Jonathon Angell - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Jonathon Angell has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Jonathon Angell serves as Director of DEEP FISSION, INC.. Angell has also held reporting roles at Deep Isolation Nuclear, Inc.. Angell has reported 6 insider filings with the SEC since 2025. The most recent filing was in March 2026.
| Role | Director |
|---|---|
| Notability | 26/100 |
Board memberships
- DEEP FISSION, INC.
- Deep Isolation Nuclear, Inc.
Reported roles
- Director
- Director
Trading Pattern
InsiderAlpha's records for Jonathon Angell go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Jonathon Angell has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Director at DEEP FISSION, INC. (FISN) - 1 filing, 2026
- Director at DEEP FISSION, INC. (FISN) - 2 filings, 2025 to 2026
- Director at Deep Isolation Nuclear, Inc. (DBHL) - 2 filings, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-11-21 | DBHL | Deep Isolation Nuclear, Inc. | A - Grant or award | 43.3K | $0.00 | |
| 2025-10-01 | DBHL | Deep Isolation Nuclear, Inc. | A - Grant or award | 32.5K | $0.00 |
Companies - Last 90 Days
- DEEP FISSION, INC. (FISN) - 1 filing, last 2026-07-27
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Jonathon Angell has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Mark N. Tompkins - $2 of FISN open-market activity in the last 12 months
- Ian Seth Jacobs - $2 of FISN open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- James Jones
- Andrew T. Kaplan
- A. J. Kazimi
- Michael John Kazley
- Kennedy Lewis Investment Holdings II LLC
- KENNEDY LEWIS MANAGEMENT LP
- James M. Kilts
- Richard D. Kinder
Frequently Asked Questions
Who is Jonathon Angell?
Jonathon Angell serves as Director of DEEP FISSION, INC.. Angell has also held reporting roles at Deep Isolation Nuclear, Inc.. Angell has reported 6 insider filings with the SEC since 2025. The most recent filing was in March 2026.…
How many SEC Form 4 filings has Jonathon Angell submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Jonathon Angell's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Jonathon Angell profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.