# LightSource funding: rounds and investors

> LightSource has raised $33M across 1 round since 2025. Investors include Lightspeed Venture Partners, Bain Capital Ventures and Pareto Holdings.

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

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

# Who invested in *LightSource*

One round we have observed, with the 5 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.

AI

Funding summary Updated 26 Oct 2026

**$33M** raised across 1 round since 2025, from 1 source

- **Latest round:** Series A, $33M Mar 2025
- **Investors:** 5

See who backed them

## The rounds

- **Mar 2025** Series A **$33M** [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) [Pareto Holdings](https://millionrounds.com/fund/pareto-holdings) [Pillar VC](https://millionrounds.com/fund/pillar-vc) [J2 Ventures](https://millionrounds.com/fund/j2-ventures) Source recorded

## Everyone who backed them

[Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) VC firm **1** round

[Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) VC firm **1** round

[Pareto Holdings](https://millionrounds.com/fund/pareto-holdings) VC firm **1** round

[Pillar VC](https://millionrounds.com/fund/pillar-vc) VC firm **1** round

[J2 Ventures](https://millionrounds.com/fund/j2-ventures) VC firm **1** round

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

## Quick answers about LightSource

### Who invested in LightSource?

LightSource's investors include Lightspeed Venture Partners, Bain Capital Ventures, Pareto Holdings, Pillar VC and J2 Ventures.

### How much has LightSource raised?

LightSource has raised $33M across 1 round since 2025.

### When did LightSource last raise?

LightSource's most recent round was a Series A of $33M in Mar 2025.

### What was LightSource's biggest round?

Its most recent round, $33M in Mar 2025, is also its largest on record.

### Who backed LightSource first?

LightSource's first round on record, in Mar 2025, was backed by Lightspeed Venture Partners, Bain Capital Ventures and Pareto Holdings and 2 others.

### What stage is LightSource at?

LightSource's latest named round is a Series A, in Mar 2025.

### Where is LightSource based?

LightSource is based in the United States.

## Companies like LightSource

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

[**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Albert Invent** $20M · Oct 2026](https://millionrounds.com/company/albert-invent)[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Pika** $216M · Oct 2026](https://millionrounds.com/company/pika)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor)

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