Chiome Bioscience Inc.

TSE:4583 Stock Report

Market Cap: JP¥5.2b

Chiome Bioscience Management

Management criteria checks 2/4

Chiome Bioscience's CEO is Masamichi Koike, appointed in Jan 2025, has a tenure of 1.42 years. directly owns 0.048% of the company’s shares, worth ¥2.46M. The average tenure of the management team and the board of directors is 6 years and 4.3 years respectively.

Key information

Masamichi Koike

Chief executive officer

n/a

Total compensation

CEO salary percentagen/a
CEO tenure1.4yrs
CEO ownership0.05%
Management average tenure6yrs
Board average tenure4.3yrs

Recent management updates

Recent updates

Analysis Article Oct 10

Is Chiome Bioscience (TSE:4583) Weighed On By Its Debt Load?

Howard Marks put it nicely when he said that, rather than worrying about share price volatility, 'The possibility of...
Analysis Article Nov 21

Is Chiome Bioscience (TSE:4583) Weighed On By Its Debt Load?

Legendary fund manager Li Lu (who Charlie Munger backed) once said, 'The biggest investment risk is not the volatility...
Analysis Article Jun 28

Is Chiome Bioscience (TSE:4583) Using Too Much Debt?

Warren Buffett famously said, 'Volatility is far from synonymous with risk.' It's only natural to consider a company's...

CEO

Masamichi Koike (64 yo)

1.4yrs
Tenure

Dr. Masamichi Koike, PhD wad the Head of Research Function of R&D Division and Fellow at Kyowa Kirin Co. Ltd. He serves as Executive Director at Chiome Bioscience Inc. since March 2023 and serves as its Pr...


Leadership Team

NamePositionTenureCompensationOwnership
Masamichi Koike
President1.4yrsno data0.048%
¥ 2.5m
Arihiko Bijohira
Executive VP9.2yrsno data0.099%
¥ 5.1m
Teruyo Taoka
Head of Development Division & Director6yrsno data0.061%
¥ 3.2m
6.0yrs
Average Tenure
57yo
Average Age

Experienced Management: 4583's management team is seasoned and experienced (6 years average tenure).


Board Members

NamePositionTenureCompensationOwnership
Masamichi Koike
President3.3yrsno data0.048%
¥ 2.5m
Arihiko Bijohira
Executive VP9.2yrsno data0.099%
¥ 5.1m
Teruyo Taoka
Head of Development Division & Director3.3yrsno data0.061%
¥ 3.2m
Yoshiyuki Yamakawa
Independent Outside Director6.3yrsno datano data
Akiyuki Furuya
Independent Outside Directorno datano data0.017%
¥ 897.2k
Hiroyuki Kawai
Independent Outside Director1.3yrsno datano data
Niro Sakamoto
Independent Outside Director5.3yrsno datano data
4.3yrs
Average Tenure
64yo
Average Age

Experienced Board: 4583's board of directors are considered experienced (4.3 years average tenure).


Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/06/10 09:02
End of Day Share Price 2026/06/10 00:00
Earnings2025/12/31
Annual Earnings2025/12/31

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

Chiome Bioscience Inc. is covered by 2 analysts. 0 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Akitada IwasaDaiwa Securities Co. Ltd.
Kiyokazu YamazakiIchiyoshi Research Institute Inc.