United States · Venture startup

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 & SpaceEnergyManufacturing

Raised 5 months ago

Funding summaryUpdated 26 Oct 2026

$35Mraised across 3 rounds since 2024, from 3 sources

$23MRound$10MDebt$2.0MVenture
Latest round
Venture, $2.0MJun 2026
Biggest round
$23MRound · 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.

20252026
$23MRound$10MDebt$2.0MVenture
First round
Round, $23M
Aug 2024
Biggest round
$23M
Round · Aug 2024
Usual gap between rounds
19 months
the median of 2

The rounds

  1. Jun 2026
    Venture$2.0M1 new3 returning

    Source recorded

  2. Nov 2024
    Debt$10M4 new

    Source recorded

  3. Aug 2024
    Round$23M3 new

    Reported by Firms' own news pages

Founders and team

From ION Storage Systems's own website: 2 founders, 6 on the team.

Dr. Greg HitzChief Technical Officer & Founder
Dr. Eric WachsmanExecutive Chair & Founder
  • Jorge Diaz SchneiderChief Executive Officer
  • Ravi AbbineniChief Financial Officer
  • Dr. Elizabeth SantoriBoard Members
  • Dr. Joseph GoodmanDirector
  • Mark FieldsDirector
  • Todd CrescenzoChairman

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.

Round2024Debt2024Venture2026Alumni VenturesTEDCOToyota VenturesUS Department of EnergyLeonid Capital PartnersMaryland Technology Development CorporationBuild Our Future Grant Pilot ProgramU.S. Department of Energy's Advanced Research Projects Agency-Energy (ARPA-E)

Everyone who backed them

Alumni VenturesVC firm2rounds
TEDCOVC firm2rounds
Toyota VenturesVC firm2rounds
US Department of EnergyGovernment1round
Leonid Capital PartnersPrivate credit1round
Maryland Technology Development CorporationVC firm1round
Build Our Future Grant Pilot ProgramInvestment firm1round
U.S. Department of Energy's Advanced Research Projects Agency-Energy (ARPA-E)Investment firm1round

Missing a round, or an investor who was in one? Tell us.

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 VenturesVC firmPer its own site
Z2Sixty VenturesVC firmPer 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.

SpaceX$42B · Oct 2026Amogy$125M · Oct 2026Apex$1.1B · Oct 2026LanzaJet$67M · Oct 2026Xona$512M · Oct 2026Pivot Energy$500M · Oct 2026

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