# Fathom funding: rounds and investors > Fathom has raised $63M across 2 rounds since 2022. Investors include Y Combinator, Lightspeed Venture Partners and Founders Fund. Every round with its source. Source: https://millionrounds.com/company/fathom (Millionrounds; every figure on the page links to its filing or article) United States · [Series A startup](https://millionrounds.com/companies) # Who invested in *Fathom* 2 rounds we have observed, with the 8 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. AI Funding summary Updated 26 Oct 2026 **$63M** raised across 2 rounds since 2022, from 2 sources **$46M** Series B **$17M** Series A - **Latest round:** Series A, $17M Sept 2024 - **Biggest round:** $46M Series B · Nov 2022 - **Investors:** 8 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. 2023 2024 **$46M** Series B **$17M** Series A - **First round:** Series B, $46M - **Biggest round:** $46M - **Between rounds:** 22 months ## The rounds - **Sept 2024** Series A **$17M** *4 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) [Quiet Capital](https://millionrounds.com/fund/quiet-capital) [Active Capital](https://millionrounds.com/fund/active-capital) Source recorded - **Nov 2022** Series B **$46M** *4 new* [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) [Founders Fund](https://millionrounds.com/fund/founders-fund) [Google Ventures](https://millionrounds.com/fund/gv) [Apollo](https://millionrounds.com/fund/apollo-global-management) Source recorded SEC filing: $46M sold, first sale Nov 2022 ## 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. **Series B** 2022 **Series A** 2024 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) [Founders Fund](https://millionrounds.com/fund/founders-fund) [Google Ventures](https://millionrounds.com/fund/gv) [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) [Quiet Capital](https://millionrounds.com/fund/quiet-capital) [Apollo](https://millionrounds.com/fund/apollo-global-management) [Active Capital](https://millionrounds.com/fund/active-capital) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) VC firm **1** round [Founders Fund](https://millionrounds.com/fund/founders-fund) VC firm **1** round [Google Ventures](https://millionrounds.com/fund/gv) Corporate VC **1** round [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) VC firm **1** round [Quiet Capital](https://millionrounds.com/fund/quiet-capital) VC firm **1** round [Apollo](https://millionrounds.com/fund/apollo-global-management) Private equity **1** round [Active Capital](https://millionrounds.com/fund/active-capital) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=fathom). ## Quick answers about Fathom ### Who invested in Fathom? Fathom's investors include Y Combinator, Lightspeed Venture Partners, Founders Fund, Google Ventures and Liquid 2 Ventures, and 3 more on record. ### How much has Fathom raised? Fathom has raised $63M across 2 rounds since 2022. ### When did Fathom last raise? Fathom's most recent round was a Series A of $17M in Sept 2024. ### What was Fathom's biggest round? Fathom's largest round on record is $46M (Series B), in Nov 2022. ### Who backed Fathom first? Fathom's first round on record, in Nov 2022, was backed by Lightspeed Venture Partners, Founders Fund and Google Ventures and 1 others. ### What stage is Fathom at? Fathom's latest named round is a Series A, in Sept 2024. ### Where is Fathom based? Fathom is based in the United States. ## Companies like Fathom 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) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app