Elizabeth Muller - 05 Sep 2025 SCHEDULE 13D Report for DEEP FISSION, INC. Common Stock, $0.0001 par value per share

Filing Manager: Elizabeth Muller
Reporting Manager: Muller Elizabeth
Security: DEEP FISSION, INC. Common Stock, $0.0001 par value per share
Shares outstanding: 51,173,578 shares
Disclosed Ownership: 10,541,757 shares
Ownership: 20.6%
Form type: SCHEDULE 13D
Filing time: 23 Sep 2025, 21:43:45 UTC
Date of event: 05 Sep 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Muller Elizabeth	20.6%	10,541,757	10,541,757	0	/s/ Elizabeth Muller	Elizabeth Muller/Director, President and Chief Executive Officer	0002081850