# Proof Diagnostics funding: rounds and investors

> Proof Diagnostics has raised $45M across 1 round since 2022. Investors include SV Angel, Madrona Venture Group and ARCH Venture Partners.

Source: https://millionrounds.com/company/proof-diagnostics (Millionrounds; every figure on the page links to its filing or article)

United States · [Series A startup](https://millionrounds.com/companies)

# Who invested in *Proof Diagnostics*

One round we have observed, with the 3 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Consumer Apps

Funding summary Updated 26 Oct 2026

**$45M** raised across 1 round since 2022, from 1 source

- **Latest round:** Series A, $45M Apr 2022
- **Investors:** 3

See who backed them

## The rounds

- **Apr 2022** Series A **$45M** [SV Angel](https://millionrounds.com/fund/sv-angel) [Madrona Venture Group](https://millionrounds.com/fund/madrona) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) Source recorded

## Everyone who backed them

[SV Angel](https://millionrounds.com/fund/sv-angel) VC firm **1** round

[Madrona Venture Group](https://millionrounds.com/fund/madrona) VC firm **1** round

[ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) VC firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=proof-diagnostics).

## Quick answers about Proof Diagnostics

### Who invested in Proof Diagnostics?

Proof Diagnostics's investors include SV Angel, Madrona Venture Group and ARCH Venture Partners.

### How much has Proof Diagnostics raised?

Proof Diagnostics has raised $45M across 1 round since 2022.

### When did Proof Diagnostics last raise?

Proof Diagnostics's most recent round was a Series A of $45M in Apr 2022.

### What was Proof Diagnostics's biggest round?

Its most recent round, $45M in Apr 2022, is also its largest on record.

### Who backed Proof Diagnostics first?

Proof Diagnostics's first round on record, in Apr 2022, was backed by SV Angel, Madrona Venture Group and ARCH Venture Partners.

### What stage is Proof Diagnostics at?

Proof Diagnostics's latest named round is a Series A, in Apr 2022.

### Where is Proof Diagnostics based?

Proof Diagnostics is based in the United States.

## Companies like Proof Diagnostics

In the same sector, and raised in the last eighteen months.

[**Punch** $11M · Oct 2026](https://millionrounds.com/company/punch)[**Albert** $57M · Oct 2026](https://millionrounds.com/company/albert)[**Welltory** $4.0M · Oct 2026](https://millionrounds.com/company/welltory)[**Arena** $401M · Oct 2026](https://millionrounds.com/company/arena)[**Bloom** $418M · Oct 2026](https://millionrounds.com/company/bloom)[**Clockout** $5.5M · Oct 2026](https://millionrounds.com/company/clockout)

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