He is the Managing Partner of the Firm.

He was a former audit staff member of Joaquin Cunanan & Co. which later became Isla Lipana & Co., now Price Waterhouse & Co. From 1964 to 1969, he was a senior staff member when he moved to the Tax Department of said Audit Firm. In the second half of 1969, he became a Tax Manager of the said Audit Firm. He retained this position until he joined A. M. Sison, Jr.& Associates in organizing the Firm.

He holds Bachelor’s Degree in Law and Business from the University of the East and completed all the academic requirements for a Master’s Degree in Business Administration from Ateneo de Manila University, Senior Executive Program.

He is both a Lawyer and a Certified Public Accountant. He was the past president of the Tax Management Association of the Philippines (TMAP) and was a team leader in the group that conducted management audit of the BIR in 1992 on orders of former President Fidel Ramos. As President of TMAP, he headed the Philippine panel of tax consultants that participated in the conference/dialogue held in Tokyo, Japan (November 5-9, 1992) regarding the tax systems and practices in the Asia-Oceania region sponsored by Japan Federation of Certified Public Tax Accountants Association. The conference/dialogue led to the organization of Asia-Oceana Tax Consultants Association (AOTCA) where TMAP became a charter member.

He was the former Corporate Secretary and Legal and Tax Advisor of Sara Lee Group of Companies including Metrolab Inc. and Hanesbrands Philippines, Inc. He has vast experience in merger and corporate re-organization, spin-off of divisions of a corporation and organizing the same into separate corporation.

He is a past director and auditor of the Rotary Club of Makati Guadalupe, a member of the Philippine Bar and Philippine Institute of Certified Public Accountants (PICPA) and former member of Association of CPAs in Public Practice (ACPAPP).

He handles tax cases before the BIR, Court of Tax Appeals and Supreme Court. He currently serves as corporate secretary of several companies.