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Overview
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TOKYO KOATSU Co.,Ltd.

Tokyo Koatsu Co., Ltd. is engaged in the manufacture and sale of industrial gases—including specialty and medical gases—serving a broad range of end markets such as steel, automotive, food, semiconductor, and healthcare. The company also distributes welding materials and equipment, including automated welding systems, and operates a Fine Products segment covering industrial chemicals, urethane insulation panels, and semiconductor-related consumables and equipment. Gas purification and recovery systems, as well as CO2 neutralization apparatus, round out its product portfolio.

Market Cap
¥—B
EV
¥—B
Stock¥4,700▲+0.00%
US$1 = ¥156.80 (2026-10-23)
LTM EV/EBITDA
—
LTM EV/EBIT
—
LTM PER
—
LTM PBR
—
Price 1Y
Apr 19, 22 – Mar 28, 25
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Performance & Balance
Revenue 5Y (¥B)
12.0US$76.4M'24/512.3US$78.2M'25/513.4US$85.8M'26/5
Net Income 5Y (¥B)
0.26US$1.68M'24/50.21US$1.34M'25/50.31US$1.96M'26/5
Shareholders
Top 10 hold 83.2%
as of 2026-05-31 · Source: Annual Securities Report
1
Nippon Sanso Corporation
19.25%
2
Hiromasa MAEDA
17.79%
3
Resonac Gas Products Co., Ltd.
15.27%
4
Nisshinbo Holdings Inc.
6.59%
5
Tokyo Gas Chemicals Co., Ltd.
4.96%
6
TOKYO KOATSU Co.,Ltd. Employee Stock Ownership Association
4.31%
7
TCC Co., Ltd.
4.59%
8
Ozawa Bussan Co., Ltd.
4.27%
9
The Hokuriku Bank, Ltd.
3.44%
10
IWATANI CORPORATION
2.69%
Management
14 officers
Takaaki NIKAIDO
Representative Director, President
Apr. 1981: Joined Showa Denko K.K. (now Resonac Corporation). Jan. 2006: General Manager, Chemicals SCM Center, Chemicals Division. Apr. 2012: General Manager, Ammonia & Derivatives Dept., Basic Chemicals Business Div. Jan. 2013: Seconded to Showa Denko Gas Products K.K. (now Resonac Gas Products Corporation); General Manager, Industrial Gas Business Div. Apr. 2014: General Manager, Chubu Branch. Jan. 2019: General Manager, South Kanto Branch. Mar. 2020: Director & Executive Officer, Head of Business Division, concurrently South Kanto Branch Manager. Jul. 2020: Director & Executive Officer, Head of Business Division. Jan. 2022: Advisor, the Company. Feb. 2022: Senior Managing Director, Head of Corporate Planning Division. Jun. 2022: Director, Kita-Kanto Sogo Gas Center K.K. Aug. 2022: Senior Managing Director, Head of Corporate Planning Division, IR. Aug. 2023: Representative Director, President & CEO, the Company (current).
1958-08-18
Hiromasa MAEDA
Director, Chairman
Apr. 1958: Joined Tokyo Seiko K.K. Feb. 1968: Joined Tokai Sangyo K.K. (now Higashi-Nihon Iwatani Gas K.K.). Jul. 1972: Joined the Company; Senior Managing Director. Jan. 1974: Representative Director & President, Ogawa Sangyo K.K. Apr. 1984: Representative Director & President, Asahi Kagaku Koji K.K. (now Tokyo Koatsu Yamazaki K.K.). Jun. 1999: Deputy President & Director, the Company. Jun. 2003: Representative Director & President, the Company. Apr. 2004: Director, Tokyo Rare Gas K.K. Jun. 2004: Representative Director & President, Shizuoka Gas Center K.K.; Statutory Auditor, Kita-Kanto Sogo Gas Center K.K. Mar. 2009: Representative Director & President, Sanshin Shoko K.K. (now Ushio Shoko K.K.). Jul. 2010: Director, Higashi-Nihon Koatsu K.K. (current). Sep. 2012: Representative Director & President, Ushio Shoko K.K. Sep. 2014: Chairman of the Board, Ushio Shoko K.K. (current). Mar. 2015: Chairman of the Board, Ogawa Sangyo K.K. (current). Apr. 2015: Representative Director & President, Tokyo Mybis K.K. May 2018: Director, Meiko Corporation. Oct. 2018: Chairman of the Board, Meiko Corporation. Aug. 2023: Representative Director & Chairman, the Company. Jul. 2024: Director, Meiko Corporation (current). Jun. 2025: Statutory Auditor, Kita-Kanto Sogo Gas Center K.K. (current). Jun. 2026: Statutory Auditor, Kawaguchi Sogo Gas Center K.K. (current). Aug. 2026: Chairman of the Board, the Company (current).
