Press Releases | Yohkoh Bussan Co., Ltd.

2025

June 27, 2025	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 27, 2025 Representative Director & President Hidetoshi Aota Directors Akito Matsugashita, Hayato Kawarai, Shinichi Uno and Hiroya Misaki Corporate Auditor Kazuhiko Nagano

June 27, 2025

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 27, 2025

Representative Director & President: Hidetoshi Aota
Directors: Akito Matsugashita, Hayato Kawarai, Shinichi Uno and Hiroya Misaki
Corporate Auditor: Kazuhiko Nagano

2024

December 9, 2024	Steel Group - III relocated and Himeji Sales Office opened
June 27, 2024	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 27, 2024 Representative Director & President Hidetoshi Aota Directors Akito Matsugashita, Hayato Kawarai and Hiroya Misaki Corporate Auditor Kazuhiko Nagano

December 9, 2024

Steel Group - III relocated and Himeji Sales Office opened

June 27, 2024

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 27, 2024

Representative Director & President: Hidetoshi Aota
Directors: Akito Matsugashita, Hayato Kawarai and Hiroya Misaki
Corporate Auditor: Kazuhiko Nagano

2023

June 29, 2023	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2023 Representative Director & President Hidetoshi Aota Directors Hiroaki Otani, Akito Matsugashita and Hiroya Misaki Corporate Auditor Kazuhiko Nagano

June 29, 2023

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2023

Representative Director & President: Hidetoshi Aota
Directors: Hiroaki Otani, Akito Matsugashita and Hiroya Misaki
Corporate Auditor: Kazuhiko Nagano

2022

June 27, 2022	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 27, 2022 Representative Director & President Koichi Tajima Managing Director Mitsuru Inoue Directors Hiroaki Otani, Akito Matsugashita, Tadashi Ono and Hiroya Misaki Corporate Auditor Kazuhiko Nagano
April 1, 2022	Notice of organizational reform we revised the organization within Head Office Sales Department on April 1, 2022 　(1) Renamed Sreel Section to Steel Group - I 　(2) Renamed Steel Distribution Center to Steel Group - II 　(3) RenamedChugoku & Shikoku Sales Section to Steel Group - III 　(4) Renamed Formed & Fabricated Products Section to Formed & Fabricated Products Group

June 27, 2022

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 27, 2022

Representative Director & President: Koichi Tajima
Managing Director: Mitsuru Inoue
Directors: Hiroaki Otani, Akito Matsugashita, Tadashi Ono and Hiroya Misaki
Corporate Auditor: Kazuhiko Nagano

April 1, 2022

Notice of organizational reform

we revised the organization within Head Office Sales Department on April 1, 2022

　(1) Renamed Sreel Section to Steel Group - I

　(2) Renamed Steel Distribution Center to Steel Group - II

　(3) RenamedChugoku & Shikoku Sales Section to Steel Group - III

　(4) Renamed Formed & Fabricated Products Section to Formed & Fabricated Products Group

2021

June 28, 2021	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2021 Representative Director & President Koichi Tajima Managing Director Mitsuru Inoue Directors Hiroaki Otani, Tadashi Ono and Hiroya Misaki Corporate Auditor Kazuhiko Nagano
April 1, 2021	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on April 1, 2021 Representative Director & President Koichi Tajima Managing Director Mitsuru Inoue Directors Masahiro Miki, Hiroaki Otani, Tadashi Ono and Yoshitaka Tachibana Corporate Auditor Kazuhiko Nagano

June 28, 2021

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2021

Representative Director & President: Koichi Tajima
Managing Director: Mitsuru Inoue
Directors: Hiroaki Otani, Tadashi Ono and Hiroya Misaki
Corporate Auditor: Kazuhiko Nagano

April 1, 2021

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on April 1, 2021

Representative Director & President: Koichi Tajima
Managing Director: Mitsuru Inoue
Directors: Masahiro Miki, Hiroaki Otani, Tadashi Ono and Yoshitaka Tachibana
Corporate Auditor: Kazuhiko Nagano

2020

June 26, 2020	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 26, 2020 Representative Director & President Shin-ichi Tominaga Managing Director Koichi Tajima Directors Masahiro Miki, Hiroaki Otani, Tadashi Ono and Yoshitaka Tachibana Corporate Auditor Kazuhiko Nagano
April 1, 2020	Personnel moves involving executive officers Resolutions passed at the Extraordinary shareholders' meeting and Board of Directors' meeting held on April 1, 2020 Directors Hiroaki Otani

