beluuga.ai

Overview

Services

OYO Corporation

OYO Corporation is a geotechnical and environmental consulting firm providing solution services across three core segments: Disaster Prevention & Infrastructure (seismic/landslide risk assessment, infrastructure inspection and maintenance), Environment & Energy (environmental monitoring, soil/groundwater remediation, and renewable energy feasibility support), and International (non-destructive testing instruments, seismic monitoring systems, and geophysical survey equipment developed and sold globally). The company serves public agencies, infrastructure operators, and energy companies, leveraging proprietary measurement technologies and a broad network of specialized domestic and overseas subsidiaries. Its competitive strengths lie in the integration of field investigation expertise with in-house hardware development, spanning geotechnical instruments to seismic sensors marketed under globally recognized brands such as Kinemetrics and GSSI.

Activists: Symphony Financial Partners (Singapore) Pte. Ltd. 11.57%

Market Cap

¥61.5B

US$392M

¥29.6B

US$188M

Stock¥2,699▼-0.33%

US$1 = ¥157.05 (2026-10-22)

LTM EV/EBITDA

5.7

LTM EV/EBIT

8.5

LTM PER

18.2

LTM PBR

0.8

Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-32.4%pt

Oct 23, 25 – Oct 23, 26StockTOPIX

1Nov 11, 25Activist investor stake reduction

2Apr 23, 26Symphony Financial Partners (Singapore) Pte. Ltd. changed stake (12.61%→11.57%)

MC → EV Bridge

AI Briefing

OYO: Japan-rooted geotechnical/geophysical player spanning disaster prevention, environmental consulting, and global hardware (Kinemetrics, GSSI, Geometrics). FY25/12 revenue ¥76.3B, OP ¥4.1B (5.4% margin), moderating from FY24/12's 5.9% despite steady topline growth; net cash balance sheet (¥37.4B cash vs ¥8.3B debt) against ¥61.7B market cap. Activist-flavored register (SFP Value Realization at 8.6%) alongside a founder-linked research foundation as top holder — a cap structure ripe for governance scrutiny, not yet a deal situation per public data.

Performance & Balance

Revenue 5Y (¥B)

EBITDA 5Y (¥B)

Net Income 5Y (¥B)

Capital Structure

90%

EquityD/E 0.11xDebt

Liquidity vs Debt 5Y (¥B)▲ Net Cash

CashInv. Sec.Debt

Shareholders

Top 10 hold 47.2%

as of 2026-06-30 · Source: Annual Securities Report

Fukada Geological Institute (Public Interest Foundation)

11.10%

THE SFP VALUE REALIZATION MASTER FUND LTD. (Standing Proxy: Tachibana Securities Co., Ltd.)

8.60%

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

8.40%

Ruriko SUGA

6.50%

OYO Corporation Employee Stock Ownership Association

3.50%

JP MORGAN CHASE BANK (Standing Proxy: Mizuho Bank, Ltd.)

2.20%

Nippon Life Insurance Company

2.10%

Custody Bank of Japan, Ltd. (Trust Account)

2.00%

AK Co., Ltd. (Limited Company)

1.40%

KT Co., Ltd. (Limited Company)

1.40%

Management

9 officers

Hirofumi AMANO

Representative Director, President and Executive Officer

Apr 1990 Joined Tamano Consultants Co., Ltd. (now Nippon Engineering Consultants Urban Space Co., Ltd.) Sep 2003 Joined K.C.S. Co., Ltd. Aug 2005 Director, K.C.S. Co., Ltd. Oct 2005 Representative Director, K.C.S. Co., Ltd. Mar 2017 Director, the Company Apr 2017 Managing Executive Officer, the Company Apr 2017 General Manager, Information Technology Planning Office (now General Manager, DX Promotion Division) Mar 2019 Director, Oyo Geospace Corporation Mar 2020 Director, K.C.S. Co., Ltd. Mar 2023 Representative Director and President, the Company (current) Apr 2023 President and Executive Officer, the Company (current)

