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Overview
Iron and Steel

OSAKA STEEL CO.,LTD.

Osaka Steel is a core electric arc furnace steelmaker within the Nippon Steel Group, specializing in the manufacturing and sale of structural steel sections (shaped steel), bar steel, flat steel, steel billets, and processed steel products. The company supplies a broad range of steel products to construction, civil engineering, shipbuilding, and industrial machinery sectors, positioning itself as a top supplier in the bar and section steel segment in Japan. Its business model is centered on steel recycling through electric furnace technology, contributing to a recycling-oriented society.

Market Cap
¥72.7B
US$464M
EV
¥84.7B
US$540M
Stock¥2,431▲+0.25%
US$1 = ¥156.80 (2026-10-23)
LTM EV/EBITDA
18.8
x
LTM EV/EBIT
2429.4
x
LTM PER
NM
LTM PBR
0.7
x
Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-30.8%pt
100123
Oct 23, 25 – Oct 23, 26StockTOPIX
1Feb 6, 26Strategic Capital, Inc. changed stake (12.29%→12.37%)
2Feb 26, 26Effissimo Capital Management Pte. Ltd. changed stake (6.39%→6.19%)
3Jul 31, 26Q1 FY2027/03 earnings announced
MC → EV Bridge
72.7BUS$464MMarket Cap11.5BUS$73.1M+ Debt0.98BUS$6.26M− Cash0.62BUS$3.95M− Inv. Sec.2.15BUS$13.7M+ NCI84.7BUS$540MEV
AI Briefing
Osaka Steel, Nippon Steel's 55.58%-owned EAF subsidiary, anchors Japan's bar and structural steel supply to construction and infra end-markets. FY26/3 revenue slipped to ¥95.1B with operating margin turning negative (-0.3%), a sharp reversal from FY25/3's ¥116B / 4.6%. Trading at ¥70.9B market cap versus ¥111B equity book, with forward EBITDA of ¥5.5B signaling an expected but unconfirmed margin recovery.
Performance & Balance
Revenue 5Y (¥B)
104US$666M'22/3117US$747M'23/3117US$748M'24/3116US$743M'25/395.1US$606M'26/3
EBITDA 5Y (¥B)
7.99US$50.9M'22/310.2US$65.0M'23/311.5US$73.1M'24/310.1US$64.5M'25/34.41US$28.1M'26/3
Net Income 5Y (¥B)
2.57US$16.4M'22/32.90US$18.5M'23/33.12US$19.9M'24/33.23US$20.6M'25/3-20.9-US$134M'26/3
Capital Structure
91%
EquityD/E 0.10xDebt
Liquidity vs Debt 5Y (¥B)▼ Net Debt
CashInv. Sec.Debt
5.56US$35.5M26.2US$167M'22/35.44US$34.7M29.7US$189M'23/36.39US$40.8M16.7US$106M'24/310.5US$67.0M18.3US$117M'25/33.64US$23.2M16.6US$106M'26/3
Shareholders
Top 10 hold 84.9%
as of 2026-03-31 · Source: Annual Securities Report
1
NIPPON STEEL CORPORATION
55.58%
2
INTERTRUST TRUSTEES(CAYMAN) LIMITED SOLELY IN ITS CAPACITY AS TRUSTEE OF JAPAN-UP (Standing Proxy: Mizuho Bank, Ltd.)
17.48%
3
Japan Securities Finance Co.,Ltd.
2.79%
4
Tachibana Securities Co., Ltd.
2.54%
5
The Master Trust Bank of Japan, Ltd.
2.25%
6
JPMSPLC CLIENT ASSETS SK JPY (Standing Proxy: Citibank, N.A., Tokyo Branch)
1.45%
7
CGML PB CLIENT ACCOUNT/ COLLATERAL (Standing Proxy: Citibank, N.A., Tokyo Branch)
0.84%
8
UBS AG LONDON A/C IPB SEGREGATED CLIENT ACCOUNT (Standing Proxy: Citibank, N.A., Tokyo Branch)
0.71%
9
GOLDMAN SACHS BANK EUROPE SE (Standing Proxy: Goldman Sachs Japan Co., Ltd.)
