# Sienna Biopharmaceuticals funding: rounds and investors > Sienna Biopharmaceuticals has raised $40M across 2 rounds since 2017. Investors include Fidelity, ARCH Venture Partners and Omega Funds. Source: https://millionrounds.com/company/sienna-biopharmaceuticals (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Sienna Biopharmaceuticals* 2 rounds we have observed, with the 6 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 **$40M** raised across 2 rounds since 2017, from 2 sources - **Latest round:** Venture Aug 2018 - **Biggest round:** $40M Series B · Apr 2017 - **Investors:** 6 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. 2018 **$40M** Series B **?** Venture - **First round:** Series B, $40M - **Biggest round:** $40M - **Between rounds:** 15 months ## The rounds - **Aug 2018** Venture **Amount undisclosed** *1 new* *2 returning* [Fidelity](https://millionrounds.com/fund/fidelity) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Omega Funds](https://millionrounds.com/fund/omega-funds) Source recorded - **Apr 2017** Series B **$40M** *5 new* [Fidelity](https://millionrounds.com/fund/fidelity) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Altitude Life Science Ventures](https://millionrounds.com/fund/altitude-life-science-ventures) Dr. David Pyott Venvest Capital/ Partner Fund Reported by FinSMEs SEC filing: $47M sold, first sale Oct 2015 ## Founders and team From the SEC filings it signed: 6 on the team. - **Diane F. Stroehmann** Executive Officer i - **Frederick C. Beddingfield** Executive Officer, Director i - **Paul F. Lizzul** Executive Officer i - **Ric C. Peterson** Executive Officer i - **Timothy K. Andrews** Executive Officer i - **Todd C. Harris** Executive Officer, Director i On the board, as filed i *Bob R. More* *Dennis R. Fenton* *Keith R. Leonard* *Kristina R. Burow* *Robert 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 B** 2017 **Venture** 2018 [Fidelity](https://millionrounds.com/fund/fidelity) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Omega Funds](https://millionrounds.com/fund/omega-funds) [Altitude Life Science Ventures](https://millionrounds.com/fund/altitude-life-science-ventures) Dr. David Pyott Venvest Capital/ Partner Fund ## Everyone who backed them [Fidelity](https://millionrounds.com/fund/fidelity) VC firm **2** rounds [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) VC firm **2** rounds [Omega Funds](https://millionrounds.com/fund/omega-funds) VC firm **1** round [Altitude Life Science Ventures](https://millionrounds.com/fund/altitude-life-science-ventures) VC firm **1** round Dr. David Pyott no record of our own yet **1** round Venvest Capital/ Partner Fund 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=sienna-biopharmaceuticals). ## Quick answers about Sienna Biopharmaceuticals ### 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. ### 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. 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