Leslie Goldman Tepper - 16 Sep 2026 Form 4 Insider Report for Deep Isolation Nuclear, Inc. (DBHL)

Reporting relationship: Director
Issuer ticker: DBHL
Reported as of: 16 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 Sep 2026, 21:22:38 UTC
Prior SEC filing: 27 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Leslie Goldman Tepper

Key filing fact

Leslie Goldman Tepper filed Form 4 for Deep Isolation Nuclear, Inc. (DBHL) on 18 Sep 2026.

Key facts

This page summarizes Leslie Goldman Tepper's Form 4 filing for Deep Isolation Nuclear, Inc. (DBHL).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 18 Sep 2026, 21:22.

Change

Previous filing in this sequence was filed on 27 Jul 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002062355 Primary reporting owner

Goldman Tepper Leslie

Relationship: Director
Address: C/O DEEP ISOLATION NUCLEAR, INC., 2001 ADDISON STREET, SUITE 300, BERKELEY
Signature: /s/ Leslie Goldman Tepper
Signature date: 18 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

DBHL transaction

Common Stock

Award

Transaction value
Shares: +70,000
Change %: +65%
Price: $0.000000^*
Shares after: 178,250
Date: 16 Sep 2026
Ownership: Direct
Footnotes: F1

DBHL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 25,000
Date: 16 Sep 2026
Ownership: By Bella AJT Holdings, LLC
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents a grant of restricted stock units ("RSUs") to the Reporting Person pursuant to the Deep Isolation Nuclear, Inc. 2025 Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. Upon issuance the RSUs immediately vested, but their conversion into shares of common stock of the Issuer is deferred until the earliest of the following events to occur: (i) a change of control of the Issuer, (ii) a separation of service as a director by the Reporting Person, or (iii) death of the Reporting Person.

Footnote F2

The Reporting Person is a member of Bella AJT Holdings, LLC and shares voting and investment power over and a pecuniary interest in the securities held by such entity.