0.67%
10
OSAKA STEEL CO.,LTD. Employee Stock Ownership Association
0.61%
Management
11 officers
Junichi TANI
Representative Director, President
Apr 1987 Joined Sumitomo Metal Industries, Ltd. (now Nippon Steel Corporation) Apr 2008 General Manager, Steelmaking Department, Kashima Works, Steel Sheet & Construction Materials Company, Sumitomo Metal Industries Oct 2010 Director, General Manager, Steelmaking Department, Sumikin Steel Co., Ltd. Oct 2012 General Manager, Production Technology Department, Wakayama Works, Nippon Steel & Sumitomo Metal Corporation (now Nippon Steel Corporation) Apr 2014 General Manager, Steelmaking Department, Yawata Works, Nippon Steel & Sumitomo Metal Corporation Apr 2016 Deputy Works Manager, Yawata Works, Nippon Steel & Sumitomo Metal Corporation Apr 2017 Executive Officer, General Manager, Safety Promotion Department, Nippon Steel & Sumitomo Metal Corporation Apr 2018 Executive Officer, Works Manager, Yawata Works, Nippon Steel & Sumitomo Metal Corporation Apr 2020 Managing Executive Officer, Works Manager, Kyushu Works, Nippon Steel Corporation Apr 2021 Managing Executive Officer, Works Manager, Higashi-Nihon Works, Nippon Steel Corporation Apr 2024 Executive Officer, Nippon Steel Corporation; Advisor, Osaka Steel Co., Ltd. Jun 2024 Representative Director, President, Osaka Steel Co., Ltd. (current)
1962-11-26
Takashi SEKINO
Managing Director; responsible for General Affairs, Finance, Sales and Logistics
Apr 1989 Joined Nippon Steel Corporation Apr 2009 Manager, Shipbuilding Steel Section, Heavy Plate Sales Department, Heavy Plate Business Division, Nippon Steel Corporation Apr 2013 General Manager, Process Management Department, Oita Works, Nippon Steel & Sumitomo Metal Corporation Apr 2016 Office Manager, Chicago Office, Nippon Steel & Sumitomo Metal USA, Inc. Apr 2020 Advisor, Global Business Support Center, Global Business Promotion Department, Nippon Steel Corporation Apr 2023 Advisor, Nippon Steel Corporation; President, Nippon Steel Southeast Asia Co., Ltd. Apr 2024 Managing Executive Officer, Osaka Steel Co., Ltd. Jun 2024 Managing Director; responsible for Corporate Planning, General Affairs, Finance and Affiliated Company Management; Sales and Logistics; Procurement and Outsourcing Management Jun 2025 Managing Director; responsible for General Affairs, Finance, Sales and Logistics; Procurement and Outsourcing Management Jun 2026 Managing Director; responsible for General Affairs, Finance, Sales and Logistics
1965-10-15
Tomonori MIZUTANI
Managing Director; responsible for Production Technology, IT Systems, Equipment Technology and Product Planning
Apr 1990 Joined Nippon Steel Corporation Apr 2010 Large Mill Manager, Section Steel Department, Sakai Works, Nippon Steel Corporation Apr 2012 General Manager, Section Steel Department, Sakai Works, Nippon Steel Corporation Apr 2013 General Manager, Section Steel Department, Kashima Works, Nippon Steel Corporation Apr 2018 Deputy Works Manager, Kashima Works, Nippon Steel Corporation Apr 2019 Advisor, Nippon Steel Corporation; General Manager, Section Steel & Spiral Steel Pipe Technology Department, Construction Materials Business Division Apr 2025 Managing Executive Officer, Osaka Steel Co., Ltd. Jun 2025 Managing Director; responsible for Safety, Environment and Disaster Prevention, Production Technology, IT Systems, Equipment Technology and Product Planning (current) Jun 2026 Managing Director; responsible for Production Technology, IT Systems, Equipment Technology and Product Planning
1965-07-30
