# Aetion funding: rounds and investors > Aetion has raised $74M across 4 rounds since 2017. Investors include Lakestar, Flare Capital and New Enterprise Associates. Every round with its source. Source: https://millionrounds.com/company/aetion (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Aetion* 4 rounds we have observed, with the 13 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. Big Data & Analytics Biotech Healthcare Funding summary Updated 26 Oct 2026 **$74M** raised across 4 rounds since 2017, from 4 sources **$11M** Series A **$36M** Series B **$27M** Series B - **Latest round:** Venture Feb 2025 - **Biggest round:** $36M Series B · Apr 2018 - **Investors:** 13 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. 2017 2019 2021 2023 2025 **$11M** Series A **$36M** Series B **$27M** Series B **?** Venture - **First round:** Series A, $11M - **Biggest round:** $36M - **Usual gap between rounds:** 13 months ## The rounds - **Feb 2025** Venture **Amount undisclosed** *3 new* *2 returning* [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [B Capital](https://millionrounds.com/fund/b-capital) [Lakestar](https://millionrounds.com/fund/lakestar) [Foresite Capital](https://millionrounds.com/fund/forsite-capital) [Sanofi](https://millionrounds.com/fund/sanofi) Source recorded - **Feb 2019** Series B **$27M** *6 new* *2 returning* [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [Lakestar](https://millionrounds.com/fund/lakestar) [Flare Capital](https://millionrounds.com/fund/flare-capital-partners) [Amgen](https://millionrounds.com/fund/amgen) [Sanofi Ventures](https://millionrounds.com/fund/sanofi-ventures) [UCB Ventures](https://millionrounds.com/fund/ucb-ventures) [McKesson](https://millionrounds.com/fund/mckesson) Horizon Health Reported by FinSMEs - **Apr 2018** Series B **$36M** *2 new* *2 returning* [Lakestar](https://millionrounds.com/fund/lakestar) [Flare Capital](https://millionrounds.com/fund/flare-capital-partners) [Oxeon](https://millionrounds.com/fund/oxeon) NEA/ Amgen Reported by FinSMEs SEC filing: $36M sold, first sale Jan 2018 - **Mar 2017** Series A **$11M** *2 new* [Lakestar](https://millionrounds.com/fund/lakestar) [Flare Capital](https://millionrounds.com/fund/flare-capital-partners) Reported by FinSMEs SEC filing: $11M sold, first sale Feb 2017 ## Founders and team From Aetion's own website and the SEC filings it signed: 17 on the team. - **Amy Abernethy** President of Product Development & Chief Medical Officer - **Kyle Armbrester** Chief Executive Officer - **Conor Horton** Associate Vice President - **McLeod Physicians Associates** Associate Vice President - **Mark Harris** GM & President, Legal & Insurance - **Ashley Greenberg** Chief of Staff - **Jennifer Williams** Chief Financial Officer - **Josh Builder** Chief Technology Officer - **Kathryn Stalmack** Chief Legal Officer & General Counsel - **Sam Diederich** Chief Product Officer - **Shannon West** Chief Strategy Officer - **Susan Yun** Chief People Officer - **Annie Hurst** Head of Corporate Initiatives - **Maribeth Jimenez** Operations Manager - **Carolyn Magill** Executive Officer, Director i - **Jeremy Rassen** Executive Officer, Director i - **Mohamad Makhzoomi** Executive Officer, Director i On the board, as filed i *William Geary* ## 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** 2017 **Series B** 2018 **Series B** 2019 **Venture** 2025 [Lakestar](https://millionrounds.com/fund/lakestar) [Flare Capital](https://millionrounds.com/fund/flare-capital-partners) [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) [B Capital](https://millionrounds.com/fund/b-capital) [Foresite Capital](https://millionrounds.com/fund/forsite-capital) [Sanofi](https://millionrounds.com/fund/sanofi) [Amgen](https://millionrounds.com/fund/amgen) [Sanofi Ventures](https://millionrounds.com/fund/sanofi-ventures) [Oxeon](https://millionrounds.com/fund/oxeon) [UCB Ventures](https://millionrounds.com/fund/ucb-ventures) ## Everyone who backed them [Lakestar](https://millionrounds.com/fund/lakestar) VC firm **4** rounds [Flare Capital](https://millionrounds.com/fund/flare-capital-partners) VC firm **3** rounds [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) VC firm **2** rounds [B Capital](https://millionrounds.com/fund/b-capital) VC firm **1** round [Foresite Capital](https://millionrounds.com/fund/forsite-capital) Private equity **1** round [Sanofi](https://millionrounds.com/fund/sanofi) Investment firm **1** round [Amgen](https://millionrounds.com/fund/amgen) Corporate VC **1** round [Sanofi Ventures](https://millionrounds.com/fund/sanofi-ventures) Corporate VC **1** round [Oxeon](https://millionrounds.com/fund/oxeon) VC firm **1** round [UCB Ventures](https://millionrounds.com/fund/ucb-ventures) Corporate VC **1** round [McKesson](https://millionrounds.com/fund/mckesson) Corporate VC **1** round Horizon Health no record of our own yet **1** round NEA/ Amgen 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=aetion). ## Also claim to have backed them This firm lists Aetion 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. [Blue Lion](https://millionrounds.com/fund/blue-lion) VC firm Per its own site ## Quick answers about Aetion ### Who invested in Aetion? Aetion's investors include Lakestar, Flare Capital, New Enterprise Associates, B Capital and Foresite Capital, and 8 more on record. ### How much has Aetion raised? Aetion has raised $74M across 4 rounds since 2017. One round did not disclose an amount, so the total is a floor. ### When did Aetion last raise? Aetion's most recent round was a Venture in Feb 2025. ### What was Aetion's biggest round? Aetion's largest round on record is $36M (Series B), in Apr 2018. ### Who backed Aetion first? Aetion's first round on record, in Mar 2017, was backed by Lakestar and Flare Capital. ### What stage is Aetion at? Aetion's latest named round is a Venture, in Feb 2025. ### Where is Aetion based? Aetion is based in the United States. ## Companies like Aetion In the same sector, and raised in the last eighteen months. [**SpaceX** $42B · Oct 2026](https://millionrounds.com/company/spacex)[**STRIVE** $1.3B · Oct 2026](https://millionrounds.com/company/strive)[**Xona** $512M · Oct 2026](https://millionrounds.com/company/xona)[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app