Fine Structure Ventures | Activity | F4

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F4/Fine Structure Ventures/Activity

Fine Structure Ventures Activity

Every public signal F4 has attached to this firm, with sources and cross-entity links.

Types

Time range

Milestone

Portfolio company Commonwealth Fusion Systems raised $1B, bringing total capital to roughly $4B, to build its first commercial fusion power plant.

Commonwealth Fusion Systems

Commonwealth Fusion Systems Fine Structure Ventures

techcrunch.comJUL 30, 2026

JUL 30, 2026

3 investments· DEC 2025 – JUN 2026Show all

Investment

Led BoolSi's $6M seed round to build a compiler that turns ordinary code into custom silicon accelerators.

BoolSi

BoolSi Fine Structure Ventures

finsmes.comJUN 2026

JUN 2026

Investment

Participated in DG Matrix's $60M Series A, led by Engine Ventures, for AI-era data center power infrastructure.

DG Matrix

DG Matrix Fine Structure Ventures

techcrunch.comFEB 18, 2026

FEB 18, 2026

Investment

Led pH7 Technologies' $25.6M Series B to scale critical metals extraction technology.

pH7 Technologies

pH7 Technologies Fine Structure Ventures

businesswire.comDEC 4, 2025

DEC 4, 2025