1966-01-04

Yuichi HIRASHIMA

Representative Director, Vice President and Executive Officer

Apr 1983 Joined Fuji Bank, Ltd. (now Mizuho Bank, Ltd.) Apr 2009 General Manager, Americas Credit Examination Department, Mizuho Corporate Bank, Ltd. (now Mizuho Bank, Ltd.) Apr 2011 General Manager, Business Audit Department, Mizuho Corporate Bank, Ltd. Aug 2013 Joined the Company Aug 2014 Executive Officer, the Company Apr 2015 Managing Executive Officer, the Company Apr 2015 Director, Oyo RMS Corporation Mar 2016 Director, the Company Apr 2016 General Manager, Administration Division Apr 2017 Senior Managing Executive Officer, the Company Jun 2018 Outside Director, E.R.S. Co., Ltd. Mar 2019 Director, Oyo Resource Management Corporation Mar 2020 Representative Director and Vice President, the Company (current) Apr 2020 Vice President and Executive Officer, the Company (current)

1959-11-27

Takahiro IGARASHI

Director, Vice President and Executive Officer

Apr 1985 Joined Ministry of Construction (now Ministry of Land, Infrastructure, Transport and Tourism) Apr 2008 Director, Disaster Prevention Office, River Bureau Jul 2009 Director, Coastal Office, River Bureau Sep 2012 Director, River Division, Chubu Regional Development Bureau Oct 2014 Director, River Environment Division, Water Management and Land Conservation Bureau Jul 2015 Councillor, Minister's Secretariat (Road Bureau) Jun 2016 Director, Water Resources Division, Water Management and Land Conservation Bureau Oct 2017 Joined the Company Oct 2017 Executive Officer, the Company Apr 2018 Senior Managing Executive Officer, the Company Apr 2020 Vice President and Executive Officer, the Company (current) Mar 2023 Director, the Company (current) Jun 2024 Outside Director, E.R.S. Co., Ltd. (current)

1959-06-29

Seiji OZAKI

Director

Apr 1979 Joined Sapporo Breweries Ltd. Mar 2005 Director, Sapporo Wine Co., Ltd., and General Manager, Wine and Spirits Division, Sapporo Breweries Ltd. Mar 2006 Also Representative Director and President, Ebisu Wine Mart Co., Ltd. Oct 2007 General Manager, Chugoku-Shikoku Branch, Sapporo Breweries Ltd. Mar 2010 Executive Officer and General Manager, Tokai-Hokuriku Branch, Sapporo Breweries Ltd. Mar 2012 Full-time Audit & Supervisory Board Member, Sapporo Beverage Co., Ltd.; Audit & Supervisory Board Member, Sapporo Breweries Ltd., Sapporo Group Management Co., Ltd., and Sapporo International Inc. Mar 2013 Full-time Audit & Supervisory Board Member, Pokka Sapporo Food & Beverage Ltd. Mar 2015 Full-time Audit & Supervisory Board Member, Sapporo Holdings Ltd. Mar 2019 Outside Director, the Company (current) Jun 2020 Outside Audit & Supervisory Board Member, Haruna Beverage Co., Ltd. (current) Jun 2023 Outside Audit & Supervisory Board Member, Yokogawa Bridge Holdings Corp. Jun 2024 Outside Director (Audit and Supervisory Committee Member), Yokogawa Bridge Holdings Corp. (current)

1955-08-17

Yoko IKEDA

Director

Apr 1980 Assistant Judge, Tokyo District Court May 1989 Registered as Attorney-at-Law (Yokohama Bar Association) May 1989 Joined Yamada Law Office (now Meidai Showa Law Office); Attorney-at-Law (current) Apr 1998 Legal Adviser, Kanagawa Prefecture Mar 2003 Mediation Commissioner, Yokohama District Court and Summary Court Mar 2004 Member, Yokohama City PFI Project Review Committee Apr 2006 Member, Yokohama City Bid Monitoring Committee Apr 2009 Visiting Professor, Yokohama National University Law School Apr 2012 Part-time Lecturer, Local Government College, Ministry of Internal Affairs and Communications Apr 2013 Member, Information Disclosure and Personal Information Protection Review Board, Ministry of Internal Affairs and Communications Jul 2018 Member, Public Records Management Committee, Cabinet Office Oct 2019 Member, Tokyo Metropolitan Public Records Management Committee (current) Mar 2022 Outside Director, the Company (current) Jun 2023 Director, Railway Welfare Foundation (current)

