# MainStem funding: rounds and investors

> MainStem has raised $7.2M across 2 rounds since 2018. Investors include Merida Capital Partners/ Poseidon Asset Management. Every round with its source.

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

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

# Who invested in *MainStem*

2 rounds we have observed, with the one investor 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.

Cannabis

Funding summary Updated 26 Oct 2026

**$7.2M** raised across 2 rounds since 2018, from 2 sources

**$2.2M** Series B **$5.0M** Series C

- **Latest round:** Series C, $5.0M Aug 2021
- **Step-up i:** 2.3×
- **Investors:** 1

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

**$2.2M** Series B

**$5.0M** Series C

- **First round:** Series B, $2.2M
- **Biggest round:** $5.0M
- **Between rounds:** 3.2 years

## The rounds

- **Aug 2021** Series C **$5.0M** No investor was named in the report. Source recorded SEC filing: $5.0M sold, first sale Sept 2021
- **May 2018** Series B **$2.2M** *1 new* Merida Capital Partners/ Poseidon Asset Management Reported by FinSMEs SEC filing: $2.0M sold, first sale Jul 2018

## Everyone who backed them

Merida Capital Partners/ Poseidon Asset Management 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=mainstem).

## Quick answers about MainStem

### Who invested in MainStem?

MainStem's investors include Merida Capital Partners/ Poseidon Asset Management.

### How much has MainStem raised?

MainStem has raised $7.2M across 2 rounds since 2018.

### When did MainStem last raise?

MainStem's most recent round was a Series C of $5.0M in Aug 2021.

### What was MainStem's biggest round?

Its most recent round, $5.0M in Aug 2021, is also its largest on record.

### Who backed MainStem first?

MainStem's first round on record, in May 2018, was backed by Merida Capital Partners/ Poseidon Asset Management.

### What stage is MainStem at?

MainStem's latest named round is a Series C, in Aug 2021.

### Where is MainStem based?

MainStem is based in the United States.

## Companies like MainStem

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

[**Cresco Labs** $150M · Jun 2026](https://millionrounds.com/company/cresco-labs)[**Parallel** $146M · Jun 2026](https://millionrounds.com/company/parallel)[**Pax** $480M · May 2026](https://millionrounds.com/company/pax)[**Natuur Brands** $290K · Apr 2026](https://millionrounds.com/company/natuur-brands)[**Nabis** $10M · Jan 2026](https://millionrounds.com/company/nabis)[**Flora Growth Corp.** $401M · Sept 2025](https://millionrounds.com/company/flora-growth-corp)

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