Deep Isolation Nuclear, Inc.

Overview

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• TickerDBHL on OTC¹
• IndustryRefuse Systems¹
• HeadquartersPiano, Texas¹
• Incorporated inDE²
• Business address5717 Legacy Drive, Suite 250, Office 2079, Piano, Tx 75024²
• Filer category, Emerging growth company²
• Legal formCorporation

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Deep Isolation Nuclear, Inc.’s (“Deep Isolation” or the “Company”) mission is to revolutionize the disposal of nuclear waste through the development of innovative solutions for temporary storage and transportation of high-level waste (“HLW”), including spent nuclear fuel (“SNF”), and for permanent disposal of HLW via deep underground boreholes. The world’s current nuclear waste management model is limited to two options: above-ground interim storage and geologic disposal via mined repositories. Both options are extremely costly and, to date, neither has presented a viable, long-term solution to the global nuclear waste disposal problem. There are currently no operational mined repository facilities for the disposal of HLW or SNF; above-ground interim storage, which does not provide a permanent disposal solution, currently is the only waste management solution for HLW and SNF being practi…³ From its latest annual report

Corporate structure

Deep Isolation Nuclear, Inc. sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

What it owns

What Deep Isolation Nuclear, Inc. reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Property and equipment

Intangibles and goodwill

Properties, in its own words

The Company does not own or lease any material real properties. We currently operate in a decentralized fashion, with all employees primarily working remotely with the exception of Freestone employees. We believe such remote operations provide valuable flexibility to our employees and overhead cost savings for the Company. The Company maintains a nominal office space located in Berkeley, California. Freestone leases an office space in Richland, Washington, where the majority of Freestone employees work.

We plan to continue the remote operation of DI Nuclear, Deep Isolation, Inc., Deep Isolation US LLC, and Deep Isolation EMEA in the near and medium term. We believe our facilities are adequate and suitable for our current needs and that, should it be needed, suitable additional or alternative space will be available to accommodate our operations.

Item 2 of the 10-K filed Mar 30, 2026.³

Leadership

Who has led Deep Isolation Nuclear, Inc., and when. Pick a name to see everywhere that person has worked.

• Chief executive officerRodney Baltzer Aug 12, 2025 to now¹⁰
• PresidentRodney Baltzer Aug 12, 2025 to now¹⁰
• Chief financial officerJoseph Eugene Nelson Feb 26, 2026 to now¹¹

Named in SEC Form D filings

People the company listed in its private-offering notices.

• DirectorLeslie Goldman Tepper named Aug 8, 2025²⁴

Former names

• Aspen-1 Acquisition Inc.Mar 18, 2022 to Jul 18, 2025²

Timeline

1. Oct 2, 20268-K Regulation FD disclosure²⁵
2. Sep 1, 20268-K Executive or director change²⁶
3. Aug 31, 20268-K Executive or director change²⁷
4. Aug 6, 20268-K Results of operations²⁸
5. Jul 27, 20268-K Regulation FD disclosure²⁹
6. Jun 17, 20268-K Shareholder vote³⁰
7. May 14, 20268-K Results of operations; Regulation FD disclosure³¹
8. Apr 8, 20268-K Regulation FD disclosure³²
9. Mar 2, 20268-K Executive or director change³³
10. Feb 17, 20268-K Executive or director change; Regulation FD disclosure³⁴
11. Feb 9, 20268-K Executive or director change; Regulation FD disclosure³⁵
12. Feb 3, 20268-K Entered a material agreement³⁶
13. Aug 12, 2025New chief executive Rodney Baltzer becomes CEO¹⁰

Calendar

Coming up

1. Around Oct 29, 2026Next results, estimated About a quarter after its last report. The company hasn't announced the date.

When it reported results

1. Aug 6, 2026Reported quarterly or annual results²⁸
2. May 14, 2026Reported quarterly or annual results³¹

Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar

Filings

119 filings to the SEC since October 2021: 4 annual reports, 14 quarterly reports, 19 major events, 59 insider forms, 8 large holders, 1 private raises, 14 other. The latest 20:

1. Oct 8, 20264 EDGAR
2. Oct 8, 20264 EDGAR
3. Oct 8, 20264 EDGAR
4. Oct 8, 20264 EDGAR
5. Oct 8, 20264 EDGAR
6. Oct 8, 20264 EDGAR
7. Oct 8, 20264 EDGAR
8. Oct 8, 20264 EDGAR
9. Oct 8, 20264 EDGAR
10. Oct 8, 20264 EDGAR
11. Oct 8, 20264 EDGAR
12. Oct 8, 20264 EDGAR
13. Oct 8, 20264 EDGAR
14. Oct 2, 20268-K CURRENT REPORT EDGAR
15. Sep 18, 20264 EDGAR
16. Sep 18, 20264 EDGAR
17. Sep 18, 20264 EDGAR
18. Sep 18, 20264 EDGAR
19. Sep 18, 20264 EDGAR
20. Sep 1, 20268-K/A AMENDMENT NO. 1 TO FORM 8-K EDGAR

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

2 open-market trades by officers, directors and large owners since October 2021: 1 buys and 1 sales. Grants, option exercises and gifts are left out.

