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
What is Alta Resource Technologies worth?
$107.5MPrivateMarketView mark · Oct 2026

Valued at $107.5M at its early-stage round, Dec 2025. Nothing has traded since.

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Valuation timeline

0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026
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Markrounds hold their value until the next priced eventMark, today
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Alta Resource Technologies funding history

2 rounds
DateRoundRaisedPost-money
Oct 2025Early Stage VC$28.4M▮
Mar 2024Seed Round$4.5M▮
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Alta Resource Technologies valuation

Alta Resource Technologies was valued at $108 million at its early-stage round in Dec 2025. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

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).

How Alta Resource Technologies's valuation is determined

Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.

For Alta Resource Technologies, the most current credible signal sets the number and the older ones confirm it: a live secondary-market price first, then three or more recent prints, then institutional fund marks, and otherwise the last priced round, which never decays. The valuation is the last round’s post-money moved by the price change since that round, so no share count is assumed. Today it is set by its last priced round. Question about this number? Full methodology →

Frequently asked about Alta Resource Technologies

What is Alta Resource Technologies worth?
Alta Resource Technologies is valued at $107.5M as of Oct 2026. Valued at $107.5M at its early-stage round, Dec 2025. Nothing has traded since.
How much has Alta Resource Technologies raised?
Alta Resource Technologies has raised $38.4M in total funding across 2 recorded rounds.
When did Alta Resource Technologies last raise?
Alta Resource Technologies last raised in Oct 2025 (Early Stage VC), raising $28.4M.