Ledgebrook, a Boston-based AI-native specialty insurtech, has raised $200 million in primary equity financing co-led by Allianz X, the strategic investment arm of the Allianz Group, and Rockefeller Capital Management, with existing and new investors participating; separately, Allianz Re has agreed to a multi-year reinsurance agreement with Ledgebrook. The funds will scale Blackbird, Ledgebrook’s proprietary underwriting platform that reads submissions, classifies risk, and calculates a technical price so brokers can get quotes on hard-to-place risks in hours rather than weeks, with experienced underwriters making the final decision. The main objective is to expand Ledgebrook’s technology-led approach to complex excess and surplus (E&S) lines, including general liability, professional liability, and specialty cover for mid-sized businesses sold through wholesale brokers, as it nears $1 billion in cumulative premium written since launching in 2023; the deal also extends Allianz X’s U.S. property and casualty platform into mid-sized E&S general liability. Key players include Ledgebrook founder and CEO Gage Caligaris, Allianz X CEO Dr. Nazim Cetin, and Ledgebrook E&S president John Mullen.

Ledgebrook Raises $200M in Primary Equity Financing Co-Led by Allianz X to Scale AI-Native Specialty Insurance Platform