# SST funding: rounds and investors

> SST has raised $1.0M across 1 round since 2021. Investors include Y Combinator, SV Angel and Greylock. Every round with its source.

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

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

# Who invested in *SST*

One round we have observed, with the 3 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.

Consumer Apps

Funding summary Updated 26 Oct 2026

**$1.0M** raised across 1 round since 2021, from 1 source

- **Latest round:** Seed, $1.0M Jul 2021
- **Investors:** 3

See who backed them

## The rounds

- **Jul 2021** Seed **$1.0M** [Y Combinator](https://millionrounds.com/fund/y-combinator) [SV Angel](https://millionrounds.com/fund/sv-angel) [Greylock](https://millionrounds.com/fund/greylock-partners) Source recorded

## Everyone who backed them

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

[SV Angel](https://millionrounds.com/fund/sv-angel) VC firm **1** round

[Greylock](https://millionrounds.com/fund/greylock-partners) VC firm **1** round

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

## Quick answers about SST

### Who invested in SST?

SST's investors include Y Combinator, SV Angel and Greylock.

### How much has SST raised?

SST has raised $1.0M across 1 round since 2021.

### When did SST last raise?

SST's most recent round was a Seed of $1.0M in Jul 2021.

### What was SST's biggest round?

Its most recent round, $1.0M in Jul 2021, is also its largest on record.

### Who backed SST first?

SST's first round on record, in Jul 2021, was backed by Y Combinator, SV Angel and Greylock.

### What stage is SST at?

SST's latest named round is a Seed, in Jul 2021.

### Where is SST based?

SST is based in the United States.

## Companies like SST

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

[**Punch** $11M · Oct 2026](https://millionrounds.com/company/punch)[**Albert** $57M · Oct 2026](https://millionrounds.com/company/albert)[**Welltory** $4.0M · Oct 2026](https://millionrounds.com/company/welltory)[**Arena** $401M · Oct 2026](https://millionrounds.com/company/arena)[**Bloom** $418M · Oct 2026](https://millionrounds.com/company/bloom)[**Clockout** $5.5M · Oct 2026](https://millionrounds.com/company/clockout)

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