Governance Idemitsu Kosan Co.,Ltd.

5019

JP3142500002

Oil & Gas Refining and Marketing

Delayed Japan Exchange Other stock markets 14:30:00 22/01/2026 HKT			5-day change	1st Jan Change
1,288.50 ^JPY	+1.70%		+1.02%	+8.92%

01-14	Vietnam's Nghi Son refinery processes first batch of non-Kuwaiti crude oil	RE
01-07	Japan Refiners See Little Scope for Venezuelan Crude	MT

Executive Committee: Idemitsu Kosan Co.,Ltd.

Manager

Positions heldSince

Noriaki Sakai

64 year

President

01/04/2025

Takashi Sakata

Director of Finance/CFO

01/04/2025

Tsutomu Yoshioka

63 year

Comptroller/Controller/Auditor

01/04/2021

Hidefumi Kodama

61 year

Comptroller/Controller/Auditor

01/06/2022

Composition of the Board of Directors: Idemitsu Kosan Co.,Ltd.

Director

CommitteesSince

Shunichi Kito

69 year

Chairman

01/04/2025

Shiori Nagata

47 year

Audit Committee

01/04/2024

Jun Suzuki

67 year

Director/Board Member

01/06/2023

Masahiko Sawa

63 year

Director/Board Member

01/06/2024

Atsuhiko Hirano

63 year

Director/Board Member

01/06/2020

Makasazu Idemitsu

57 year

Director/Board Member

01/04/2019

Kazunari Kubohara

58 year

Director/Board Member

01/04/2019

Noriaki Sakai

64 year

Director/Board Member

01/06/2021

Takeo Kikkawa

74 year

Director/Board Member	29/06/2017
Independent Dir/Board Member	29/06/2017

Latest Appointments: Idemitsu Kosan Co.,Ltd.

13/05/25	Idemitsu Kosan Co.,Ltd. Announces Director Retirement, Effective June 25, 2025	CI
12/02/25	Idemitsu Kosan Co: Executive VP Noriaki Sakai To Become President, Effective April 1	RE
12/02/25	Idemitsu Kosan Co.,Ltd. Announces Changes in Representative Directors	CI
14/05/24	Idemitsu Kosan Co.,Ltd. Announces Management Retirements, Effective June 25, 2024	CI
09/05/23	Idemitsu Kosan Co.,Ltd. Announces Retirement of Mitsunobu Koshiba, Effective June 22, 2023	CI
10/05/22	Idemitsu Kosan Co.,Ltd. Announces Board Retirements	CI
15/08/19	Chugoku Electric Power : Kansai Electric, Marubeni delay construction of coal-fired power plant	RE

More news

Former Officers and Directors: Idemitsu Kosan Co.,Ltd.

Insider

Positions held

SinceUntil

Takashi Tsukioka

Director/Board Member	01/06/2009	01/04/2018
Chairman	01/04/2018	01/06/2020
President	01/06/2013	01/04/2018

Daisuke Seki

Director/Board Member	01/04/1977	28/03/2018
Corporate Officer/Principal	01/06/2014	28/03/2018
Sales & Marketing	01/06/2013	01/06/2014

Hiroshi Seki

Director/Board Member	01/06/2013	28/03/2018
Corporate Officer/Principal	01/04/1977	28/03/2018

Yasuo Izu

Comptroller/Controller/Auditor

05/01/2010

Nobuo Seo

Comptroller/Controller/Auditor

15/02/2011

Kazuo Maruyama

Director/Board Member	28/06/2017	-
Corporate Officer/Principal	01/04/1981	28/06/2017

Sakae Hirano

Comptroller/Controller/Auditor	01/06/2015	-
Public Communications Contact	23/08/2011	-

Takashi Matsushita

Director/Board Member	01/06/2013	-
Corporate Officer/Principal	01/06/2013	-

Katsumi Saito

Director/Board Member	04/07/2013	-
Corporate Officer/Principal	01/04/1978	04/07/2013

Takeshi Yamada

Director/Board Member	01/04/1977	-
Chief Tech/Sci/R&D Officer	01/04/1977	-

Katsuo Sato

Comptroller/Controller/Auditor

01/04/1977

Yoshihisa Matsumoto

Director/Board Member	01/04/1977	-
Corporate Officer/Principal	01/04/1977	-

Osamu Kamimae

Director/Board Member	01/04/1976	-
Corporate Officer/Principal	01/04/1976	-

Yasunori Maeda

Director/Board Member	01/04/1976	-
Corporate Officer/Principal	01/04/1976	01/06/2011

Kiyonobu Kobayashi

Comptroller/Controller/Auditor

01/04/1975

Junjiro Kuramochi

Director/Board Member

01/04/1975

Seiji Fukunaga

Director/Board Member

01/04/1973

Mitsuru Soneda

Comptroller/Controller/Auditor	03/08/2011	-
Director/Board Member	05/01/2010	-
Chief Tech/Sci/R&D Officer	03/08/2011	-
Director of Finance/CFO	11/10/2010	03/08/2011
Human Resources Officer	03/08/2011	-

