Astronomer
The best place to run Apache Airflow
Cincinnati, United States · Founded 2018 · $372.4M raised
- Headquarters
- Cincinnati, Ohio
- Employees
- 201–500
- Founded
- 2018
- Business Model
- B2B
- Website
- astronomer.io
- Total Funding
- $372.4M
- Last Round
- $93.0M Series DMay 2025
- Rounds
- 6
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
Indexed holds 6 funding rounds and 12 investors for this company. The full record is or through the API.
About
Astronomer is the company behind Astro, the industry-leading data orchestration platform powered by Apache Airflow. As the primary driver of Apache Airflow releases since 2018, Astronomer helps data teams build, run, and monitor mission-critical data pipelines and AI workflows with managed infrastructure, observability, and AI-powered debugging across AWS, Azure, and Google Cloud.
Summary
Astronomer is a Data & Analytics company based in Cincinnati, United States, founded in 2018. It has raised $372.4M in total across 6 rounds, most recently a $93.0M Series D round in May 2025. Investors include Bain Capital Ventures, Venrock and Sierra Ventures.
Tech & App Stack
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Funding History
May 2025
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Funding: Seed through Series D. Amounts, valuations, and investors where available.
Investors
Bain Capital Ventures
4 rounds
Venrock
4 rounds
Sierra Ventures
4 rounds
Insight Partners
2 rounds
Wireframe Ventures
2 rounds
CincyTech
2 rounds
Frontline Ventures
3 rounds
Grand Ventures
3 rounds
Salesforce Ventures
2 rounds
Meritech Capital Partners
2 rounds
J.P. Morgan
1 round
Sutter Hill
1 round
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