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Overview
Information & Communication

Ryoyu Systems Co.,Ltd.

Ryoyu Systems provides comprehensive IT services including system development, maintenance, operation, and monitoring, as well as IT infrastructure construction and information security solutions including SOC (Security Operation Center) services. The company also offers specialized engineering services such as fluid and structural analysis, CAD-based design support for aerospace, rocket, and automotive applications, alongside PLM (Product Lifecycle Management) and ERP implementation. Additionally, the company supports digital transformation through RPA automation, AI/data analytics, and cloud solutions, serving primarily large industrial manufacturers with Mitsubishi Heavy Industries as a key customer and equity-method affiliate.

Market Cap
¥35.9B
US$229M
EV
¥29.4B
US$187M
Stock¥2,817▼-1.54%
US$1 = ¥156.80 (2026-10-23)
LTM EV/EBITDA
5.1
x
LTM EV/EBIT
5.2
x
LTM PER
9.6
x
LTM PBR
1.6
x
Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-42.9%pt
1001
Oct 24, 25 – Oct 23, 26StockTOPIX
1Aug 3, 26Q1 FY2027/03 earnings announced
MC → EV Bridge
35.9BUS$229MMarket Cap0.01BUS$0.04M+ Debt3.42BUS$21.8M− Cash4.84BUS$30.9M− Inv. Sec.1.69BUS$10.8M+ NCI29.4BUS$187MEV
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Performance & Balance
Revenue 5Y (¥B)
30.3US$193M'22/333.1US$211M'23/337.1US$236M'24/342.8US$273M'25/343.2US$276M'26/3
EBITDA 5Y (¥B)
2.51US$16.0M'22/32.84US$18.1M'23/33.78US$24.1M'24/35.15US$32.8M'25/35.88US$37.5M'26/3
Net Income 5Y (¥B)
1.58US$10.1M'22/31.83US$11.7M'23/32.42US$15.4M'24/33.38US$21.6M'25/33.91US$24.9M'26/3
Capital Structure
100%
EquityD/E 0.00xDebt
Liquidity vs Debt 5Y (¥B)▲ Net Cash
CashInv. Sec.Debt
1.53US$9.74M0.04US$0.26M'22/31.84US$11.7M0.03US$0.19M'23/32.33US$14.9M0.02US$0.14M'24/34.25US$27.1M0.01US$0.09M'25/37.49US$47.8M0.01US$0.04M'26/3
Shareholders
Top 10 hold 64.9%
as of 2026-03-31 · Source: Annual Securities Report
1
Mitsubishi Heavy Industries,Ltd.
31.21%
2
Ryoyu Systems Co.,Ltd. Employee Stock Ownership Association
20.43%
3
Masato KATO
2.98%
4
Custody Bank of Japan, Ltd. (Trust Account)
2.44%
5
MUFG Bank, Ltd.
2.43%
6
STATE STREET BANK AND TRUST COMPANY 505044
1.37%
7
Hikari Tsushin, Inc. Investment Limited Partnership
1.17%
8
Fumiyo ISHIZUKA
1.10%
9
Meiji Yasuda Life Insurance Company
0.89%
10
Diamond Office Service Co., Ltd.
0.89%
Management
7 officers
Yasunari SASAKI
Representative Director, President and Executive Officer
Apr 1989 Joined Mitsubishi Heavy Industries, Ltd. Jul 2022 Deputy General Manager, Digital Innovation Headquarters, and General Manager, Communication Technology Department, Mitsubishi Heavy Industries, Ltd. Apr 2024 Joined the Company Jun 2024 Executive Expert, Deputy General Manager, Industry Solutions Business Division, the Company Jun 2025 Managing Executive Officer, General Manager, Industry Solutions Business Division, the Company Jun 2026 Representative Director, President and Executive Officer, the Company (current)
1965-07-19
Haruto KASAMA
Director, Executive Expert
Apr 1987 Joined the Company Oct 2009 General Manager, Systems Development Department, Atsugi Branch, the Company Jul 2013 General Manager, Business Solutions Business Division, Business Integration Headquarters, the Company Jun 2018 Executive Officer, Deputy General Manager, Industry Solutions Business Division, the Company Jun 2020 Executive Officer, General Manager, Industry Solutions Business Division, the Company Jun 2022 Executive Officer, General Manager, Integrated Service Center, the Company Apr 2024 Executive Officer, General Manager, ICT Creation Center, the Company Jun 2025 Director and Executive Officer, General Manager, ICT Creation Center, the Company Apr 2026 Director and Executive Officer, the Company Jun 2026 Director, Executive Expert, the Company (current)
1965-03-27
Shingo ISHIDA
Full-time Audit and Supervisory Committee Member, Director
Apr 1991 Joined The Mitsubishi Bank, Ltd. (now MUFG Bank, Ltd.) Feb 2012 Deputy General Manager, Corporate Business Development Office, Corporate Banking Department, MUFG Bank, Ltd. Jul 2014 Deputy Branch Manager, Sendai Branch, MUFG Bank, Ltd. Oct 2016 Branch Manager, Nerima Branch, MUFG Bank, Ltd. Jun 2020 Seconded to the Company, Chief Staff Member, Internal Control Office Jun 2021 Joined the Company, Chief Staff Member, Internal Control Office Jul 2021 General Manager, Internal Control Office, the Company Jun 2023 Director, Audit and Supervisory Committee Member, the Company (current)
1968-12-30
Shigeo UDA
Director
Apr 1983 Joined IBM Japan, Ltd. Apr 2005 Executive Officer (Technical Sales Support, IBM Asia Pacific), IBM Japan, Ltd. Apr 2007 Director and Executive Officer (CTO), IBM Japan, Ltd. Sep 2017 Technical Adviser, IBM Japan, Ltd. Jan 2022 Chief Technology Officer, Works Human Intelligence Co., Ltd. Jun 2025 Director, the Company (current)
