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Overview

Glass and Ceramics Products

GEOSTR Corporation

Geostar Corporation is a leading manufacturer of large-scale precast concrete products for civil engineering infrastructure in Japan, marketed under the 'GEOWARE' brand. The company's product portfolio spans roads, railways, tunnels, dams, waterways, airports, ports, and defense facilities, serving both public and private sector clients across the country. Geostar's competitive strength lies in its early adoption and technical leadership in precast construction methods, which offer advantages in reduced environmental impact, improved safety, and labor savings compared to conventional on-site concrete casting.

Market Cap

¥11.1B

US$70.5M

¥10.9B

US$69.5M

Stock¥361▼-0.82%

US$1 = ¥156.80 (2026-10-23)

LTM EV/EBITDA

4.8

LTM EV/EBIT

6.7

LTM PER

4.5

LTM PBR

0.4

Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-20.2%pt

Oct 24, 25 – Oct 23, 26StockTOPIX

1Mar 3, 26Market-wide: Following TOPIX decline

2Mar 4, 26Market-wide: Following TOPIX decline

3Mar 23, 26Market-wide: Following TOPIX decline

4Aug 7, 26Q1 FY2027/03 earnings announced

MC → EV Bridge

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Generating insights…

Performance & Balance

Revenue 5Y (¥B)

EBITDA 5Y (¥B)

Net Income 5Y (¥B)

Capital Structure

99%

EquityD/E 0.01xDebt

Liquidity vs Debt 5Y (¥B)▲ Net Cash

CashInv. Sec.Debt

Shareholders

Top 10 hold 62.1%

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

NIPPON STEEL CORPORATION

41.55%

HANWA CO.,LTD.

4.93%

Custody Bank of Japan, Ltd. (Trust Account)

3.81%

Nippon Steel Trading Corporation

2.74%

MM&KENZAI Corporation

2.45%

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

2.03%

Marubeni Itochu Sumisho Techno Steel Inc.

1.40%

MSIP CLIENT SECURITIES (Standing Proxy: Morgan Stanley MUFG Securities Co., Ltd.)

1.16%

Koichi IRIKO

1.08%

Morgan Stanley MUFG Securities Co., Ltd.

1.00%

Management

11 officers

Yutaka HOTTA

Representative Director, President; Head of Sales Division

Apr 1990 Joined Nippon Steel Corporation (now Nippon Steel Corporation) Oct 2012 Head of Building Materials Thin Plate Office, Thin Plate Sales Dept., Thin Plate Business Division, Nippon Steel Corporation Apr 2016 General Manager, Process Management Dept., Hirohata Works, Nippon Steel Corporation Apr 2018 General Manager, Building Materials Sales Dept., Building Materials Business Division, Nippon Steel Corporation Jun 2018 Director of the Company (resigned Jun 2021) Apr 2021 General Manager, Building Materials Development & Technology Dept., Plate & Building Materials Business Division, Nippon Steel Corporation Apr 2022 Advisor and Deputy Branch Manager, Osaka Branch, Nippon Steel Corporation Apr 2023 Standing Advisor of the Company Jun 2023 Director and Vice President of the Company Apr 2024 Representative Director, President of the Company May 2026 Representative Director, President of the Company; concurrently Head of Sales Division (current)

1966-05-19

Norihiko UDAGAWA

Director, Executive Officer, Head of Production Division

Apr 1989 Joined the Company Jun 2024 General Manager, Quality Assurance Dept., Technology Division of the Company Nov 2024 Deputy Head, Technology Division; concurrently General Manager, Quality Assurance Dept. of the Company Apr 2025 Head of Production Division; concurrently General Manager, Production Technology Dept. of the Company Apr 2026 Executive Officer, Head of Production Division of the Company (current) Jun 2026 Director, Executive Officer, Head of Production Division of the Company (scheduled)

1965-12-15

Naoto SAKAMORI

Full-time Corporate Auditor

Apr 1986 Joined Sumitomo Metal Industries, Ltd. (now Nippon Steel Corporation) Apr 2002 Manager, Tokyo Housing Building Materials Office, Building Materials Sales Dept., Steel Sheet & Building Materials Company, Sumitomo Metal Industries, Ltd. Jul 2008 Seconded to Sumikin Steel Co., Ltd. (now Nippon Steel Steel Co., Ltd.); Deputy General Manager, Sales Dept. Jun 2010 General Manager, Sales Dept., Sumikin Steel Co., Ltd. Jun 2017 Director, Sumikin Steel Co., Ltd. Apr 2018 Transferred to Nippon Steel Steel Co., Ltd.; Director Jun 2021 Corporate Auditor, Nippon Steel Steel Co., Ltd. May 2024 Non-Executive Advisor of the Company Jun 2024 Corporate Auditor of the Company (current)

1962-07-17

Hiroshi HIRAIZUMI

Director, Executive Officer, Head of Administration Division

Apr 1993 Joined Nippon Steel Corporation (now Nippon Steel Corporation) Apr 2022 General Manager, Labor & Procurement Dept., Setouchi Works, Nippon Steel Corporation; concurrently Deputy General Manager, Safety, Environment & Disaster Prevention Dept. Apr 2024 General Manager, Labor & Procurement Dept., Nagoya Works, Nippon Steel Corporation; concurrently Deputy General Manager, Safety, Environment & Disaster Prevention Dept. Mar 2026 Head of Administration Division of the Company (Executive Officer-equivalent status) Apr 2026 Executive Officer, Head of Administration Division of the Company (current) Jun 2026 Director, Executive Officer, Head of Administration Division of the Company (scheduled)