1936-01-19
Shinichi MURAYAMA
Director, Managing Director
Apr. 1990: Joined Yamazaki Shoten K.K. (now Tokyo Koatsu Yamazaki K.K.). Apr. 2007: Transferred to the Company. Mar. 2008: Joined Denyo Kosan K.K. Apr. 2009: Transferred to Denyo Co., Ltd. Jun. 2009: Joined the Company. Apr. 2018: Executive Officer, General Manager of Kansai Sales Dept., the Company. Jul. 2020: Senior Executive Officer, Head of Welding Equipment Division. Jun. 2023: Senior Executive Officer, Head of Welding Equipment Division. Aug. 2023: Director, Head of Welding Equipment Division. Sep. 2023: Director, Head of Gas & Welding Materials Division. Mar. 2024: Director, Kita-Kanto Sogo Gas Center K.K. (current). Jun. 2024: Representative Director, Kawaguchi Sogo Gas Center K.K. (current); Statutory Auditor, Shizuoka Gas Center K.K. (current). Aug. 2024: Managing Director, Head of Gas & Welding Materials Division, the Company (current).
1972-02-02
Hiroki HOSOOKA
Director, Managing Director
Apr. 1997: Joined Kurozen K.K. Nov. 2001: Joined Yappa Inc. (now ZOZO NEXT Corporation). Jun. 2004: Head of Internal Audit, Intertech K.K. Mar. 2005: Head of Corporate Planning, Intertech K.K. Apr. 2009: Head of Corporate Planning, the Company. Jul. 2020: Senior Executive Officer, Head of Corporate Planning. Feb. 2022: Senior Executive Officer, General Manager of Corporate Planning Dept. Aug. 2023: Director, General Manager of Corporate Planning Dept., IR. Aug. 2024: Managing Director, General Manager of Corporate Planning Dept., IR, the Company (current).
1973-03-28
Mikio YAMAGUCHI
Director, Senior Advisor
Apr. 1975: Joined Taiyō Sanso K.K. (now Nippon Sanso K.K.). Jun. 2009: Executive Officer, Taiyo Nippon Sanso Corporation (now Nippon Sanso Corporation). Jun. 2013: Managing Executive Officer, Deputy Head of Industrial Gas Business Division. Jun. 2017: Deputy President & Director, Taiyo Nippon Sanso Gas & Welding K.K. (now Nippon Sanso G&W K.K.). Jun. 2020: Special Advisor, same company. Jan. 2022: Advisor, the Company. Feb. 2022: Managing Director, Head of Sales Division. Jun. 2022: Representative Director, Kawaguchi Sogo Gas Center K.K.; Statutory Auditor, Shizuoka Gas Center K.K. Jun. 2023: Managing Director, Head of Industrial Gas Division. Aug. 2023: Director & Senior Advisor, the Company (current).
1954-10-11
Akio SADANAGA
Director (Non-Executive)
Apr. 1959: Joined Eigetsu Shoten K.K. (now Eigetsu K.K.). Jul. 1961: Joined Itochu Nenryo K.K. (now Itochu Enex Co., Ltd.). Apr. 1973: General Manager, Tokyo Branch. Jul. 1989: General Manager, President's Office. Jun. 1993: Director, Okayama Branch Manager. Apr. 1996: Director, General Manager of HR & General Affairs Dept. Jun. 1997: Managing Director, Acting Head of Corporate Planning & Administration Division, concurrently HR & General Affairs Dept. Jun. 1999: Representative Director & Managing Director, Head of Administration Division. Jun. 2000: Representative Director & Senior Managing Director, Head of East Japan Regional HQ. Jun. 2002: Representative Director & Senior Managing Director, Head of Finance & Administration Division, Sinanen Co., Ltd. Jun. 2006: Statutory Auditor, the Company. Sep. 2008: Director, Sanshin Shoko K.K. (now Ushio Shoko K.K.). Sep. 2009: Senior Advisor, the Company. Jun. 2011: Director & Senior Advisor, the Company. Sep. 2011: Director, Ushio Shoko K.K. (current). Oct. 2017: Director, Head of Administration Division, IR, the Company. May 2018: Director & Senior Advisor, Meiko Corporation. Aug. 2019: Statutory Auditor, Kita-Kanto Sogo Gas Center K.K. May 2020: Chairman of the Board, Meiko Corporation. Jun. 2020: Deputy President & Director, IR, the Company. Aug. 2022: Director & Senior Advisor, the Company. Aug. 2023: Director, the Company (current). Jul. 2024: Director & Senior Advisor, Meiko Corporation (current).
