Aventum Group has acquired Post & Co to establish a foothold in continental Europe and deepen its marine insurance capabilities.
The deal gives Aventum immediate access to key European markets, accelerating its regional expansion strategy without building operations from scratch. It also reflects a targeted approach to growth, focusing on specialist capabilities rather than scale alone.
Aventum operates internationally across specialty insurance lines, with an established presence in the UK, North America and Asia. The group has been expanding through selective acquisitions that add underwriting expertise and distribution strength.
Post & Co brings more than a century of marine underwriting experience, operating from Rotterdam, Groningen, Antwerp and Frankfurt. Its network of around 250 brokers across Europe and Asia adds both reach and established market relationships.
Marine is already a core class for Aventum, and the acquisition strengthens its global proposition by adding underwriting authority, claims expertise and broker connectivity. The move also creates a platform for future expansion into other specialty lines within Europe.
Post & Co will join Aventum’s MGA platform under Rokstone, continuing to operate with its existing leadership and structure. The focus is on maintaining continuity while integrating capabilities across the wider group.
The transaction highlights Aventum’s strategy of disciplined, capability-led growth, using acquisitions to build a more connected international insurance platform.
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