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Prefix Capital

Prefix Capital

San Francisco, Californiaprefixcapital.com

Overview

Prefix Capital is a venture capital firm based in San Francisco, California. It focuses on early-stage investments in foundational, deep-tech companies . The firm typically participates in Seed and Series A rounds, with occasional involvement in later stages . Their investment strategy centers on transformative technologies across various sectors .

Year Founded

2019

Portfolio Companies

8

Investments

CompanyDateStageLead
Neutrolis IncFeb 2025VC RoundCo-investor
Aligned CarbonSep 2023SeedCo-investor
Symmetry SystemsAug 2023Series BLead
Base OperationsDec 2021SeedCo-investor
Neutrolis IncDec 2021Series ACo-investor
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Key People

Byron Alsberg

Co-founder Managing Partner

Sector & Stage Mix

Industry, funding stage, and valuation band breakdowns.

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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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Firmographic Details

HeadquartersSan Francisco, California
Year Founded2019

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