Primary Venture Partners

Etched

Announcing Etched's Series C, led by Sequoia at $10.3B

HAANs: Hardware-Activated Agent Networks

Jason Shuman

Tokaido Health

Tokaido Health raises $25M

Etched

Why we invested in Etched in every round

The Energy Flexibility Stack: How Data Centers That Bend Get Power Faster

Zach Fredericks

Implementations are the edge

Emily Man

Tabs

The AI-native revenue platform for modern finance

Introducing The Compute 100

Brian Schechter

Eos

Eos: identity security for the agentic era

Scaling for the AI era: Fund V

Brad Svrluga

The Biological Computing Co

The Biological Computing Company raises $25M Seed

We back founders building things the world hasn't seen yet, at the moment before the world believes.

Our portfolio

We go above and beyond  to help founders turn impossible ideas into something extraordinary.

Our people

We combine deep sector specialization with a 60+ person operating team that delivers real work.

Our approach

In service to founders turning impossible ideas into extraordinary companies

Primary is a specialized and scaled seed fund designed to actually deliver.