Mirova appoints Léa Dunand‑Chatellet as CEO, signalling internal succession at Europe's leading sustainable investment house

Mirova, the sustainable investment subsidiary of Natixis Investment Managers, has appointed Léa Dunand-Chatellet as its new chief executive, replacing founding CEO Philippe Zaouati. The appointment, reported by ESG Today, promotes an internal executive with more than 20 years in sustainable investing and more than a decade at Natixis. Dunand-Chatellet most recently served as Head of Responsible Investment and ESG Portfolio Manager at DNCA Finance, a Natixis affiliate, and previously led equity management at Mirova itself.

Dunand-Chatellet brings a regulatory as well as investment background to the role. She sits on the AMF's Climate and Sustainable Finance Commission, chairs the AFG's Responsible Investment Commission, and serves on the French Ministry of the Economy's ISR Label Committee, the body that oversees France's official responsible investment certification scheme. That combination of portfolio management experience and institutional involvement in setting sustainable finance standards positions the incoming CEO as someone embedded in the architecture of French and European sustainable finance policy, not simply a fund manager.

Natixis Investment Managers CEO Philippe Setbon described the appointment as promoting a talented internal executive, signalling that the succession was planned rather than reactive. Mirova was established in 2014 and has built a reputation as one of Europe's most credible dedicated sustainable investment houses, managing assets across listed equities, green bonds, infrastructure, and impact funds. The choice of an internal candidate with deep ESG methodology experience over a commercially focused external hire suggests the firm intends to maintain its emphasis on rigorous sustainability integration rather than broadening into more mainstream mandates.

For asset owners and ESG teams that track which investment managers apply the most substantive sustainability criteria, leadership transitions at firms like Mirova carry real weight. The incoming CEO's profile, rooted in ESG methodology and regulatory engagement, signals that Mirova's approach to portfolio construction and engagement with investee companies is unlikely to shift toward softer sustainability standards. In a period when greenwashing scrutiny from ESMA and national regulators remains elevated, continuity of rigorous methodology at a prominent impact investor is a meaningful market signal.

The appointment reflects a broader pattern in European sustainable finance: firms that built their market position on genuine ESG integration are now reaching succession moments, and leadership choices signal whether that positioning will hold. As SFDR Article 9 funds face ongoing scrutiny and CSRD disclosure requirements raise the bar for corporate sustainability claims, the institutions that allocate capital based on those disclosures matter directly to sustainability managers and CFOs. ESG practitioners should watch how Mirova's investment strategy evolves under new leadership, particularly in how it engages with corporate sustainability teams on material climate and nature disclosures.