DEEP FISSION, INC.
New Form D on file · 2026-02-18 · the record
What the record says
Each marker is one filing. The larger marker is the filing this page is about.
Trailing twelve months. 256 filings in Other Energy, totalled by week. The dot is this raise, $80M, on the same scale — one filing against the whole group's total, so it sits low by construction.
Company officers on record
Elizabeth Muller is named as Executive Officer and Director on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
Richard Muller is named as Executive Officer on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
William Schmitz is named as Executive Officer on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
Thomas Glanville is named as Director on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
Michael Brasel is named as Executive Officer on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
Blake Janover is named as Director on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
Leslie Goldman Tepper is named as Director on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
Jonathon Angell is named as Director on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
Jon Gordon is named as Executive Officer on the Form D that DEEP FISSION, INC. filed with the SEC on 18 February 2026, one of 9 people that filing names.
9 people named on the filing — 5 holding an executive role and 4 as directors only.
Named as of the 2026-02-18 filing. Titles and locations are exactly as the filing states — not independently confirmed elsewhere.
- 9 people named on the filing — 5 holding an executive role and 4 as directors only.
No investor is drawn from a Form D — the form states how many invested and never who.
The full profile
Source Check, INVEST, RECRUIT and Press Requests on DEEP FISSION, INC.
- Source Check — verify William (Mark) Schmitz's other claims against the registers that hold them.
- INVEST — size up this raise on the figures the filing states.
- RECRUIT — see who is already on the team.
- Press Requests — connect with William (Mark) Schmitz for a story.
You land back on this company when you are in.
Not ready to upgrade? Keep this one in view instead.
Watchlist DEEP FISSION, INC.You get an alert in MentionFox the next time this company shows up.
Is this you?
If you're behind DEEP FISSION, INC.: the weeks after a raise are watched the same way — by other investors sizing you up, and by founders checking who just got funded. FoxPlug turns your commits, deploys, and releases into that story automatically. FoxChat puts a guide on your own site so the people this filing just sent you don't leave after one page.
Sourced from the filing index on sec.gov.