# Source3 funding: rounds and investors > Source3 has raised $4.0M across 2 rounds since 2015. Investors include Correlation Ventures, Crosslink Capital and 645 Ventures. Every round with its source. Source: https://millionrounds.com/company/source3 (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Source3* 2 rounds we have observed, with the 7 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. Advanced Manufacturing Funding summary Updated 26 Oct 2026 **$4.0M** raised across 2 rounds since 2015, from 2 sources - **Latest round:** Venture Mar 2017 - **Biggest round:** $4.0M Seed · Sept 2015 - **Investors:** 7 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. 2016 2017 **$4.0M** Seed **?** Venture - **First round:** Seed, $4.0M - **Biggest round:** $4.0M - **Between rounds:** 18 months ## The rounds - **Mar 2017** Venture **Amount undisclosed** *1 new* *3 returning* [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) [Crosslink Capital](https://millionrounds.com/fund/crosslink-capital) [645 Ventures](https://millionrounds.com/fund/645-ventures) [Company Ventures](https://millionrounds.com/fund/ag-ventures) Source recorded - **Sept 2015** Seed **$4.0M** *6 new* [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) [Crosslink Capital](https://millionrounds.com/fund/crosslink-capital) [Western Technology Investment](https://millionrounds.com/fund/wti) [Contour Venture Partners](https://millionrounds.com/fund/contour-venture-partners) [645 Ventures](https://millionrounds.com/fund/645-ventures) [Spark Investment Fund.](https://millionrounds.com/fund/spark-investment-fund) 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** 2015 **Venture** 2017 [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) [Crosslink Capital](https://millionrounds.com/fund/crosslink-capital) [645 Ventures](https://millionrounds.com/fund/645-ventures) [Western Technology Investment](https://millionrounds.com/fund/wti) [Contour Venture Partners](https://millionrounds.com/fund/contour-venture-partners) [Company Ventures](https://millionrounds.com/fund/ag-ventures) [Spark Investment Fund.](https://millionrounds.com/fund/spark-investment-fund) ## Everyone who backed them [Correlation Ventures](https://millionrounds.com/fund/correlation-ventures) VC firm **2** rounds [Crosslink Capital](https://millionrounds.com/fund/crosslink-capital) VC firm **2** rounds [645 Ventures](https://millionrounds.com/fund/645-ventures) VC firm **2** rounds [Western Technology Investment](https://millionrounds.com/fund/wti) VC firm **1** round [Contour Venture Partners](https://millionrounds.com/fund/contour-venture-partners) VC firm **1** round [Company Ventures](https://millionrounds.com/fund/ag-ventures) VC firm **1** round [Spark Investment Fund.](https://millionrounds.com/fund/spark-investment-fund) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=source3). ## Also claim to have backed them This firm lists Source3 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. [Company Ventures](https://millionrounds.com/fund/company-ventures) VC firm Per its own site ## Quick answers about Source3 ### Who invested in Source3? Source3's investors include Correlation Ventures, Crosslink Capital, 645 Ventures, Western Technology Investment and Contour Venture Partners, and 2 more on record. ### How much has Source3 raised? Source3 has raised $4.0M across 2 rounds since 2015. One round did not disclose an amount, so the total is a floor. ### When did Source3 last raise? Source3's most recent round was a Venture in Mar 2017. ### What was Source3's biggest round? Source3's largest round on record is $4.0M (Seed), in Sept 2015. ### Who backed Source3 first? Source3's first round on record, in Sept 2015, was backed by Correlation Ventures, Crosslink Capital and Western Technology Investment and 3 others. ### What stage is Source3 at? Source3's latest named round is a Venture, in Mar 2017. ### Where is Source3 based? Source3 is based in the United States. ## Companies like Source3 In the same sector, and raised in the last eighteen months. [**Ultrasonium** Sept 2026](https://millionrounds.com/company/ultrasonium)[**BILT** $272M · Sept 2026](https://millionrounds.com/company/bilt)[**HopFlyt** $2.0M · Sept 2026](https://millionrounds.com/company/hopflyt)[**FluidForm Bio** $1.7M · Aug 2026](https://millionrounds.com/company/fluidform-bio)[**unspun** $42M · Aug 2026](https://millionrounds.com/company/unspun)[**Vntana** $5.3M · Jul 2026](https://millionrounds.com/company/vntana) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. 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