Who has invested in Iontra?

Volta Energy Technologies, ARPA-E, Riverstone Holdings, Flag Group, Flag Asset Management are named among the investors backing Iontra.

Iontra Funding: $138M Raised, Series C (2024)

Iontra funding overview

Iontra is a Climate company based in Centennial, Colorado. Iontra has raised $138M in total disclosed funding. That places its disclosed total in the $100M–$250M range. Its most recent disclosed round is a Series C announced in November 2024. The round record for Iontra runs through 2024; nothing later has been disclosed. Investors on record include Volta Energy Technologies, ARPA-E, Riverstone Holdings, Flag Group, Flag Asset Management. 5 distinct backers are named across the disclosed rounds.

Iontra at a glance

Total raised: $138M
Latest round: Series C
Latest round date: November 2024
Industry: Climate
Headquarters: Centennial, Colorado
Notable investors: Volta Energy Technologies, ARPA-E, Riverstone Holdings, Flag Group, Flag Asset Management

Frequently asked about Iontra funding

How much has Iontra raised?: Iontra has raised $138M in total disclosed funding across the rounds on record.
Who has invested in Iontra?: Volta Energy Technologies, ARPA-E, Riverstone Holdings, Flag Group, Flag Asset Management are named among the investors backing Iontra.
What was the latest Iontra funding round?: The most recent disclosed round is a Series C, announced in November 2024.
Where is Iontra based?: Iontra is based in Centennial, Colorado.
What sector does Iontra operate in?: Iontra is tracked under Climate from Centennial, Colorado, with $138M in disclosed funding.
When did Iontra last raise?: The last disclosed Iontra round closed in November 2024 at Series C.

Every Iontra figure above comes from filings and announced rounds in the StartupFundraising company database and is revised as new rounds are recorded. The lists below compare Climate companies in Centennial at a similar stage.

Iontra Funding: $138M Raised, Series C (2024)

Iontra funding overview

Iontra at a glance

Frequently asked about Iontra funding

Iontra founders (1)

Companies related to Iontra (24)

Browse related funding lists (3)