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

• Mark N. TompkinsSCHEDULE 13G/A, 3 filings Feb 10, 2023 to May 15, 2026³⁷
• Elizabeth MullerSCHEDULE 13D, 1 filing Aug 18, 2025³⁸
• Richard MullerSCHEDULE 13G, 1 filing Aug 18, 2025³⁹
• Robert L. MercerSCHEDULE 13G, 1 filing Aug 14, 2025⁴⁰
• Warren Edward Spieker Jr.SCHEDULE 13G, 1 filing Aug 14, 2025⁴¹
• Ian Seth JacobsSC 13G, 1 filing Feb 13, 2023⁴²

Executive pay

What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.

Money raised

Private offerings the company reported to the SEC on Form D.

1. Jul 23, 2025Raised $33 million in a private offering of equity Form D: 241 investors so far Form D

SEC filer profile

How Deep Isolation Nuclear, Inc. is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

• Name on EDGARDeep Isolation Nuclear, Inc.¹
• CIK0001918080
• Employer ID (EIN)87-4225965³
• Filer statusNon-accelerated filer an emerging growth company; a smaller reporting company; not a shell company³
• Incorporated inDelaware³
• Fiscal year endsDecember 31¹
• Industry code (SIC)4953 Refuse Systems¹
• SEC reviewing officeOffice of Energy & Transportation, Division of Corporation Finance¹
• Business address5717 Legacy Drive, Suite 250, Office 2079, Piano, TX 75024¹
• Mailing address1761 George Washington Way, #362, Richland, WA 99354¹
• Phone561 464 2841¹
• Shares outstanding57,667,113 as of Aug 3, 2026⁸
• Public float$0 as of Jun 30, 2025⁴
• AuditorCBIZ CPAs P.C., New York, NY PCAOB ID 199; no auditor attestation of internal control over financial reporting³
• On EDGAR sinceMar 18, 2022¹
• Filings119 in all: 4 (42), 8-K (18), 3 (17), 10-Q (14), S-1/A (5), 10-K (4), SCHEDULE 13G (3), SC 13G (2)¹
  All 21 form types

  SCHEDULE 13G/A (2), 10-12G (1), 424B8 (1), 8-K/A (1), D (1), DEF 14A (1), DEFA14A (1), EFFECT (1), S-1 (1), S-8 (1), SC 14F1 (1), SCHEDULE 13D (1), SEC STAFF ACTION (1)

• Latest filingsAnnual report (10-K) Mar 30, 2026
  Quarterly report (10-Q) Aug 7, 2026
  Proxy statement (DEF 14A) Apr 29, 2026
  Latest 8-K (8-K) Oct 2, 2026

Risk factors and legal proceedings

The risks Deep Isolation Nuclear, Inc. names in Item 1A of its 10-K filed Mar 30, 2026: 79 risks under these headings, as written.³

• •The market for DBD is not yet established and may not develop on the timeline we expect or at all.
• •Our projections for the growth of the total addressable market for nuclear waste disposal are based on a number of assumptions and estimates, some or all of which may prove to be inaccurate or, even if accurate, may not result in the projected results. If demand for our nuclear waste storage and disposal solutions fails to develop sufficiently, our business and operations could suffer, and we would be unable to achieve profitability.
• •We are subject to extensive laws and regulations relating to various aspects of our business. The nature of our business also requires us to interact with various governmental entities, subjecting us to the policies, priorities,
• regulations, mandates, and funding levels of such governmental entities, and we may be negatively or positively impacted by any change thereto.
• •We are an early-stage company with a history of financial losses, and we expect to continue to incur financial losses for the foreseeable future. We cannot assure you that we can or will be able to operate profitably.
• •We have not yet entered into any binding contract with any customer to temporarily store or permanently dispose of nuclear waste through the implementation of our DBD solutions, and there is no guarantee that we will be able to do so in the future, or even if we do, that our operations will be successful.
• •Our expected timeline for the commercialization of our technologies is subject to a number of assumptions, estimates and milestones that may prove to be inaccurate or incorrect or may not be achieved. As part of our commercialization strategy, we are pursuing a multi-phase, multi-year initiative to complete a non-radioactive, full-scale, at-depth demonstration of the deployment of our UCS canisters and our DBD solution. Delays or failures in our demonstration initiative may adversely impact our commercialization strategy and timeline, and
• thus our business and operations, and even if successfully completed on time, may not result in our business being successful in the foreseeable future.
• •We operate in an emerging industry, which makes it difficult to evaluate our prospects and the risks and challenges we may encounter.
• •We have limited experience commercializing our products at a large scale and may not be able to do so efficiently, effectively or to nuclear-grade levels of quality assurance.
• •We believe that the likelihood of successfully commercializing our products would be enhanced by a successful completion of our non-radioactive, full-scale, at-depth demonstration facility and a delay in or failure to do so may adversely impact our business and operations. Furthermore, no assurances can be given that, even if successfully completed, our demonstration facility will lead to our business being successful.
• •If we fail to manage our growth effectively, we may be unable to execute our business plan, which could have a material adverse effect on our business prospects, financial condition, results of operations and cash flows.

Legal proceedings

We are not involved in any litigation that we believe could have a material adverse effect on our financial position or results of operations. There is no action, suit, proceeding, inquiry, or investigation before or by any court, public board, government agency, self-regulatory organization or body pending or, to the knowledge of our executive officers, threatened against or affecting our Company or our officers or directors in their capacities as such. In the future, we might from time to time become involved in litigation relating to claims arising from our ordinary course of business.

The opening of Item 3, Legal Proceedings.³