<p>This study examines how Circular Information Sharing (CIS) advances circular-economy performance in global manufacturing, emphasizing its relevance for environmental governance and policy-driven supply-chain transitions. By improving transparency, traceability, and visibility across material flows, CIS strengthens Circular Supply Chain Management (CSCM) and supports firm-level alignment with emerging regulations on resource efficiency, responsible sourcing, and verifiable sustainability reporting. Drawing on Stakeholder Theory and the Resource-Based View, the research develops and empirically tests a structural model using data from manufacturing firms operating in global value chains. The findings show that CIS provides the informational infrastructure needed to implement circular practices, enhance operational responsiveness, and adopt Augmented Supply Chain Workforce Solutions (ASCWS) such as AI-assisted decision systems and real-time analytics. Responsible Marketing (RM) mediates these effects by converting CIS-derived insights into credible sustainability communication, increasing organizational legitimacy among regulators, supply-chain partners, and civil-society stakeholders. This legitimacy facilitates broader acceptance of digitally enabled workforce transformation. Overall, the study highlights data-driven transparency as a strategic and policy-relevant mechanism for advancing circular-economy transitions. It positions CIS as a critical resource that supports circular business models, environmentally responsible digitalization, and trustworthy sustainability communication, offering guidance for managers, policymakers, and researchers.</p>