Cytosorbents Corp SEC filings CTSO
Cytosorbents Corp has 977 filings in SEC EDGAR's recent list, going back to Mar 29, 2004. Its latest annual report, Form ARS, was filed on Jun 25, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 23, 2026 (regulation fd disclosure, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 23, 2026 | Sep 22, 2026 |
| 4 | Insider transaction | Sep 16, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 16, 2026 | Sep 14, 2026 |
| 4 | Insider transaction | Sep 16, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 4, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Sep 8, 2026 | Sep 8, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Aug 14, 2026 | Aug 13, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 7, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Listing notice
|
Jul 6, 2026 | Jun 29, 2026 |
| ARS | Annual report to shareholders | Jun 25, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Jun 25, 2026 | — |
| DEF 14A | Proxy statement | Jun 25, 2026 | Aug 13, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 25, 2026 | Jun 24, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 12, 2026 |
| PRE 14A | Preliminary proxy statement | Jun 11, 2026 | Jun 11, 2026 |
| 10-Q | Quarterly report | May 13, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 13, 2026 | May 13, 2026 |
| 10-K/A | Amended annual report | Apr 15, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Listing notice
|
Apr 2, 2026 | Apr 1, 2026 |
| 10-K | Annual report | Mar 30, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 25, 2026 | Mar 25, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2026 | — |
| 4 | Insider transaction | Nov 20, 2025 | Nov 18, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2025 | Nov 13, 2025 |
| 10-Q | Quarterly report | Nov 13, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Listing notice
|
Oct 3, 2025 | Oct 2, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 16, 2025 | Sep 16, 2025 |
| 8-K |
Current report
Other events
|
Aug 20, 2025 | Aug 14, 2025 |
| 144 | Notice of proposed sale | Aug 19, 2025 | — |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 8, 2025 | Aug 8, 2025 |
| 8-K |
Current report
Acquisition or sale of assets
|
Aug 7, 2025 | Aug 7, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Other events
|
Aug 1, 2025 | Jul 31, 2025 |
| 8-K |
Current report
Other events
|
Jul 2, 2025 | Jul 2, 2025 |
| 8-K |
Current report
Other events
|
Jun 24, 2025 | Jun 24, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 13, 2025 | Jun 12, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 11, 2025 | Jun 10, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 28, 2025 | — |
| 10-Q | Quarterly report | May 14, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 14, 2025 | May 14, 2025 |
| 8-K |
Current report
Other events
|
May 1, 2025 | Apr 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 30, 2025 | — |
| ARS | Annual report to shareholders | Apr 23, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 23, 2025 | — |
| DEF 14A | Proxy statement | Apr 23, 2025 | Jun 12, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 17, 2025 | Apr 17, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 17, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 15, 2025 | Apr 14, 2025 |
| 8-K |
Current report
Other events
|
Apr 4, 2025 | Apr 4, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 31, 2025 | Mar 31, 2025 |
| 10-K | Annual report | Mar 31, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Restatement
|
Mar 31, 2025 | Mar 25, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 21, 2025 | Mar 21, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 24, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 4, 2025 | Mar 4, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 24, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 24, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 24, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 24, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 25, 2025 | Feb 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 31, 2025 | — |
| 4 | Insider transaction | Jan 22, 2025 | Jan 17, 2025 |
| 4 | Insider transaction | Jan 22, 2025 | Jan 17, 2025 |
| 4 | Insider transaction | Jan 22, 2025 | Jan 17, 2025 |
| 4 | Insider transaction | Jan 22, 2025 | Jan 17, 2025 |
| 4 | Insider transaction | Jan 22, 2025 | Jan 17, 2025 |
| 4 | Insider transaction | Jan 22, 2025 | Jan 17, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 17, 2025 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 13, 2025 | Jan 13, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 7, 2025 | — |
| 8-K |
Current report
Other events
|
Jan 6, 2025 | Jan 6, 2025 |
| 8-K |
Current report
Results of operations
|
Jan 3, 2025 | Jan 3, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Dec 23, 2024 | Dec 23, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 13, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Dec 11, 2024 |
| FWP | Free writing prospectus | Dec 9, 2024 | — |
| 424B5 | Prospectus supplement | Dec 9, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 9, 2024 | Dec 9, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| 4 | Insider transaction | Oct 8, 2024 | Oct 4, 2024 |
| 4 | Insider transaction | Oct 8, 2024 | Oct 4, 2024 |
| 8-K |
Current report
Other events
|
Oct 1, 2024 | Oct 1, 2024 |
| 424B5 | Prospectus supplement | Oct 1, 2024 | — |
| 8-K |
Current report
Results of operations, Other events
