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Overview

Information & Communication

FFRI Security,Inc.

FFRI Security is a Japan-founded cybersecurity research and development company specializing in endpoint protection, vulnerability research, malware analysis, and IoT/embedded systems security. Its flagship product, FFRI yarai, is a pattern-file-independent endpoint security solution using proprietary heuristic detection technology to defend against unknown and known malware and targeted attacks. The company also provides national security-oriented services, including security consulting, threat research, red-team assessments, and custom security R&D for government agencies and enterprise clients.

Market Cap

¥65.4B

US$417M

¥61.7B

US$393M

Stock¥8,270▼-6.97%

US$1 = ¥156.80 (2026-10-23)

LTM EV/EBITDA

46.1

LTM EV/EBIT

48.0

LTM PER

63.9

LTM PBR

17.4

Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-52.4%pt

Oct 24, 25 – Oct 23, 26StockTOPIX

1Aug 14, 26Quarterly earnings announced

2Aug 27, 26GMO Internet Group filed a new large shareholding report on FFRI Security

3Sep 28, 26GMO Internet Group filed change report (henko hokokusho) on FFRI Security holdings, dated Sep 24

4Oct 1, 26GMO Internet Group filed change report (Sep 24) after increasing stake

MC → EV Bridge

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Performance & Balance

Revenue 5Y (¥B)

EBITDA 5Y (¥B)

Net Income 5Y (¥B)

Capital Structure

100%

EquityD/E 0.00xDebt

Liquidity vs Debt 5Y (¥B)▲ Net Cash

CashInv. Sec.Debt

Shareholders

Top 10 hold 54.7%

as of 2026-03-31 · Source: Annual Securities Report

Yuji UKAI

24.55%

Ryoji KANEI

18.23%

THE BANK OF NEW YORK, TREATY JASDEC ACCOUNT (Standing Proxy: MUFG Bank, Ltd.)

2.85%

The Master Trust Bank of Japan, Ltd. (Trust Account)

2.38%

Rakuten Securities, Inc. (Joint Account)

2.11%

Shigeki TANAKA

1.77%

BNYM AS AGT/CLTS NON TREATY JASDEC (Standing Proxy: MUFG Bank, Ltd.)

0.94%

Genri Co., Ltd.

0.66%

Tetsuya NAGATA

0.62%

Tomoyoshi ISHIYAMA

0.59%

Management

8 officers

Yuji UKAI

Representative Director, President

Apr 2000 Joined Eastman Kodak Japan Ltd. Mar 2003 Joined eEye Digital Security (now BeyondTrust) Jul 2007 Established the Company; Director and Vice President, Chief Technology Officer Mar 2009 Representative Director, President (current)

1973-02-17

Ryoji KANEI

Senior Managing Director, Chief Technology Officer and General Manager, National Security Business Division

Oct 2004 Joined eEye Digital Security (now BeyondTrust) Jul 2007 Established the Company; Director, in charge of Technology Mar 2009 Director, Chief Technology Officer Jun 2018 Senior Managing Director, Chief Technology Officer (current) Oct 2023 General Manager, National Security Business Division (current)

1975-01-17

Shigeki TANAKA

Managing Director, Chief Financial Officer and General Manager, Corporate Management Division

Jun 2004 Joined Bario Secure Networks Inc. (now Bario Secure Inc.) Dec 2008 Joined the Company; General Manager, Administration Department Apr 2009 General Manager, Corporate Management Division Jun 2009 Director, Chief Financial Officer Jun 2018 Managing Director, Chief Financial Officer (current) Apr 2022 General Manager, Corporate Management Division (current)

1968-01-13

Ichiro KAWAHARA

Director, General Manager, Business Development Division; in charge of Business Development and yarai Business

Apr 1998 Joined Systempro Co., Ltd. (now SYSTENA Corporation) Jul 2007 Joined InfoScience Corporation Mar 2012 Joined the Company; Senior Manager, Technology Strategy Office Apr 2014 Executive Officer, General Manager, Business Promotion Division Jun 2018 Director, General Manager, Business Promotion Division Apr 2022 Director, General Manager, Business Development Division Oct 2023 In charge of Business Development and yarai Business (current) Jan 2026 Representative Director, President, FFRI Security Works Inc. (current)

1970-03-18

Kazumitsu UMEHASHI

Director, General Manager, Product Development Division

Apr 2001 Joined Fuji Infox Net Co., Ltd. Apr 2006 Joined Sobal Inc. Apr 2008 Joined the Company Apr 2012 Executive Officer, General Manager, Product Development Department No. 2 Jun 2018 Director, General Manager, Product Development Division Apr 2022 Director, General Manager, Technology Division Apr 2023 Director, General Manager, yarai Development Division Oct 2023 Director, General Manager, Product Development Division (current)

1980-02-19

Takao HIRAYAMA

Director, Audit and Supervisory Committee Member

Dec 1998 Section Chief, Communications Section, Maritime Staff Office, Japan Defense Agency Aug 2003 Commander, Systems Communications Group, Japan Maritime Self-Defense Force Aug 2008 Chairman of the Board, Symantec Research Labs K.K. Mar 2014 Advisor, Public Sector Sales Department, VMware K.K. Mar 2021 Advisor, Telecommunications and Public Sector Sales Division, UiPath K.K. Apr 2024 Advisor, ZeroZeroOne Inc. Jun 2020 Director, Audit and Supervisory Committee Member, the Company (current) Jul 2025 Senior Advisor, KELA K.K. (current)

1950-09-13

Tsutomu MATSUMOTO

Director, Audit and Supervisory Committee Member

Apr 1986 Lecturer, Department of Electrical and Computer Engineering, Faculty of Engineering, Yokohama National University Nov 1989 Associate Professor, Department of Electrical and Computer Engineering, Faculty of Engineering, Yokohama National University Apr 1990 Visiting Researcher, Institute for Monetary and Economic Studies, Bank of Japan Apr 2001 Professor, Graduate School of Environment and Information Sciences, Yokohama National University Jun 2016 Director, Audit and Supervisory Committee Member, the Company (current) Apr 2024 Fellow, National Institute of Advanced Industrial Science and Technology (current) Apr 2024 Senior Distinguished Professor, Yokohama National University (current)

1958-10-20

Kosaku YAMAGUCHI

Director, Audit and Supervisory Committee Member

Sep 1995 Joined Wit Co., Ltd. Oct 2000 Joined Users' Side Inc. Jun 2003 Head of Japan Office, Enterprise Estonia, Embassy of the Republic of Estonia in Japan Mar 2016 Representative Director, Cysec-Lab Inc. Jun 2018 Director, Audit and Supervisory Committee Member, the Company (current) Mar 2020 Representative Member, Sobayonin LLC (current) Nov 2020 Outside Director, xID Inc. (current)

1971-12-24

Large Shareholding Reports

GMO Internet Group, Inc.

2026-09-24

7.53%→9.17%

GMO Internet Group, Inc.

2026-09-11

6.31%→7.53%

GMO Internet Group, Inc.

2026-09-04

5.03%→6.31%

GMO Internet Group, Inc.

2026-08-26

5.03%

Yuji UKAI

2026-07-10

22.61%→21.57%

Correction filing (name/detail fix only) — ratio carried over from the original filing