Fund profile

Third Sphere: investment profile

Published mandate, cheque sizes and source evidence for Third Sphere. Sources checked 2026-10-12.

By 12inf EditorialUpdated
Stage
Pre-seed, Seed
Cheque
$250K–$1M
Geography
US
On this page

Early-stage climate and sustainability investor aiming to be among a company's first investors at pre-seed and seed, with $250K-$1M initial checks and follow-ons for companies proving the thesis; promotes 'seedstrapping' with minimal equity.

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Your company

Stage · sector · market

Stage fit
Sector fit
Market fit

Published mandate

  • Stage: Pre-seed, Seed

  • Cheque: $250K–$1M

  • Geography: US

  • Sectors: Climate

Evidence for every match

Know why a fund fits before you write

Each match shows the fund's stated mandate, cheque size and dated recent deals, with links to the sources.

Notable investments

Sources

Sources checked 2026-10-12.

Launch plan

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01 / FitWhy they fit

Stage, sector and geography compared with your company.

Investor profile
SSeedcampPre-seed · Europe
Investment focus

Backs technology founders from pre-product through early revenue

Sources

Investment approach · FAQ

Focus

Sector agnostic

02 / EvidenceCheck the evidence

Sources and open questions stay visible alongside the fit.

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How we research investors

Raise plan

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Everything in Launch, plus help with the first email and the first call.

  • Deck review
  • First emails built on each investor's recent deals
  • Meeting prep, phone numbers and CSV export
See Raise or see three matches first
Raise plan

From shortlist to first meeting

Everything in Launch, plus help with the first email and the first call.

  • Deck review
  • First emails built on each investor's recent deals
  • Meeting prep, phone numbers and CSV export
See Raise or see three matches first
01 / ResearchCompany brief

Your product, stage and market

02 / ResearchInvestor evidence

Published mandate and sources

03 / ResearchYour shortlist

Fit reasons and open questions