Weastem

Weastem is a finance & strategy firm for the New Climate Era. We support financial institutions, asset managers, private equity firms, and corporates across Europe to navigate systemic risks, climate disruption, and emerging sustainability mandates. Founded in 2025 in Paris, we are a growing ecosystem of 20+ professionals located at the intersection of strategy, finance, and sustainability. We hold one conviction: finance must shift from being a lever of extraction to a force of transformation rooted in long-term value, resilience, and responsibility.