1940-11-02
Masahiro SUZUKI
Director (Non-Executive)
Apr. 1978: Joined Daikoro K.K. Feb. 1982: Joined Ogawa Sangyo K.K. Aug. 1991: Transferred to the Company. Apr. 1995: Seconded to Ogawa Sangyo K.K.; Director, General Manager of Operations. Apr. 2001: Managing Director, Ogawa Sangyo K.K. Jan. 2015: Transferred to Ogawa Sangyo K.K. Feb. 2015: Representative Director & President, Ogawa Sangyo K.K. (current). Aug. 2023: Director, the Company (current).
1960-06-13
Misako NUKADA
Director (Non-Executive)
May 1989: Registered as Attorney-at-Law. Apr. 1995: Part-time Lecturer, Faculty of Law, Chuo University. Jul. 1999: Joined Nukada & Iguchi Law Office (current). Apr. 2000: Chairperson, Committee on Rights of Children, Daini Tokyo Bar Association. Apr. 2001: Instructor in Criminal Defense, Judicial Training Institute, Supreme Court of Japan. Jun. 2008: Vice-Chairperson, Committee on Legal Education for Citizens, Japan Federation of Bar Associations. Sep. 2010: Director, Law and Education Society of Japan. Nov. 2015: Member, Discipline Committee, Daini Tokyo Bar Association. Jun. 2019: Director, the Company (current). Feb. 2022: Member, Disciplinary Committee, Daini Tokyo Bar Association (current). Sep. 2022: Deputy President, Law and Education Society of Japan (current).
1956-09-24
Takashi MASUDA
Director (Non-Executive)
Apr. 1964: Joined Toa Yakuhin Kogyo K.K.; Director. Apr. 1966: Seconded to Torii Pharmaceutical Co., Ltd. Apr. 1967: Director, President's Office, Toa Yakuhin Kogyo K.K. Apr. 1970: Senior Managing Director, same company. Feb. 1988: Representative Director & President, same company. Feb. 2019: Chairman of the Board, same company (current). Jun. 2020: Director, the Company (current).
1941-05-09
Ryuta YAMAGUCHI
Director (Non-Executive)
Apr. 1992: Joined Showa Denko K.K. (now Resonac Corporation). Mar. 2008: Leader, Gas & Chemicals Dept. (West Japan), Chemicals Business Division. Jun. 2010: Leader, Gas & Chemicals Dept. (Inorganic Industrial Chemicals Group), Chemicals Business Division. Jan. 2012: Leader, Soda & Derivatives Dept. (Inorganic Industrial Chemicals Group), Chemicals Business Division. Jan. 2017: Leader, Chemicals Dept. (Ammonia Group), Basic Chemicals Business Division. Jan. 2020: General Manager, Chemicals Dept., Basic Chemicals Business Division. Jan. 2023: General Manager, Chemicals Dept., Basic Chemicals Business Division, Resonac Corporation. Jan. 2024: Representative Director, President & Head of Business Division, Resonac Gas Products Corporation. Aug. 2024: Director, the Company (current). Jan. 2025: Representative Director & President, Resonac Gas Products Corporation (current).
1967-02-03
Ryoji TSUTSUI
Director (Non-Executive)
Sep. 2004: Joined Keiseikai Tax Corporation. Sep. 2005: Joined Okubo Takamasa Tax Accountant Office. Sep. 2007: Joined Yamada & Partners Tax Corporation. Apr. 2011: Joined Keiseikai Tax Corporation. Feb. 2016: Registered as Certified Tax Accountant. Mar. 2016: Staff Member, Keiseikai Tax Corporation. May 2018: Statutory Auditor, Okada Kogyo K.K. (current). Jun. 2018: Representative Member, Keiseikai Tax Corporation (current). Aug. 2025: Director, the Company (current).
