# Gemstone Biotherapeutics funding: rounds and investors

> Gemstone Biotherapeutics has raised $2.7M across 2 rounds since 2015. Investors include National Science Foundation and Gamma3. Every round with its source.

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

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

# Who invested in *Gemstone Biotherapeutics*

2 rounds we have observed, with the 2 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.

Advanced Manufacturing

Funding summary Updated 26 Oct 2026

**$2.7M** raised across 2 rounds since 2015, from 2 sources

**$2.5M** Seed **$250K** Venture

- **Latest round:** Venture, $250K Aug 2019
- **Biggest round:** $2.5M Seed · Jun 2015
- **Investors:** 2

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.

2016 2017 2018 2019

**$2.5M** Seed

**$250K** Venture

- **First round:** Seed, $2.5M
- **Biggest round:** $2.5M
- **Between rounds:** 4.2 years

## The rounds

- **Aug 2019** Venture **$250K** *1 new* [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Source recorded
- **Jun 2015** Seed **$2.5M** *1 new* [Gamma3](https://millionrounds.com/fund/gamma3) From a historical funding record SEC filing: $1.6M sold, first sale Jun 2015

## Founders and team

From the SEC filings it signed: 2 on the team.

- **David Oros** Director, Promoter i
- **George Davis** Executive Officer, Director, Promoter i

On the board, as filed i *Geoff Mackay* *Xin Huang*

## 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.

**Seed** 2015 **Venture** 2019 [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Gamma3](https://millionrounds.com/fund/gamma3)

## Everyone who backed them

[National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government **1** round

[Gamma3](https://millionrounds.com/fund/gamma3) VC firm **1** round

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

## Quick answers about Gemstone Biotherapeutics

### Who invested in Gemstone Biotherapeutics?

Gemstone Biotherapeutics's investors include National Science Foundation and Gamma3.

### How much has Gemstone Biotherapeutics raised?

Gemstone Biotherapeutics has raised $2.7M across 2 rounds since 2015.

### When did Gemstone Biotherapeutics last raise?

Gemstone Biotherapeutics's most recent round was a Venture of $250K in Aug 2019.

### What was Gemstone Biotherapeutics's biggest round?

Gemstone Biotherapeutics's largest round on record is $2.5M (Seed), in Jun 2015.

### Who backed Gemstone Biotherapeutics first?

Gemstone Biotherapeutics's first round on record, in Jun 2015, was backed by Gamma3.

### What stage is Gemstone Biotherapeutics at?

Gemstone Biotherapeutics's latest named round is a Venture, in Aug 2019.

### Where is Gemstone Biotherapeutics based?

Gemstone Biotherapeutics is based in the United States.

## Companies like Gemstone Biotherapeutics

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

[**Ultrasonium** Sept 2026](https://millionrounds.com/company/ultrasonium)[**BILT** $272M · Sept 2026](https://millionrounds.com/company/bilt)[**HopFlyt** $2.0M · Sept 2026](https://millionrounds.com/company/hopflyt)[**FluidForm Bio** $1.7M · Aug 2026](https://millionrounds.com/company/fluidform-bio)[**unspun** $42M · Aug 2026](https://millionrounds.com/company/unspun)[**Vntana** $5.3M · Jul 2026](https://millionrounds.com/company/vntana)

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