The growing expectations of stakeholders have prompted companies to move towards more inclusive information disclosure. This shift involves altering traditional disclosure practices and moving beyond compliance with existing requirements. By adopting a corporate citizenship approach, companies can address broader information needs, which may contribute to sustainable development. This study aims to develop a framework for sustainable corporate citizenship reporting and assess the impact of more comprehensive information disclosure in capital market companies. The study employs a unique combination of qualitative and quantitative methodologies. The qualitative findings, based on 14 expert interviews, revealed 287 primary open codes, 3 categories, 8 elements, and 42 propositional themes related to the development of sustainable corporate citizenship reporting, which were organized into a theoretical framework. The quantitative results indicated that, according to the total matrix scores, the human resources promotion disclosure component, "T2," is deemed the most critical for enhancing corporate citizenship reporting in capital market companies, potentially leading to increased stability.