🕵️ DEEP Isolation Nuclear, Inc. ($DBHL)

SEC insider & ownership activity, last 12 months · CIK 1918080 · every row links its SEC filing

Insiders were quiet over the last 12 months – no open-market buys or sells. Mark N. Tompkins added 4.0% → 5.5%. No red-flag 8-Ks in the window.

Insider flow

0 buyers, $0 (0 lots) · 0 sellers, $0 (0 lots)

No open-market insider transactions in the last 12 months.

5%+ holders

HolderStakeClassScheduleEvent
Elizabeth Muller 22.1% 13DJul 23, 2025 filing ↗
Warren E. Spieker, JR., Individually and AS (trustee) 10.3% 13GAug 14, 2025 filing ↗
Robert L. Mercer 6.5% 13GAug 14, 2025 filing ↗
Richard Muller 5.8% 13GAug 18, 2025 filing ↗
Mark N. Tompkins 5.5% 13GMay 15, 2026 filing ↗

Planned insider sales (Form 144)

No sale notices filed in the last 12 months.

Material events (8-K)

ItemEvent date
Reg FD disclosure (7.01)Jul 23, 2026 filing ↗
Financial Statements and Exhibits (9.01)Jul 23, 2026 filing ↗
Shareholder vote (5.07)Jun 16, 2026 filing ↗
Earnings (2.02)May 14, 2026 filing ↗
Reg FD disclosure (7.01)May 14, 2026 filing ↗
Financial Statements and Exhibits (9.01)May 14, 2026 filing ↗
Reg FD disclosure (7.01)Apr 7, 2026 filing ↗
Financial Statements and Exhibits (9.01)Apr 7, 2026 filing ↗
Officer/director changes (5.02)Feb 24, 2026 filing ↗
Financial Statements and Exhibits (9.01)Feb 24, 2026 filing ↗
Officer/director changes (5.02)Feb 17, 2026 filing ↗
Reg FD disclosure (7.01)Feb 17, 2026 filing ↗
Financial Statements and Exhibits (9.01)Feb 17, 2026 filing ↗
Officer/director changes (5.02)Feb 3, 2026 filing ↗
Reg FD disclosure (7.01)Feb 3, 2026 filing ↗
Financial Statements and Exhibits (9.01)Feb 3, 2026 filing ↗
Material agreement (1.01)Jan 28, 2026 filing ↗
Financial Statements and Exhibits (9.01)Jan 28, 2026 filing ↗
Officer/director changes (5.02)Jan 21, 2026 filing ↗
Reg FD disclosure (7.01)Jan 21, 2026 filing ↗
Financial Statements and Exhibits (9.01)Jan 21, 2026 filing ↗
Officer/director changes (5.02)Nov 18, 2025 filing ↗
Reg FD disclosure (7.01)Nov 18, 2025 filing ↗
Financial Statements and Exhibits (9.01)Nov 18, 2025 filing ↗
Officer/director changes (5.02)Oct 17, 2025 filing ↗
Reg FD disclosure (7.01)Oct 17, 2025 filing ↗
Financial Statements and Exhibits (9.01)Oct 17, 2025 filing ↗
Officer/director changes (5.02)Sep 25, 2025 filing ↗
Reg FD disclosure (7.01)Sep 25, 2025 filing ↗
Financial Statements and Exhibits (9.01)Sep 25, 2025 filing ↗