Mark Tompkins

Holdings History for Deep Fission, Inc. - Common Stock, par value $0.0001 per share

Investment type: Equity / Common Stock, par value $0.0001 per share
Latest Disclosed Ownership: 2.96M shares
Security Ownership: 5.82%

Mark N. Tompkins ownership in Deep Fission, Inc. Common Stock, par value $0.0001 per share

2025-11-14 - Mark N. Tompkins has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2.96M shares of Deep Fission, Inc. Common Stock, par value $0.0001 per share. This represents 5.82% percent ownership of the company.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
Mark N. Tompkins	5.82%			2.96M				13G/A	9/30/2025	14 Nov 2025 15:36:30