# y prime funding: rounds and investors

> y prime has raised $13M across 3 rounds since 2013. Investors include Square 1 Bank and Ballast Point Ventures. Every round with its source.

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

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

# Who invested in *y prime*

3 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.

Biotech Healthcare

Funding summary Updated 26 Oct 2026

**$13M** raised across 3 rounds since 2013, from 3 sources

**$5.0M** Series A **$2.5M** Venture **$5.0M** Round

- **Latest round:** Round, $5.0M Jun 2016
- **Step-up i:** 2×
- **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.

2014 2015 2016

**$5.0M** Series A

**$2.5M** Venture

**$5.0M** Round

- **First round:** Series A, $5.0M
- **Biggest round:** $5.0M
- **Usual gap between rounds:** 20 months

## The rounds

- **Jun 2016** Round **$5.0M** *1 new* [Square 1 Bank](https://millionrounds.com/fund/square-1-bank) Reported by FinSMEs
- **Oct 2014** Venture **$2.5M** No investor was named in the report. From a historical funding record SEC filing: $2.5M sold, first sale Sept 2014
- **Sept 2013** Series A **$5.0M** *1 new* [Ballast Point Ventures](https://millionrounds.com/fund/ballast-point-ventures) Reported by finsmes.com SEC filing: $5.0M sold, first sale Aug 2013

## 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** 2013 **Venture** 2014 **Round** 2016 [Square 1 Bank](https://millionrounds.com/fund/square-1-bank) [Ballast Point Ventures](https://millionrounds.com/fund/ballast-point-ventures)

## Everyone who backed them

[Square 1 Bank](https://millionrounds.com/fund/square-1-bank) Investment firm **1** round

[Ballast Point Ventures](https://millionrounds.com/fund/ballast-point-ventures) Private equity **1** round

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

## Also claim to have backed them

These 2 firms list y prime as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

[Flexpoint Ford](https://millionrounds.com/fund/flexpoint-ford) Private equity Per its own site

[Ballast Point Partners](https://millionrounds.com/fund/ballast-point-partners) Growth equity Per its own site

## Quick answers about y prime

### Who invested in y prime?

y prime's investors include Square 1 Bank and Ballast Point Ventures.

### How much has y prime raised?

y prime has raised $13M across 3 rounds since 2013.

### When did y prime last raise?

y prime's most recent round was an Undisclosed round of $5.0M in Jun 2016.

### What was y prime's biggest round?

Its most recent round, $5.0M in Jun 2016, is also its largest on record.

### Who backed y prime first?

y prime's first round on record, in Sept 2013, was backed by Ballast Point Ventures.

### What stage is y prime at?

y prime's latest named round is an Undisclosed round, in Jun 2016.

### Where is y prime based?

y prime is based in the United States.

## Companies like y prime

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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