Filing Manager
Richard Muller
Reporting Manager
Muller Richard
Shares outstanding
51,192,509 shares
Disclosed Ownership
5,426,406 shares
Ownership
11%
Form type
SCHEDULE 13D
Filing time
23 Sep 2025, 21:44:36 UTC
Date of event
05 Sep 2025

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Quoteable Key Fact

"Richard Muller disclosed 11% ownership in DEEP FISSION, INC. Common Stock, $0.0001 par value per share on 05 Sep 2025."

Quick Takeaways

  • Richard Muller filed SCHEDULE 13D for DEEP FISSION, INC. Common Stock, $0.0001 par value per share.
  • Disclosed ownership: 11%.
  • Date of event: 05 Sep 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 23 Sep 2025, 21:44.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Muller Richard 11% 5,426,406 5,426,406 0 /s/ Richard Muller Richard Muller/Director 0002081872