Cartesian Therapeutics, Inc. SEC filings RNAC
Cartesian Therapeutics, Inc. has 876 filings in SEC EDGAR's recent list, going back to Jan 5, 2009. Its latest annual report, Form 10-K, was filed on Mar 9, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 29, 2026 | Sep 29, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 13, 2026 | — |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 22, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 17, 2026 | Jun 12, 2026 |
| 144 | Notice of proposed sale | Jun 9, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 9, 2026 | Jun 9, 2026 |
| 144 | Notice of proposed sale | Jun 2, 2026 | — |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Officer or director change, Regulation FD disclosure
|
May 26, 2026 | May 22, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 6, 2026 | — |
| S-8 | Employee stock plan registration | Apr 30, 2026 | — |
| 10-Q | Quarterly report | Apr 30, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2026 | Apr 30, 2026 |
| DEF 14A | Proxy statement | Apr 28, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 28, 2026 | — |
| 4 | Insider transaction | Apr 6, 2026 | Apr 2, 2026 |
| 4 | Insider transaction | Apr 6, 2026 | Apr 2, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 2, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Mar 30, 2026 | Mar 26, 2026 |
| 4 | Insider transaction | Mar 13, 2026 | Mar 13, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 13, 2026 | — |
| 10-K | Annual report | Mar 9, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2026 | Mar 9, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2026 | — |
| 144 | Notice of proposed sale | Jan 13, 2026 | — |
| 144 | Notice of proposed sale | Jan 9, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 9, 2026 | Jan 9, 2026 |
| 4 | Insider transaction | Jan 8, 2026 | Jan 6, 2026 |
| 4 | Insider transaction | Jan 8, 2026 | Jan 6, 2026 |
| 4 | Insider transaction | Jan 8, 2026 | Jan 6, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 2, 2026 | Dec 30, 2025 |
| 4 | Insider transaction | Dec 18, 2025 | Dec 16, 2025 |
| 3 | Initial insider ownership | Dec 18, 2025 | Dec 16, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 18, 2025 | Dec 16, 2025 |
| 4 | Insider transaction | Dec 8, 2025 | Dec 4, 2025 |
| 4 | Insider transaction | Dec 2, 2025 | Nov 28, 2025 |
| 4 | Insider transaction | Nov 19, 2025 | Nov 18, 2025 |
| 144 | Notice of proposed sale | Nov 19, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Nov 13, 2025 | Nov 13, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2025 | — |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure
|
Oct 30, 2025 | Oct 29, 2025 |
| 4 | Insider transaction | Oct 28, 2025 | Oct 27, 2025 |
| 3 | Initial insider ownership | Oct 28, 2025 | Oct 27, 2025 |
| 8-K |
Current report
Officer or director change
|
Oct 21, 2025 | Oct 15, 2025 |
| 8-K |
Current report
Officer or director change
|
Oct 8, 2025 | Oct 2, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 16, 2025 | Jun 13, 2025 |
| 8-K |
Current report
Other events
|
May 30, 2025 | May 30, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 12, 2025 |
| S-8 | Employee stock plan registration | May 8, 2025 | — |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 29, 2025 | Apr 29, 2025 |
| DEF 14A | Proxy statement | Apr 28, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 28, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 25, 2025 | — |
| 4 | Insider transaction | Apr 16, 2025 | Apr 15, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 9, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 8, 2025 | Apr 8, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 18, 2025 |
| 10-K | Annual report | Mar 13, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 13, 2025 | Mar 13, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 3, 2025 | Mar 3, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2025 | — |
| 8-K |
Current report
Other events
|
Jan 27, 2025 | Jan 27, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jan 15, 2025 | — |
| 4 | Insider transaction | Jan 15, 2025 | Jan 13, 2025 |
| EFFECT | Filing | Jan 13, 2025 | — |
| EFFECT | Filing | Jan 13, 2025 | — |
| 4 | Insider transaction | Jan 13, 2025 | Jan 10, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 13, 2025 | Jan 13, 2025 |
| POS AM | Filing | Jan 10, 2025 | — |
| POS AM | Filing | Jan 10, 2025 | — |
| EFFECT | Filing | Jan 8, 2025 | — |
| EFFECT | Filing | Jan 8, 2025 | — |
| EFFECT | Filing | Jan 8, 2025 | — |
| 424B7 | Filing | Jan 8, 2025 | — |
| 424B7 | Filing | Jan 8, 2025 | — |
