William (Mark) Schmitz
Personal wealth note: Equibles reports source-backed professional activity and disclosed compensation; it does not estimate personal net worth.
About William (Mark) Schmitz
William (Mark) Schmitz is recorded as CFO at Deep Fission, Inc. (FISN). Deep Fission, Inc. reported in an 8-K filed September 11, 2025 that William (Mark) Schmitz was appointed Chief Financial Officer, effective September 5, 2025.
“Also, as of the Effective Time, Ian Jacobs resigned from all officer positions with us, and Elizabeth Muller was appointed as our President and Chief Executive Officer, William (Mark) Schmitz was appointed as our Chief Financial Officer and Richard Muller was appointed as our Chief Technology Officer.”
Summary generated from SEC filings and earnings-call records held by Equibles.
Affiliation history
Recorded current and former roles; source labels appear when available.
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Current
2025-09-05–present
Company network
Recorded roles and call appearances connecting this person to public companies.
Leadership on record at Deep Fission, Inc.
Other people whose current roles at this company are on record from its filings.
- Elizabeth A. Muller CEO
- Elizabeth Muller CEO, Board Member
- Liz Muller CEO, Board Member
- Mark Schmitz CFO
- Michael Brasel COO
- Richard A. Muller CTO
- Richard Muller CTO, Board Member
- Jon Gordon General Counsel
- Blake E. Janover Board Member
- Jonathon Angell Board Member
Recent activity
Earnings-call and investor-event appearances, plus filed executive appointments or departures, newest first.