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Reg D 506(c)TRL43.3–4.7Tier IOpen

Kestrel Fast Systems

Kestrel Fast Systems

A lead-bismuth fast reactor that eats spent fuel. Accredited investors only.

Spent fuel is only waste if you cannot burn it. A fast spectrum can, and lead-bismuth eutectic gives high boiling point coolant at atmospheric pressure. Kestrel has validated cladding compatibility in a flowing loop at temperature. The offering runs concurrently with a Reg CF community round planned for the Richland host community, permitted under Rule 152.

Columbia Basin Technology Park · Richland, WAPre-applicationEscrow: Meridian Trust, N.A.
TRL 4 of 9, band 3.3 to 4.7, signed by Dr. Helena Vargas-Mbeki, PE, Nuclear; former NRC senior reactor analyst, on Apr 20, 2026.See the evidence it rests on

$18,050,000 committed of $25,000,000

$5,415,000 released · 72% subscribed

Released to the issuerCommitted, held in escrowRemaining
Minimum
$25,000

$1,000 per unit

Target coupon
5.00%

Annual, fixed

Term
5 yr
Investors
74

Closes September 30, 2026 · 17 days remaining

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  • Eligibility depends on residency, accreditation status and how much you have already invested this year.
  • You can read everything about this offering without an account. Committing capital requires one.
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Principal risks of this offering

  • Polonium-210 production in lead-bismuth coolant creates handling requirements with limited commercial precedent.
  • Reprocessed fuel supply depends on a domestic recycling capability that does not currently exist at scale.
  • TRL 4. The design has not been demonstrated as an integrated system in any environment.
  • Available only to verified accredited investors, and restricted from resale.

General risks of private securities

Private securities are speculative and illiquid. You should be prepared to hold this position for its full term and to lose the entire amount invested. Nuclear construction has a documented history of schedule and cost overrun. Platforms that sold equity in unbuilt energy projects have mostly failed; those that sold debt against operating assets with contracted offtake have mostly survived. That history is why the TRL tier of an offering matters more than its headline return.

A TRL score is not a prediction and not a rating. Read the offering documents in full before committing capital.