AccountAbility Appoints Guillaume Mascotto as Director of Advisory Services

February 5, 2026 - 05:06

AccountAbility, a leading global consulting and standards firm, has announced a key addition to its leadership team. Guillaume Mascotto has been appointed as the firm's new Director of Advisory Services, effective immediately.

Based in New York, Mascotto brings nearly two decades of extensive experience in sustainable finance, investment stewardship, and environmental, social, and governance (ESG) integration. In his new role, he will lead the advisory team in developing and delivering strategic solutions for clients worldwide. His expertise is expected to significantly enhance the firm's capacity to guide organizations in translating sustainability commitments into measurable performance and long-term value creation.

Mascotto's prior background includes prominent positions within the asset management industry, where he focused on ESG research, policy development, and client advisory. This deep industry knowledge positions him to address the complex challenges businesses face in today's rapidly evolving regulatory and stakeholder landscape.

The appointment signals AccountAbility's continued commitment to expanding its thought leadership and practical support for companies navigating the transition to a sustainable economy. Mascotto's leadership will be instrumental in helping clients build resilience, manage risk, and implement robust sustainability frameworks across their operations.