# Astronomer funding: rounds and investors > Astronomer has raised $101M across 4 rounds since 2015. Investors include Bain Capital Ventures, CincyTech and Sierra Ventures. Every round with its source. Source: https://millionrounds.com/company/astronomer (Millionrounds; every figure on the page links to its filing or article) United States · [Series D startup](https://millionrounds.com/companies) # Who invested in *Astronomer* 4 rounds we have observed, with the 24 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 Big Data & Analytics Valuation: $1.2B, Mar 2026 Follow Astronomer and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fastronomer) Funding summary Updated 15 Nov 2026 **$101M** raised across 4 rounds since 2015, from 5 sources **$1.9M** Seed **$5.7M** Seed **$93M** Series D - **Latest round:** Series D, $93M May 2025 - **Led by:** Bain Capital Ventures - **Step-up i:** 16.3× - **Investors:** 24 (2 led) 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. 2015 2017 2019 2021 2023 2025 **?** Seed **$1.9M** Seed **$5.7M** Seed **$93M** Series D - **First round:** Seed - **Biggest round:** $93M - **Usual gap between rounds:** 2.9 years ## The rounds - **May 2025** Series D **$93M** *8 new* *1 returning* [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) Lead [500 Global](https://millionrounds.com/fund/500-startups) [Insight Partners](https://millionrounds.com/fund/insight-venture-partners) [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) [Venrock](https://millionrounds.com/fund/venrock) [FirstMark](https://millionrounds.com/fund/firstmark) [K5 Global](https://millionrounds.com/fund/k5-global) [Meritech Capital Partners](https://millionrounds.com/fund/meritech-capital-partners) [Bosch Ventures](https://millionrounds.com/fund/bosch-ventures) Reported by Crunchbase News and 1 other - **Sept 2019** Seed **$5.7M** *6 new* *1 returning* [Sierra Ventures](https://millionrounds.com/fund/sierra-ventures) Lead [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) [CincyTech](https://millionrounds.com/fund/cincytech) [Grand Ventures](https://millionrounds.com/fund/grand-ventures) [Wireframe Ventures](https://millionrounds.com/fund/wireframe-ventures) [Refinery Ventures](https://millionrounds.com/fund/refinery-ventures) Frontline Capital Ventures Reported by FinSMEs - **Oct 2016** Seed **$1.9M** *1 new* [CincyTech](https://millionrounds.com/fund/cincytech) Reported by FinSMEs - **Jun 2015** Seed **Amount undisclosed** *9 new* [Drummond Road Capital](https://millionrounds.com/fund/drummond-road-capital) [Morris Wheeler](https://millionrounds.com/fund/morris-wheeler) [Differential](https://millionrounds.com/fund/differential) Andy Hill Ben Pflederer Charlie Key Keen IO Randy Brunk Tim Metzner From a historical funding record ## Funding filed with regulators Astronomer filed one raise, $1.9M in all. Filings say how much was sold and to how many investors; they never name the investors. - Apr 2017 **$1.9M** 9 investors equity of $2.5M offered SEC Form D ## Founders and team From the SEC filings it signed: 2 on the team. - **Ryan Walker** Executive Officer, Director i - **Timothy Brunk** Executive Officer, Director i On the board, as filed i *Michael Venerable* ## 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 **Seed** 2016 **Seed** 2019 **Series D** 2025 [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) L [CincyTech](https://millionrounds.com/fund/cincytech) [Sierra Ventures](https://millionrounds.com/fund/sierra-ventures) L [500 Global](https://millionrounds.com/fund/500-startups) [Insight Partners](https://millionrounds.com/fund/insight-venture-partners) [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) [Venrock](https://millionrounds.com/fund/venrock) [FirstMark](https://millionrounds.com/fund/firstmark) [K5 Global](https://millionrounds.com/fund/k5-global) [Meritech Capital Partners](https://millionrounds.com/fund/meritech-capital-partners) ## Everyone