# OptiNose funding: rounds and investors > OptiNose has raised $151M across 4 rounds since 2010. Investors include Entrepreneurs Fund, Avista Capital Partners and WFD Ventures. Source: https://millionrounds.com/company/optinose (Millionrounds; every figure on the page links to its filing or article) Norway · [Series D startup](https://millionrounds.com/companies) # Who invested in *OptiNose* 4 rounds we have observed, with the 4 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 **$151M** raised across 4 rounds since 2010, from 4 sources **$49M** Series C **$35M** Series C **$30M** Series D **$37M** Series D - **Latest round:** Series D, $37M May 2017 - **Biggest round:** $49M Series C · Jun 2010 - **Step-up i:** 1.2× - **Investors:** 4 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. 2010 2011 2012 2013 2014 2015 2016 2017 **$49M** Series C **$35M** Series C **$30M** Series D **$37M** Series D - **First round:** Series C, $49M - **Biggest round:** $49M - **Usual gap between rounds:** 19 months ## The rounds - **May 2017** Series D **$37M** *1 new* *1 returning* [Entrepreneurs Fund](https://millionrounds.com/fund/entrepreneurs-fund) Fidelity Management/ Avista Capital Reported by FinSMEs SEC filing: $35M sold, first sale Mar 2017 - **Oct 2015** Series D **$30M** No investor was named in the report. From a historical funding record SEC filing: $15M sold, first sale Sept 2015 - **Aug 2014** Series C **$35M** *2 new* *1 returning* [Entrepreneurs Fund](https://millionrounds.com/fund/entrepreneurs-fund) [WFD Ventures](https://millionrounds.com/fund/wfd-ventures) [Avista Capital Partners](https://millionrounds.com/fund/avista-capital-partners) From a historical funding record SEC filing: $30M sold, first sale Jul 2014 - **Jun 2010** Series C **$49M** *1 new* [Avista Capital Partners](https://millionrounds.com/fund/avista-capital-partners) Reported by optinose.com SEC filing: $21M sold, first sale Jun 2010 ## Founders and team From the SEC filings it signed: 4 on the team. - **Ramy A. Mahmoud** Chief Executive Officer i - **Anthony J. Krick** Chief Accounting Officer i - **Michael F. Marino** Chief Legal Officer and Corporate Secretary i - **Paul A. Spence** Chief Commercial Officer i On the board, as filed i *Catherine E. Owen* *Eric John Bednarski* *Kyle John Dempsey* *R. John Fletcher* *Sandra L. Helton* *Tomas J. Heyman* *Wilhelmus John Groenhuysen* ## 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. **Series C** 2010 **Series C** 2014 **Series D** 2015 **Series D** 2017 [Entrepreneurs Fund](https://millionrounds.com/fund/entrepreneurs-fund) [Avista Capital Partners](https://millionrounds.com/fund/avista-capital-partners) [WFD Ventures](https://millionrounds.com/fund/wfd-ventures) Fidelity Management/ Avista Capital ## Everyone who backed them [Entrepreneurs Fund](https://millionrounds.com/fund/entrepreneurs-fund) VC firm **2** rounds [Avista Capital Partners](https://millionrounds.com/fund/avista-capital-partners) Private equity **2** rounds [WFD Ventures](https://millionrounds.com/fund/wfd-ventures) Private equity **1** round Fidelity Management/ Avista Capital 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=optinose). ## Also claim to have backed them This firm lists OptiNose 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. [Athyrium Capital Management](https://millionrounds.com/fund/athyrium-capital-management-lp) Private equity Per its own site ## Quick answers about OptiNose ### Who invested in OptiNose? OptiNose's investors include Entrepreneurs Fund, Avista Capital Partners, WFD Ventures and Fidelity Management/ Avista Capital. ### How much has OptiNose raised? OptiNose has raised $151M across 4 rounds since 2010. ### When did OptiNose last raise? OptiNose's most recent round was a Series D of $37M in May 2017. ### What was OptiNose's biggest round? OptiNose's largest round on record is $49M (Series C), in Jun 2010. ### Who backed OptiNose first? OptiNose's first round on record, in Jun 2010, was backed by Avista Capital Partners. ### What stage is OptiNose at? OptiNose's latest named round is a Series D, in May 2017. ### Where is OptiNose based? OptiNose is based in Norway. ## Companies like OptiNose In the same sector, and raised in the last eighteen months. [**Zelluna Immunotherapy** $6.1M · Jun 2026](https://millionrounds.com/company/zelluna-immunotherapy)[**Circio** $32M · Jun 2026](https://millionrounds.com/company/circio)[**Biosort** $11M · Feb 2026](https://millionrounds.com/company/biosort)[**Alginor ASA** $43M · Oct 2025](https://millionrounds.com/company/alginor-asa)[**Aurora Analytica** $50K · Oct 2025](https://millionrounds.com/company/aurora-analytica)[**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. 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