Alta Resource Technologies

Boulder, CO · Founded 2023 · Privately Held (backing)

Developer of a refining technology designed for the extraction of critical minerals from a diversity of feedstocks. Alta Resource Technologies is based in Boulder, CO and was founded in 2023. It was valued at $108 million at its early-stage round in Dec 2025, the last priced event on record. It has raised $38.4 million across 2 recorded rounds; the latest was a $28.4 million early-stage round in Oct 2025.

PMV mark · valuation
$107.5M
Oct 2026
Priced at
its early-stage round
Dec 2025
Total raised
$38.4M
Last round
Early Stage VC
Oct 2025
How much has Alta Resource Technologies raised?
$38.4Macross 2 recorded rounds · Mar 2024 – Oct 2025

Most recently, Alta Resource Technologies raised $28.4M in its Early Stage VC (Oct 2025).

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Alta Resource Technologies round by round

2 rounds
Oct 2025Early Stage VC$28.4MSEC filing▮
17 investors participated
Mar 2024Seed Round$4.5MSEC filing▮
6 investors participated

How much has Alta Resource Technologies raised?

Alta Resource Technologies has raised $38.4 million across 2 recorded rounds since 2024. The largest was a $4.5 million seed round in Mar 2024; the most recent was a $28.4 million early-stage round in Oct 2025.

Alta Resource Technologies has filed 1 Form D with the SEC, most recently in Apr 2024 ($4.5 million sold to 6 investors).

Alta Resource Technologies investors

11 investors are on record for Alta Resource Technologies, including Climate Capital, In-Q-Tel, DCVC and Baruch Future Ventures. By type, the record holds 4 venture capital firms, 1 family office and 1 fund of funds. The early-stage round in Oct 2025 drew 17 investors.

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Frequently asked about Alta Resource Technologies

How much has Alta Resource Technologies raised?
Alta Resource Technologies has raised $38.4M in total across 2 recorded funding rounds.
When was Alta Resource Technologies's last funding round?
Alta Resource Technologies's most recent recorded round was Early Stage VC in Oct 2025, raising $28.4M.