Soligenix, Inc. SEC filings SNGX
Soligenix, Inc. has 1,001 filings in SEC EDGAR's recent list, going back to Dec 3, 2008. Its latest annual report, Form ARS, was filed on Aug 3, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 7, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 21, 2026 (bylaw or fiscal year change, shareholder vote results, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 2, 2026 | — |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results, Other events
|
Sep 21, 2026 | Sep 17, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 17, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 17, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 17, 2026 |
| 4 | Insider transaction | Sep 18, 2026 | Sep 17, 2026 |
| 424B3 | Prospectus | Aug 7, 2026 | — |
| 424B3 | Prospectus | Aug 7, 2026 | — |
| 424B3 | Prospectus | Aug 7, 2026 | — |
| 424B3 | Prospectus | Aug 7, 2026 | — |
| 10-Q | Quarterly report | Aug 7, 2026 | Jun 30, 2026 |
| ARS | Annual report to shareholders | Aug 3, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Aug 3, 2026 | — |
| DEF 14A | Proxy statement | Aug 3, 2026 | Sep 17, 2026 |
| PRER14A | Form- prer14a | Jul 23, 2026 | — |
| PRE 14A | Preliminary proxy statement | Jul 21, 2026 | Sep 17, 2026 |
| 8-K |
Current report
Other events
|
Jun 26, 2026 | Jun 26, 2026 |
| 424B5 | Prospectus supplement | Jun 26, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 25, 2026 | — |
| 8-K |
Current report
Listing notice, Officer or director change, Other events
|
Jun 12, 2026 | Jun 10, 2026 |
| 8-K |
Current report
Other events
|
May 28, 2026 | May 28, 2026 |
| 424B5 | Prospectus supplement | May 28, 2026 | — |
| 424B3 | Prospectus | May 8, 2026 | — |
| 424B3 | Prospectus | May 8, 2026 | — |
| 424B3 | Prospectus | May 8, 2026 | — |
| 424B3 | Prospectus | May 8, 2026 | — |
| 10-Q | Quarterly report | May 8, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Other events
|
Apr 28, 2026 | Apr 28, 2026 |
| EFFECT | Filing | Apr 2, 2026 | — |
| EFFECT | Filing | Apr 2, 2026 | — |
| EFFECT | Filing | Apr 2, 2026 | — |
| EFFECT | Filing | Apr 2, 2026 | — |
| POS AM | Filing | Mar 31, 2026 | — |
| POS AM | Filing | Mar 31, 2026 | — |
| POS AM | Filing | Mar 31, 2026 | — |
| POS AM | Filing | Mar 31, 2026 | — |
| 10-K | Annual report | Mar 31, 2026 | Dec 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| 8-K |
Current report
Other events
|
Feb 12, 2026 | Feb 12, 2026 |
| 424B5 | Prospectus supplement | Jan 23, 2026 | — |
| 8-K |
Current report
Other events
|
Jan 23, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Dec 12, 2025 | Dec 11, 2025 |
| 4 | Insider transaction | Dec 12, 2025 | Dec 11, 2025 |
| 4 | Insider transaction | Dec 12, 2025 | Dec 11, 2025 |
| 4 | Insider transaction | Dec 12, 2025 | Dec 11, 2025 |
| 8-K |
Current report
Listing notice
|
Nov 18, 2025 | Nov 18, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 14, 2025 | — |
| 424B3 | Prospectus | Nov 7, 2025 | — |
| 424B3 | Prospectus | Nov 7, 2025 | — |
| 424B3 | Prospectus | Nov 7, 2025 | — |
| 10-Q | Quarterly report | Nov 7, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 2, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 1, 2025 | — |
| 8-K |
Current report
Material agreement, Other events
|
Sep 29, 2025 | Sep 25, 2025 |
| 424B4 | Prospectus | Sep 26, 2025 | — |
| EFFECT | Filing | Sep 25, 2025 | — |
| CORRESP | Letter to the SEC | Sep 23, 2025 | — |
| CORRESP | Letter to the SEC | Sep 23, 2025 | — |
| S-1 | Registration statement | Sep 19, 2025 | — |
| UPLOAD | Letter from the SEC | Sep 2, 2025 | — |
| DRS | Filing | Aug 27, 2025 | — |
| 8-K |
Current report
Other events
|
Aug 18, 2025 | Aug 18, 2025 |
| 424B3 | Prospectus | Aug 15, 2025 | — |
| 8-K |
Current report