1960-11-28
Mayumi MAEDA
Director
Apr 1991 Joined Mitsubishi Heavy Industries, Ltd. Jul 2011 Chief Staff Member, Information Systems Section, Management Department, Yokohama Works, Mitsubishi Heavy Industries, Ltd. Apr 2019 Deputy General Manager, ICT Planning Department, ICT Solutions Headquarters, Mitsubishi Heavy Industries, Ltd. Oct 2019 Deputy General Manager, Business Department, Technology Strategy Promotion Office, Mitsubishi Heavy Industries, Ltd. Apr 2022 Deputy General Manager, Technology Planning Department, Technology Strategy Promotion Office, Mitsubishi Heavy Industries, Ltd. Apr 2024 Chief Project Coordinator, Business Department, Research Institute, Mitsubishi Heavy Industries, Ltd. Jun 2024 Director, the Company (current) Apr 2025 Deputy General Manager and Chief Staff Member, Technology Planning Department, Technology Strategy Promotion Office, Business Department, Research Institute, Mitsubishi Heavy Industries, Ltd. Apr 2026 Deputy General Manager, Business Department, Research Institute, Mitsubishi Heavy Industries, Ltd. (current)
1968-09-16
Hiroshi KAYA
Director, Audit and Supervisory Committee Member
Apr 1984 Joined Nippon Kokan K.K. (now JFE Steel Corporation) Oct 1992 Joined Ota Showa & Co. (now EY ShinNihon LLC) Apr 1998 Registered as Certified Public Accountant May 2012 Senior Partner, Ota Showa & Co. Jun 2016 Resigned from Ota Showa & Co. Jul 2016 Representative Director, Daimaru Koki Co., Ltd. (current) Jul 2016 Representative Director, Daimaru Sangyo Co., Ltd. (current) Aug 2016 Representative, Hiroshi Kaya Certified Public Accountant Office (current) Mar 2018 Outside Audit & Supervisory Board Member, Alps Giken Co., Ltd. (current) Jun 2022 Director, Audit and Supervisory Committee Member, the Company (current)
1961-02-09
Momotaro TANIGAWA
Director, Audit and Supervisory Committee Member
Apr 2000 Joined Mitsubishi Heavy Industries, Ltd. Apr 2017 Chief Staff Member, Takasago Accounting Group, Finance and Accounting Department, Management Division, Mitsubishi Hitachi Power Systems, Ltd. (now Mitsubishi Heavy Industries, Ltd.) May 2021 Chief Staff Member, Tax Management Group, Global Finance Department, Mitsubishi Heavy Industries, Ltd. Feb 2022 Chief Staff Member, Research Group, Financial Planning Division, Mitsubishi Heavy Industries, Ltd. Jun 2023 Chief Staff Member, Tax Management Group, Global Finance Department, Mitsubishi Heavy Industries, Ltd. (current) Jun 2024 Director, Audit and Supervisory Committee Member, the Company (current)
1977-07-05
Large Shareholding Reports
No filings
Disclosures
No disclosures
Primary Source Filings
TDnet
2026-07-31
Q1 Earnings Flash
FY ending Mar 2027
View PDF →
EDINET
2026-06-23
Annual Securities Report
Period: Apr 2025 – Mar 2026
View PDF →
TDnet
2026-01-30
Q3 Earnings Flash
FY ending Mar 2026
View PDF →
EDINET
2025-11-12
Semi-Annual Securities Report
Period: Apr 2025 – Sep 2025
View PDF →
TDnet
2025-07-31
Q1 Earnings Flash
FY ending Mar 2026
View PDF →
EDINET
2025-06-24
Annual Securities Report
Period: Apr 2024 – Mar 2025
View PDF →
TDnet
2025-01-31
Q3 Earnings Flash
FY ending Mar 2025
View PDF →
EDINET
2024-11-08
Semi-Annual Securities Report
Period: Apr 2024 – Mar 2025
View PDF →
TDnet
2024-07-31
Q1 Earnings Flash
FY ending Mar 2025
View PDF →
EDINET
2024-06-26
Annual Securities Report
Period: Apr 2023 – Mar 2024
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EDINET
2024-02-09
Quarterly Securities Report
Period: Oct 2023 – Dec 2023
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EDINET
2023-11-10
Quarterly Securities Report
Period: Jul 2023 – Sep 2023
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EDINET
2023-08-10
Quarterly Securities Report
Period: Apr 2023 – Jun 2023
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EDINET
2023-06-23
Annual Securities Report
Period: Apr 2022 – Mar 2023
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EDINET
2023-02-10
Quarterly Securities Report
Period: Oct 2022 – Dec 2022
View PDF →
EDINET
2022-11-10
Quarterly Securities Report
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EDINET
2022-08-10
Quarterly Securities Report
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EDINET
2022-06-24
Annual Securities Report
View PDF →
EDINET
2022-02-10
Quarterly Securities Report
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EDINET
2021-11-11
Quarterly Securities Report
View PDF →
EDINET
2021-08-10
Quarterly Securities Report
View PDF →
EDINET
2021-06-24
Annual Securities Report
View PDF →
EDINET
2021-02-10
Quarterly Securities Report
View PDF →
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