TScan Therapeutics, Inc. SEC filings TCRX
TScan Therapeutics, Inc. has 334 filings in SEC EDGAR's recent list, going back to Jul 26, 2019. Its latest annual report, Form ARS, was filed on Apr 17, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 12, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 16, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| DEF 14A | Proxy statement | Oct 26, 2026 | Nov 20, 2026 |
| PRE 14A | Preliminary proxy statement | Oct 16, 2026 | Nov 20, 2026 |
| 8-K |
Current report
Officer or director change
|
Oct 16, 2026 | Oct 13, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 8-K |
Current report
Officer or director change
|
Sep 30, 2026 | Sep 24, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 25, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Sep 11, 2026 | Sep 8, 2026 |
| 8-K |
Current report
Exit or restructuring costs, Listing notice, Officer or director change, Regulation FD disclosure, Other events
|
Sep 2, 2026 | Aug 27, 2026 |
| 8-K |
Current report
Agreement ended
|
Aug 18, 2026 | Aug 12, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 10-Q | Quarterly report | Aug 12, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2026 | Aug 12, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 22, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 6, 2026 | May 6, 2026 |
| ARS | Annual report to shareholders | Apr 17, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 17, 2026 | May 20, 2026 |
| PRE 14A | Preliminary proxy statement | Apr 7, 2026 | May 20, 2026 |
| 8-K |
Current report
Officer or director change
|
Apr 2, 2026 | Mar 31, 2026 |
| S-8 | Employee stock plan registration | Mar 4, 2026 | — |
| 10-K | Annual report | Mar 4, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 4, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Dec 23, 2025 | Dec 19, 2025 |
| 8-K |
Current report
Officer or director change
|
Nov 26, 2025 | Nov 25, 2025 |
| 10-Q | Quarterly report | Nov 12, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2025 | Nov 12, 2025 |
| 8-K |
Current report
Exit or restructuring costs, Regulation FD disclosure, Other events
|
Nov 3, 2025 | Nov 3, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 9, 2025 | Sep 9, 2025 |
| 3 | Initial insider ownership | Aug 22, 2025 | Aug 14, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 20, 2025 | Aug 14, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 12, 2025 | — |
| 10-Q | Quarterly report | Aug 12, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2025 | Aug 12, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 16, 2025 | — |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jul 2, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| ARS | Annual report to shareholders | May 14, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | May 14, 2025 | — |
| DEF 14A | Proxy statement | May 14, 2025 | Jun 30, 2025 |
| 10-Q | Quarterly report | May 6, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 6, 2025 | May 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 24, 2025 | — |
| EFFECT | Filing | Mar 14, 2025 | — |
| CORRESP | Letter to the SEC | Mar 12, 2025 | — |
| UPLOAD | Letter from the SEC | Mar 11, 2025 | — |
| S-8 | Employee stock plan registration | Mar 5, 2025 | — |
| S-3 | Shelf registration | Mar 5, 2025 | — |
| 10-K | Annual report | Mar 5, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2025 | Mar 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2025 | — |
| 4 | Insider transaction | Feb 11, 2025 | Jan 12, 2024 |
| 4 | Insider transaction | Feb 11, 2025 | Jan 12, 2024 |
| 4 | Insider transaction | Feb 11, 2025 | Jan 12, 2024 |
| 4 | Insider transaction | Feb 11, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Feb 11, 2025 | Jan 3, 2025 |
| 4 | Insider transaction | Dec 30, 2024 | Dec 26, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Dec 26, 2024 | Dec 26, 2024 |
| 424B5 | Prospectus supplement | Dec 26, 2024 | — |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Regulation FD disclosure
|
Dec 23, 2024 | Dec 20, 2024 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 12, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 10, 2024 | Dec 9, 2024 |
| 8-K |
Current report
Unregistered share sale
|
Nov 21, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 10-Q | Quarterly report | Nov 12, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2024 | Nov 12, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2024 | — |
| 8-K |
Current report
Material agreement
|
Nov 1, 2024 | Oct 28, 2024 |
| SC 13G | Ownership over 5% (passive) | Oct 21, 2024 | — |
| 4 | Insider transaction | Sep 24, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Aug 27, 2024 | Aug 23, 2024 |
| 4 | Insider transaction | Aug 27, 2024 | Aug 23, 2024 |
| 144 | Notice of proposed sale | Aug 23, 2024 | — |
