Idemitsu Kosan Co.,Ltd.
5019・Prime Market・Oil & Coal Products
Governance
The company is a company with a board of auditors, and has established a voluntary nomination and compensation advisory committee (composed solely of independent outside directors). The board of directors meets 15 times a year, and outside officer meetings are held 6 times a year, reflecting continuous efforts to improve effectiveness.
Risk Management
The company operates Enterprise Risk Management (ERM) centered on the Risk Management Committee and the Risk & Compliance Committee, both chaired by the President. Sustainability-related risks are incorporated into ERM, and are managed centrally through materiality assessments, annual updates of risk reports, and independent oversight by the Internal Audit Department.
Shareholder Returns
For FY2026 (ending March 2026), the annual dividend is ¥36 per share (interim ¥18, year-end ¥18), with total dividends of ¥44,084 million and a payout ratio of 25.6%. For FY2027 (ending March 2027), a progressive dividend policy will be introduced with an annual dividend floor of ¥36, and the company plans to continue a total shareholder return ratio of 50% or more against net income excluding inventory valuation effects.
Dividend Policy
For FY2026 (ending March 2026), the annual dividend is ¥36 per share (interim ¥18, year-end ¥18), with total dividends of ¥44,084 million and a payout ratio of 25.6%. The forecast for FY2027 (ending March 2027) is also an annual dividend of ¥36. Based on the medium-term management plan (FY2026-FY2030), a progressive dividend policy will be introduced from FY2026 with an annual dividend floor of ¥36, adjusted according to performance. The company plans to continue a total shareholder return ratio of 50% or more against net income excluding inventory valuation effects for FY2026 through FY2030.
ESG
CO₂ emissions (Scope 1+2) for FY2025 totaled 12,824 thousand t-CO₂ (▲19.2% versus 2013). The company is advancing the commercialization of low/decarbonization solutions such as SAF, biofuels, Lithium Solid Electrolyte, and chemical recycling, while also focusing on human capital management, including the establishment of a DE&I Promotion Committee, a target of 10% female managers (by 2030), and a 98% male childcare leave uptake rate.
Last updated: June 17, 2026