June 26, 2020

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 26, 2020

Representative Director & President: Shin-ichi Tominaga
Managing Director: Koichi Tajima
Directors: Masahiro Miki, Hiroaki Otani, Tadashi Ono and Yoshitaka Tachibana
Corporate Auditor: Kazuhiko Nagano

April 1, 2020

Personnel moves involving executive officers

Resolutions passed at the Extraordinary shareholders' meeting and Board of Directors'

meeting held on April 1, 2020

Directors: Hiroaki Otani

2019

June 27, 2019	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2019 Representative Director & President Shin-ichi Tominaga Managing Director Koichi Tajima Directors Masahiro Miki, Tadashi Ono and Yoshitaka Tachibana Corporate Auditor Kazuhiko Nagano
May 13, 2019	Relocation of the Tokyo Branch to Kayaba-cho, Nihonbashi
April 1, 2019	Relocated the Nishinihon Branch to the Head Office and changed the name to the Chugoku ＆ Shikoku Sales Section of the Head Office Sales Department

June 27, 2019

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2019

Representative Director & President: Shin-ichi Tominaga
Managing Director: Koichi Tajima
Directors: Masahiro Miki, Tadashi Ono and Yoshitaka Tachibana
Corporate Auditor: Kazuhiko Nagano

May 13, 2019

Relocation of the Tokyo Branch to Kayaba-cho, Nihonbashi

April 1, 2019

Relocated the Nishinihon Branch to the Head Office and changed the name to the Chugoku ＆ Shikoku Sales Section of the Head Office Sales Department

2018

June 28, 2018	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2018 Representative Director & President Shin-ichi Tominaga Managing Director Koichi Tajima Directors Masahiro Miki, Tadashi Ono and Yoshitaka Tachibana Corporate Auditor Hiroaki Kimura
April 2, 2018	Personnel moves involving executive officers Resolutions passed at the Extraordinary shareholders' meeting and Board of Directors' meeting held on April 2, 2018 Representative Director & President Shin-ichi Tominaga Former President, Tatsuro Isomoto acceded to an advisor.

June 28, 2018

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2018

Representative Director & President: Shin-ichi Tominaga
Managing Director: Koichi Tajima
Directors: Masahiro Miki, Tadashi Ono and Yoshitaka Tachibana
Corporate Auditor: Hiroaki Kimura

April 2, 2018

Personnel moves involving executive officers

Resolutions passed at the Extraordinary shareholders' meeting and Board of Directors'

meeting held on April 2, 2018

Representative Director & President: Shin-ichi Tominaga

Former President, Tatsuro Isomoto acceded to an advisor.

2017

July 24, 2017	Relocation of the Nishinihon Branch to Toyozawa-cho, Himeji
June 29, 2017	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2017 Representative Director & President Tatsuro Isomoto Managing Director Koichi Tajima Directors Masahiro Miki, Tadashi Ono and Yoshitaka Tachibana Corporate Auditor Hiroaki Kimura

July 24, 2017

Relocation of the Nishinihon Branch to Toyozawa-cho, Himeji

June 29, 2017

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2017

Representative Director & President: Tatsuro Isomoto
Managing Director: Koichi Tajima
Directors: Masahiro Miki, Tadashi Ono and Yoshitaka Tachibana
Corporate Auditor: Hiroaki Kimura

2016

June 29, 2016	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2016 Representative Director & President Tatsuro Isomoto Managing Director Koichi Tajima Directors Osamu Monno, Tadashi Ono and Yoshitaka Tachibana Corporate Auditor Hiroaki Kimura

June 29, 2016

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2016

Representative Director & President: Tatsuro Isomoto
Managing Director: Koichi Tajima
Directors: Osamu Monno, Tadashi Ono and Yoshitaka Tachibana
Corporate Auditor: Hiroaki Kimura

2015

June 29, 2015	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2015 Representative Director & President Tatsuro Isomoto Directors Osamu Monno, Koichi Tajima, Tadashi Ono and Yoshitaka Tachibana Corporate Auditor Hiroaki Kimura

June 29, 2015

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2015

Representative Director & President: Tatsuro Isomoto
Directors: Osamu Monno, Koichi Tajima, Tadashi Ono and Yoshitaka Tachibana
Corporate Auditor: Hiroaki Kimura

2014

July 1, 2014	Corporate website updated
June 30, 2014	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 30, 2014 Representative Director & President Tatsuro Isomoto Senior Managing Director Kiyoshi Yabuki Directors Osamu Monno, Koichi Tajima and Hidetoshi Aota Corporate Auditor Hiroaki Kimura
January 1, 2014	Reorganization of the Head Office Sales Department Establishment of the Formed & Fabricated Products Section and name of Sales Section changed to Steel Section.

