United States · Who invested in Sienna Biopharmaceuticals?
Sienna Biopharmaceuticals's investors include Fidelity, ARCH Venture Partners, Omega Funds, Altitude Life Science Ventures and Dr. David Pyott, and 1 more on record.
2018
$40MSeries B?VentureUnited States · Venture startup
Who invested in Sienna Biopharmaceuticals
Funding summaryUpdated 26 Oct 2026
$40Mraised across 2 rounds since 2017, from 2 sources
- Latest round
- VentureAug 2018
- Biggest round
- $40MSeries B · Apr 2017
- Investors
- 6
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 B, $40M Apr 2017
- Biggest round
- $40M Series B · Apr 2017
- Between rounds
- 15 months from the last two
The rounds
- Aug 2018
- Apr 2017Series B$40M5 new
- Fidelity
ARCH Venture Partners
Altitude Life Science Ventures- Dr. David Pyott
- Venvest Capital/ Partner Fund
Reported by FinSMEsSEC filing: $47M sold, first sale Oct 2015
Founders and team
From the SEC filings it signed: 6 on the team.
- Diane F. StroehmannExecutive Officeri
- Frederick C. BeddingfieldExecutive Officer, Directori
- Paul F. LizzulExecutive Officeri
- Ric C. PetersonExecutive Officeri
- Timothy K. AndrewsExecutive Officeri
- Todd C. HarrisExecutive Officer, Directori
On the board, as filediBob R. MoreDennis R. FentonKeith R. LeonardKristina R. BurowRobert R. Nelsen
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 B2017Venture2018FidelityARCH Venture Partners
Omega FundsAltitude Life Science VenturesDr. David PyottVenvest Capital/ Partner Fund
ARCH Venture PartnersOmega FundsAltitude Life Science VenturesDr. David PyottVenvest Capital/ Partner FundEveryone who backed them
FidelityVC firm2rounds
Dr. David Pyottno record of our own yet1round
Venvest Capital/ Partner Fundno record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Sienna Biopharmaceuticals
How much has Sienna Biopharmaceuticals raised?
Sienna Biopharmaceuticals has raised $40M across 2 rounds since 2017. One round did not disclose an amount, so the total is a floor.
When did Sienna Biopharmaceuticals last raise?
Sienna Biopharmaceuticals's most recent round was a Venture in Aug 2018.
What was Sienna Biopharmaceuticals's biggest round?
Sienna Biopharmaceuticals's largest round on record is $40M (Series B), in Apr 2017.
Who backed Sienna Biopharmaceuticals first?
Sienna Biopharmaceuticals's first round on record, in Apr 2017, was backed by Fidelity, ARCH Venture Partners and Altitude Life Science Ventures and 2 others.
What stage is Sienna Biopharmaceuticals at?
Sienna Biopharmaceuticals's latest named round is a Venture, in Aug 2018.
Where is Sienna Biopharmaceuticals based?
Sienna Biopharmaceuticals is based in the United States.
Companies like Sienna Biopharmaceuticals
In the same sector, and raised in the last eighteen months.
Find investors like these
Search every investor by what they have actually funded, then narrow to your stage and market. Free.