Kazuhiro HORII
Director; responsible for Safety, Environment and Disaster Prevention, and Procurement and Outsourcing Management; concurrently General Manager, Production Technology Department
Apr 1988 Joined Nippon Steel Corporation Jul 2016 Senior Chief Officer, Slag & Cement Business Promotion Department, Nippon Steel & Sumitomo Metal Corporation Jul 2018 General Manager, Production Technology Department, Osaka Steel Co., Ltd. Jun 2019 Advisor; Plant Manager, Kumamoto Plant (West Japan), Osaka Steel Co., Ltd. Jun 2022 Executive Officer; General Manager, Production Technology Department, concurrently General Manager, Procurement and Outsourcing Management Department; responsible for Safety, Environment and Disaster Prevention, and Standardization Promotion Jun 2024 Executive Officer; General Manager, Production Technology Department, concurrently General Manager, Procurement and Outsourcing Management Department; responsible for Safety, Environment and Disaster Prevention Promotion, Standardization and Equipment Technology Jun 2025 Executive Officer; General Manager, Production Technology Department, concurrently General Manager, Procurement and Outsourcing Management Department; responsible for Safety, Environment and Disaster Prevention Promotion and Equipment Technology Oct 2025 Executive Officer; General Manager, Production Technology Department; responsible for Safety, Environment and Disaster Prevention Promotion and Equipment Technology; assists Managing Director Sekino on Procurement and Outsourcing Management Jun 2026 Director; responsible for Safety, Environment and Disaster Prevention, and Procurement and Outsourcing Management; concurrently General Manager, Production Technology Department
1963-08-04
Shinya MATSUZAWA
Outside Director
Apr 1979 Joined Shionogi & Co., Ltd. Apr 2005 General Manager, Legal Department, Shionogi & Co., Ltd. Apr 2013 Executive Officer, General Manager, Legal Department, Shionogi & Co., Ltd. Apr 2016 General Manager, Legal Department, Shionogi & Co., Ltd. Apr 2019 Advisor, Legal Department, Shionogi & Co., Ltd. Jun 2019 Outside Director, Osaka Steel Co., Ltd. (current) Mar 2026 Retired as Advisor, Legal & Compliance Department, Shionogi & Co., Ltd.
1956-02-27
Mitsuhiro SATO
Outside Director
Apr 1978 Joined Takenaka Corporation Apr 2002 General Manager, Technical Department, Osaka Head Office, Takenaka Corporation Mar 2006 General Manager, Quality Control Department, Osaka Head Office, Takenaka Corporation Mar 2008 Manager, Management Office, Takenaka Corporation Mar 2012 General Manager, Internal Audit Department, Takenaka Corporation Mar 2014 Audit & Supervisory Board Member, Takenaka Corporation Mar 2021 Retired Jun 2021 Outside Director, Osaka Steel Co., Ltd. (current)
1956-03-16
Keiko KANEKO
Outside Director
Apr 1981 Joined Matsushita Electric Industrial Co., Ltd. (now Panasonic Holdings Corporation) Apr 2007 General Manager, Information Security Division, Matsushita Electric Industrial Co., Ltd. Oct 2014 Left Matsushita Electric Industrial Co., Ltd. Oct 2014 Joined Benesse Holdings, Inc. Jun 2016 General Manager, Security Division; Chief Security Officer (CSO) and Chief Privacy Officer (CPO), Benesse Holdings, Inc. Mar 2018 Left Benesse Holdings, Inc. Jun 2019 Outside Director, MaruDai Food Co., Ltd. Jun 2022 Outside Director, Kyokuto Kaihatsu Kogyo Co., Ltd. (current) Jun 2024 Outside Director, Ikedasenshu Holdings Co., Ltd. (current) Jun 2024 Director (non-executive), Ikedasenshu Bank, Ltd. (current) Jun 2026 Outside Director, Osaka Steel Co., Ltd.
