Standard Nuclear, Inc. SEC filings STDN
Standard Nuclear, Inc. has 61 filings in SEC EDGAR's recent list, going back to Feb 9, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 27, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 8, 2026 (regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 19, 2026 | Oct 15, 2026 |
| 4 | Insider transaction | Oct 19, 2026 | Oct 17, 2026 |
| 4 | Insider transaction | Oct 19, 2026 | Oct 17, 2026 |
| 4 | Insider transaction | Oct 19, 2026 | Oct 17, 2026 |
| 4 | Insider transaction | Oct 19, 2026 | Oct 17, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 8, 2026 | Sep 8, 2026 |
| 4/A | Form 4/a | Aug 28, 2026 | Aug 12, 2026 |
| 3/A | Form 3/a | Aug 28, 2026 | Aug 12, 2026 |
| 10-Q | Quarterly report | Aug 27, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Other events
|
Aug 27, 2026 | Aug 27, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 27, 2026 | Aug 26, 2026 |
| 8-K |
Current report
Other events
|
Aug 20, 2026 | Aug 20, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 12, 2026 |
| 3 | Initial insider ownership | Aug 14, 2026 | Aug 12, 2026 |
| 8-K |
Current report
Officer or director change
|
Aug 14, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Jul 30, 2026 | Jul 17, 2026 |
| 3 | Initial insider ownership | Jul 30, 2026 | Jul 15, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 23, 2026 | — |
| 4 | Insider transaction | Jul 23, 2026 | Jul 17, 2026 |
| 3 | Initial insider ownership | Jul 23, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 22, 2026 | Jul 17, 2026 |
| 3 | Initial insider ownership | Jul 22, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 22, 2026 | Jul 20, 2026 |
| 4/A | Primary document | Jul 22, 2026 | Jul 17, 2026 |
| 8-K |
Current report
Other events
|
Jul 22, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 21, 2026 | Jul 17, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jul 21, 2026 | Jul 17, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 17, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 17, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 16, 2026 |
| 424B4 | Prospectus | Jul 16, 2026 | — |
| 3 | Initial insider ownership | Jul 16, 2026 | Jul 15, 2026 |
| S-8 | Employee stock plan registration | Jul 16, 2026 | — |
| EFFECT | Filing | Jul 15, 2026 | — |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| 3 | Initial insider ownership | Jul 15, 2026 | Jul 15, 2026 |
| CERT | Nyse certification | Jul 15, 2026 | — |
| 8-A12B | For registration of certain classes | Jul 15, 2026 | — |
| S-1/A | Amended registration statement | Jul 15, 2026 | — |
| S-1/A | Amended registration statement | Jul 7, 2026 | — |
| S-1 | Registration statement | Jun 18, 2026 | — |
| DRS/A | Filing | Jun 2, 2026 | — |
| DRS/A | Filing | May 5, 2026 | — |
| DRS/A | Filing | Apr 10, 2026 | — |
| DRS | Filing | Feb 13, 2026 | — |
| D | Filing | Feb 9, 2026 | — |
| D | Filing | Feb 9, 2026 | — |
| D | Filing | Feb 9, 2026 | — |
Showing 61 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Industrial Inorganic Chemicals (SIC 2810)
- Listed as
- STDN (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Oak Ridge, TN
- SEC filer status
- , Emerging growth company
- SEC CIK
- 2086716
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.