Castle Fund

The rounds this investor is named on, who it invests beside, and where it shows up.

Named on one round in the feed.

Seed fund for deep tech with strong IP

Venture capitalcastle-fund.comSince 2026-09-25

ROUNDS

joined, none as lead

ROUNDS JOINED · USD

$4.3M

across 1 round

LATEST ROUND

Seed ext. · $4.3M · 2026-09-25

CO-INVESTORS

named beside it

Rounds

The rounds this investor is named on, who it invests beside, and where it shows up.

A fabless semiconductor company building battery intelligence infrastructure for compute-intensive, battery-powered devices

Seed ext.$4.3M2026-09-2510

Company	Round	Amount	Announced	Role
Overlord Labs A fabless semiconductor company building battery intelligence infrastructure for compute-intensive, battery-powered devices	Seed ext. Verified against 1 of 10 sources	$4.3M	2026-09-25	[ PART ]