Listing notice
|
Aug 15, 2025 | Aug 15, 2025 |
| 424B3 | Prospectus | Aug 15, 2025 | — |
| 424B3 | Prospectus | Aug 15, 2025 | — |
| 10-Q | Quarterly report | Aug 14, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Other events
|
Jul 31, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 20, 2025 |
| S-8 | Employee stock plan registration | Jun 20, 2025 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 20, 2025 | Jun 20, 2025 |
| 10-Q | Quarterly report | May 9, 2025 | Mar 31, 2025 |
| ARS | Annual report to shareholders | May 5, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | May 5, 2025 | — |
| DEF 14A | Proxy statement | May 5, 2025 | Jun 20, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Mar 28, 2025 | Mar 25, 2025 |
| EFFECT | Filing | Mar 26, 2025 | — |
| EFFECT | Filing | Mar 26, 2025 | — |
| EFFECT | Filing | Mar 26, 2025 | — |
| POS AM | Filing | Mar 21, 2025 | — |
| POS AM | Filing | Mar 21, 2025 | — |
| POS AM | Filing | Mar 21, 2025 | — |
| 10-K | Annual report | Mar 21, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Agreement ended
|
Feb 10, 2025 | Feb 5, 2025 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 12, 2024 |
| 424B3 | Prospectus | Nov 8, 2024 | — |
| 424B3 | Prospectus | Nov 8, 2024 | — |
| 424B3 | Prospectus | Nov 8, 2024 | — |
| 10-Q | Quarterly report | Nov 8, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 11, 2024 | Oct 8, 2024 |
| 424B5 | Prospectus supplement | Aug 16, 2024 | — |
| 8-K |
Current report
Other events
|
Aug 16, 2024 | Aug 16, 2024 |
| 424B3 | Prospectus | Aug 9, 2024 | — |
| 424B3 | Prospectus | Aug 9, 2024 | — |
| 10-Q | Quarterly report | Aug 9, 2024 | Jun 30, 2024 |
| EFFECT | Filing | Aug 2, 2024 | — |
| CORRESP | Letter to the SEC | Jul 30, 2024 | — |
| UPLOAD | Letter from the SEC | Jul 29, 2024 | — |
| 8-K |
Current report
Material agreement
|
Jul 25, 2024 | Jul 24, 2024 |
| S-1 | Registration statement | Jul 24, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jul 9, 2024 | Jul 9, 2024 |
| 8-K |
Current report
Change to shareholder rights, Officer or director change, Bylaw or fiscal year change, Shareholder vote results, Regulation FD disclosure
|
May 31, 2024 | May 30, 2024 |
| DEFA14A | Additional proxy material | May 29, 2024 | — |
| DEFA14A | Additional proxy material | May 28, 2024 | — |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
May 24, 2024 | May 23, 2024 |
| DEFA14A | Additional proxy material | May 22, 2024 | — |
| 8-K |
Current report
Other events
|
May 17, 2024 | May 17, 2024 |
| DEFA14A | Additional proxy material | May 17, 2024 | — |
| DEFA14A | Additional proxy material | May 15, 2024 | — |
| 424B3 | Prospectus | May 10, 2024 | — |
| 10-Q | Quarterly report | May 10, 2024 | Mar 31, 2024 |
| ARS | Annual report to shareholders | Apr 29, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Apr 29, 2024 | May 23, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Apr 22, 2024 | Apr 17, 2024 |
| PRE 14A | Preliminary proxy statement | Apr 19, 2024 | May 23, 2024 |
| 424B4 | Prospectus | Apr 19, 2024 | — |
| EFFECT | Filing | Apr 15, 2024 | — |
| CORRESP | Letter to the SEC | Apr 15, 2024 | — |
| CORRESP | Letter to the SEC | Apr 15, 2024 | — |
| CORRESP | Letter to the SEC | Apr 3, 2024 | — |
| 8-K |
Current report
Other events
|
Apr 3, 2024 | Apr 3, 2024 |
| CORRESP | Letter to the SEC | Apr 2, 2024 | — |
| CORRESP | Letter to the SEC | Apr 2, 2024 | — |
| S-1/A | Amended registration statement | Apr 2, 2024 | — |
| S-1/A | Amended registration statement | Mar 15, 2024 | — |
| 10-K | Annual report | Mar 15, 2024 | Dec 31, 2023 |
| UPLOAD | Letter from the SEC | Jan 19, 2024 | — |
| S-1 | Registration statement | Jan 16, 2024 | — |
| 8-K |
Current report
Listing notice
|
