Aira

Stockholm, Sweden · Founded 2021 · Privately Held (backing)

Developer of clean energy systems designed to reduce carbon dioxide emissions from residential heating. Aira is based in Stockholm, Sweden and was founded in 2021. It was valued at $532 million at its Series B in Jan 2024, the last priced event on record. It has raised $659 million across 5 recorded rounds; the latest was a $175 million early-stage round in Aug 2025.

PMV mark · valuation
$532.0M
Oct 2026
Priced at
its Series B
Jan 2024
Total raised
$658.8M
Last round
Early Stage VC
Aug 2025
What is Aira worth?
$532.0MPrivateMarketView mark · Oct 2026

Valued at $532.0M at its Series B, Jan 2024. Nothing has traded since.

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Valuation timeline

1 priced round · 32 daily marks since · Jan 2024 – Oct 2026
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Series Brounds hold their value until the next priced eventMark, today
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Aira funding history

5 rounds
DateRoundRaisedPost-money
Aug 2025Early Stage VC$174.6M▮
Jun 2024Debt - General$216.6M▮
May 2024Non-Equity Accelerator—▮
Jan 2024Series B$228.9M▮
—Series A$38.7M▮
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Aira valuation

Aira was valued at $532 million at its Series B in Jan 2024. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has Aira raised?

Aira has raised $659 million across 5 recorded rounds since 2024. The largest was a $38.7 million Series A; the most recent was a $175 million early-stage round in Aug 2025. 1 of the rounds disclosed a post-money valuation.

How Aira'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 Aira, 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 Aira

What is Aira worth?
Aira is valued at $532.0M as of Oct 2026. Valued at $532.0M at its Series B, Jan 2024. Nothing has traded since.
How much has Aira raised?
Aira has raised $658.8M in total funding across 5 recorded rounds.
When did Aira last raise?
Aira last raised in Aug 2025 (Early Stage VC), raising $174.6M.