C4 Therapeutics, Inc. SEC filings CCCC
C4 Therapeutics, Inc. has 546 filings in SEC EDGAR's recent list, going back to Jan 11, 2016. Its latest annual report, Form ARS, was filed on Apr 29, 2026 for the period ended Apr 29, 2026. The latest quarterly report (Form 10-Q) was filed on Aug 11, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 25, 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 25, 2026 | Sep 25, 2026 |
| 10-Q | Quarterly report | Aug 11, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2026 | Aug 11, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 24, 2026 | Jun 24, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 11, 2026 | Jun 11, 2026 |
| 8-K |
Current report
Officer or director change
|
May 15, 2026 | May 15, 2026 |
| 10-Q | Quarterly report | May 12, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 12, 2026 | May 12, 2026 |
| ARS | Annual report to shareholders | Apr 29, 2026 | Apr 29, 2026 |
| DEFA14A | Additional proxy material | Apr 29, 2026 | — |
| DEF 14A | Proxy statement | Apr 29, 2026 | Apr 29, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Apr 10, 2026 | Apr 10, 2026 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Apr 9, 2026 | Apr 9, 2026 |
| S-8 | Employee stock plan registration | Feb 26, 2026 | — |
| 10-K | Annual report | Feb 26, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2026 | Feb 26, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 14, 2026 | Jan 14, 2026 |
| EFFECT | Filing | Dec 10, 2025 | — |
| 424B5 | Prospectus supplement | Dec 10, 2025 | — |
| CORRESP | Letter to the SEC | Dec 8, 2025 | — |
| S-3 | Shelf registration | Nov 21, 2025 | — |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| 8-K |
Current report
Material agreement
|
Oct 16, 2025 | Oct 16, 2025 |
| 424B5 | Prospectus supplement | Oct 16, 2025 | — |
| FWP | Free writing prospectus | Oct 16, 2025 | — |
| 8-K |
Current report
Other events
|
Oct 16, 2025 | Oct 16, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Oct 1, 2025 | Oct 1, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 22, 2025 | Sep 22, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
Aug 7, 2025 | Aug 7, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Jun 18, 2025 | Jun 18, 2025 |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
May 7, 2025 | May 7, 2025 |
| ARS | Annual report to shareholders | Apr 29, 2025 | Apr 29, 2025 |
| DEFA14A | Additional proxy material | Apr 29, 2025 | — |
| DEF 14A | Proxy statement | Apr 29, 2025 | Apr 29, 2025 |
| PRE 14A | Preliminary proxy statement | Apr 16, 2025 | Apr 16, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 14, 2025 | Apr 14, 2025 |
| S-8 | Employee stock plan registration | Feb 27, 2025 | — |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2025 | Feb 27, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 14, 2025 | Jan 14, 2025 |
| 8-K |
Current report
Other events
|
Dec 9, 2024 | Dec 9, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 20, 2024 | Nov 20, 2024 |
| 424B3 | Prospectus | Nov 15, 2024 | — |
| 424B5 | Prospectus supplement | Nov 15, 2024 | — |
| EFFECT | Filing | Nov 13, 2024 | — |
| EFFECT | Filing | Nov 13, 2024 | — |
| SUPPL | Filing | Nov 13, 2024 | — |
| SUPPL | Filing | Nov 13, 2024 | — |
| CORRESP | Letter to the SEC | Nov 8, 2024 | — |
| CORRESP | Letter to the SEC | Nov 8, 2024 | — |
| UPLOAD | Letter from the SEC | Nov 7, 2024 | — |
| UPLOAD | Letter from the SEC | Nov 7, 2024 | — |
| S-3 | Shelf registration | Oct 31, 2024 | — |
| S-3 | Shelf registration | Oct 31, 2024 | — |
| 10-Q | Quarterly report | Oct 31, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2024 | Oct 31, 2024 |
| 8-K/A |
Amended current report
Officer or director change, Regulation FD disclosure
|
Oct 16, 2024 | Oct 15, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 15, 2024 | Oct 15, 2024 |
| 8-K |
Current report
Officer or director change
|
Oct 11, 2024 | Oct 11, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Sep 3, 2024 | Sep 3, 2024 |
| 10-Q | Quarterly report | Aug 1, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 1, 2024 | Aug 1, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 21, 2024 | Jun 21, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 10, 2024 | Jun 10, 2024 |
| 10-Q | Quarterly report | May 8, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 8, 2024 | May 8, 2024 |
| ARS | Annual report to shareholders | Apr 30, 2024 | Apr 30, 2024 |
| DEFA14A | Additional proxy material | Apr 29, 2024 | — |
| DEF 14A | Proxy statement | Apr 29, 2024 | Apr 29, 2024 |
| 8-K |
Current report
Officer or director change
|
Mar 8, 2024 | Mar 8, 2024 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Mar 4, 2024 | Mar 4, 2024 |
| S-8 | Employee stock plan registration | Feb 22, 2024 | — |
| 10-K | Annual report | Feb 22, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 22, 2024 | Feb 22, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 11, 2024 | Jan 11, 2024 |
| 8-K |
Current report
Exit or restructuring costs, Regulation FD disclosure
|
Jan 9, 2024 | Jan 9, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 12, 2023 | Dec 12, 2023 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Dec 12, 2023 | Dec 12, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 20, 2023 | Nov 20, 2023 |
| 10-Q | Quarterly report | Nov 1, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 1, 2023 | Nov 1, 2023 |
| 8-K |
Current report
Officer or director change
|
Sep 5, 2023 | Sep 5, 2023 |