July 1, 2014

Corporate website updated

June 30, 2014

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 30, 2014

Representative Director & President: Tatsuro Isomoto
Senior Managing Director: Kiyoshi Yabuki
Directors: Osamu Monno, Koichi Tajima and Hidetoshi Aota
Corporate Auditor: Hiroaki Kimura

January 1, 2014

Reorganization of the Head Office Sales Department

Establishment of the Formed & Fabricated Products Section and name of Sales Section changed to Steel Section.

2013

June 28, 2013	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2013 Representative Director & President Koji Kishimoto Senior Managing Director Kiyoshi Yabuki Directors Mitsugu Ikeno, Osamu Monno, Koichi Tajima and Hidetoshi Aota Corporate Auditor Hideyuki Sasaki

June 28, 2013

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2013

Representative Director & President: Koji Kishimoto
Senior Managing Director: Kiyoshi Yabuki
Directors: Mitsugu Ikeno, Osamu Monno, Koichi Tajima and Hidetoshi Aota
Corporate Auditor: Hideyuki Sasaki

2012

June 28, 2012	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2012 Representative Director & President Koji Kishimoto Senior Managing Director Kiyoshi Yabuki Directors Mitsugu Ikeno, Osamu Monno, Koichi Tajima and Hidetoshi Aota Corporate Auditor Hideyuki Sasaki
May 31, 2012	Closure of the Himeji Steel Distribution Center
May 21, 2012	Relocation of the Raw Material & Supply Department to Sanyo Special Steel

June 28, 2012

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 28, 2012

Representative Director & President: Koji Kishimoto
Senior Managing Director: Kiyoshi Yabuki
Directors: Mitsugu Ikeno, Osamu Monno, Koichi Tajima and Hidetoshi Aota
Corporate Auditor: Hideyuki Sasaki

May 31, 2012

Closure of the Himeji Steel Distribution Center

May 21, 2012

Relocation of the Raw Material & Supply Department to Sanyo Special Steel

2011

October 1, 2011	Relocation of the Nishinihon Branch to Noda-cho, Shikama-ku, Himeji
June 29, 2011	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2011 Representative Director & President Koji Kishimoto Senior Managing Director Kiyoshi Yabuki Directors Mitsugu Ikeno, Osamu Monno, Koichi Tajima and Masaharu Kobayashi Corporate Auditor Hideyuki Sasaki
May 1, 2011	Relocation of the head office to Chuo-ku, Osaka. Reorganization of the Osaka Branch into the Head Office Sales Department.

October 1, 2011

Relocation of the Nishinihon Branch to Noda-cho, Shikama-ku, Himeji

June 29, 2011

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2011

Representative Director & President: Koji Kishimoto
Senior Managing Director: Kiyoshi Yabuki
Directors: Mitsugu Ikeno, Osamu Monno, Koichi Tajima and Masaharu Kobayashi
Corporate Auditor: Hideyuki Sasaki

May 1, 2011

Relocation of the head office to Chuo-ku, Osaka. Reorganization of the Osaka Branch into the Head Office Sales Department.

2010

June 29, 2010	Personnel moves involving executive officers Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2010 Representative Director & President Koji Kishimoto Senior Managing Director Kiyoshi Yabuki Directors Sigeshi Hata, Noburu Tanaka, Mitsugu Ikeno, Osamu Monno and Masaharu Kobayashi Corporate Auditor Hideyuki Sasaki
June 1, 2010	Establishment of IP telephone line (number with a 050 prefix) +81-50-3733-2488　Steel Sales Administration Department +81-50-3733-2500　Tokyo Branch +81-50-3733-2505　Nagoya Branch +81-50-3733-2494　Osaka Branch +81-50-3733-2490　Nishinihon Branch +81-50-3733-2499　Kyushu Branch +81-50-3733-2490　Raw Material & Supply Department

June 29, 2010

Personnel moves involving executive officers

Resolutions passed at the shareholders' meeting and Board of Directors' meeting held on June 29, 2010

Representative Director & President: Koji Kishimoto
Senior Managing Director: Kiyoshi Yabuki
Directors: Sigeshi Hata, Noburu Tanaka, Mitsugu Ikeno, Osamu Monno and Masaharu Kobayashi
Corporate Auditor: Hideyuki Sasaki

June 1, 2010

Establishment of IP telephone line (number with a 050 prefix)

+81-50-3733-2488　Steel Sales Administration Department
+81-50-3733-2500　Tokyo Branch
+81-50-3733-2505　Nagoya Branch
+81-50-3733-2494　Osaka Branch
+81-50-3733-2490　Nishinihon Branch
+81-50-3733-2499　Kyushu Branch
+81-50-3733-2490　Raw Material & Supply Department