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Washington Harbour Partners

Activity from announced rounds

Activity in this selectionUnited States · Oct 16, 2026 · Jul 19, 2026

Washington Harbour Partners is the investment firm whose official portfolio identifies Hadrian, Mariana Minerals and Stoke Space.

Recorded funding activity

Hadrian develops automated factories. Mariana develops AI-supported mining and refining, while Stoke develops reusable rockets. Their company histories preserve distinct physical-production and transport technologies.

Sources
Rounds participated in
4
Confirmed lead rounds
0
3 roles undisclosed
New companies
2
First participation on record · 2 follow-on
Funding in participating rounds
$2.7B
4 disclosed · full round size, not this investor’s share

By stage

Series C+2
Series B1
Undisclosed1

By primary sector

Space tech2
Defense tech1
Industrial tech1

By country

United States4

Rounds

4 in this selection
Stoke Space Technologies

Stoke Space develops Nova rockets with reusable first and second stages for commercial and government launch customers.

$1BSeries E initial closing
Participant
Hadrian

Builds highly automated factories producing defense and aerospace systems

$1.4BSeries D
Role not disclosed
Mariana Minerals

Builds and operates AI-driven mines and refineries for critical minerals

$310MSeries B
Role not disclosed
Array Labs

Building a new way to understand the physical world

$21MStrategic
Role not disclosed