# Pulmatrix funding: rounds and investors > Pulmatrix has raised $85M across 7 rounds since 2009. Investors include Polaris Partners, 5AM Ventures and ARCH Venture Partners. Every round with its source. Source: https://millionrounds.com/company/pulmatrix (Millionrounds; every figure on the page links to its filing or article) United States · [Growth startup](https://millionrounds.com/companies) # Who invested in *Pulmatrix* 7 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 Raised 6 months ago Funding summary Updated 26 Oct 2026 **$85M** raised across 7 rounds since 2009, from 7 sources **$3.5M** Series A **$30M** Series B **$5.7M** Grant **$14M** Series B **$21M** Debt **$10M** Growth **$1.0M** Round - **Latest round:** Round, $1.0M Apr 2026 - **Biggest round:** $30M Series B · Nov 2009 - **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. 2009 2012 2015 2018 2021 2024 **$3.5M** Series A **$30M** Series B **$5.7M** Grant **$14M** Series B **$21M** Debt **$10M** Growth **$1.0M** Round - **First round:** Series A, $3.5M - **Biggest round:** $30M - **Usual gap between rounds:** 18 months ## The rounds - **Apr 2026** Round **$1.0M** No investor was named in the report. Filed with the SEC (Form D); no report of this raise yet SEC filing: $1.0M sold, first sale Apr 2026 - **Jun 2015** Growth **$10M** *1 new* *3 returning* [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) [Altitude Life Science Ventures](https://millionrounds.com/fund/altitude-life-science-ventures) From a historical funding record SEC filing: $688K sold, first sale Jun 2015 - **Feb 2013** Debt **$21M** No investor was named in the report. Reported by sec.gov SEC filing: $21M sold, first sale Aug 2011 - **Aug 2011** Series B **$14M** *4 returning* [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Novartis Venture Fund](https://millionrounds.com/fund/novartis-venture-fund) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) Reported by eon.businesswire.com SEC filing: $5.0M sold, first sale Aug 2011 - **Dec 2010** Grant **$5.7M** No investor was named in the report. Reported by fis.dowjones.com - **Nov 2009** Series B **$30M** *3 new* *2 returning* [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Novartis Venture Fund](https://millionrounds.com/fund/novartis-venture-fund) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) [Novartis Bioventures](https://millionrounds.com/fund/novartis-bioventures) Reported by xconomy.com SEC filing: $15M sold, first sale Oct 2009 - **Mar 2009** Series A **$3.5M** *2 new* [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) Reported by masshightech.com ## 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 A** 2009 **Series B** 2009 **Grant** 2010 **Series B** 2011 **Debt** 2013 **Growth** 2015 **Round** 2026 [Polaris Partners](https://millionrounds.com/fund/polaris-partners) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) [Novartis Venture Fund](https://millionrounds.com/fund/novartis-venture-fund) [Altitude Life Science Ventures](https://millionrounds.com/fund/altitude-life-science-ventures) [Novartis Bioventures](https://millionrounds.com/fund/novartis-bioventures) ## Everyone who backed them [Polaris Partners](https://millionrounds.com/fund/polaris-partners) VC firm **4** rounds [5AM Ventures](https://millionrounds.com/fund/5am-ventures) VC firm **4** rounds [ARCH Venture Partners](https://millionrounds.com/fund/arch-venture-partners) VC firm **3** rounds [Novartis Venture Fund](https://millionrounds.com/fund/novartis-venture-fund) Corporate VC **2** rounds [Altitude Life Science Ventures](https://millionrounds.com/fund/altitude-life-science-ventures) VC firm **1** round [Novartis Bioventures](https://millionrounds.com/fund/novartis-bioventures) Growth equity **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=pulmatrix). ## Quick answers about Pulmatrix ### Who invested in Pulmatrix? Pulmatrix's investors include Polaris Partners, 5AM Ventures, ARCH Venture Partners, Novartis Venture Fund and Altitude Life Science Ventures, and 1 more on record. ### How much has Pulmatrix raised? Pulmatrix has raised $85M across 7 rounds since 2009. ### When did Pulmatrix last raise? Pulmatrix's most recent round, $1.0M, was in Apr 2026. ### What was Pulmatrix's biggest round? Pulmatrix's largest round on record is $30M (Series B), in Nov 2009. ### Who backed Pulmatrix first? Pulmatrix's first round on record, in Mar 2009, was backed by Polaris Partners and 5AM Ventures. ### What stage is Pulmatrix at? Pulmatrix's latest named round is a Growth, in Jun 2015. ### Where is Pulmatrix based? Pulmatrix is based in the United States. ## Companies like Pulmatrix In the same sector, and raised in the last eighteen months. 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