|
Oct 1, 2024 | Oct 1, 2024 |
| EFFECT | Filing | Sep 30, 2024 | — |
| CORRESP | Letter to the SEC | Sep 27, 2024 | — |
| S-3/A | Form s-3/a | Sep 26, 2024 | — |
| 8-K |
Current report
Material agreement
|
Aug 20, 2024 | Aug 16, 2024 |
| 4 | Insider transaction | Aug 16, 2024 | Aug 14, 2024 |
| 3 | Initial insider ownership | Aug 16, 2024 | Aug 14, 2024 |
| S-8 | Employee stock plan registration | Aug 16, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Aug 16, 2024 | Aug 13, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2024 | Aug 13, 2024 |
| 10-Q | Quarterly report | Aug 13, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Other events
|
Aug 1, 2024 | Jul 26, 2024 |
| UPLOAD | Letter from the SEC | Jul 31, 2024 | — |
| S-3 | Shelf registration | Jul 26, 2024 | — |
| 424B5 | Prospectus supplement | Jul 26, 2024 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jul 5, 2024 | Jun 28, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2024 | Jun 6, 2024 |
| 8-K |
Current report
Listing notice
|
May 22, 2024 | May 20, 2024 |
| 8-K |
Current report
Results of operations
|
May 9, 2024 | May 9, 2024 |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change
|
May 6, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Apr 19, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 19, 2024 | — |
| DEF 14A | Proxy statement | Apr 19, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 8-K |
Current report
Officer or director change
|
Apr 3, 2024 | Mar 29, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Mar 29, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Mar 23, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Mar 29, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Mar 29, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 15, 2024 | Mar 14, 2024 |
| 10-K | Annual report | Mar 15, 2024 | Dec 31, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| 8-K |
Current report
Listing notice, Other events
|
Jan 17, 2024 | Jan 17, 2024 |
| SC 13G | Ownership over 5% (passive) | Jan 8, 2024 | — |
| 8-K |
Current report
Other events
|
Dec 28, 2023 | Dec 28, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 8-K |
Current report
Other events
|
Dec 13, 2023 | Dec 13, 2023 |
| 424B5 | Prospectus supplement | Dec 11, 2023 | — |
| 8-K |
Current report
Material agreement, Other events
|
Dec 11, 2023 | Dec 11, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2023 | Nov 9, 2023 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Other events
|
Sep 27, 2023 | Sep 27, 2023 |
| 4 | Insider transaction | Sep 20, 2023 | Sep 18, 2023 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Sep 19, 2023 | Sep 18, 2023 |
| 8-K |
Current report
Other events
|
Sep 12, 2023 | Sep 11, 2023 |
| 8-K |
Current report
Officer or director change
|
Sep 1, 2023 | Aug 28, 2023 |
| 3 | Initial insider ownership | Aug 15, 2023 | Aug 7, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 11, 2023 | Aug 11, 2023 |
| 4 | Insider transaction | Aug 8, 2023 | Aug 4, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2023 | Aug 1, 2023 |
| 10-Q | Quarterly report | Aug 1, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jul 19, 2023 | Jul 19, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 8-K |
Current report
Officer or director change
|
Jul 11, 2023 | Jul 7, 2023 |
| 8-K |
Current report
Other events
|
Jul 7, 2023 | Jul 7, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 7, 2023 | Jun 6, 2023 |
| 4 | Insider transaction | May 30, 2023 | May 25, 2023 |
| 4 | Insider transaction | May 12, 2023 | May 10, 2023 |
| 8-K |
Current report
Results of operations
|
May 2, 2023 | May 2, 2023 |
| 10-Q | Quarterly report | May 2, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Other events
|
Apr 26, 2023 | Apr 20, 2023 |
| ARS | Annual report to shareholders | Apr 21, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 21, 2023 | — |
| DEF 14A | Proxy statement | Apr 21, 2023 | Jun 6, 2023 |
| 8-K |
Current report
Officer or director change
|
Apr 20, 2023 | Apr 17, 2023 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Apr 6, 2023 | Mar 31, 2023 |
| 4 | Insider transaction | Apr 5, 2023 | Apr 4, 2023 |
| 4 | Insider transaction | Apr 5, 2023 | Apr 3, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2023 | Mar 9, 2023 |
| 10-K | Annual report | Mar 9, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Mar 1, 2023 | Feb 27, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 4 | Insider transaction | Feb 8, 2023 | Feb 6, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 7, 2023 | — |
| 8-K |
Current report
Results of operations, Other events
|
Feb 1, 2023 | Jan 31, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
Dec 29, 2022 | Dec 28, 2022 |
| 4 | Insider transaction | Dec 9, 2022 | Dec 8, 2022 |
| 4 | Insider transaction | Dec 8, 2022 | Dec 6, 2022 |
| 8-K |
Current report
Other events
|
Nov 16, 2022 | Nov 14, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2022 | Nov 3, 2022 |
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
- Surgical & Medical Instruments & Apparatus (SIC 3841)
- Listed as
- CTSO (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Princeton, NJ
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1175151
- Former names
- MedaSorb Technologies CORP (until Apr 15, 2010); GILDER ENTERPRISES INC (until Jul 24, 2006)
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All 151 Surgical & Medical Instruments & Apparatus companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.