# Arsanis funding: rounds and investors > Arsanis has raised $76M across 4 rounds since 2010. Investors include OrbiMed, Polaris Partners and SV Life Sciences. Every round with its source. Source: https://millionrounds.com/company/arsanis (Millionrounds; every figure on the page links to its filing or article) Austria · [Series D startup](https://millionrounds.com/companies) # Who invested in *Arsanis* 4 rounds we have observed, with the 9 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. Biotech Healthcare Funding summary Updated 26 Oct 2026 **$76M** raised across 4 rounds since 2010, from 4 sources **$400K** Venture **$10M** Series A **$20M** Series B **$46M** Series D - **Latest round:** Series D, $46M Apr 2017 - **Step-up i:** 2.3× - **Investors:** 9 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. 2011 2012 2013 2014 2015 2016 2017 **$400K** Venture **$10M** Series A **$20M** Series B **$46M** Series D - **First round:** Venture, $400K - **Biggest round:** $46M - **Usual gap between rounds:** 2.5 years ## The rounds - **Apr 2017** Series D **$46M** *5 new* *2 returning* [OrbiMed](https://millionrounds.com/fund/orbimed) [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) [NeoMed](https://millionrounds.com/fund/neomed) [Goldbell Group](https://millionrounds.com/fund/polaris) [EMBL Ventures](https://millionrounds.com/fund/embl-ventures) Bill & Melinda Gates Foundation/ GV SV Reported by FinSMEs SEC filing: $46M sold, first sale Apr 2017 - **Sept 2013** Series B **$20M** *1 new* *3 returning* [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [OrbiMed](https://millionrounds.com/fund/orbimed) [SV Life Sciences](https://millionrounds.com/fund/sv-life-sciences) [NeoMed](https://millionrounds.com/fund/neomed) Reported by biospace.com SEC filing: $13M sold, first sale Jul 2013 - **Feb 2011** Series A **$10M** *3 new* [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [OrbiMed](https://millionrounds.com/fund/orbimed) [SV Life Sciences](https://millionrounds.com/fund/sv-life-sciences) Reported by news-medical.net SEC filing: $9.6M sold, first sale Jan 2011 - **Sept 2010** Venture **$400K** No investor was named in the report. From a historical funding record SEC filing: $400K sold, first sale Sept 2010 ## Founders and team From the SEC filings it signed: 5 on the team. - **Chris U. Stevens** Executive Officer i - **David U. Mantus** Executive Officer i - **Eszter U. Nagy** Executive Officer i - **Michael Gray** Executive Officer i - **Rene Russo** Executive Officer, Director i On the board, as filed i *Amy U. Schulman* *Carl U. Gordon* *Claudio U. Nessi* *David U. McGirr* *Michael U. Ross* *Terrance U. McGuire* *Tillman U. Gerngross* *William U. Clark* ## 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. **Venture** 2010 **Series A** 2011 **Series B** 2013 **Series D** 2017 [OrbiMed](https://millionrounds.com/fund/orbimed) [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [SV Life Sciences](https://millionrounds.com/fund/sv-life-sciences) [NeoMed](https://millionrounds.com/fund/neomed) [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) [Goldbell Group](https://millionrounds.com/fund/polaris) [EMBL Ventures](https://millionrounds.com/fund/embl-ventures) Bill & Melinda Gates Foundation/ GV SV ## Everyone who backed them [OrbiMed](https://millionrounds.com/fund/orbimed) Private equity **3** rounds [Polaris Partners](https://millionrounds.com/fund/polaris-partners) VC firm **2** rounds [SV Life Sciences](https://millionrounds.com/fund/sv-life-sciences) VC firm **2** rounds [NeoMed](https://millionrounds.com/fund/neomed) Growth equity **2** rounds [Alexandria Real Estate Equities](https://millionrounds.com/fund/alexandria) VC firm **1** round [Goldbell Group](https://millionrounds.com/fund/polaris) Growth equity **1** round [EMBL Ventures](https://millionrounds.com/fund/embl-ventures) VC firm **1** round Bill & Melinda Gates Foundation/ GV no record of our own yet **1** round SV 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=arsanis). ## Quick answers about Arsanis ### Who invested in Arsanis? Arsanis's investors include OrbiMed, Polaris Partners, SV Life Sciences, NeoMed and Alexandria Real Estate Equities, and 4 more on record. ### How much has Arsanis raised? Arsanis has raised $76M across 4 rounds since 2010. ### When did Arsanis last raise? Arsanis's most recent round was a Series D of $46M in Apr 2017. ### What was Arsanis's biggest round? Its most recent round, $46M in Apr 2017, is also its largest on record. ### Who backed Arsanis first? Arsanis's first round on record, in Feb 2011, was backed by Polaris Partners, OrbiMed and SV Life Sciences. ### What stage is Arsanis at? Arsanis's latest named round is a Series D, in Apr 2017. ### Where is Arsanis based? Arsanis is based in Austria. ## Companies like Arsanis In the same sector, and raised in the last eighteen months. [**PureSurf** $1.8M · Sept 2026](https://millionrounds.com/company/puresurf)[**SOMAREALITY** $6.2M · Jun 2026](https://millionrounds.com/company/somareality)[**VALANX Biotech** $3.5M · Mar 2026](https://millionrounds.com/company/valanx-biotech)[**Flinn.ai** $20M · Feb 2026](https://millionrounds.com/company/flinn-ai)[**piur imaging** $6.6M · Jul 2025](https://millionrounds.com/company/piur-imaging)[**Coherence Neuro** $55M · Oct 2026](https://millionrounds.com/company/coherence-neuro) ## 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