Most Corporate Social Responsibility (CSR) implementations in Indonesia remain confined to short-term philanthropic activities, failing to comprehensively integrate Islamic ethical values. This study examines the implementation of sustainable CSR through the SAKA Bakti Pesantren program, utilizing a Maqasid al-Shari’ah framework to evaluate its social, economic, and educational empowerment outcomes within Islamic boarding school (pesantren) environments. Employing a qualitative descriptive method, data were gathered through in-depth interviews, participant observation, and documentation of the CSR initiative executed by PGN Saka in Gresik Regency, East Java. The findings reveal that the SAKA Bakti Pesantren program successfully operationalizes the five core pillars of Maqasid al-Shari’ah: safeguarding faith (hifz al-din), life (hifz al-nafs), intellect (hifz al-‘aql), lineage (hifz al-nasl), and wealth (hifz al-mal). The initiative systematically enhances human resource capacity through skills training and professional certifications while fostering institutional economic independence via sustainable cooperative development. This study underscores that embedding Maqasid al-Shari’ah into CSR models establishes long-term social welfare (maslahah), reinforces corporate social legitimacy, and offers a distinct Islamic economic framework that contributes significantly to the United Nations' Sustainable Development Goals (SDGs).