade Association- member of Board of Directors


  • Prepared a guide for companies operating in Turkey with foreign shareholders in both French and English.


  • Marmara University, Economics, İstanbul, Turkey, 1967


  • English
  • French
  • Spanish

Curriculum vitae