Dec 22, 2023 | Dec 21, 2023 |
| EFFECT | Filing | Dec 15, 2023 | — |
| 4 | Insider transaction | Dec 15, 2023 | Dec 15, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 15, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 15, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 15, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Dec 15, 2023 | Dec 15, 2023 |
| CORRESP | Letter to the SEC | Dec 14, 2023 | — |
| 4 | Insider transaction | Dec 8, 2023 | Dec 8, 2023 |
| 4 | Insider transaction | Dec 8, 2023 | Dec 8, 2023 |
| 4 | Insider transaction | Dec 8, 2023 | Dec 8, 2023 |
| 4 | Insider transaction | Dec 8, 2023 | Dec 8, 2023 |
| S-3/A | Filing | Dec 8, 2023 | — |
| CORRESP | Letter to the SEC | Dec 6, 2023 | — |
| CORRESP | Letter to the SEC | Nov 30, 2023 | — |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Nov 17, 2023 | Nov 16, 2023 |
| 10-Q | Quarterly report | Nov 13, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Oct 20, 2023 | Oct 18, 2023 |
| DEFA14A | Additional proxy material | Oct 17, 2023 | — |
| DEFA14A | Additional proxy material | Oct 17, 2023 | — |
| DEFA14A | Additional proxy material | Oct 16, 2023 | — |
| DEFA14A | Additional proxy material | Oct 13, 2023 | — |
| DEFA14A | Additional proxy material | Oct 12, 2023 | — |
| DEFA14A | Additional proxy material | Oct 12, 2023 | — |
| DEFA14A | Additional proxy material | Sep 22, 2023 | — |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Sep 22, 2023 | Sep 21, 2023 |
| DEFA14A | Additional proxy material | Sep 15, 2023 | — |
| 8-K |
Current report
Auditor change, Other events
|
Sep 15, 2023 | Sep 15, 2023 |
| UPLOAD | Letter from the SEC | Sep 12, 2023 | — |
| S-3 | Shelf registration | Aug 30, 2023 | — |
| 10-Q | Quarterly report | Aug 21, 2023 | Jun 30, 2023 |
| NT 10-Q | Filing | Aug 14, 2023 | Jun 30, 2023 |
| ARS | Annual report to shareholders | Aug 7, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Aug 7, 2023 | — |
| DEF 14A | Proxy statement | Aug 7, 2023 | Sep 21, 2023 |
| 8-K |
Current report
Officer or director change
|
Jul 7, 2023 | Jul 7, 2023 |
| 8-K |
Current report
Listing notice
|
Jun 23, 2023 | Jun 23, 2023 |
| 8-K |
Current report
Listing notice
|
May 26, 2023 | May 23, 2023 |
| 10-Q | Quarterly report | May 15, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
May 9, 2023 | May 5, 2023 |
| 424B4 | Prospectus | May 8, 2023 | — |
| EFFECT | Filing | May 5, 2023 | — |
| 4 | Insider transaction | May 5, 2023 | May 3, 2023 |
| 3 | Initial insider ownership | May 5, 2023 | May 3, 2023 |
| CORRESP | Letter to the SEC | May 4, 2023 | — |
| S-1/A | Amended registration statement | May 4, 2023 | — |
| 8-K |
Current report
Material agreement, Officer or director change
|
May 3, 2023 | May 3, 2023 |
| 8-K |
Current report
Other events
|
May 1, 2023 | May 1, 2023 |
| S-1/A | Amended registration statement | Apr 20, 2023 | — |
| CORRESP | Letter to the SEC | Apr 19, 2023 | — |
| 8-K |
Current report
Material agreement, New debt
|
Apr 19, 2023 | Apr 19, 2023 |
| 8-K |
Current report
Other events
|
Apr 14, 2023 | Apr 14, 2023 |
| 8-K |
Current report
Listing notice
|
Apr 10, 2023 | Apr 6, 2023 |
| UPLOAD | Letter from the SEC | Apr 7, 2023 | — |
| S-1 | Registration statement | Mar 31, 2023 | — |
Showing 200 filings, the most recent 200. 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
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- SNGX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Princeton, NJ
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 812796
- Former names
- SOLIGENIX, INC. (until Nov 2, 2026); DOR BIOPHARMA INC (until Sep 29, 2009); ENDOREX CORP (until Oct 24, 2001); IMMUNOTHERAPEUTICS INC (until Apr 30, 1996)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.