| 10-Q | Quarterly report | Aug 8, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2023 | Aug 8, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 20, 2023 | Jun 20, 2023 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
May 30, 2023 | May 29, 2023 |
| 10-Q | Quarterly report | May 4, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| EFFECT | Filing | May 3, 2023 | — |
| ARS | Annual report to shareholders | Apr 28, 2023 | Apr 27, 2023 |
| DEFA14A | Additional proxy material | Apr 28, 2023 | — |
| DEF 14A | Proxy statement | Apr 28, 2023 | — |
| PRE 14A | Preliminary proxy statement | Apr 18, 2023 | — |
| 8-K/A |
Amended current report
Results of operations
|
Feb 23, 2023 | Feb 23, 2023 |
| S-8 | Employee stock plan registration | Feb 23, 2023 | — |
| POS AM | Filing | Feb 23, 2023 | — |
| 10-K | Annual report | Feb 23, 2023 | Dec 31, 2022 |
| POSASR | Filing | Feb 23, 2023 | — |
| 8-K |
Current report
Results of operations
|
Feb 23, 2023 | Feb 23, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 2, 2023 | Jan 30, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 9, 2023 | Jan 9, 2023 |
| 10-Q | Quarterly report | Nov 3, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2022 | Nov 3, 2022 |
| 8-K/A |
Amended current report
Shareholder vote results
|
Sep 22, 2022 | Jun 22, 2022 |
| 10-Q | Quarterly report | Aug 4, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 2, 2022 | Jul 29, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 24, 2022 | Jun 22, 2022 |
| DEFA14A | Additional proxy material | Jun 17, 2022 | — |
| 8-K |
Current report
Officer or director change
|
Jun 17, 2022 | Jun 15, 2022 |
| 8-K |
Current report
Other events
|
May 16, 2022 | May 16, 2022 |
| DEFA14A | Additional proxy material | May 12, 2022 | — |
| 10-Q | Quarterly report | May 5, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 5, 2022 | May 5, 2022 |
| DEFA14A | Additional proxy material | Apr 29, 2022 | — |
| DEF 14A | Proxy statement | Apr 29, 2022 | Jun 22, 2022 |
| 8-K |
Current report
Other events
|
Apr 8, 2022 | Apr 8, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 16, 2022 | Mar 10, 2022 |
| S-8 | Employee stock plan registration | Feb 24, 2022 | — |
| 10-K | Annual report | Feb 24, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2022 | Feb 24, 2022 |
| 8-K/A | Amended current report | Jan 21, 2022 | Jan 10, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 10, 2022 | Jan 10, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Nov 30, 2021 | Nov 24, 2021 |
| S-3ASR | Automatic shelf registration | Nov 10, 2021 | — |
| 10-Q | Quarterly report | Nov 10, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2021 | Nov 10, 2021 |
| 10-Q | Quarterly report | Aug 11, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 11, 2021 | Aug 11, 2021 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Jun 21, 2021 | Jun 15, 2021 |
| 424B4 | Prospectus | Jun 21, 2021 | — |
| EFFECT | Filing | Jun 16, 2021 | — |
| CORRESP | Letter to the SEC | Jun 14, 2021 | — |
| CORRESP | Letter to the SEC | Jun 14, 2021 | — |
| 8-K |
Current report
Other events
|
Jun 14, 2021 | Jun 14, 2021 |
| S-1 | Registration statement | Jun 14, 2021 | — |
| 8-K |
Current report
Other events
|
Jun 7, 2021 | Jun 7, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
May 26, 2021 | May 26, 2021 |
| UPLOAD | Letter from the SEC | May 21, 2021 | — |
| 8-K |
Current report
Officer or director change
|
May 20, 2021 | May 20, 2021 |
| DRS | Filing | May 19, 2021 | — |
| 10-Q | Quarterly report | May 13, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 13, 2021 | May 13, 2021 |
| 8-K |
Current report
Officer or director change
|
Apr 30, 2021 | Apr 27, 2021 |
| DEFA14A | Additional proxy material | Apr 26, 2021 | — |
| DEF 14A | Proxy statement | Apr 26, 2021 | Jun 15, 2021 |
| S-8 | Employee stock plan registration | Mar 11, 2021 | — |
| 10-K | Annual report | Mar 11, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Mar 11, 2021 | Mar 10, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 12, 2021 | Jan 6, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 6, 2021 | Jan 6, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 19, 2020 | Nov 18, 2020 |
| 10-Q | Quarterly report | Nov 12, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2020 | Nov 12, 2020 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change
|
Oct 6, 2020 | Oct 1, 2020 |
| S-8 | Employee stock plan registration | Oct 2, 2020 | — |
| 424B4 | Prospectus | Oct 2, 2020 | — |
| EFFECT | Filing | Oct 1, 2020 | — |
| S-1MEF | Filing | Oct 1, 2020 | — |
| CERT | Filing | Oct 1, 2020 | — |
| CORRESP | Letter to the SEC | Sep 29, 2020 | — |
| CORRESP | Letter to the SEC | Sep 29, 2020 | — |
| SEC STAFF LETTER | Filing | Sep 28, 2020 | — |
| 8-A12B | Filing | Sep 28, 2020 | — |
| S-1/A | Amended registration statement | Sep 28, 2020 | — |
| CORRESP | Letter to the SEC | Sep 15, 2020 | — |
| SEC STAFF LETTER | Filing | Sep 11, 2020 | — |
| CORRESP | Letter to the SEC | Sep 10, 2020 | — |
| S-1 | Registration statement | Sep 10, 2020 | — |
| UPLOAD | Letter from the SEC | Sep 2, 2020 | — |
| DRS | Filing | Aug 6, 2020 | — |
| D | Filing | Jan 11, 2016 | — |
Showing 175 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
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- CCCC (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Watertown, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1662579
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.