Expertise & speed for excess & surplus insurance - a tech-enabled MGA built to delight wholesale brokers.
LEDGEBROOK - Needham, Massachusetts. The E&S insurtech pairs a next-generation tech stack with veteran underwriters; brand mark via ledgebrook.com.
Ledgebrook is a tech-enabled managing general agent in the excess and surplus (E&S) lines corner of commercial insurance - the market that covers risks too new, too large, or too unusual for standard carriers. Its pitch to the wholesale brokers who place that business is deliberately narrow: give them the fastest, easiest quoting experience in the market, without asking them to change how they work.
When a broker sends in a submission, Ledgebrook's software reads it, extracts the crucial data, instantly appends third-party information, and prefills the file so the rating process can move quickly. The company has been explicit that this happens behind the scenes - brokers don't have to do more or anything different than they already do to benefit.
The result, according to Ledgebrook and its core-platform partner Socotra, is that underwriters can quote up to five times as much business as before. But the human stays in the loop. Ledgebrook markets "data-empowered human underwriting" rather than full automation: the software clears the busywork, and experienced underwriters keep the pen on pricing and risk selection.
That combination - old-school underwriting judgment on a new-school tech stack - is the throughline of a company that went from writing its first policy in May 2023 to passing a $100 million premium run rate and closing an oversubscribed $65 million Series C by mid-2025.
Gage Caligaris took an unusual route to insurance. He studied Applied Mathematics at Harvard, then traded exotic commodity derivatives at Barclays. His insurance career began in the actuarial program at Liberty Mutual, where he became - by the company's account - the fastest person ever to pass the Casualty Actuarial Society exams.
A string of management roles culminated in Senior Director of New Mobility Products, where he helped scale a line from under $50M to more than $450M in gross written premium. In 2021 he left to build Ledgebrook, and management and employees remain the company's largest shareholders even after four funding rounds.
"Look for the industry everyone finds boring. That's usually where the leverage is."
The Ledgebrook thesis, in one lineLeadership includes John Mullen (President, E&S), Nathan Hall (CTO), Adrian Copland (COO), Ruiqi Li (Chief Product & Data Officer), Anthony Segal-Knowles (CFO), Erik Soria (Chief Reinsurance Officer & Head of Strategy) and Eric Kobrick (General Counsel).
E&S general liability for middle-market risks, quoted through the tech-enabled platform.
Excess casualty coverage sitting above primary layers for wholesale broker clients.
Primary professional liability (E&O) for a range of professional-services risks.
Professional liability for allied healthcare providers, launched with capacity partner Obsidian.
Professional liability for design professionals, led by 25-year veteran Carolyn Pearce.
Reinsurance arm letting the company retain a share of the risk it writes.
Investors across rounds include The Stephens Group (Series C lead), Duquesne, Brand Foundry Ventures, American Family Ventures, Floating Point and Hummingbird Nomads. Bar lengths are relative to round size.
Gage Caligaris starts the company to bring speed and technology to the E&S wholesale market.
Brand Foundry Ventures leads, with American Family Ventures and 15 angels, to build the quoting platform.
Ledgebrook writes its first E&S policy in May 2023 and begins scaling with wholesale brokers.
Closes $24M and $17M rounds, appoints a CFO, and launches allied healthcare and architects & engineers products with Obsidian.
Oversubscribed round led by The Stephens Group; passes a $100M premium run rate with total funding near $119M.
The E&S market has been one of the fastest-growing corners of insurance, precisely because the risks keep getting harder to standardize. That environment rewards speed and product flexibility over sheer balance-sheet size - which is the gap Ledgebrook is built to fill.
Its business model is that of a managing general agent: Ledgebrook underwrites and distributes specialty coverage on behalf of carrier capacity partners such as Obsidian, earning commission and fee income on the premium it produces, and increasingly retaining a share of risk through Ledgebrook Re. Distribution runs exclusively through wholesale brokers.
The alternatives brokers weigh are incumbent E&S carriers and traditional wholesale MGAs, alongside a newer wave of digital MGAs competing on speed-to-quote and product breadth. Ledgebrook's wager is that combining genuine underwriting expertise - a team with 100+ years of combined experience and 10+ prior product launches - with modern software is harder to copy than either piece alone.