Idemitsu Kosan Co.,Ltd.

OTCPK:IDKO.Y Stock Report

Market Cap: US$9.7b

Idemitsu KosanLtd Management

Management criteria checks 3/4

Idemitsu KosanLtd's CEO is Noriaki Sakai, appointed in Apr 2025, has a tenure of 1.33 years. total yearly compensation is ¥142.00M, comprised of 64.8% salary and 35.2% bonuses, including company stock and options. directly owns 0.01% of the company’s shares, worth $953.56K. The average tenure of the management team and the board of directors is 3.6 years and 3.7 years respectively.

Key information

Noriaki Sakai

Chief executive officer

JP¥142.0m

Total compensation

CEO salary percentage64.79%
CEO tenure1.3yrs
CEO ownership0.01%
Management average tenure3.6yrs
Board average tenure3.7yrs

Recent management updates

Recent updates

CEO Compensation Analysis

How has Noriaki Sakai's remuneration changed compared to Idemitsu KosanLtd's earnings?
DateTotal CompensationSalaryCompany Earnings
Jun 30 2026n/an/a

JP¥362b

Mar 31 2026JP¥142mJP¥92m

JP¥172b

Dec 31 2025n/an/a

JP¥29b

Sep 30 2025n/an/a

JP¥41b

Jun 30 2025n/an/a

JP¥14b

Mar 31 2025JP¥106mJP¥47m

JP¥104b

Dec 31 2024n/an/a

JP¥117b

Sep 30 2024n/an/a

JP¥163b

Jun 30 2024n/an/a

JP¥278b

Mar 31 2024JP¥108mJP¥49m

JP¥229b

Compensation vs Market: Noriaki's total compensation ($USD891.33K) is below average for companies of similar size in the US market ($USD14.41M).

Compensation vs Earnings: Noriaki's compensation has increased by more than 20% in the past year.

CEO

Noriaki Sakai (65 yo)

1.3yrs
Tenure
JP¥142,000,000
Compensation

Mr. Sakai is President of Idemitsu Kosan Co. Ltd. from April 1, 2025 and serves as its CEO. Mr. Sakai is Chief Financial Officer (Accounting Department and Finance Department) at Idemitsu Kosan Co. Ltd sin...

Leadership Team

NamePositionTenureCompensationOwnership
Noriaki Sakai
CEO, President & Director1.3yrsJP¥142.00m0.0098%
$ 953.6k
Takashi Sakata
CFO, Financial Strategyno datano datano data
Atsuhiko Hirano
Chief Operating Officerless than a yearJP¥106.00m0.0037%
$ 359.4k
Hiroshi Akiya
Senior Executive Officer & GM of Manufacturing & Technology Departmentno datano datano data
Shinko Sasaki
General Manager of Investor Relations Officeno datano datano data
Kazuma Ikeda
Managing Executive Officer2.6yrsno datano data
Hiroshi Watanabe
Senior Executive Officer7.3yrsno datano data
Tetsuji Mishina
Managing Executive Officer7.3yrsno datano data
Masahiko Sawa
EVP, Chief Strategy Officer4.2yrsno data0.0041%
$ 403.2k
Junzo Yamamoto
Senior Managing Executive Officer5.6yrsno datano data
Yoshimasa Kokubo
Managing Executive Officer3.6yrsno datano data
Hidenori Tanaka
Group Regional Head for Southeast Asia2.6yrsno datano data
3.6yrs
Average Tenure
62.5yo
Average Age

Experienced Management: IDKO.Y's management team is considered experienced (3.6 years average tenure).

Board Members

NamePositionTenureCompensationOwnership
Noriaki Sakai
CEO, President & Director5.2yrsJP¥142.00m0.0098%
$ 953.6k
Takashi Sakata
CFO, Financial Strategyless than a yearno datano data
Atsuhiko Hirano
Chief Operating Officer6.2yrsJP¥106.00m0.0037%
$ 359.4k
Kazuma Ikeda
Managing Executive Officerless than a yearno datano data
Masahiko Sawa
EVP, Chief Strategy Officer4.2yrsno data0.0041%
$ 403.2k
Shiori Nagata
Independent Outside Director2.2yrsno data0.000030%
$ 2.9k
Shunichi Kito
Representative Chairman13.2yrsJP¥155.00m0.016%
$ 1.6m
Jun Suzuki
Independent Outside Director3.2yrsno data0.0010%
$ 101.3k
Mio Kashiwamura
Independent Outside Director1.2yrsno datano data
Masakazu Idemitsu
Non-Executive Director7.3yrsno data1.05%
$ 102.1m
Kazunari Kubohara
Non-Executive Director7.3yrsno datano data
Sumiko Takeuchi
Independent Outside Directorless than a yearno datano data
3.7yrs
Average Tenure
58.5yo
Average Age

Experienced Board: IDKO.Y's board of directors are considered experienced (3.7 years average tenure).

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/08/10 08:10
End of Day Share Price 2026/08/10 00:00
Earnings2026/06/30
Annual Earnings2026/03/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Idemitsu Kosan Co.,Ltd. is covered by 18 analysts. 8 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Takashi EnomotoBofA Global Research
Takashi MiyazakiCitigroup Inc
David HewittCLSA