Realta Fusion

Madison, WI · Founded 2022 · Privately Held (backing)

Operator of an energy company intended to produce industrial heat and power from fusion energy. Realta Fusion is based in Madison, WI and was founded in 2022. It was valued at $106 million at its early-stage round in May 2025, the last priced event on record. It has raised $54 million across 2 recorded rounds; the latest was a $35.5 million early-stage round in May 2025.

PMV mark · valuation
$105.5M
Oct 2026
Priced at
its early-stage round
May 2025
Total raised
$54.0M
Last round
Early Stage VC
May 2025
What is Realta Fusion worth?
$105.5MPrivateMarketView mark · Oct 2026

Valued at $105.5M at its early-stage round, May 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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Realta Fusion funding history

2 rounds
DateRoundRaisedPost-money
May 2025Early Stage VC$35.5M▮
May 2023Early Stage VC$9.0M▮
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Realta Fusion valuation

Realta Fusion was valued at $106 million at its early-stage round in May 2025. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has Realta Fusion raised?

Realta Fusion has raised $54 million across 2 recorded rounds since 2023. The largest was a $9 million early-stage round in May 2023; the most recent was a $35.5 million early-stage round in May 2025.

Realta Fusion has filed 2 Form Ds with the SEC since 2023, most recently in May 2025 ($35.5 million sold to 15 investors).

How Realta Fusion'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 Realta Fusion, 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 Realta Fusion

What is Realta Fusion worth?
Realta Fusion is valued at $105.5M as of Oct 2026. Valued at $105.5M at its early-stage round, May 2025. Nothing has traded since.
How much has Realta Fusion raised?
Realta Fusion has raised $54.0M in total funding across 2 recorded rounds.
When did Realta Fusion last raise?
Realta Fusion last raised in May 2025 (Early Stage VC), raising $35.5M.