# MJOLNIR SPACEWORKS

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/mjolnir-spaceworks

- Industry: Aerospace
- Headquarters: Sapporo, Japan
- Website: www.mjolnir-sw.com
- Total disclosed funding: $8.5M
- Latest round: Series B (May 29, 2026)
- Investors on record: 6

## About

Based in Hokkaido, Japan, and founded in 2020 by CEO Vikoa Tor, MJOLNIR SPACEWORKS Co., Ltd. is a manufacturer of hybrid rocket engine systems that perform research on satellite and rocket engines and lightweight tanks that can be mass-produced at low cost.
 
MJOLNIR SPACEWORKS Co., Ltd. offers a hybrid rocket engine and an unwelded tank. The company uses a method of obtaining propulsion by burning plastic fuel and liquid oxygen. Hybrid engines use plastic, which is less flammable than liquid hydrogen, as fuel, reducing the risk of fire and explosion. In addition, the company manufactures different varieties and sizes of tanks, ranging from 5 Litres to 250 litres, without using welding methods, which are easy to clean and maintain.

## Funding rounds

- Series B, May 29, 2026, $7.5M — SPARX Group, Incubate Fund, Z Venture Capital, JIC Venture Growth Investments
- Series A, Dec 24, 2024 — Mitsubishi UFJ Capital, Incubate Fund, UntroD Capital
- Seed, Jul 5, 2023, $1M — Incubate Fund, UntroD Capital

## Investors

- Incubate Fund (https://capitalatlas.ai/funds/incubate-fund) — Seed, Series A, Series B
- UntroD Capital — Seed, Series A
- Mitsubishi UFJ Capital (https://capitalatlas.ai/funds/mitsubishi-ufj-capital) — Series A
- SPARX Group (https://capitalatlas.ai/funds/sparx-group) — Series B
- Z Venture Capital (https://capitalatlas.ai/funds/z-venture-capital) — Series B
- JIC Venture Growth Investments (https://capitalatlas.ai/funds/jic-venture-growth-investments) — Series B