Kenichi Matsui

Comptroller/Controller/Auditor	01/06/2001	-
Director/Board Member	01/06/2005	-
Chief Tech/Sci/R&D Officer	01/06/2010	-
Human Resources Officer	01/06/2010	-
Public Communications Contact	01/06/2010	-

Akiro Nishiyori

Director/Board Member	01/04/1973	-
Corporate Officer/Principal	15/12/2011	-
President	01/04/1973	15/12/2011

Kazuhisa Nakano

Director/Board Member	01/04/1971	01/06/2013
Chairman	01/06/2013	-
President	01/04/1971	01/06/2013

Shigeki Nakajima

Corporate Officer/Principal

Hiroaki Muko

Corporate Officer/Principal

Yasuo Kushihashi

Chief Tech/Sci/R&D Officer	-	14/03/2012
Corporate Officer/Principal	14/03/2012	-

Kosuke Tsuji

Corporate Officer/Principal

Tetsuo Suzuki

Corporate Officer/Principal

12/10/2010

Shuji Sakamoto

Corporate Officer/Principal

Ukyo Takahashi

Corporate Officer/Principal

Sakugoro Matsuda

Corporate Officer/Principal

Yasuhiro Haba

Corporate Officer/Principal

Norihiko Tsuda

Corporate Officer/Principal

12/10/2010

Ryuhei Masumoto

Corporate Officer/Principal

Ichiro Tsukuda

Corporate Officer/Principal

Yasushi Takakuwa

Corporate Officer/Principal

Seiji Futami

Corporate Officer/Principal

Yoshikuni Yamakawa

Corporate Officer/Principal

Kunikazu Ohashi

Corporate Officer/Principal

Hiroshi Matsui

Sales & Marketing

Atsushi Fukushima

Corporate Officer/Principal

Takehiko Kawasaki

Human Resources Officer	-	01/06/2014
Corporate Officer/Principal	01/07/2016	-
Sales & Marketing	01/07/2014	-

Kiyotsugu Suita

Corporate Officer/Principal

Atsushi Wakuda

Corporate Officer/Principal

11/10/2010

Takayuki Endo

Comptroller/Controller/Auditor

11/10/2010

Hisaichi Tohyama Masao Harada

Corporate Officer/Principal

Yoshiaki Yoshioka

Corporate Officer/Principal

Teruo Umayabashi

Director/Board Member

Susumu Ohga

Director/Board Member

Kunihiro Motegi

Director/Board Member

Naotaka Noda

Director/Board Member

19/02/2010

Osamu Kubo

Director/Board Member

19/02/2010

Kiyoo Inai

Director/Board Member

Tsuyoshi Hosokawa

Director/Board Member

Shuji Sato

Director/Board Member

Hidekazu Shiraki

Director/Board Member

Masaru Morita

Director/Board Member

Kyo Kusumoto

Director/Board Member

Atsuo Hashimoto

Director/Board Member

Shuichi Omiya

Director/Board Member	05/01/2010	-
Corporate Officer/Principal	18/09/2009	-

Takahisa Hiruma

Director/Board Member	05/01/2010	-
Corporate Officer/Principal	05/01/2010	-

Yoshinori Kawamoto

Director/Board Member	05/01/2010	-
Corporate Officer/Principal	05/01/2010	-

Zenichi Suda

President

Yoshihisa Hosokawa

Corporate Officer/Principal

05/01/2010

Hiroto Okamura

Corporate Officer/Principal

05/01/2010

Akira Idemitsu

Chairman

Masaru Toriyama

Public Communications Contact

11/10/2010

Sukeaki Ota

Comptroller/Controller/Auditor

Akihiko Tembo

Chairman

01/04/1964

Masayuki Iwamura

Corporate Officer/Principal

31/01/2011

Sazo Idemitsu

Founder

20/06/1911

Age distribution of managers

Parity Men Women

Male	13
Female	1

Of which Executive Committee

Male	4
Female	0

Of which Directors

Male	8
Female	1

Revisions

Révisions CA 1 an

Révisions CA 4 mois

Révisions CA 1 mois

Révisions BNA 1 an

Révisions BNA 4 mois

ESG MSCI

Environnement

Social

Gouvernance

Polémique

Controverses Ethiques

Controverses sur les droits de l'Homme

Controverses Subventions fiscales

Conforme à la finance Islamique

Idemitsu Kosan Co Ltd is Japan-based company primarily engaged in fossil fuel-related businesses. The Company operates five business segments. The Fuel Oil segment is engaged in the production, sales, import & export, and trading of refined petroleum products. The Basic Chemicals Segment is engaged in the production and sale of olefins and aromatics products. The High Functional Materials segment is engaged in lubricants, functional chemicals, electronic materials, functional pavement materials, and agribio products. The Power & Renewable Energy segment is engaged in power generation (includes thermal, solar, wind), power sales, and solar cell operations. The Resources segment is engaged in exploration, development, production, and sales of energy resources such as crude oil, natural gas, and coal. The Company also conducts insurance and intra-group service businesses.

Employees

13,814

Sector

Oil & Gas Refining and Marketing

Calendar

02-10 - Q3 2025 Earnings Release

More about the company