Yamax Corporation | OpenBizGraph

§01

Basic information

BASIC

Head office: 3-9-5 Suizenji, Chuo-ku, Kumamoto City, Kumamoto Prefecture
Chief executive: Hoshimori Taku
Capital: 1,752,040,000 　(17 100 million)
Employees (non-consolidated): 536 people
Employees (consolidated): 536 people
Start date: 1963-10-10
End date

§02

Websites

1 DOMAINS

Yhttps://www.yamax.co.jp/

§03

Business

3

Civil engineering cement product businessConstruction cement product businessHousing business

§04

Related companies

13 COMPANIES

Company name	Group	Parent	Subsidiary	Customer	Supplier	Alliance	Bank	Shareholder
H.O.C Inc. Group
HOC YAMAX Co., Ltd. Group
株式会社ミナト建材 Group
Tohoku Yamax Co., Ltd. Group
Yamax Corporation Group
各建設会社 Customer
各県 Customer
各県及び市町村・各建設会社 Customer
Ministry of Land, Infrastructure, Transport and Tourism Customer
General Incorporated Association Municipal Taxation Association Customer
Ministry of Agriculture, Forestry and Fisheries Customer
Urban Renaissance Agency Customer
Fukuoka Bank Bank

Names without a link are companies not yet registered in OpenBizGraph

§05

Network

NETWORK

§06

History

29 EVENTS

1963-10

Established Yamau Concrete Industry Co., Ltd. in Shimabara City, Nagasaki Prefecture, and started designing, manufacturing, and selling various concrete secondary products

1963-10-10

Established Yamau Concrete Industry Co., Ltd. in Shimabara City, Nagasaki Prefecture, and started business related to the design, manufacture, and sale of various concrete secondary products

1963-10-10

Established Yamau Concrete Industry Co., Ltd. in Shimabara City, Nagasaki Prefecture on October 10, Showa 38, and started business related to the design, manufacture, and sale of various concrete secondary products

1964-02

Newly established Shimabara Factory in Kunimi Town, Minamimatsuura District, Nagasaki Prefecture (now Unzen City)

1967-08

Newly established Matsubashi Factory in Matsubashi Town, Shimomatsu District, Kumamoto Prefecture (now Uto City)

1967-11

Relocated headquarters to Kunimi Town, Minamimatsuura District, Nagasaki Prefecture (now Unzen City)

1973-09

Newly established Ogawa Factory in Ogawa Town, Shimomatsu District, Kumamoto Prefecture (now Uto City)

1979-07

Newly established Saitama Factory in Hanyu City, Saitama Prefecture

1981-08

Newly established Sasebo Factory in Yoshii Town, Kitamatsuura District, Nagasaki Prefecture (now Sasebo City)

1989-01

Newly established Nagasu Factory in Nagasu Town, Tamana District, Kumamoto Prefecture

1990-07

Relocated headquarters to Kumamoto City, Kumamoto Prefecture

1991-09

Changed trade name to Yamax Corporation

1993-10

Newly established Setaka Factory in Setaka Town, Miyama District, Fukuoka Prefecture (now Miyama City)

1995-11

Listed shares on the over-the-counter market of the Japan Securities Dealers Association

1997-11

Established Minato Construction Materials Co., Ltd. (consolidated subsidiary)

2004-12

Cancelled over-the-counter registration with the Japan Securities Dealers Association and listed shares on the JASDAQ Securities Exchange

2006-05

Established Fukuoka Yamax Co., Ltd. (now a consolidated subsidiary)

2010-04

Listed shares on the Osaka Securities Exchange JASDAQ Market following the merger of the JASDAQ Securities Exchange and Osaka Securities Exchange

2011-08

Newly established Hitoyoshi Factory in Sagara Village, Kuma District, Kumamoto Prefecture

2012-03

Tone Geotech Co., Ltd. (now: Tohoku Yamax Co., Ltd., a consolidated subsidiary) acquired shares