| 424B3 | Prospectus | Jan 8, 2025 | — |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| CORRESP | Letter to the SEC | Jan 6, 2025 | — |
| CORRESP | Letter to the SEC | Jan 6, 2025 | — |
| CORRESP | Letter to the SEC | Jan 6, 2025 | — |
| 4 | Insider transaction | Dec 30, 2024 | Dec 26, 2024 |
| 4 | Insider transaction | Dec 30, 2024 | Dec 26, 2024 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 23, 2024 | — |
| 4 | Insider transaction | Dec 23, 2024 | Dec 19, 2024 |
| UPLOAD | Letter from the SEC | Dec 19, 2024 | — |
| UPLOAD | Letter from the SEC | Dec 19, 2024 | — |
| UPLOAD | Letter from the SEC | Dec 19, 2024 | — |
| S-3 | Shelf registration | Dec 13, 2024 | — |
| S-3 | Shelf registration | Dec 13, 2024 | — |
| S-3 | Shelf registration | Dec 13, 2024 | — |
| 4 | Insider transaction | Dec 11, 2024 | Dec 9, 2024 |
| 144 | Notice of proposed sale | Dec 10, 2024 | — |
| 144 | Notice of proposed sale | Dec 9, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 3, 2024 | Dec 3, 2024 |
| 4 | Insider transaction | Nov 21, 2024 | Nov 19, 2024 |
| 4 | Insider transaction | Nov 21, 2024 | Nov 19, 2024 |
| 4 | Insider transaction | Nov 21, 2024 | Nov 20, 2024 |
| 144 | Notice of proposed sale | Nov 21, 2024 | — |
| 144 | Notice of proposed sale | Nov 20, 2024 | — |
| 144 | Notice of proposed sale | Nov 19, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 18, 2024 | — |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 4 | Insider transaction | Nov 18, 2024 | Nov 14, 2024 |
| 144 | Notice of proposed sale | Nov 18, 2024 | — |
| 144 | Notice of proposed sale | Nov 15, 2024 | — |
| 144 | Notice of proposed sale | Nov 15, 2024 | — |
| 144 | Notice of proposed sale | Nov 15, 2024 | — |
| 144 | Notice of proposed sale | Nov 14, 2024 | — |
| 144 | Notice of proposed sale | Nov 14, 2024 | — |
| 144 | Notice of proposed sale | Nov 14, 2024 | — |
| S-8 | Employee stock plan registration | Nov 7, 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 15, 2024 | Oct 11, 2024 |
| 4 | Insider transaction | Oct 15, 2024 | Oct 11, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 15, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Oct 4, 2024 | — |
| 4 | Insider transaction | Oct 4, 2024 | Oct 2, 2024 |
| EFFECT | Filing | Oct 1, 2024 | — |
| 424B7 | Filing | Oct 1, 2024 | — |
| CORRESP | Letter to the SEC | Sep 27, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Sep 27, 2024 | — |
| 4 | Insider transaction | Sep 27, 2024 | Sep 25, 2024 |
| 8-K |
Current report
Other events
|
Sep 26, 2024 | Sep 25, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Sep 23, 2024 | Sep 20, 2024 |
| CORRESP | Letter to the SEC | Sep 20, 2024 | — |
| S-1/A | Amended registration statement | Sep 20, 2024 | — |
| UPLOAD | Letter from the SEC | Sep 16, 2024 | — |
| CORRESP | Letter to the SEC | Sep 9, 2024 | — |
| S-1/A | Amended registration statement | Sep 9, 2024 | — |
| UPLOAD | Letter from the SEC | Aug 29, 2024 | — |
| DEF 14A | Proxy statement | Aug 16, 2024 | Sep 20, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| SC 13G | Ownership over 5% (passive) | Aug 12, 2024 | — |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 8, 2024 | Aug 8, 2024 |
| PRE 14A | Preliminary proxy statement | Aug 2, 2024 | Aug 2, 2024 |
| S-1 | Registration statement | Aug 2, 2024 | — |
| D | Filing | Jul 17, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 12, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jul 5, 2024 | — |
| 4 | Insider transaction | Jul 5, 2024 | Jul 2, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 3 | Initial insider ownership | Jul 3, 2024 | Jul 1, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure, Other events
|
Jul 2, 2024 | Jul 1, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 17, 2024 | Jun 14, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
May 22, 2024 | May 22, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | May 10, 2024 | — |
| 10-Q | Quarterly report | May 8, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 8, 2024 | May 8, 2024 |
| DEF 14A | Proxy statement | Apr 26, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 26, 2024 | — |
| 8-K |
Current report
Other events
|
Apr 22, 2024 | Apr 19, 2024 |
| 3 | Initial insider ownership | Apr 19, 2024 | Apr 9, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 12, 2024 | — |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- RNAC (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Frederick, MD
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1453687
- Former names
- SELECTA BIOSCIENCES INC (until Nov 13, 2023)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.