About Sonde

Why we built Sonde

The information investors need about private companies already exists. It's just scattered across sources, inconsistent from one company to the next, and often locked inside documents that were never meant to be read at scale.

Building a reliable picture of who owns what and how it got that way takes hours you don't have, and still leaves you unsure the numbers are right. Sonde exists to fix that: to organise company information into the views investors actually want and to present it so you can trust what you're looking at, with every figure traceable back to where it came from.

We know the problem well. We spent years making investment decisions from this data ourselves.

Our principles / 01

What we're stubborn about

01 / 04

Shown the way you work

Investors don't want raw records; they want a cap table, a dilution timeline, a clear ownership picture. We do the unglamorous work of turning scattered, inconsistent data into clean, structured views so you get to the decision, not the data cleaning.

02 / 04

Trust, traceable to the source

Every figure opens back to the record it came from. Our data is sourced, not scraped or crowdsourced, and when something was read from a scanned image rather than structured data, we say so. You never have to take a number on faith.

03 / 04

Focused, not exhaustive

There are millions of companies out there; most are dormant, tiny, or will never raise. We concentrate on the venture-funded companies investors actually track, and go deep on them rather than thin on everything.

04 / 04

Honest about the edges

We're clear about what the data can show and where it stops — for example, when a company raises through an overseas parent and the UK record only tells part of the story. We'd rather flag the gap than paper over it.

Who uses Sonde / 02

Mostly investors, but not only.

VCs, angels & syndicates

The people it's built for

Investors use it most — diligencing a round and then keeping watch on it, with a current cap table, dilution to date and the shareholder list for any company we cover.

Founders

Your own position

The same structured record, turned inward — founders checking their own position and how the cap table has moved.

Advisers & corporate finance

A source behind every line

Advisers who need a verifiable ownership picture — with a filing behind every figure they put their name to.

Due diligence

Before you depend on them

Anyone doing due diligence on a company they're about to depend on — a supplier, a partner, a counterparty.

Where we come from / 03

Built in Cambridge, from a
decade of doing this ourselves.

Sonde is built and operated in Cambridge by Syndicate Room, a fund manager that has spent over a decade turning UK company data into investment decisions — and Sonde is where that work becomes a tool anyone can use.

Try it on any company we cover.
See what's been hiding in plain sight.

Start free — 3 company lookups See how it works →