Magrathea Metals

Manufacturer of magnesium from seawater

placeSan Francisco, California, United States calendar_todayFounded 2022 groups15 employees language magratheametals.com

Registered entities

Social engagement

Social engagement: 6.9K social following, 6 posts in the last 12 months — below the industry typical range.

Investor mix

25 investors on record; lead investors include VoLo Earth Ventures, Capricorn, Balerion Space Ventures.

Investor typeCountShare
Venture capital1248%
Private equity312%
Other / undisclosed1040%

Recent activity

23 Jun 2026
Partnership
TETRA Technologies
2 Jun 2026
Partnership
Magrathea
Coming soon