2012-04

Ogawa Factory PC component quality certification (N certification) obtained (Society) Prefabricated Building Association: Saitama Factory PC component quality certification (N certification) obtained (Society) Prefabricated Building Association

2012-04

Ogawa Factory PC component quality certification (N certification) obtained (Society) Prefabricated Building Association: Saitama Factory PC component quality certification (N certification) obtained (Society) Prefabricated Building Association

2012-04

Ogawa Factory PC component quality certification (N certification) obtained (Society) Prefabricated Building Association, Saitama Factory PC component quality certification (N certification) obtained (Society) Prefabricated Building Association

2013-04

Established HOC Yamax Co., Ltd. (related company) in Sasebo City, Nagasaki Prefecture, through joint investment with H.O.C Co., Ltd. (Nagasaki Prefecture, Omura City)

2013-07

Listed on the Tokyo Stock Exchange JASDAQ (Standard) following the integration of the Tokyo Stock Exchange and Osaka Securities Exchange

2014-04

Merged with Minato Building Materials Co., Ltd. (consolidated subsidiary)

2016-04

Choshu Factory PC component quality certification (N certification) obtained (Society) Prefabricated Building Association

2020-04

Made HOC Yamax Co., Ltd. a consolidated subsidiary

2022-04

Due to the review of market segments of the Tokyo Stock Exchange, transitioned from JASDAQ to the Standard Market of the Tokyo Stock Exchange

§07

News

21 ARTICLES

2026-11-12

2027 Q3 Interim Financial Results Presentation

Yamax Corporation announced the 2027 Q3 interim financial results presentation.

2026-11-12

Announcement of the Difference Between the 2027 March Fiscal Year Q2 Earnings Forecast and Actual Results

Yamax Corporation announced information regarding the difference between the earnings forecast and actual results for the second quarter (interim period) of the fiscal year ending March 2027. Please refer to the PDF posted on the company's website (https://www.yamax.co.jp/info_img/1794459101_3.pdf) for details.

2026-11-12

2027 Q2 (Interim) Financial Summary

Yamax Co., Ltd. announced the financial summary for the second quarter of fiscal year 2027. Please see the PDF for details.

2026-11-06

Yamax Co., Ltd. Employees Receive Kumamoto Prefecture Invention Association President's Award

Employees of Yamax Co., Ltd. received the Kumamoto Prefecture Invention Association President's Award at the 2026 Kyushu Regional Invention Awards hosted by the Public Interest Incorporated Association of Inventions, thanks to the pressure-adhesive joining method (PJ method) developed by the company.

2026-10-19

Transfer resulting from merger of certified public accountants and others

We announced the transfer resulting from the merger of certified public accountants and others. Detailed information can be found in the published PDF.

2026-10-16

Investment in the Kumamoto Problem-Solving Fund

Yamax Corporation announced its investment in the Kumamoto Problem-Solving Fund, which aims to address regional challenges in Kumamoto. Details can be found in the provided PDF.

2026-08-28

Damage Resulting from the 2026 Kumamoto Earthquake

Yamax Co., Ltd. announced that it incurred damage as a result of the 2026 Kumamoto earthquake. Further announcements are needed for details about the extent of the damage and the company’s response.

2026-08-28

Notice of Revised Earnings Forecast and Unchanged Dividend Forecast

Yamax Co., Ltd. announced on August 28, 2026, that it had revised its earnings forecast while leaving its dividend forecast unchanged. No further details were provided in the text.

2026-08-06

First Quarter Financial Results for Fiscal Year Ending March 2027

Yamax Corporation has announced its financial results for the first quarter of the fiscal year ending March 2027. Detailed financial information and performance status will be available in future reports.

2026-08-04

Notice Regarding the Impact of the 2026 Kumamoto Earthquake (Second Report)

Yamax Corporation extends its sympathies to those affected by the 2026 Kumamoto Earthquake. This report provides an update on the company's current damage status. Further details on the extent of damage and response will be provided as more information becomes available.