Deep Isolation Nuclear, Inc. (DBHL) · Insider trading
What Deep Isolation Nuclear's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$0
0 insiders
Net, 12 months
$0
bought less sold
Latest filing
2026-10-08
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Tompkins Mark N.Director, 10% owner | – | – | 1 | 2025-07-16 | 4,725,000 |
| Jacobs Ian SethDirector, President, CEO, CFO, Secretary | – | – | 1 | 2025-07-16 | 275,000 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
39 × grant or award1 × other
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-10-06 | Airhart StevenPresident-FES | Grant or award A | +20,000 | – | 412,200 | Form 4 |
| 2026-10-06 | Angell JonathonDirector | Grant or award A | +23,214 | – | 482,121 | Form 4 |
| 2026-10-06 | Whitten-Doolin Paula BeckGC and Corporate Secretary | Grant or award A | +2,976 | – | 77,976 | Form 4 |
| 2026-10-06 | Baltzer RodneyDirector, President and CEO | Grant or award A | +82,054 | – | 1,161,764 | Form 4 |
| 2026-10-06 | Goldman Tepper LeslieDirector | Grant or award A | +23,214 | – | 201,464 | Form 4 |
| 2026-10-06 | Hornbaker Renee JDirector | Grant or award A | +15,476 | – | 128,809 | Form 4 |
| 2026-10-06 | Steele ChristaDirector | Grant or award A | +17,024 | – | 130,357 | Form 4 |
| 2026-10-06 | Hunter Ralph L. JrDirector | Grant or award A | +4,643 | – | 117,976 | Form 4 |
| 2026-10-06 | Sloane JesseExecutive VP of Engineering | Grant or award A | +58,594 | – | 71,927 | Form 4 |
| 2026-10-06 | McCallum SophieChief of Staff | Grant or award A | +40,179 | – | 56,846 | Form 4 |
| 2026-10-06 | Parker Christopher LombardCCO | Grant or award A | +62,500 | – | 79,167 | Form 4 |
| 2026-10-06 | Nelson Joseph EugeneCFO and Treasurer | Grant or award A | +3,577 | – | 103,577 | Form 4 |
| 2026-10-06 | Muller ElizabethDirector, 10% owner, Other | Grant or award A | +23,214 | – | 11,771,267 | Form 4 |
| 2026-09-16 | Angell JonathonDirector | Grant or award A | +70,000 | – | 458,907 | Form 4 |
| 2026-09-16 | Goldman Tepper LeslieDirector | Grant or award A | +70,000 | – | 178,250 | Form 4 |
| 2026-09-16 | Hornbaker Renee JDirector | Grant or award A | +70,000 | – | 113,333 | Form 4 |
| 2026-09-16 | Hunter Ralph L. JrDirector | Grant or award A | +70,000 | – | 113,333 | Form 4 |
| 2026-09-16 | Steele ChristaDirector | Grant or award A | +70,000 | – | 113,333 | Form 4 |
| 2026-05-27 | Nelson Joseph EugeneChief Financial Officer | Grant or award A | +100,000 | – | 100,000 | Form 4 |
| 2026-05-27 | Whitten-Doolin Paula BeckGeneral Counsel | Grant or award A | +75,000 | – | 75,000 | Form 4 |
| 2026-01-21 | Hunter Ralph L. JrDirector | Grant or award A | +43,333 | – | 43,333 | Form 4 |
| 2025-11-19 | Sloane JesseEVP Engineering | Grant or award A | +738 | – | 13,333 | Form 4 |
| 2025-11-19 | Muller ElizabethDirector, 10% owner | Grant or award A | +43,333 | – | 11,748,053 | Form 4 |
| 2025-11-19 | Hornbaker Renee JDirector | Grant or award A | +43,333 | – | 43,333 | Form 4 |
| 2025-11-19 | Angell JonathonDirector | Grant or award A | +43,333 | – | 388,907 | Form 4 |
| 2025-11-19 | Steele ChristaDirector | Grant or award A | +43,333 | – | 43,333 | Form 4 |
| 2025-11-19 | McCallum SophieChief of Staff, Corp. Sec. | Grant or award A | +6,798 | – | 16,667 | Form 4 |
| 2025-11-19 | Parker Christopher LombardCCO | Grant or award A | +5,121 | – | 16,667 | Form 4 |
| 2025-11-19 | Goldman Tepper LeslieDirector | Grant or award A | +43,333 | – | 108,250 | Form 4 |
| 2025-10-17 | Hornbaker Renee JDirector | Grant or award A | +32,500 | – | 32,500 | Form 4 |
| 2025-10-01 | Muller ElizabethDirector, 10% owner | Grant or award A | +32,500 | – | 11,737,220 | Form 4 |
| 2025-10-01 | Steele ChristaDirector | Grant or award A | +32,500 | – | 32,500 | Form 4 |
| 2025-10-01 | Parker Christopher LombardCCO | Grant or award A | +11,546 | – | 11,546 | Form 4 |
| 2025-10-01 | Baltzer RodneyDirector, President and CEO | Grant or award A | +85,000 | – | 1,079,710 | Form 4 |
| 2025-10-01 | Sloane JesseEVP Engineering | Grant or award A | +12,595 | – | 12,595 | Form 4 |
| 2025-10-01 | Goldman Tepper LeslieDirector | Grant or award A | +32,500 | – | 97,687 | Form 4 |
| 2025-10-01 | Airhart StevenPres, Freestone Env Svcs | Grant or award A | +11,110 | – | 392,200 | Form 4 |
| 2025-10-01 | McCallum SophieChief of Staff, Corp. Sec. | Grant or award A | +9,869 | – | 9,869 | Form 4 |
| 2025-10-01 | Angell JonathonDirector | Grant or award A | +32,500 | – | 378,074 | Form 4 |
| 2025-07-23 | Tompkins Mark N.Other | Other J | −2,833,333 | – | 1,891,667 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.