# Sunflower funding: rounds and investors

> Sunflower has raised $1.5M across 1 round since 2025. Investors include Y Combinator, Alumni Ventures and Flybridge. Every round with its source.

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

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

# Who invested in *Sunflower*

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Mental Health

Funding summary Updated 26 Oct 2026

**$1.5M** raised across 1 round since 2025, from 1 source

- **Latest round:** Seed, $1.5M Oct 2025
- **Investors:** 4

See who backed them

## The rounds

- **Oct 2025** Seed **$1.5M** [Y Combinator](https://millionrounds.com/fund/y-combinator) [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Flybridge](https://millionrounds.com/fund/flybridge) [Rebel Fund](https://millionrounds.com/fund/rebel-fund) Source recorded

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

[Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **1** round

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

[Rebel Fund](https://millionrounds.com/fund/rebel-fund) VC firm **1** round

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

## Also claim to have backed them

This firm lists Sunflower as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Thomson Reuters Ventures](https://millionrounds.com/fund/thomson-reuters-ventures-2) Corporate VC Per its own site

## Quick answers about Sunflower

### Who invested in Sunflower?

Sunflower's investors include Y Combinator, Alumni Ventures, Flybridge and Rebel Fund.

### How much has Sunflower raised?

Sunflower has raised $1.5M across 1 round since 2025.

### When did Sunflower last raise?

Sunflower's most recent round was a Seed of $1.5M in Oct 2025.

### What was Sunflower's biggest round?

Its most recent round, $1.5M in Oct 2025, is also its largest on record.

### Who backed Sunflower first?

Sunflower's first round on record, in Oct 2025, was backed by Y Combinator, Alumni Ventures and Flybridge and 1 others.

### What stage is Sunflower at?

Sunflower's latest named round is a Seed, in Oct 2025.

### Where is Sunflower based?

Sunflower is based in the United States.

## Companies like Sunflower

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

[**Tolan** $30M · Oct 2026](https://millionrounds.com/company/tolan)[**Allswell** $15M · Oct 2026](https://millionrounds.com/company/allswell)[**Handspring Health** $31M · Jul 2026](https://millionrounds.com/company/handspring-health)[**Antelope Recovery** $380K · Jul 2026](https://millionrounds.com/company/antelope-recovery)[**Ember Health** $250K · Jun 2026](https://millionrounds.com/company/ember-health)[**Adial Pharmaceuticals** $43M · Jun 2026](https://millionrounds.com/company/adial-pharmaceuticals)

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