Overview
News
Salaries
Products
People
Growth
Offices
Financials

Funding and backers

Total raised
$2M
1 round on record
Latest round
$2M
Convertible Note · Mar 2022 · 4 yr ago
Team
16
US Form 5500 (plan participants) · Dec 2025 · -20% in a year
Hiring now
1
+1 posted in 30 days
Revenue
$1M
2021 · SEC Form D 0001918019-22-000001
Backers
1
Compound
The money's age
Long since its last round
54 months since the last round · and hiring
Momentum
13/100
hiring for its size
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Mar 2, 2022 Raised a round Convertible Note $2M · SEC Form D 2022 Founded
Tractionpublic signals, read monthly
Hacker News stories
1
best: 80 points
Funding rounds
RoundDateAmountInvestorsSource
Convertible Note Mar 2022 $2M — SEC Form D
Registers and programsofficial lists and records that name the company
Legal entity Magrathea Metals Inc. SEC Form D
Founders and leadersfrom filings, registers and the company's site
Alexander GrantExecutive OfficerSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
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Overview

Magrathea is rebuilding Western magnesium production with breakthrough electrolytic technology. $100M+ backed to end China's 95% supply dominance.

News

News YahooFinance 9 months ago
TETRA TECHNOLOGIES, INC. AND MAGRATHEA METALS, INC. ADVANCE JOINT VENTURE PLANS TO PRODUCE MAGNESIUM IN ARKANSAS
TETRA Technologies, Inc. ("TETRA" or the "Company") (NYSE:TTI) announced today that it has signed a term sheet outlining key parameters to form a joint venture with Magrathea Metals, Inc. (a private company developing innovative technology for producing c
Read more
Report
News markets.ft.com 9 months ago
- Company Announcement - FT.com
The latest company information, including net asset values, performance, holding & sectors weighting, changes in voting rights, and directors and dealings.
Read more
Report

People

Alexander Grant
Executive Officer
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data

Growth

Hiring Momentum
53/100
Stable
Open positions
1
1 opened / 0 closed in 30 days
ATS activity
Every ~5 hours
09/28/2026
Hiring Dynamics 0%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Finance
100% ▲

Offices

Where the company hires and what each office is for
Cities
2
Hiring now
1
Countries
1
Busiest office
Oakland
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Headquarters Builds here Office with open vacancies No open vacancies right now Tap a pin for the office
San Francisco United States
HQ
Oakland United States
Regional office
Oakland, CA
1 open roles 1 posted in 90 days 10-50 est. staff $150k Avg Salary
hires for Finance
seen since Sep 2026 careers board, job postings

Financials

Est. Annual Revenue
$500k
2021
Total raised
$2M
Latest round
Convertible Note
Funding rounds
1
Funding rounds
Round Announced Amount
Convertible Note 2022 $2M Details