# Day Zero Diagnostics funding: rounds and investors

> Day Zero Diagnostics has raised $25M across 2 rounds since 2019. Investors include MassChallenge, Sands Capital Ventures and Triventures.

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

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

# Who invested in *Day Zero Diagnostics*

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

Biotech Healthcare

Funding summary Updated 26 Oct 2026

**$25M** raised across 2 rounds since 2019, from 2 sources

**$8.6M** Series A **$16M** Venture

- **Latest round:** Venture, $16M Sept 2023
- **Step-up i:** 1.9×
- **Investors:** 3

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2019 2020 2021 2022 2023

**$8.6M** Series A

**$16M** Venture

- **First round:** Series A, $8.6M
- **Biggest round:** $16M
- **Between rounds:** 4.6 years

## The rounds

- **Sept 2023** Venture **$16M** *2 new* [MassChallenge](https://millionrounds.com/fund/masschallenge) [Sands Capital Ventures](https://millionrounds.com/fund/sands-capital-ventures) Source recorded
- **Jan 2019** Series A **$8.6M** *1 new* Triventures Reported by Americaninno

## Founders and team

From the SEC filings it signed: 3 on the team.

- **Dougal Mclaurin** Executive Officer i
- **Jong Lee** Executive Officer, Director i
- **Miriam Huntley** Executive Officer i

On the board, as filed i *Douglas Kwon* *Jeff Mirviss* *Laura Davis*

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Series A** 2019 **Venture** 2023 [MassChallenge](https://millionrounds.com/fund/masschallenge) [Sands Capital Ventures](https://millionrounds.com/fund/sands-capital-ventures) Triventures

## Everyone who backed them

[MassChallenge](https://millionrounds.com/fund/masschallenge) Accelerator **1** round

[Sands Capital Ventures](https://millionrounds.com/fund/sands-capital-ventures) Private equity **1** round

Triventures no record of our own yet **1** round

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

## Quick answers about Day Zero Diagnostics

### Who invested in Day Zero Diagnostics?

Day Zero Diagnostics's investors include MassChallenge, Sands Capital Ventures and Triventures.

### How much has Day Zero Diagnostics raised?

Day Zero Diagnostics has raised $25M across 2 rounds since 2019.

### When did Day Zero Diagnostics last raise?

Day Zero Diagnostics's most recent round was a Venture of $16M in Sept 2023.

### What was Day Zero Diagnostics's biggest round?

Its most recent round, $16M in Sept 2023, is also its largest on record.

### Who backed Day Zero Diagnostics first?

Day Zero Diagnostics's first round on record, in Jan 2019, was backed by Triventures.

### What stage is Day Zero Diagnostics at?

Day Zero Diagnostics's latest named round is a Venture, in Sept 2023.

### Where is Day Zero Diagnostics based?

Day Zero Diagnostics is based in the United States.

## Companies like Day Zero Diagnostics

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

[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)

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