Maybern

A system of record for money that hates being recorded

Maybern is a New York fintech that builds what it calls the operating system for private fund finance. In plain terms: it takes the financial and operational guts of a private fund - capital calls, distributions, management fees, carried interest, the dreaded waterfall - and puts them on one platform that calculates, tracks, and reports them automatically. The company calls the result a "Performance Book of Record." Accountants call it a relief.

Today that platform sits underneath more than $80 billion in assets across 150-plus fund vehicles. In November 2025 it raised a $50 million Series B led by Battery Ventures, bringing total funding to $76 million. For a company that sells software to people whose idea of excitement is a reconciled ledger, that is a remarkable amount of attention.

The CFO's office, held together with formulas

Private funds are complicated by design. Every limited partner can negotiate different terms. Fees step down. Profits split across tiers that only trigger after a hurdle rate. None of this fits neatly into the accounting software built for ordinary companies, so the industry did what resourceful people do: it built the whole thing in Excel.

That works at one fund. It strains at five. At a firm running dozens of vehicles, the spreadsheet becomes a liability with its own personality - fragile, undocumented, and quietly authoritative. A single broken cell reference can mistate what an investor is owed. Audits drag. Reporting takes weeks. And the people who understand the model are exactly the people you cannot afford to lose.

Maybern's founders had watched this up close. The bet was simple to state and hard to execute: replace the black box with a glass box - software that handles the complexity instead of hiding it, and shows its work.

Engineers who'd seen the spreadsheet from the inside

Maybern was founded in 2021 by Ross Mechanic and Ashwin Raghu, who had worked together at the real estate investment platform Cadre - Mechanic as an engineer, Raghu as CTO. They had felt the pain of fund operations from the technology side, where the gap between what investors needed and what the tooling could deliver was widest. John Bowman rounds out the founding team on the business side.

Their conviction was that fund finance was not too messy for software - it was simply waiting for software willing to take the mess seriously. So they built the product the unfashionable way: in partnership with seven institutional fund managers running between $2 billion and $250 billion each. Not a demo built in a vacuum. A tool stress-tested against the structures that break ordinary systems.

What it actually does at 11pm before a close

The platform is modular, but it rotates around one promise: the numbers are right, and you can see why. Capital calls and distributions are generated, not hand-built. Waterfall tiers are configured once and applied consistently. Fees calculate themselves. LP reporting comes out the other end without a fire drill.

Who's trusting Maybern with their numbers

The client roster reads like a cross-section of private capital: Madison Realty Capital, Gauge Capital, Town Lane, and Derby Lane Partners among them, spanning private equity, real estate, and credit. The Series B was led by Battery Ventures, with Primary Venture Partners, Human Capital, MetaProp, Grafton Street Partners, Camber Creek, and Friends & Family Capital following on.

The board addition is its own signal. Marcus Ryu co-founded Guidewire Software and took it public on the NYSE - a man who knows what it looks like to build unglamorous, mission-critical software for a conservative industry and win. He does not join boards for fun.

Make complexity legible

Maybern's stated mission is to build the operating system for modern fund finance - one platform where even the most baroque fund structure can be managed with precision and transparency. The company's values are refreshingly literal for fintech: tackle complexity first, build in partnership, and never ship a black box. The fresh capital goes toward R&D and AI-driven tooling that pushes further into scenario modeling, decision support, and automated operations - the work that comes after the spreadsheet is gone.

The plumbing decides who scales

Private capital is heading from $16 trillion to a projected $32 trillion by 2030. That much money cannot keep being administered by files only one person understands. The firms that scale will be the ones whose infrastructure scales with them - and infrastructure, unlike returns, is something you can choose to fix in advance.

So picture that Manhattan controller again, the one closing the quarter with the spreadsheet nobody fully trusts. On Maybern, the waterfall is configured, the calls are generated, the report is one click, and the audit trail explains itself. The quarter closes on time. Nobody emails a renamed file. The most dangerous document in finance has been replaced by a system that shows its work - and the controller, for once, goes home.