| 10-Q | Quarterly report | Aug 12, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 3 | Initial insider ownership | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| S-8 | Employee stock plan registration | Jun 14, 2024 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 14, 2024 | Jun 12, 2024 |
| 10-Q | Quarterly report | May 13, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 13, 2024 | May 13, 2024 |
| 4 | Insider transaction | May 3, 2024 | May 1, 2024 |
| 3 | Initial insider ownership | May 2, 2024 | Apr 22, 2024 |
| ARS | Annual report to shareholders | Apr 30, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 30, 2024 | — |
| DEF 14A | Proxy statement | Apr 30, 2024 | Jun 12, 2024 |
| SC 13G | Ownership over 5% (passive) | Apr 29, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 23, 2024 | — |
| 4 | Insider transaction | Apr 23, 2024 | Apr 19, 2024 |
| 4 | Insider transaction | Apr 23, 2024 | Apr 19, 2024 |
| 424B5 | Prospectus supplement | Apr 18, 2024 | — |
| 8-K |
Current report
Material agreement, Results of operations, Other events
|
Apr 17, 2024 | Apr 16, 2024 |
| FWP | Free writing prospectus | Apr 17, 2024 | — |
| 424B5 | Prospectus supplement | Apr 16, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 16, 2024 | Apr 16, 2024 |
| EFFECT | Filing | Apr 12, 2024 | — |
| CORRESP | Letter to the SEC | Apr 10, 2024 | — |
| 10-K/A | Amended annual report | Apr 10, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Other events
|
Apr 8, 2024 | Apr 8, 2024 |
| UPLOAD | Letter from the SEC | Mar 7, 2024 | — |
| S-3 | Shelf registration | Mar 6, 2024 | — |
| S-8 | Employee stock plan registration | Mar 6, 2024 | — |
| 10-K | Annual report | Mar 6, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 6, 2024 | Mar 6, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2024 | — |
| 4 | Insider transaction | Feb 2, 2024 | Feb 1, 2024 |
| 3 | Initial insider ownership | Feb 2, 2024 | Jan 29, 2024 |
| 8-K |
Current report
Officer or director change
|
Jan 29, 2024 | Jan 24, 2024 |
| 4 | Insider transaction | Dec 21, 2023 | Dec 18, 2023 |
| 4 | Insider transaction | Dec 18, 2023 | Dec 14, 2023 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 11, 2023 | Dec 9, 2023 |
| 4 | Insider transaction | Dec 8, 2023 | Dec 6, 2023 |
| 3 | Initial insider ownership | Dec 8, 2023 | Dec 6, 2023 |
| 8-K |
Current report
Officer or director change
|
Dec 7, 2023 | Dec 6, 2023 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2023 | Nov 9, 2023 |
| 10-Q | Quarterly report | Aug 10, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 8-K |
Current report
Officer or director change
|
Jul 25, 2023 | Jul 20, 2023 |
| 4 | Insider transaction | Jul 24, 2023 | Jul 21, 2023 |
| 3 | Initial insider ownership | Jul 24, 2023 | Jul 21, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 29, 2023 | Jun 27, 2023 |
| S-8 | Employee stock plan registration | Jun 16, 2023 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 16, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| 4 | Insider transaction | Jun 15, 2023 | Jun 13, 2023 |
| SC 13G | Ownership over 5% (passive) | Jun 12, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 8, 2023 | — |
| 4 | Insider transaction | Jun 6, 2023 | Jun 2, 2023 |
| SC 13G | Ownership over 5% (passive) | Jun 5, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Jun 5, 2023 | — |
| 3 | Initial insider ownership | Jun 5, 2023 | May 26, 2023 |
| 4 | Insider transaction | Jun 2, 2023 | May 31, 2023 |
| 3 | Initial insider ownership | Jun 2, 2023 | May 31, 2023 |
| SC 13G | Ownership over 5% (passive) | Jun 2, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 2, 2023 | — |
| DEFA14A | Additional proxy material | Jun 2, 2023 | — |
| 4 | Insider transaction | Jun 2, 2023 | Jun 1, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
May 31, 2023 | May 25, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 31, 2023 | May 24, 2023 |
| 424B5 | Prospectus supplement | May 30, 2023 | — |
| FWP | Free writing prospectus | May 26, 2023 | — |
| 424B5 | Prospectus supplement | May 25, 2023 | — |
| 8-K |
Current report
Other events
|
May 17, 2023 | May 17, 2023 |
| EFFECT | Filing | May 16, 2023 | — |
| EFFECT | Filing | May 16, 2023 | — |
| 8-K |
Current report
Other events
|
May 16, 2023 | May 16, 2023 |
| 424B5 | Prospectus supplement | May 16, 2023 | — |
| AW | Filing | May 16, 2023 | — |
| S-3/A | Filing | May 16, 2023 | — |
| S-3/A | Filing | May 16, 2023 | — |
| S-3/A | Filing | May 16, 2023 | — |
| CORRESP | Letter to the SEC | May 15, 2023 | — |
| CORRESP | Letter to the SEC | May 15, 2023 | — |
| 144 | Notice of proposed sale | May 15, 2023 | — |
| CORRESP | Letter to the SEC | May 10, 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
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- TCRX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Waltham, MA
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1783328
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All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.