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USA · Private · antaresindustries.com
Microreactor
Open roles
87
▼ 5 since 2026-10-30
Federal awards
$13M
9 grants, contracts, loans
Last private raise
$60M
Form D · 2026-08-03
SEC filings
5
latest 2026-08-18
Coming up
POLICYRussian uranium import ban: waiver period
DOE can grant waivers for Russian enriched uranium until Jan 1, 2028; after that the ban is absolute. Affects Fission.
+ THESISPOLICY45Y / 48E: all other clean power and storage
Full credit for projects beginning construction through 2033; 75% for 2034 starts, 50% for 2035, none from 2036. Affects Fission.
+ THESISHIRING87 open roles (-5 since Oct 30, 2026)
Biggest teams: Reactor Hardware Engineering 29, Manufacturing & Quality 19, Internships 11, Space 7.
+ THESISCONTRACTAntares, Last Energy, and Radiant hit DOE authorization milestones
ANS Nuclear Newswire: The month of October saw three of the original Reactor Pilot Program companies hit a handful of milestones as each pursues Department of Energy authorization for the operation of various reactor projects. Both Last Energy and Radiant earned documented safety analyses (DSAs) for t…
ans.org →+ THESISCONTRACTAntares signs TRISO fuel procurement deal with BWXT
The commercial agreement covers an initial tonne of TRISO fuel for Antares microreactors, with quantities that could grow as deployment needs evolve. It follows DOE approval of the Nuclear Safety Design Agreement for the Mark-1 reactor.
world-nuclear-news.org →+ THESISPOLICYDOE Energy Dominance Financing: Constellation and Alliant
Up to $5B conditional loan to Constellation for nuclear uprates (~1.1 GW) and a closed $5.1B loan to Alliant for gas, storage and upgrades (~2.6 GW). The office (formerly the Loan Programs Office) has over $300B of authority. Affects Fission.
+ THESISPOLICYDOE adds helium to the Critical Material List
DOE added helium to its Critical Material List, citing semiconductors, natural-gas leak testing and quantum computing. Helium also cools fusion magnets and high-temperature gas reactors. Affects Fission.
+ THESISCONTRACTBWXT Announces Contract with Antares for TRISO Nuclear Fuel Production
Business Wire (energy)
news.google.com →+ THESISCONTRACTAntares Secures BWXT Fuel Agreement, Advances DOE Review for Electricity-Producing Mark-1
POWER Magazine: Antares Nuclear has secured a multi-year agreement with BWX Technologies (BWXT) for advanced nuclear fuel fabrication and received initial Department of Energy (DOE) safety approval for its Mark-1 microreactor, advancing two key requirements for the company’s planned transition f…
powermag.com →+ THESISREGULATORYDOE approves Nuclear Safety Design Agreement for Antares Mark-1 reactor
The DOE cleared a key safety step for Antares' first electricity-producing microreactor, clearing the way for construction and testing at Idaho National Laboratory. Full-power electricity testing is planned for 2027 over six months.
interestingengineering.com →+ THESISFEDERAL AWARDNational Aeronautics and Space Administration contract$1.2M
Nasa's 2025 sbir phase ii
usaspending.gov →+ THESISProofMicroreactor reached zero-power criticality under the DOE pilot programJun 30, 2026neutronbytes.com
NextPower-producing unit
Supply-chain security
Secured · Contracted · At risk · Unknown — rated only on public evidence; Unknown means nothing has been disclosed.
Sources: company job boards (daily), SEC EDGAR, USAspending.gov, and the reviewed technology spreadsheets. Public records only cover US entities, so foreign companies and private firms that don't file will show gaps.
Read from SEC 8-Ks (bankruptcy, default, delisting, restatement, impairment, restructuring), cash runway in annual reports, Form D raises and the 30-day hiring trend. A prompt to look closer, not a credit rating.
2026-10-302026-11-09
Teams moving over 30 days: Manufacturing & Quality +1 (now 19), Internships -1 (now 11), Operations -1 (now 5)
By team
By location
Companies file a Form D within 15 days of selling shares privately. “Sold” is the amount raised so far in that offering; amended notices (D/A) update earlier ones.
| First sale | Notice | Offered | Sold |
|---|---|---|---|
| 2026-08-03 | D · filed 2026-08-18 | $85M | $60M |
| 2026-07-08 | D · filed 2026-07-28 | $320M | $320M |
| 2025-09-10 | D · filed 2025-09-19 | $80M | $51M |
| 2024-09-24 | D · filed 2024-10-09 | $28M | $28M |
| 2023-10-13 | D · filed 2023-10-30 | $8.2M | $8.1M |
Matched recipient: ANTARES NUCLEAR, INC.
STEP 4/6 · AT RISK HALEU is the bottleneckMost advanced designs need HALEU (5–20% enriched), with no commercial US supply at scale yet.
STEP 4/4 · WATCH Office relaunched as Energy Dominance FinancingLending shifts toward nuclear and utility expansions (AP1000 offers, Constellation uprates).
Critical inputs
Policy that applies
No minerals, policies or partners linked yet. Add them in the review spreadsheet.
2026-11-02 · contract
Antares, Last Energy, and Radiant hit DOE authorization milestonesANS Nuclear Newswire: The month of October saw three of the original Reactor Pilot Program companies hit a handful of milestones as each pursues Department of Energy authorization for the operation of various reactor projects. Both Last Energy and Radiant earned documented safety analyses (DSAs) for t…2026-10-29 · contract
Antares signs TRISO fuel procurement deal with BWXTThe commercial agreement covers an initial tonne of TRISO fuel for Antares microreactors, with quantities that could grow as deployment needs evolve. It follows DOE approval of the Nuclear Safety Design Agreement for the Mark-1 reactor.2026-10-27 · contract
Antares Signs TRISO Fuel Agreement with BWXT, Securing Fabrication Through the End of the DecadeBusiness Wire (energy)2026-10-27 · contract
BWXT Announces Contract with Antares for TRISO Nuclear Fuel ProductionOnly Form D notices on file (shown at left).
2026-10-27 · contract
Antares Secures BWXT Fuel Agreement, Advances DOE Review for Electricity-Producing Mark-1POWER Magazine: Antares Nuclear has secured a multi-year agreement with BWX Technologies (BWXT) for advanced nuclear fuel fabrication and received initial Department of Energy (DOE) safety approval for its Mark-1 microreactor, advancing two key requirements for the company’s planned transition f…2026-10-24 · regulatory
DOE approves Nuclear Safety Design Agreement for Antares Mark-1 reactorThe DOE cleared a key safety step for Antares' first electricity-producing microreactor, clearing the way for construction and testing at Idaho National Laboratory. Full-power electricity testing is planned for 2027 over six months.2026-09-11 · contract
Department of Defense awards Antares $161M for R1-S space reactorThe DoD awarded Antares $161 million in September to develop an R1-S reactor integrated with spacecraft for flight certification. Caplight logs the same award on September 11, 2026 as a financing event.