This study investigates the effects of stakeholder relations quality, and the social and moral capital of CEOs on the board processes and performance of socially and environmentally responsible companies. Data is collected from 40 companies listed on the Sri-Kehati Index of the Indonesia Stock Exchange and evaluated under the PROPER program by the Ministry of Environment Indonesia. Using GeSCA for analysis, results show that CEO’s relational and moral capital significantly impact board processes and performance. The quality of stakeholder relationships is more pronounced at the individual CEO level than the company level. Further analysis indicates that CEO’s relational capital strengthens the relationship between their moral capital and stakeholder relationship quality at the company level. Additionally, while the CEO’s relational capital significantly affects both board processes and performance, the CEO’s moral capital and the company’s responsible status only significantly impact board performance. Mediation analysis reveals that the CEO’s relational capital significantly mediates the relationship between the CEO’s moral capital and the company’s responsible status, affecting board processes. The findings underscore the importance of CEO’s relational capital at both individual and company levels for socially and environmentally responsible companies.