1958-11-27
Yoshihiro OKIGAKI
Full-time Audit & Supervisory Board Member
Apr 1985 Joined Nippon Steel Corporation Oct 2012 Office Manager, Thin Plate Section, Nagoya Branch, Nippon Steel Corporation Apr 2014 Senior Chief Officer, Human Resources & Labor Relations Department, Nippon Steel & Sumitomo Metal Corporation; Advisor, Nichia Steel Works, Ltd. Jun 2014 Director, General Manager, Administration Division, Nichia Steel Works, Ltd. Dec 2017 Left Nippon Steel & Sumitomo Metal Corporation Jul 2018 Director, General Manager, Administration Division, and General Manager, Overseas Business Division, Nichia Steel Works, Ltd. Jun 2021 Managing Director, General Manager, Administration Division and Overseas Business Division, Nichia Steel Works, Ltd. Sep 2021 Managing Director; responsible for Administration Division and Affiliated Companies Division, General Manager, Administration Division, Nichia Steel Works, Ltd. Jun 2025 Full-time Audit & Supervisory Board Member, Osaka Steel Co., Ltd. (current)
1962-12-26
Shigetsugu SUGIMOTO
Outside Audit & Supervisory Board Member
Apr 1974 Joined Tohmatsu & Aoki Audit Corporation (now Deloitte Touche Tohmatsu LLC) Apr 1978 Registered as Certified Public Accountant Jul 1989 Became Partner, Tohmatsu & Aoki Audit Corporation Jan 2016 Opened Shigetsugu Sugimoto CPA Office (current) May 2016 Outside Audit & Supervisory Board Member, AEON Fantasy Co., Ltd. (current) Jun 2016 Outside Audit & Supervisory Board Member, AEON Bank, Ltd. (current) Jun 2016 Outside Audit & Supervisory Board Member, Nippon Steel Trading Corporation (scheduled to retire Jun 2026) Jun 2020 Outside Audit & Supervisory Board Member, Osaka Steel Co., Ltd. (current)
1951-07-01
Naoko NAGAI
Outside Audit & Supervisory Board Member
Apr 1987 Judge Assistant, Tokyo District Court Apr 1997 Judge, Osaka Family Court Apr 2014 Presiding Judge, Nagoya Family Court Nov 2022 Chief Judge, Okayama Family Court Mar 2024 Chief Judge, Fukuoka Family Court Feb 2025 Retired from the judiciary Jun 2026 Outside Audit & Supervisory Board Member, Osaka Steel Co., Ltd.
1960-02-20
Takanori GOTO
Audit & Supervisory Board Member
Apr 1992 Joined Nippon Steel Corporation Apr 2019 General Manager, Corporate Planning Department, Nippon Steel Corporation Apr 2021 General Manager, Affiliated Companies Department, Nippon Steel Corporation Apr 2022 General Manager, Affiliated Companies Department, Nippon Steel Corporation Jun 2022 Audit & Supervisory Board Member, Osaka Steel Co., Ltd. (current) Apr 2024 Advisor; General Manager, Affiliated Companies Department, Nippon Steel Corporation (current)
1969-09-28
Large Shareholding Reports
Strategic Capital Co., Ltd.
2026-10-08
11.60%→12.29%
Correction filing (name/detail fix only) — ratio carried over from the original filing
Strategic Capital Co., Ltd.
2026-10-08
12.29%→12.29%
Correction filing (name/detail fix only) — ratio carried over from the original filing
Strategic Capital Co., Ltd.
2026-10-07
9.49%→10.59%
Correction filing (name/detail fix only) — ratio carried over from the original filing
Effissimo Capital Management Pte. Ltd.
2026-02-26
6.39%→6.19%
Strategic Capital Co., Ltd.
2026-02-06
12.29%→12.37%
Strategic Capital Co., Ltd.
2025-07-09
12.29%→12.29%
Strategic Capital Co., Ltd.
2025-07-09
12.29%→12.29%
Strategic Capital Co., Ltd.
2025-05-09
11.60%→12.29%
Strategic Capital Co., Ltd.
2025-05-09
12.29%→12.29%
Strategic Capital Co., Ltd.
2025-03-05
10.59%→11.60%
Strategic Capital Co., Ltd.
2025-02-10
9.49%→10.59%
Strategic Capital, Inc.
2024-10-17
8.48%→9.49%
Strategic Capital, Inc.
2024-08-28
7.43%→8.48%
Strategic Capital, Inc.
2024-08-06
6.34%→7.43%
Strategic Capital, Inc.
2024-07-08
6.16%→6.34%
Strategic Capital, Inc.
2024-04-11
6.03%→6.16%
Strategic Capital, Inc.