who backed them [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) VC firm **2** rounds, led 1 [CincyTech](https://millionrounds.com/fund/cincytech) VC firm **2** rounds [Sierra Ventures](https://millionrounds.com/fund/sierra-ventures) VC firm **1** round, led 1 [500 Global](https://millionrounds.com/fund/500-startups) Angel **1** round [Insight Partners](https://millionrounds.com/fund/insight-venture-partners) VC firm **1** round [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) Corporate VC **1** round [Venrock](https://millionrounds.com/fund/venrock) VC firm **1** round [FirstMark](https://millionrounds.com/fund/firstmark) VC firm **1** round [K5 Global](https://millionrounds.com/fund/k5-global) Private equity **1** round [Meritech Capital Partners](https://millionrounds.com/fund/meritech-capital-partners) VC firm **1** round [Bosch Ventures](https://millionrounds.com/fund/bosch-ventures) Corporate VC **1** round [Drummond Road Capital](https://millionrounds.com/fund/drummond-road-capital) VC firm **1** round [Grand Ventures](https://millionrounds.com/fund/grand-ventures) VC firm **1** round [Morris Wheeler](https://millionrounds.com/fund/morris-wheeler) Angel **1** round [Wireframe Ventures](https://millionrounds.com/fund/wireframe-ventures) VC firm **1** round [Differential](https://millionrounds.com/fund/differential) Venture studio **1** round [Refinery Ventures](https://millionrounds.com/fund/refinery-ventures) VC firm **1** round Andy Hill no record of our own yet **1** round Ben Pflederer no record of our own yet **1** round Charlie Key no record of our own yet **1** round Frontline Capital Ventures no record of our own yet **1** round Keen IO no record of our own yet **1** round Randy Brunk no record of our own yet **1** round Tim Metzner no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=astronomer). ## Also claim to have backed them These 3 firms list Astronomer as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Frontline Ventures](https://millionrounds.com/fund/frontline-ventures) VC firm Per its own site [CoreNetwork Fund](https://millionrounds.com/fund/corenetwork-fund) VC firm Per its own site [Conduit](https://millionrounds.com/fund/conduit) Accelerator Per its own site ## Quick answers about Astronomer ### Who invested in Astronomer? Astronomer's investors include Bain Capital Ventures, CincyTech, Sierra Ventures, 500 Global and Insight Partners, and 19 more on record. Bain Capital Ventures led its latest round. ### How much has Astronomer raised? Astronomer has raised $101M across 4 rounds since 2015. One round did not disclose an amount, so the total is a floor. ### When did Astronomer last raise? Astronomer's most recent round was a Series D of $93M in May 2025, led by Bain Capital Ventures. ### What was Astronomer's biggest round? Its most recent round, $93M in May 2025, is also its largest on record. ### Who backed Astronomer first? Astronomer's first round on record, in Jun 2015, was backed by Drummond Road Capital, Morris Wheeler and Differential and 6 others. ### What stage is Astronomer at? Astronomer's latest named round is a Series D, in May 2025. ### Where is Astronomer based? Astronomer is based in the United States. ### Who led Astronomer's rounds? Sierra Ventures led the Seed in 2019; Bain Capital Ventures led the Series D in 2025. ## Companies like Astronomer In the same sector, and raised in the last eighteen months. [**LangChain** $425M · Nov 2026](https://millionrounds.com/company/langchain)[**VuMedi** $142M · Nov 2026](https://millionrounds.com/company/vumedi)[**Betterness** $3.5M · Nov 2026](https://millionrounds.com/company/betterness)[**Axle** $12M · Nov 2026](https://millionrounds.com/company/axle)[**CrunchAtlas** $250K · Nov 2026](https://millionrounds.com/company/crunchatlas)[**Zus Health** $73M · Nov 2026](https://millionrounds.com/company/zus-health) ## 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