Hiroshi Kiriyama

Chairman at COSMO ENERGY HOLDINGS CO., LTD.

Net worth: 5 M $ as of 2026-09-29

71 year

40 connections

Energy Minerals

Distribution Services

Process Industries

Profile

Hiroshi Kiriyama is Chairman at Cosmo Energy Holdings Co., Ltd. since 2023 and Director at COSMO Energy Exploration & Development Co., Ltd. Currently.
Formerly, Director & Managing Executive Officer at Cosmo Oil KK from 2013 to 2015 and Director at Maruzen Petrochemical Co., Ltd.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
COSMO ENERGY HOLDINGS CO., LTD. 0.11%	2026-06-23	175,900 ( 0.11% )	5 M $	2026-09-29

Hiroshi Kiriyama active positions

Companies	Position	Start
COSMO ENERGY HOLDINGS CO., LTD.	Chairman	2023-03-31
COSMO Energy Exploration & Development Co., Ltd. COSMO Energy Exploration & Development Co., Ltd. Oil Refining/MarketingEnergy Minerals Develops crude oil	Director/Board Member	-

All active positions of Hiroshi Kiriyama

Former positions of Hiroshi Kiriyama

Companies	Position	End
COSMO OIL CO LTD	Director/Board Member	2015-09-30
Maruzen Petrochemical Co., Ltd. Maruzen Petrochemical Co., Ltd. Chemicals: SpecialtyProcess Industries Develops, produces and sells petrochemical products	Director/Board Member	-

See the detail of Hiroshi Kiriyama's experience

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Hiroshi Kiriyama's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	4
Cosmo Oil KK Cosmo Oil KK Wholesale DistributorsDistribution Services Specializes in importing, exporting, refining, storage and sale of crude oil & petroleum products	Distribution Services
Maruzen Petrochemical Co., Ltd. Maruzen Petrochemical Co., Ltd. Chemicals: SpecialtyProcess Industries Develops, produces and sells petrochemical products	Process Industries
COSMO Energy Exploration & Development Co., Ltd. COSMO Energy Exploration & Development Co., Ltd. Oil Refining/MarketingEnergy Minerals Develops crude oil	Energy Minerals
Cosmo Energy Holdings Co., Ltd. Cosmo Energy Holdings Co., Ltd. Oil Refining/MarketingEnergy Minerals Operates as a holding company	Energy Minerals