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Propeller

Propeller

Boston, Massachusettspropellervc.com

Overview

Propeller is a climate-tech venture capital fund founded in 2022 that invests in and builds ocean-climate companies. It focuses on pre-seed to Series A companies using science and technology to address the climate crisis, with investment themes of Ocean Carbon, Ocean Organics, and Ocean Industrials.

Portfolio Companies

12

Investments

CompanyDateStageLead
pHathom TechnologiesFeb 2026SeedLead
pHathom TechnologiesJan 2026SeedLead
Vatn SystemsDec 2025Series ACo-investor
CipheroDec 2025Pre SeedCo-investor
SuperGroundSep 2025SeedLead
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Key People

Brian Halligan

Co-Founder & Partner

Sector & Stage Mix

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SeedSeries ASeries BGrowth

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Investment Activity

Yearly cadence, pace, and funding raised over time.

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2021
2022
2023
2024
2025
2026

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FAQ

Firmographic Details

HeadquartersBoston, Massachusetts
Year FoundedN/A

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