At a Glance
| Detail | Thirdfort | Winnow |
|---|---|---|
| Category | Compliance & Privacy | Compliance & Privacy |
| Total raised | $23.6M | Not disclosed |
| Rounds tracked | 4 | Not disclosed |
| Latest round | Series A, $19.7M · Mar 2022 | Not disclosed |
| Last valuation | Not disclosed | Not disclosed |
| Lead investors | Breega, Alex Chesterman | Not disclosed |
| Built for | Not disclosed | Not disclosed |
| Headquarters | United Kingdom | US |
Funding, Side by Side
Thirdfort rounds
- Mar 2022Series A$19.7M
- Apr 2021Undisclosed$2.1M
- Aug 2020Seed-plus$1.3M
- Oct 2018Pre-Seed$522K
Winnow rounds
No public rounds tracked yet.
Our Take
We have not tested these two head to head yet. The numbers above come from public funding announcements. If you use either one, tell us what you found and it may become a Field Note.
Quick Answers
- Which has raised more, Thirdfort or Winnow?
- Thirdfort has raised $23.6M in disclosed funding, compared with no disclosed amount for Winnow.
- What is Thirdfort best for?
- Client ID and AML checks for law firms.
- What is Winnow best for?
- Automated regulatory change management.
Source: Legal Tech Circle funding data, from public announcements. Updated November 11, 2026.