# ION Storage Systems funding: rounds and investors > ION Storage Systems has raised $35M across 3 rounds since 2024. Investors include Alumni Ventures, TEDCO and Toyota Ventures. Every round with its source. Source: https://millionrounds.com/company/ion-storage-systems (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *ION Storage Systems* 3 rounds we have observed, with the 8 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. Aerospace & Space Energy Manufacturing Raised 5 months ago Funding summary Updated 26 Oct 2026 **$35M** raised across 3 rounds since 2024, from 3 sources **$23M** Round **$10M** Debt **$2.0M** Venture - **Latest round:** Venture, $2.0M Jun 2026 - **Biggest round:** $23M Round · Aug 2024 - **Investors:** 8 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. 2025 2026 **$23M** Round **$10M** Debt **$2.0M** Venture - **First round:** Round, $23M - **Biggest round:** $23M - **Usual gap between rounds:** 19 months ## The rounds - **Jun 2026** Venture **$2.0M** *1 new* *3 returning* [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [US Department of Energy](https://millionrounds.com/fund/u-s-department-of-energy) [TEDCO](https://millionrounds.com/fund/tedco) [Toyota Ventures](https://millionrounds.com/fund/toyota-ventures) Source recorded - **Nov 2024** Debt **$10M** *4 new* [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [TEDCO](https://millionrounds.com/fund/tedco) [Toyota Ventures](https://millionrounds.com/fund/toyota-ventures) [Leonid Capital Partners](https://millionrounds.com/fund/leonid-capital-partners) Source recorded - **Aug 2024** Round **$23M** *3 new* [Maryland Technology Development Corporation](https://millionrounds.com/fund/maryland-technology-development-corporation) [Build Our Future Grant Pilot Program](https://millionrounds.com/fund/build-our-future-grant-pilot-program) [U.S. Department of Energy's Advanced Research Projects Agency-Energy (ARPA-E)](https://millionrounds.com/fund/u-s-department-of-energy-s-advanced-research-projects-agency) Reported by Firms' own news pages ## Founders and team From ION Storage Systems's own website: 2 founders, 6 on the team. **Dr. Greg Hitz** Chief Technical Officer & Founder **Dr. Eric Wachsman** Executive Chair & Founder - **Jorge Diaz Schneider** Chief Executive Officer - **Ravi Abbineni** Chief Financial Officer - **Dr. Elizabeth Santori** Board Members - **Dr. Joseph Goodman** Director - **Mark Fields** Director - **Todd Crescenzo** Chairman ## 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. **Round** 2024 **Debt** 2024 **Venture** 2026 [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [TEDCO](https://millionrounds.com/fund/tedco) [Toyota Ventures](https://millionrounds.com/fund/toyota-ventures) [US Department of Energy](https://millionrounds.com/fund/u-s-department-of-energy) [Leonid Capital Partners](https://millionrounds.com/fund/leonid-capital-partners) [Maryland Technology Development Corporation](https://millionrounds.com/fund/maryland-technology-development-corporation) [Build Our Future Grant Pilot Program](https://millionrounds.com/fund/build-our-future-grant-pilot-program) [U.S. Department of Energy's Advanced Research Projects Agency-Energy (ARPA-E)](https://millionrounds.com/fund/u-s-department-of-energy-s-advanced-research-projects-agency) ## Everyone who backed them [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **2** rounds [TEDCO](https://millionrounds.com/fund/tedco) VC firm **2** rounds [Toyota Ventures](https://millionrounds.com/fund/toyota-ventures) VC firm **2** rounds [US Department of Energy](https://millionrounds.com/fund/u-s-department-of-energy) Government **1** round [Leonid Capital Partners](https://millionrounds.com/fund/leonid-capital-partners) Private credit **1** round [Maryland Technology Development Corporation](https://millionrounds.com/fund/maryland-technology-development-corporation) VC firm **1** round [Build Our Future Grant Pilot Program](https://millionrounds.com/fund/build-our-future-grant-pilot-program) Investment firm **1** round [U.S. Department of Energy's Advanced Research Projects Agency-Energy (ARPA-E)](https://millionrounds.com/fund/u-s-department-of-energy-s-advanced-research-projects-agency) Investment firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=ion-storage-systems). ## Also claim to have backed them These 2 firms list ION Storage Systems as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Volo Earth Ventures](https://millionrounds.com/fund/volo-earth-ventures) VC firm Per its own site [Z2Sixty Ventures](https://millionrounds.com/fund/z2sixty-ventures) VC firm Per its own site ## Quick answers about ION Storage Systems ### Who invested in ION Storage Systems? ION Storage Systems's investors include Alumni Ventures, TEDCO, Toyota Ventures, US Department of Energy and Leonid Capital Partners, and 3 more on record. ### How much has ION Storage Systems raised? ION Storage Systems has raised $35M across 3 rounds since 2024. ### When did ION Storage Systems last raise? ION Storage Systems's most recent round was a Venture of $2.0M in Jun 2026. ### What was ION Storage Systems's biggest round? ION Storage Systems's largest round on record is $23M (Undisclosed round), in Aug 2024. ### Who backed ION Storage Systems first? ION Storage Systems's first round on record, in Aug 2024, was backed by Maryland Technology Development Corporation, Build Our Future Grant Pilot Program and U.S. Department of Energy's Advanced Research Projects Agency-Energy (ARPA-E). ### What stage is ION Storage Systems at? ION Storage Systems's latest named round is a Venture, in Jun 2026. ### Where is ION Storage Systems based? ION Storage Systems is based in the United States. ## Companies like ION Storage Systems In the same sector, and raised in the last eighteen months. 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