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Antares Nuclear, Inc.

Redondo Beach, CA · Founded 2023
LAST FUNDING
$78.6M
Series C

Factory-produced, deployable fission microreactors to provide strategic energy for mission-critical systems across Earth, space, and underseas.

Funding history

RoundAmount
Series C$78.6M
SEC Form D filed
Aug 18, 2026·Jul 28, 2026·Sep 19, 2025·Oct 9, 2024·Oct 30, 2023

About Antares Nuclear, Inc.

How much funding has Antares Nuclear, Inc. raised?

Antares Nuclear, Inc. has raised $78.6M in total funding. The most recent round was Series C.

Where is Antares Nuclear, Inc. headquartered?

Antares Nuclear, Inc. is headquartered in Redondo Beach, CA.

What does Antares Nuclear, Inc. do?

Factory-produced, deployable fission microreactors to provide strategic energy for mission-critical systems across Earth, space, and underseas.

What problem does Antares Nuclear, Inc. solve?

Defense-critical assets on Earth, in space, and underwater need strategic, mission-capable power that current energy infrastructure isn't built to deliver.

What's Antares Nuclear, Inc.'s solution?

Antares designs and manufactures modular, transportable fission microreactors (100kWe-1MWe, rated for 6+ years) with a simple, reliability-optimized design and a vertically integrated in-house supply chain.

What makes Antares Nuclear, Inc. different?

The company states it was the first in the country to receive an approved Nuclear Safety Design Agreement (NSDA), the first U.S. microreactor to receive a HALEU fuel allocation, and it was selected for the Army's Janus Program at Fort Bragg.

Leadership

Executive Officer, Director, Promoter
LinkedIn ↗
Executive Officer, Director, Promoter
LinkedIn ↗
Jack Altman
Director
Alexander Hartz
Director
Industry
Industrials
Founded
2023
HQ
Redondo Beach, CA
Raised
$78.6M
Stage
Series C
❝ Cite this page

Free to use in articles, research, and reference works. Stable URL, will not change. Data on this page last updated September 3, 2026.

MLA
"Antares Nuclear, Inc.: Funding & Investors." SoCal.Startups, September 3, 2026, https://socalstartups.io/companies/antares-nuclear-inc. Accessed September 29, 2026.
APA
SoCal.Startups. (2026). Antares Nuclear, Inc.: Funding & Investors. Retrieved September 29, 2026, from https://socalstartups.io/companies/antares-nuclear-inc
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