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Investment type
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Equity / Common Stock, par value $0.0001 per share
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Latest Disclosed Shares Owned
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2,958,333 shares
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Security Ownership %
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5.8%
Mark N. Tompkins ownership in Deep Fission, Inc. Common Stock, par value $0.0001 per share
14 Nov 2025 - Mark N. Tompkins has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,958,333 shares of Deep Fission, Inc. Common Stock, par value $0.0001 per share.
This represents 5.8% ownership of the company.
This is the first filing by Mark N. Tompkins disclosing ownership of Deep Fission, Inc. Common Stock, par value $0.0001 per share.