HAX | Activity | F4

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HAX Activity

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

Types

Time range

3 investmentsShow all

Investment

HAX lists Cortisys as a pre-seed healthcare startup building automated multi-locus TMS neuromodulation for mental healthcare.

Cortisys

hax.co

Added recently

Investment

HAX lists Halltech B.V. as a HAX 2026 startup building thin-film deposition technology for next-generation semiconductors.

Halltech B.V.

Halltech B.V.HAX

Added recently

Investment

HAX lists Robotic Actuators Company as a HAX 2026 pre-seed hard-tech startup building digital hydraulic actuation for scalable mobile robots.

Robotic Actuators Company

Robotic Actuators Company HAX

Added recently

Essay

Published a HAX Plasma Forge thesis on plasma applications in semiconductor manufacturing and advanced materials.

Plasma Beyond Fusion: Powering Next Gen Semiconductor Manufacturing & Materials

hax.coMAY 1, 2026

MAY 1, 2026

Investment

Still Bright raised $18.5M seed round for copper purification via electrochemistry, replacing smelting process.

Still Bright

Still Bright HAX

Added recently

Investment

Cocoon raised $15M Series A for critical cement substitute.

Cocoon

hax.coMAR 18, 2026

MAR 18, 2026

Team Change

Avra van der Zee announced as SOSV General Partner supporting HAX.

Avra van der Zee, General Partner

hax.coMAR 2, 2026

MAR 2, 2026

Exit

Portfolio company VoltStorage sold to ESS Tech via asset sale.

VoltStorage

VoltStorageHAX

cbinsights.comFEB 18, 2026

FEB 18, 2026

News

Multiple HAX portfolio companies highlighted in Trump Administration's Project Vault critical minerals initiative.

HAX Portfolio in Trump Project Vault

hax.coFEB 3, 2026

FEB 3, 2026

Investment

XFuel raised $20M for low-carbon marine fuel technology.

Xfuel

hax.coJAN 27, 2026

JAN 27, 2026

Exit

Portfolio company Particle acquired by Digi International.

Particle

cbinsights.comJAN 27, 2026

JAN 27, 2026

Exit

HAX portfolio company Rightbot acquired by Amazon for robotics delivery innovation.

Rightbot

RightbotHAX

cbinsights.comJAN 7, 2026

JAN 7, 2026

New Fund

Launched HAX Plasma Forge in Princeton, NJ partnership with Princeton Plasma Physics Laboratory and NJEDA to support plasma technology startups.

HAX Plasma Forge

hax.coJUN 18, 2025

JUN 18, 2025