Aoyama Sogo Accounting Firm Co. Ltd.
an independent member firm of PrimeGlobal

Board Members

Kazuhiro Matsuzawa

Founding Partner / Representative Director and Chairman
Born in 1967 in Matsuyama City, Ehime Prefecture

Japan Certified Public Accountant / Certified Public Tax Accountant
AERS (Association for Real Estate Securitization) Certified Master
Small and Medium Enterprise Agency Approved Support Organization
Ministry of the Environment Carbon Accounting Basic Advisor
Member of Japan Association of Corporate Executives

Notable Publications/Contributions

Understanding Accounting Department Functions through Illustrations. Revised edition (Joint author, Published April 2024, JMA Management Center)
Accounting News July 20, 2005 edition / No.1089 Trends and Analysis of Real Estate Securitization and related Tax and Accounting Issues (Chuokeizai-sha, Inc.)

Professional Career

March 1990: Graduated from Meiji University (School of Commerce)
October 1990: Joined Deloitte Touche Tohmatsu LLC
March 1994: Registered Certified Public Accountant
August 1999: Founded Aoyama Sogo Accounting Firm
April 2005: Founded Aoyama Sogo Tax Corporation (a separate entity for tax practice)
Became Representative Director
November 2013: Became CEO of ASA
October 2018: Became Chairman of ASA
April 2021: Became Representative Director of ASA Reporting Professional K.K.

Masaki Aguni

Founding Partner / Representative Director and Chief Executive Officer
Born in 1970 in Naha City, Okinawa Prefecture

Japan Certified Public Accountant / Certified Public Tax Accountant
AERS (Association for Real Estate Securitization) Certified Master
Adjunct Professor at Showa Women’s University, Accounting and Finance in Global Business Department
External Corporate Auditor of FANTAS technology K.K.
External Corporate Auditor of Tokyo Gas Real Estate Investment Advisory Co., Ltd.
Auditor of GLP Foundation
Auditor of Japan-Africa Baseball & Softball Foundation
Auditor of Hands on Tokyo (approved specified NPO)

Notable Publications/Contributions

Understanding Financial Statement Accounts and Journal Entries (Joint author, Published 1999, JMA Management Center)
Accounting News July 1, 2004 / No.1054 / Securitization of Accounts Receivables in Fund-raising　(Chuokeizai-sha, Inc.)

Professional Career

March 1993: Graduated from Keio University, Faculty of Law
October 1993: Joined Deloitte Touche Tohmatsu LLC
April 1997: Registered Certified Public Accountant
August 1999: Founded Aoyama Sogo Accounting Firm
April 2005: Founded Aoyama Sogo Tax Corporation (a separate entity for tax practice)
Became Managing Director
November 2013: Became Executive Vice President of ASA.
October 2018: Became CEO of ASA.
April 2021: Became Director of ASA Reporting Professional K.K.
June 2021: Became Representative Director of ASA Advisory K.K.

Hirohide Sato

Director
Born in Tokyo

Hirohide Sato is the Director of Aoyama Sogo Accounting Firm. In 2016, he joined ASA as a managing member in charge of Strategic Planning and HR and General Affairs.
Prior to ASA, he spent 15 years at a U.S. real estate fund and a business investment fund and now invests in several companies of his own. In addition to consulting for SMEs, he serves as an executive of several companies.

Keiko Ikeda

Corporate Officer
Certified Tax Accountant
From Tokyo Prefecture

Keiko Ikeda is a Corporate Officer of Aoyama Sogo Accounting Firm. Since joining in 2004, her numerous roles include securitization of real estate and financial assets, operational management, legal compliance, and accounting. She became Corporate Officer in 2021 and is in charge of the company’s quality control and efficiency. Prior to ASA, she worked in sales and accounting at an automotive leasing company.

Jun Murata

Corporate Officer
From Fukushima Prefecture

Jun Murata is a Corporate Officer of Aoyama Sogo Accounting Firm. Since joining in 2016, he has served both corporations and individuals in tax compliance, accounting, tax audit support, and various management consulting services. He is charge of the company’s management strategy.
Prior to ASA, he worked in education and accounting.

Kenichi Shimizu

Corporate Officer
From Gunma Prefecture

Kenichi Shimizu is a Corporate Officer of Aoyama Sogo Accounting Firm. Since joining in 2016, he has provided tax and accounting consultation and ongoing management of real estate securitization SPCs. He became Corporate Officer in 2022. Prior to ASA, he worked in the electrical equipment and accounting industries.

Ayumi Gennai

Corporate Officer
From Tottori Prefecture

Ayumi Gennai is a Corporate Officer of Aoyama Sogo Accounting Firm. Since joining in 2017, she has been involved with HR and personnel affairs. She became Corporate Officer in 2022. Prior to ASA, she worked for a consulting firm that dealt with hotel turnarounds and hotel management. After that, she was in an HR role at a shared service provider of HR, accounting, and finance.

Toshihiko Hatta

Executive Manager
From Nagano Prefecture

Toshihiko Hatta is an Executive Manager of Aoyama Sogo Accounting Firm. Since joining in 2007, he has capitalized on his prior experience as an originator in the financial services industry, and is involved in all aspects of ASA’s financial asset securitization SPCs. He is in charge of promoting better work style practices.

Yua Maekawa

Executive Manager
From Kanagawa Prefecture

Yua Maekawa is an Executive Manager of Aoyama Sogo Accounting Firm. Since joining in 2005, she has been involved in ongoing management services for SPCs of securitized financial assets and real estate. She became Executive Manager in 2022. Prior to ASA, she worked in the travel industry.

Kota Toba

Executive Manager
CFP
From Kanagawa Prefecture

Kota Toba is an Executive Manager of Aoyama Sogo Accounting Firm. Since joining in 2015, he has been involved with services for financial asset securitization SPCs and all PE fund services. He became Executive Manager in 2022. Prior to ASA, he worked for a brokerage firm where he handled back office, system planning, and corporate planning.

Tetsuya Nakamoto

Corporate Auditor
Born in Fukuoka prefecture

Since joining Aoyama Sogo Accounting Firm in July 2007, he has been involved in accounting and finance. He was appointed as Corporate Officer in June 2022. Prior to ASA, he worked 3 years in finance and accounting at a construction material manufacturer and later at several companies performing IPO preparation.

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