# OB1 funding: rounds and investors

> OB1 has raised $8.0M across 2 rounds since 2016. Investors include Andreessen Horowitz, Union Square Ventures and BlueYard Capital. Every round with its source.

Source: https://millionrounds.com/company/ob1 (Millionrounds; every figure on the page links to its filing or article)

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

# Who invested in *OB1*

2 rounds we have observed, with the 5 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.

Internet

Funding summary Updated 26 Oct 2026

**$8.0M** raised across 2 rounds since 2016, from 2 sources

**$3.0M** Round **$5.0M** Series A

- **Latest round:** Series A, $5.0M Mar 2018
- **Step-up i:** 1.7×
- **Investors:** 5

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.

2017 2018

**$3.0M** Round

**$5.0M** Series A

- **First round:** Round, $3.0M
- **Biggest round:** $5.0M
- **Between rounds:** 15 months

## The rounds

- **Mar 2018** Series A **$5.0M** *2 new* *3 returning* [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) [Digital Currency Group](https://millionrounds.com/fund/digital-currency-group) [BlueYard Capital](https://millionrounds.com/fund/blueyard-capital) OMERS Ventures/ Bitmain Reported by FinSMEs SEC filing: $5.2M sold, first sale Feb 2018
- **Dec 2016** Round **$3.0M** *3 new* [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) [BlueYard Capital](https://millionrounds.com/fund/blueyard-capital) Reported by FinSMEs

## 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.

**Round** 2016 **Series A** 2018 [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) [BlueYard Capital](https://millionrounds.com/fund/blueyard-capital) [Digital Currency Group](https://millionrounds.com/fund/digital-currency-group) OMERS Ventures/ Bitmain

## Everyone who backed them

[Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) VC firm **2** rounds

[Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) VC firm **2** rounds

[BlueYard Capital](https://millionrounds.com/fund/blueyard-capital) VC firm **2** rounds

[Digital Currency Group](https://millionrounds.com/fund/digital-currency-group) VC firm **1** round

OMERS Ventures/ Bitmain 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=ob1).

## Quick answers about OB1

### Who invested in OB1?

OB1's investors include Andreessen Horowitz, Union Square Ventures, BlueYard Capital, Digital Currency Group and OMERS Ventures/ Bitmain.

### How much has OB1 raised?

OB1 has raised $8.0M across 2 rounds since 2016.

### When did OB1 last raise?

OB1's most recent round was a Series A of $5.0M in Mar 2018.

### What was OB1's biggest round?

Its most recent round, $5.0M in Mar 2018, is also its largest on record.

### Who backed OB1 first?

OB1's first round on record, in Dec 2016, was backed by Andreessen Horowitz, Union Square Ventures and BlueYard Capital.

### What stage is OB1 at?

OB1's latest named round is a Series A, in Mar 2018.

### Where is OB1 based?

OB1 is based in the United States.

## Companies like OB1

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

[**Whop** $400M · Oct 2026](https://millionrounds.com/company/whop)[**Tolan** $30M · Oct 2026](https://millionrounds.com/company/tolan)[**Welltory** $4.0M · Oct 2026](https://millionrounds.com/company/welltory)[**Overtime** $33M · Oct 2026](https://millionrounds.com/company/overtime)[**1World Online** $25M · Sept 2026](https://millionrounds.com/company/1world-online)[**Luminary** $194M · Sept 2026](https://millionrounds.com/company/luminary)

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