Defined VC | Activity | F4

Introducing F4 Champions, a new accelerator for founders at the earliest stage.F4 Champions for early-stage foundersEnrollment closesAugust 2Learn more

Team Portfolio Raise Champions Essays

F4/Defined VC/Activity

Defined VC Activity

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

Types

Time range

Milestone

Portfolio company Zyphra launched Zyphra Cloud, an AMD-powered AI platform with serverless inference for open-weight models.

Zyphra

Zyphra Defined VC

definedvc.comMAY 21, 2026

zyphra.com

MAY 21, 2026

Exit

Portfolio company Nexera Robotics was acquired by Locus Robotics to expand autonomous mobile manipulation capabilities.

Nexera

Nexera Defined VC

definedvc.comMAY 21, 2026

locusrobotics.com

MAY 21, 2026

Investment

Participated in Ranger AI's $8.4M seed round for an agentic industrial tendering platform.

Ranger AI

Ranger AI Defined VC

linkedin.comMAY 14, 2026

MAY 14, 2026

Investment

Participated in Variational AI's $5.5M Seed extension for Enki™, a foundation model for small molecule drug discovery.

Variational AI

Variational AI Defined VC

variational.aiFEB 20, 2025

FEB 20, 2025