Norway · 
Who invested in OptiNose?
OptiNose's investors include Entrepreneurs Fund, Avista Capital Partners, WFD Ventures and Fidelity Management/ Avista Capital.
20102011201220132014201520162017
$49MSeries C$35MSeries C$30MSeries D$37MSeries DNorway · Series D startup
Who invested in OptiNose
Funding summaryUpdated 26 Oct 2026
$151Mraised across 4 rounds since 2010, from 4 sources
$49MSeries C$35MSeries C$30MSeries D$37MSeries D
- Latest round
- Series D, $37MMay 2017
- Biggest round
- $49MSeries C · Jun 2010
- Step-upi
- 1.2×
- Investors
- 4
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series C, $49M Jun 2010
- Biggest round
- $49M Series C · Jun 2010
- Usual gap between rounds
- 19 months the median of 3
The rounds
- May 2017Series D$37M1 new1 returning
Entrepreneurs Fund- Fidelity Management/ Avista Capital
Reported by FinSMEsSEC filing: $35M sold, first sale Mar 2017
- Oct 2015Series D$30M
No investor was named in the report.
From a historical funding recordSEC filing: $15M sold, first sale Sept 2015
- Aug 2014Series C$35M2 new1 returning
From a historical funding recordSEC filing: $30M sold, first sale Jul 2014
- Jun 2010Series C$49M1 new
Reported by optinose.comSEC filing: $21M sold, first sale Jun 2010
Founders and team
From the SEC filings it signed: 4 on the team.
- Ramy A. MahmoudChief Executive Officeri
- Anthony J. KrickChief Accounting Officeri
- Michael F. MarinoChief Legal Officer and Corporate Secretaryi
- Paul A. SpenceChief Commercial Officeri
On the board, as filediCatherine E. OwenEric John BednarskiKyle John DempseyR. John FletcherSandra L. HeltonTomas J. HeymanWilhelmus 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 C2010Series C2014Series D2015Series D2017Entrepreneurs Fund
Avista Capital PartnersWFD VenturesFidelity Management/ Avista Capital
Entrepreneurs FundAvista Capital PartnersWFD VenturesFidelity Management/ Avista CapitalEveryone who backed them
WFD VenturesPrivate equity1round
Fidelity Management/ Avista Capitalno record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
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.
Quick answers about OptiNose
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.
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