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AI brief of an SEC Form 8-K · DEEP FISSION, INC. (FISN)

Deep Fission Announces Drilling Collaboration With Youngquist Brothers for Underground Reactors

Neutral Impact 2 of 5 product/contract Written later

Deep Fission said it will work with Youngquist Brothers, a commercial drilling contractor, to evaluate and test drilling and borehole-construction methods for its underground reactor deployment model. The filing reports no financial results, and the company states that it is targeting commercial deployment as early as 2027.

Key points

  • Collaboration announced September 21, 2026, to advance large-diameter, deep borehole drilling methods
  • On September 3, the companies completed an equipment demonstration in Fort Myers, Florida, lowering and retrieving a 30-inch prototype canister into a 34-inch borehole to about 100 feet
  • Company is targeting commercial deployment as early as 2027

The filing

CompanyDEEP FISSION, INC. (FISN)
Form8-K, current report
Filed with the SECSep 21, 2026, 11:26 AM ET
Accession number0001104659-26-109201

Items reported: 7.01 Regulation FD Disclosure

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 11:44 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on September 21, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.