# Assembly funding: rounds and investors > Assembly has raised $115M across 6 rounds since 2013. Investors include Y Combinator, Collaborative Fund and Alumni Ventures. Every round with its source. Source: https://millionrounds.com/company/assembly (Millionrounds; every figure on the page links to its filing or article) United States · [Pre-seed startup](https://millionrounds.com/companies) # Who invested in *Assembly* 6 rounds we have observed, with the 18 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. Events Valuation: $1.0B, Mar 2026 Y Combinator: S15 Funding summary Updated 26 Oct 2026 **$115M** raised across 6 rounds since 2013, from 6 sources **$2.9M** Venture **$1.8M** Seed **$100M** Venture **$10M** Series A **$500K** Pre-seed - **Latest round:** Pre-seed, $500K Apr 2024 - **Biggest round:** $100M Venture · Dec 2021 - **Investors:** 18 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. 2013 2015 2017 2019 2021 2023 **?** Seed **$2.9M** Venture **$1.8M** Seed **$100M** Venture **$10M** Series A **$500K** Pre-seed - **First round:** Seed - **Biggest round:** $100M - **Usual gap between rounds:** 16 months ## The rounds - **Apr 2024** Pre-seed **$500K** *1 returning* [Y Combinator](https://millionrounds.com/fund/y-combinator) Source recorded - **Dec 2022** Series A **$10M** *6 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Gaingels](https://millionrounds.com/fund/gaingels) [Upfront Ventures](https://millionrounds.com/fund/upfront-ventures) [Wonder Ventures](https://millionrounds.com/fund/wonder-ventures) [TechNexus Venture Collaborative](https://millionrounds.com/fund/technexus-venture-collaborative) Source recorded - **Dec 2021** Venture **$100M** *5 new* [GSR](https://millionrounds.com/fund/gsr) [LD Capital](https://millionrounds.com/fund/xie) [HashKey Capital](https://millionrounds.com/fund/hashkey-capital-2) [UOB Venture](https://millionrounds.com/fund/uob-venture) [Huobi Capital](https://millionrounds.com/fund/huobi-capital) Source recorded - **Oct 2021** Seed **$1.8M** *1 new* [Acrew Capital](https://millionrounds.com/fund/acrew-capital) Source recorded - **Nov 2014** Venture **$2.9M** *3 new* *1 returning* [BoxGroup](https://millionrounds.com/fund/boxgroup) [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) [Thrive Capital](https://millionrounds.com/fund/thrive-capital-2) From a historical funding record - **Jan 2013** Seed **Amount undisclosed** *3 new* [Floodgate](https://millionrounds.com/fund/floodgate) [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) [Kevin Donahue](https://millionrounds.com/fund/kevin-donahue) From a historical funding record ## 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. **Seed** 2013 **Venture** 2014 **Seed** 2021 **Venture** 2021 **Series A** 2022 **Pre-seed** 2024 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Gaingels](https://millionrounds.com/fund/gaingels) [BoxGroup](https://millionrounds.com/fund/boxgroup) [GSR](https://millionrounds.com/fund/gsr) [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) [Upfront Ventures](https://millionrounds.com/fund/upfront-ventures) [Floodgate](https://millionrounds.com/fund/floodgate) [LD Capital](https://millionrounds.com/fund/xie) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) VC firm **2** rounds [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **1** round [Gaingels](https://millionrounds.com/fund/gaingels) Private equity **1** round [BoxGroup](https://millionrounds.com/fund/boxgroup) VC firm **1** round [GSR](https://millionrounds.com/fund/gsr) VC firm **1** round [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) VC firm **1** round [Upfront Ventures](https://millionrounds.com/fund/upfront-ventures) VC firm **1** round [Floodgate](https://millionrounds.com/fund/floodgate) VC firm **1** round [LD Capital](https://millionrounds.com/fund/xie) VC firm **1** round [Thrive Capital](https://millionrounds.com/fund/thrive-capital-2) Family office **1** round [Acrew Capital](https://millionrounds.com/fund/acrew-capital) VC firm **1** round [HashKey Capital](https://millionrounds.com/fund/hashkey-capital-2) VC firm **1** round [UOB Venture](https://millionrounds.com/fund/uob-venture) VC firm **1** round [Wonder Ventures](https://millionrounds.com/fund/wonder-ventures) VC firm **1** round [TechNexus Venture Collaborative](https://millionrounds.com/fund/technexus-venture-collaborative) Accelerator **1** round [Huobi Capital](https://millionrounds.com/fund/huobi-capital) Corporate VC **1** round [Kevin Donahue](https://millionrounds.com/fund/kevin-donahue) Angel **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=assembly). ## Also claim to have backed them This firm lists Assembly 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. [757 Collab](https://millionrounds.com/fund/757-collab) Accelerator Per its own site ## Quick answers about Assembly ### Who invested in Assembly? Assembly's investors include Y Combinator, Collaborative Fund, Alumni Ventures, Gaingels and BoxGroup, and 13 more on record. ### How much has Assembly raised? Assembly has raised $115M across 6 rounds since 2013. One round did not disclose an amount, so the total is a floor. ### When did Assembly last raise? Assembly's most recent round was a Pre-seed of $500K in Apr 2024. ### What was Assembly's biggest round? Assembly's largest round on record is $100M (Venture), in Dec 2021. ### Who backed Assembly first? Assembly's first round on record, in Jan 2013, was backed by Floodgate, Collaborative Fund and Kevin Donahue. ### What stage is Assembly at? Assembly's latest named round is a Pre-seed, in Apr 2024. ### Where is Assembly based? Assembly is based in the United States. ## Companies like Assembly In the same sector, and raised in the last eighteen months. [**Vesta** $60M · Oct 2026](https://millionrounds.com/company/vesta)[**Funl Events** $2.5M · Sept 2026](https://millionrounds.com/company/funl-events)[**Hive** $100M · Jul 2026](https://millionrounds.com/company/hive)[**Sports Illustrated Tickets** $51M · May 2026](https://millionrounds.com/company/sports-illustrated-tickets)[**Dex** $16M · Apr 2026](https://millionrounds.com/company/dex)[**Wygo** $1.6M · Apr 2026](https://millionrounds.com/company/wygo) ## 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