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Corporate Profile

Company Name



March 2005 (changed company name in March 2018)

Fiscal Closing



303million yen

Listed Market

Tokyo Stock Exchange Growth(Securities code : 9250)


President Yoshikazu Sasaki


Head Office:
5F Palace Building, 1-1-1 Marunouchi, Chiyoda-ku, Tokyo, Japan

Yokohama Global Center:
11F JPR Yokohama Nihon Odori Bldg, 17 Nihonodori, Naka-ku, Yokohama-shi, Kanagawa, Japan

Hong Kong Branch:
Unit A,15/F Boton Technology Innovation Tower, 368 Kwun Tong Road, Kowloon, Hong Kong

Number of Employees

202 ※ Consolidated as of November 30, 2023

Main Business

GRC/Security Solutions


Worker dispatching undertaking (派13-311240)

Fee-charging employment placement business (13-ユ-312256)


PCI DSS Qualified Security Assessor


ISMS:ISO/IEC 27001:2013・JIS Q 27001:2014


Digital Risk Association(Director)

Japan Card Data Security Consortium (Steering Committee Member)

PCI DSS AWS Users Consortium Japan (Committee Member)

Nippon Computer Security Incident Response Team Association

Board of Directors

Yoshikazu Sasaki

Born in Iwate Prefecture in 1976. In 2002, he joined Hewlett-Packard Japan Co., Ltd. and engaged in security consulting. In March 2005, he established Frontier X Frontier Co., Ltd. (currently GRCS Inc.) and became the President. Started business in 2009 as a pioneer specializing in GRC (Governance, Risk, Compliance). In 2013, the security business was launched, listed on the Tokyo Stock Exchange Mothers in 2021, and moved to the Tokyo Stock Exchange Growth Market in 2022. Graduated from the University of Southern California Department of Computer Science in 2001 and completed the Executive Program at Stanford University Business School (2022).

Takuya Tsukamoto

After graduating from the University of Southern California, Department of Computer Science, Takuya joined NEC Soft (now NEC Solution Innovator) and engaged in mobile phone development. After participating in GRCS in 2009, he was in charge of consulting and product development for GRC and security business mainly in the finance, communications and manufacturing industries. Director in charge of Technology.

Ikue Tanaka

She started work at a domestic independent consulting firm. After that, she participated in the founding of AGASTA Co., Ltd. and went public. In May 2014, she became a director of GRCS. In charge of Administration Division.

Keiichi Kubo
Outside Director

After gaining experience in supporting stock listings at Tohmatsu Audit firm, he started a risk consulting business and expanded the organization from 15 to 450 people. Served as a board member of Deloitte Tohmatsu Risk Service Co., Ltd., he also participated in government committees such as the Advisory Committee for Natural Resources and Energy and the Nuclear Facility Safety Information Declaration Investigation Committee.

Osamu Yamano
Outside Director

After working at AT & T Bell Laboratories in the US, Yokogawa-Hewlett-Packard (currently HP Japan), and Autodesk, participated in the establishment of Computer Associates (currently CA Technologies). After that, he was the president of RSA Security, EMC Japan, McAfee, and the president of Akamai Technologies GK from 2019, leading the business. He is currently a visiting professor and information security advisor at the University of Electro-Communications.


Koshi Oizumi
Corporate Auditor

Yasuo Shimada

Shino Asayama

Executive Officers

Taku Tokunaga
Executive Officer

After graduating, he worked as a security consultant at Hewlett-Packard Japan. Contributed to the top market share by consulting on domestically developed security products, planning products, and formulating strategies. After that, he joined GRCS in 2016 and assumed responsibility for product and solution planning and development.

Atsushi Mochizuki
Executive Officer

Joined DEC Japan as a new graduate and was responsible for NW software product development. Then, he worked as a security consultant in pre-sales, system development, and PM as a security consultant. Previously, he was the head of the Security Division at Hewlett-Packard Japan, where he oversaw the security business pre-sales and service departments. Participated in GRCS in May 2018.

Tse Man Chun
Executive Officer

Engaged in the development of cutting-edge technologies in the capital market for over 30 years, leading many projects successfully as top engineer in the development of transaction matching systems, market access and order routing systems that are required to achieve especially high performance. He was in charge of many projects at Thomson Reuters as Head of professional services, and engaged in various system developments at Cicada for DBAG(Deutsche Börse), Euronext, SGX(Singapore Exchange) and CFETS(China Foreign Exchange Trade System), etc. Subsequently, he led all transaction platforms of Chi-X Global as its Chief Technology Officer.

Head Office:

5F Palace Building, 1-1-1 Marunouchi, Chiyoda-ku, Tokyo, Japan