1970-11-24

Yoshinori INOUE

Non-Executive Director

Apr 1992 Joined Nippon Steel Corporation (now Nippon Steel Corporation) Apr 2020 General Manager, Shape Steel Dept., Kyushu Works, Nippon Steel Corporation Apr 2021 General Manager, Shape Steel Dept., Kansai Works, Nippon Steel Corporation Apr 2022 General Manager, Production Technology Dept., Kansai Works, Nippon Steel Corporation Apr 2023 Deputy Works Manager, Kansai Works (Wakayama Area), Nippon Steel Corporation; concurrently General Manager, Production Technology Dept. Apr 2025 General Manager, Shape Steel & Spiral Steel Pipe Technology Dept., Plate & Building Materials Business Division, Nippon Steel Corporation (current) Jun 2026 Director of the Company (scheduled)

1970-11-24

Atsushi TOKI

Non-Executive Director

Apr 1983 Registered as attorney-at-law, Dai-Ichi Tokyo Bar Association (current) Apr 1989 Partner, Okudaira & Toki Law Office Apr 1997 Representative, Meitetsu Sogo Law Office Dec 2001 Outside Corporate Auditor, Maruyama Manufacturing Co., Inc. Mar 2008 Partner, Seiwa Meitetsu Law Office Dec 2015 Outside Director (Audit and Supervisory Committee Member), Maruyama Manufacturing Co., Inc. (current) Jun 2016 Director of the Company (current) Sep 2018 Representative, Meitetsu Sogo Law Office (current)

1955-05-19

Shoji KUWAYAMA

Non-Executive Director

Apr 1979 Joined Marubeni Corporation Apr 2003 General Manager, Non-ferrous Metals Dept., Marubeni Corporation Apr 2008 Executive Officer; Acting Head of Metal Resources Division, Marubeni Corporation Jun 2012 Representative Director, Managing Executive Officer in charge of Metals Division, Marubeni Corporation Jun 2018 Representative Director, President, Marubeni Building Materials Leasing Co., Ltd. Jun 2021 Advisor, Marubeni Building Materials Leasing Co., Ltd. Jun 2022 Retired as Advisor, Marubeni Building Materials Leasing Co., Ltd. Jun 2023 Director of the Company (current) Jun 2023 Outside Corporate Auditor, Shinto Paint Co., Ltd. (current)

1956-04-15

Kaoruko OGASAWARA

Non-Executive Director

Oct 1996 Joined Aoyama Audit Corporation (now PwC Japan LLC) May 1999 Registered as Certified Public Accountant Jul 1999 Transferred to PricewaterhouseCoopers Tax Office (now PwC Tax Japan) Oct 2003 Joined ShinNihon Audit Corporation (now EY ShinNihon LLC) Jul 2012 Established Ogasawara Accounting Office (Certified Public Accountant and Certified Tax Accountant); Director (current) Aug 2015 Established Ogasawara & Company Inc.; Representative Director (current) Nov 2022 Auditor, Soka Chamber of Commerce and Industry (current) Jun 2024 Outside Corporate Auditor, Kanda Holdings Co., Ltd. (current) Jun 2024 Director of the Company (current)

1965-08-23

Satoru KANAUCHI

Corporate Auditor

Apr 1998 Joined Nippon Steel Corporation (now Nippon Steel Corporation) May 2021 Head of Personnel Office, Human Resources & Labor Relations Dept., Nippon Steel Corporation Apr 2023 Head of Secretariat Office, General Affairs Dept., Nippon Steel Corporation Apr 2026 General Manager, Plate & Building Materials Sales Dept., Plate & Building Materials Business Division, Nippon Steel Corporation (current) Jun 2026 Corporate Auditor of the Company (scheduled)

1975-05-16

Hiroshi IKEUCHI

Corporate Auditor

Apr 1992 Joined Kumagai Gumi Co., Ltd. May 2009 Section Manager, President's Office, Kumagai Gumi Co., Ltd. Apr 2018 Group G Manager, Business Planning Dept., Management Planning Headquarters, Kumagai Gumi Co., Ltd. Apr 2019 General Manager, Business Planning Dept., Management Planning Headquarters, Kumagai Gumi Co., Ltd. Apr 2023 General Manager, Personnel & General Affairs Dept., Administration Headquarters, Kumagai Gumi Co., Ltd. Apr 2024 General Manager, Personnel Dept., Administration Headquarters, Kumagai Gumi Co., Ltd. Jun 2024 Corporate Auditor of the Company (current) Apr 2026 Deputy Head, Administration Headquarters; General Manager, Finance Dept., Kumagai Gumi Co., Ltd. (current)

1968-12-31

Ryoichi HATTORI

Corporate Auditor

Apr 1985 Joined Fuji Bank, Ltd. (now Mizuho Bank, Ltd.) Apr 2002 Executive Counselor, Integrated Risk Management Dept., Mizuho Financial Group, Inc. Apr 2011 Deputy General Manager, Integrated Risk Management Dept., Mizuho Corporate Bank, Ltd. (now Mizuho Bank, Ltd.) Jul 2013 Chief Auditor, Internal Audit Dept., Mizuho Bank, Ltd. Apr 2016 Securities Inspector, Securities and Exchange Surveillance Commission Mar 2022 Retired from the Securities and Exchange Surveillance Commission Jun 2023 Corporate Auditor of the Company (current)

1961-08-01

Large Shareholding Reports

No filings

Disclosures

No disclosures

Primary Source Filings

TDnet

2026-08-06

Q1 Earnings Flash

FY ending Mar 2027

GEOSTR Corporation

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GEOSTR Corporation

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