CCCC - CIK 0001662579
C4 Therapeutics, Inc. has filed 516 documents with the SEC between 2016 and 2026. The most frequent type is insider trade (245 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| SCHEDULE 13G | - | 2026-05-19 | - |
| Major company event | 8-K | 2026-05-15 | 2026-05-15 |
| SCHEDULE 13G/A | - | 2026-05-15 | - |
| SCHEDULE 13G | - | 2026-05-15 | - |
| Quarterly report | 10-Q | 2026-05-12 | 2026-03-31 |
| Major company event | 8-K | 2026-05-12 | 2026-05-12 |
| Annual report to shareholders | ARS | 2026-04-29 | 2026-04-29 |
| Proxy materials | DEFA14A | 2026-04-29 | - |
| Proxy statement | DEF 14A | 2026-04-29 | 2026-04-29 |
| SCHEDULE 13G/A | - | 2026-04-22 | - |
| Major company event | 8-K | 2026-04-10 | 2026-04-10 |
| Major company event | 8-K | 2026-04-09 | 2026-04-09 |
| Insider trade | 4 | 2026-04-03 | 2026-04-01 |
| Insider trade | 4 | 2026-04-03 | 2026-04-01 |
| Insider sale notice | 144 | 2026-03-09 | - |
| Employee stock plan | S-8 | 2026-02-26 | - |
| Annual report | 10-K | 2026-02-26 | 2025-12-31 |
| Major company event | 8-K | 2026-02-26 | 2026-02-26 |
| Insider trade | 4 | 2026-02-18 | 2026-02-13 |
| Insider trade | 4 | 2026-02-18 | 2026-02-13 |
| Insider trade | 4 | 2026-02-18 | 2026-02-13 |
| Insider trade | 4 | 2026-02-18 | 2026-02-13 |
| Insider trade | 4 | 2026-02-18 | 2026-02-13 |
| Insider trade | 4 | 2026-02-18 | 2026-02-13 |
| Insider trade | 4 | 2026-02-18 | 2026-02-13 |
| SCHEDULE 13G/A | - | 2026-02-17 | - |
| SCHEDULE 13G/A | - | 2026-02-17 | - |
| SCHEDULE 13G/A | - | 2026-02-12 | - |
| SCHEDULE 13G/A | - | 2026-02-11 | - |
| Insider trade | 4 | 2026-01-16 | 2026-01-16 |
| Major company event | 8-K | 2026-01-14 | 2026-01-14 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| EFFECT | - | 2025-12-10 | - |
| Prospectus supplement | 424B5 | 2025-12-10 | - |
| Company correspondence | CORRESP | 2025-12-08 | - |
| Securities registration | S-3 | 2025-11-21 | - |
| SCHEDULE 13G/A | - | 2025-11-14 | - |
| SCHEDULE 13G/A | - | 2025-11-13 | - |
| Quarterly report | 10-Q | 2025-11-06 | 2025-09-30 |
| Major company event | 8-K | 2025-11-06 | 2025-11-06 |
| Insider trade | 4 | 2025-10-30 | 2025-10-28 |
| SCHEDULE 13G | - | 2025-10-24 | - |
| SCHEDULE 13G | - | 2025-10-24 | - |
| SCHEDULE 13G | - | 2025-10-20 | - |
| Major company event | 8-K | 2025-10-16 | 2025-10-16 |
| Major company event | 8-K | 2025-10-16 | 2025-10-16 |
| Prospectus supplement | 424B5 | 2025-10-16 | - |
| Free writing prospectus | FWP | 2025-10-16 | - |
| Insider trade | 4 | 2025-10-03 | 2025-10-01 |