United States · Growth startup
2 rounds we have observed, with the 29 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Raised 3 months ago
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Funding summaryUpdated 5 Nov 2026
$365Mraised across 2 rounds since 2026, from 4 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Founders Fund
Portland Seed Fund
Lowercarbon Capital
Compound
Leblon Capital
Sozo Ventures
Gigascale Capital
Nimble Partners
Future Positive
Supermicro
Time Ventures
Unless
Fortescue Ventures
Planetary Venture Capital
Resilience Reserve
Susquehanna Sustainable Investments (SSI)
WTI Capital
WovenEarthReported by TechStartups and 2 others
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
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These 12 firms list Panthalassa as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Panthalassa's investors include Peter Thiel, Hanwha Asset Management, 8090 Industries, Founders Fund and Portland Seed Fund, and 24 more on record. Hanwha Asset Management led its latest round.
Panthalassa has raised $365M across 2 rounds since 2026.
Panthalassa's most recent round was a Growth of $225M in Aug 2026, led by Hanwha Asset Management.
Its most recent round, $225M in Aug 2026, is also its largest on record.
Panthalassa's first round on record, in May 2026, was backed by Peter Thiel, Founders Fund and Portland Seed Fund and 24 others.
Panthalassa's latest named round is a Growth, in Aug 2026.
Panthalassa is based in the United States.
Peter Thiel led the Growth in 2026; Hanwha Asset Management led the Growth in 2026.
In the same sector, and raised in the last eighteen months.
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United States · 