1955-01-22

Emi SEKIYA

Director

Apr 1985 Director, OA Mate Co., Ltd. Jan 1997 Director, Aises Co., Ltd. Jan 1999 Managing Director, Aises Co., Ltd. Jan 2001 Senior Managing Director, Aises Co., Ltd. Sep 2003 Representative Director and President, Ilnet Co., Ltd. Apr 2005 Director, PCI Holdings Co., Ltd. Oct 2016 Representative Director and Chairman, Ilnet Co., Ltd. Oct 2017 Representative Director and Chairman, Nippon Green Power Development Co., Ltd. (current) Jun 2022 Outside Director, Kentetsu Construction Co., Ltd. (current) Mar 2025 Outside Director, the Company (current)

1960-08-17

Shinichi KAGAWA

Director, Full-time Audit and Supervisory Committee Member

Apr 1980 Joined the Company Apr 1998 Deputy General Manager, Finance Department, Administration Division Sep 2002 Transferred to NS Environment Co., Ltd.; General Manager, Administration Division Dec 2004 Full-time Audit & Supervisory Board Member, NS Environment Co., Ltd. Feb 2007 Joined the Company; General Manager, General Affairs Department, Administration Division, and Center Manager, Administration Center Nov 2010 Pacific Director, OYO Corporation, U.S.A. Apr 2011 General Manager, Accounting Department, and General Manager, General Affairs Department, Administration Division Mar 2015 Director and Vice President, K.C.S. Co., Ltd. Apr 2016 Executive Officer, the Company Apr 2016 General Manager, Compliance Office Mar 2018 Full-time Audit & Supervisory Board Member, the Company Mar 2025 Full-time Director (Audit and Supervisory Committee Member), the Company (current)

1957-06-17

Jun NAITO

Director, Audit and Supervisory Committee Member

Apr 1982 Registered as Attorney-at-Law Apr 1982 Joined Nagashima Ohno Law Office Jan 1991 Partner, Nagashima Ohno Law Office Jan 2000 Partner, Nagashima Ohno & Tsunematsu Jun 2007 Outside Audit & Supervisory Board Member, Inotec Co., Ltd. Jan 2013 Counsel, Nagashima Ohno & Tsunematsu Mar 2015 Outside Audit & Supervisory Board Member, the Company Mar 2016 Outside Audit & Supervisory Board Member, Yamatane Corporation Jan 2020 Senior Counsel, Nagashima Ohno & Tsunematsu Jun 2023 Outside Director (Audit and Supervisory Committee Member), Yamatane Corporation (current) Jan 2025 Representative Attorney, J&N Law Office (current) Mar 2025 Outside Director (Audit and Supervisory Committee Member), the Company (current)

1956-01-30

Takao ORIHARA

Director, Audit and Supervisory Committee Member

Apr 1980 Joined Nomura Real Estate Co., Ltd. Jun 2005 Director, Nomura Real Estate Holdings, Inc. Jun 2005 Director, Nomura Real Estate Co., Ltd. Apr 2008 Director and Senior Executive Officer, Nomura Real Estate Co., Ltd. Apr 2009 Director and Managing Executive Officer, Nomura Real Estate Co., Ltd. May 2012 Director and Executive Officer, Nomura Real Estate Holdings, Inc. Apr 2014 Audit & Supervisory Board Member, Nomura Real Estate Co., Ltd. Apr 2014 Adviser, Nomura Real Estate Holdings, Inc. Jun 2014 Audit & Supervisory Board Member, Nomura Real Estate Holdings, Inc. Jun 2015 Director (Audit and Supervisory Committee Member), Nomura Real Estate Holdings, Inc. Mar 2023 Outside Audit & Supervisory Board Member, the Company Jun 2023 Outside Audit & Supervisory Board Member, Nippon Gas Co., Ltd. (current) Mar 2025 Outside Director (Audit and Supervisory Committee Member), the Company (current)

1958-02-06

Large Shareholding Reports