1980-10-17
Hiroyuki MIURA
Director (Non-Executive), Chairman of the Audit & Supervisory Committee
Apr. 1965: Joined Mitsubishi Kasei Kogyo K.K. (now Mitsubishi Chemical Corporation). Jun. 1996: Executive Officer, General Manager of Finance Dept. Jun. 1997: Director, General Manager of Accounting Dept., Finance & Accounting Division, Taiyo Toyo Sanso K.K. (now Nippon Sanso Corporation). Jun. 1998: Managing Director, same company. Jun. 2002: Senior Managing Director, same company. Oct. 2004: Senior Managing Director, Taiyo Nippon Sanso Corporation (now Nippon Sanso Corporation). Jun. 2008: Special Advisor, same company; Statutory Auditor, TM Air K.K. Jun. 2013: Statutory Auditor, the Company. Jun. 2019: Director (Chairman of the Audit & Supervisory Committee), the Company (current).
1942-08-29
Yuji TANAKA
Director (Audit & Supervisory Committee Member)
Apr. 1969: Joined Showa Denko K.K. (now Resonac Corporation). Aug. 1980: Deputy Chief Researcher, Engineering Research Center, Central Research Laboratory. Apr. 1983: Chief Researcher, Engineering Research Center, Production Technology Division. Oct. 1991: Deputy Senior Specialist, Development Dept., Chemicals Business Division, Head Office. Apr. 1994: Senior Specialist, Development Dept., Chemicals Business Division, Head Office. Apr. 1996: Senior Specialist, Development Dept., Gas & Chemicals Business Division. Jun. 2000: General Manager, Technical Dept., the Company. Jun. 2005: Director, Head of Technology & Manufacturing Division. Jun. 2007: Director, Head of Technology & Manufacturing Division, concurrently Head of R&D Division. Apr. 2013: Director, Head of Technology, Manufacturing & Administration Division. Jan. 2014: Director, Head of Technology, Manufacturing & Administration Division, concurrently Deputy Head of R&D Division. Apr. 2015: Director, Head of Technology, Manufacturing & Safety Division. Sep. 2017: Director, Meiko Corporation. Jun. 2019: Senior Executive Officer, Head of Technology, Manufacturing & Safety Division, the Company. Aug. 2023: Director (Audit & Supervisory Committee Member), the Company (current).
1943-09-23
Tsukasa NAKAMURA
Director (Non-Executive), Audit & Supervisory Committee Member
Apr. 1982: Joined Itochu Nenryo K.K. (now Itochu Enex Co., Ltd.). Apr. 2004: General Manager, Corporate Planning Dept. Apr. 2009: Executive Officer, General Manager of Industrial Energy Sales Dept. Apr. 2011: Executive Officer, General Manager of Operations, Industrial Materials Business Division, concurrently Energy Management Dept. Apr. 2012: Executive Officer, Deputy Head of Industrial Materials Business Division, concurrently Energy Management Dept. May 2012: Representative Director & President, Tokyo Toshi Service K.K. Apr. 2014: Executive Officer, Deputy Head of Energy Trade Business Division, Itochu Enex Co., Ltd. Jun. 2014: Director & Executive Officer, Deputy Head of Energy Trade Business Division. Apr. 2015: Director & Executive Officer, Deputy Head of Administration Group. Apr. 2016: Executive Officer, Head of Administration Division. Apr. 2017: Representative Director & President, Itochu Enex Home Life West Japan K.K. Apr. 2020: Managing Executive Officer, Head of Home Life Division, Itochu Enex Co., Ltd. Dec. 2021: Managing Executive Officer, Supervisor of Home Life Division. Apr. 2022: Advisor, same company. May 2022: Director, Nature Intelligence Inc. (current). Aug. 2023: Director (Audit & Supervisory Committee Member), the Company (current).
1957-11-04
Large Shareholding Reports
No filings
Disclosures
Executive Change
2026-08-31
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Primary Source Filings
TDnet
2026-08-31
Executive Change
View PDF →
TDnet
2026-08-31
発行者情報
FY ending May 2026
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