Fundraising Fox

LongRun Capital

Family office

Stockholm · Seed–Series A · 4 people tracked

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Investment thesis

LongRun Capital backs early-stage companies developing groundbreaking technical solutions to address the climate crisis within the built environment, concentrating on advanced materials and energy. It seeks ventures with high climate impact combined with strong financial return potential, a focus on Nordic companies with global reach, and diverse teams or clear ambitions toward greater diversity. The firm invests from seed to Series A with typical tickets of SEK 5-20 million, targeting ownership stakes of 10-20%.

Source: firm website, verified Aug 3, 2026.

Stage
Seed–Series A
Check
$500K – $2M
HQ
Stockholm, SE
Instruments
Equity
Founded
2021
Tracked investments
6

Team · 4 people

from the firm's website

Investments · 6 tracked

founders shown can be your intro path
3eflow3eflow.com

Develops smart tap water systems that reduce energy consumption by 50%, prevent Legionella bacteria growth, and provide rapid hot water delivery.

Druppsdrupps.comin

Makes businesses realize the potential in airborne water to reduce water needs and increase climate change resilience.

Ekolutionekolution.se

Develops carbon-negative building materials, including hemp-based insulation and prefabricated panels, for sustainable and energy-efficient construction.

Greenirongreeniron.sein
Noda Intelligent Systems ABnoda.sein

Optimizes energy systems through innovative artificial intelligence software within the energy sector.

Nsswaternsswater.comin

Frequently asked questions

What stage does LongRun Capital invest at?
LongRun Capital invests at the Seed, Series A stages.
What is LongRun Capital's typical check size?
LongRun Capital typically writes checks of $500K – $2M.
What sectors does LongRun Capital focus on?
LongRun Capital focuses on Cleantech, Climate Tech, Construction Tech, Energy, Impact & Social Good, New Materials, PropTech.
Where is LongRun Capital located?
LongRun Capital is headquartered in Stockholm, SE.

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