2024-04-08
5.00%→6.03%
Effissimo Capital Management Pte. Ltd.
2024-01-09
6.39%→6.39%
Strategic Capital, Inc.
2023-12-26
5.00%
Effissimo Capital Management Pte. Ltd.
2023-11-14
6.39%→6.39%
Effissimo Capital Management Pte. Ltd.
2023-11-10
6.39%→6.39%
Effissimo Capital Management Pte. Ltd.
2023-10-03
6.39%→6.39%
Effissimo Capital Management Pte. Ltd.
2023-08-21
6.39%→6.39%
Effissimo Capital Management Pte. Ltd.
2023-07-20
6.30%→6.39%
Effissimo Capital Management Pte. Ltd.
2023-07-13
6.27%→6.30%
Effissimo Capital Management Pte. Ltd.
2023-07-12
5.50%→6.27%
Effissimo Capital Management Pte. Ltd.
2023-05-02
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2023-05-01
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2023-04-10
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2023-03-27
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2023-01-30
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2023-01-12
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2023-01-11
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-10-26
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-10-25
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-09-08
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-09-06
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-08-22
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-08-08
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-06-30
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-06-28
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-06-13
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-05-30
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-05-24
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-05-16
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-05-13
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-04-26
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-04-19
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-04-08
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-03-29
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-03-24
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-02-21
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2022-01-26
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2021-12-09
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2021-12-08
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2021-12-07
5.50%→5.50%
Effissimo Capital Management Pte. Ltd.
2021-09-29
5.50%→5.50%
Disclosures
No disclosures
Primary Source Filings
EDINETAmended
2026-10-08
Change Report
View PDF →
EDINETAmended
2026-10-08
Change Report
View PDF →
EDINETAmended
2026-10-07
Change Report
View PDF →
TDnet
2026-07-30
Q1 Earnings Flash
FY ending Mar 2027
View PDF →
EDINET
2026-06-23
Annual Securities Report
Period: Apr 2025 – Mar 2026
View PDF →
EDINET
2026-02-26
Large Shareholding Report
View PDF →
EDINET
2026-02-06
Large Shareholding Report
View PDF →
TDnet
2026-02-05
Q3 Earnings Flash
FY ending Mar 2026
View PDF →
EDINET
2025-11-13
Semi-Annual Securities Report
Period: Apr 2025 – Mar 2026
View PDF →
TDnet
2025-07-30
Q1 Earnings Flash
FY ending Mar 2026
View PDF →
EDINET
2025-07-09
Large Shareholding Report
View PDF →
EDINET
2025-07-09
Large Shareholding Report
View PDF →
EDINET
2025-06-24
Annual Securities Report
Period: Apr 2024 – Mar 2025
View PDF →
EDINET
2025-05-09
Large Shareholding Report
View PDF →
EDINET
2025-05-09
Large Shareholding Report
View PDF →
EDINET
2025-03-05
Large Shareholding Report
View PDF →
EDINET
2025-02-10
Large Shareholding Report
View PDF →
TDnet
2025-01-31
Q3 Earnings Flash
FY ending Mar 2025
View PDF →
EDINET
2024-11-13
Semi-Annual Securities Report
Period: Apr 2024 – Mar 2025
View PDF →
EDINET
2024-10-17
Large Shareholding Report
View PDF →
EDINET
2024-08-28
Large Shareholding Report
View PDF →
EDINET
2024-08-06
Large Shareholding Report
View PDF →
TDnet
2024-07-30
Q1 Earnings Flash
FY ending Mar 2025
View PDF →
EDINET
2024-07-08
Large Shareholding Report
View PDF →
EDINET
2024-06-25
Annual Securities Report
Period: Apr 2023 – Mar 2024
View PDF →
EDINET
2024-04-11
Large Shareholding Report
View PDF →
EDINET
2024-04-08
Large Shareholding Report
View PDF →
EDINET
2024-02-13
Quarterly Securities Report
Period: Oct 2023 – Dec 2023
View PDF →
EDINET
2024-01-09
Large Shareholding Report
View PDF →
EDINET
2023-12-26
Large Shareholding Report
View PDF →
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