# C4 Therapeutics, Inc.: filings

CCCC · Nasdaq · CIK 1662579 · [Healthcare](/sectors/healthcare.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/cccc.md) · [Financials](/companies/cccc/financials.md) · [Filings](/companies/cccc/filings.md) · [Insiders](/companies/cccc/insiders.md)

## Reports and events: 114 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 260, 8-K 75, 3 27, SC 13G/A 21, 10-Q 18, SC 13G 16, SCHEDULE 13G/A 13, 144 9, CORRESP 9, 4/A 8, DEFA14A 8, S-8 7, 10-K 6, DEF 14A 6, EFFECT 6, SCHEDULE 13G 5, 8-K/A 4, ARS 4, UPLOAD 4, 424B5 3, S-3 3, 424B4 2, DRS 2, PRE 14A 2, S-1 2, SEC STAFF LETTER 2, SUPPL 2, 424B3 1, 8-A12B 1, CERT 1, D 1, FWP 1, POS AM 1, POSASR 1, S-1/A 1, S-1MEF 1, S-3ASR 1, SC 13D 1, SC 13D/A 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-09-25 | 11:04 ET | [8-K](/filings/0001628280-26-063497.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-26-063497 |
| 2026-08-11 | 11:29 ET | [10-Q](/filings/0001628280-26-055494.md) | Quarterly report, period 2026-06-30 | 0001628280-26-055494 |
| 2026-08-11 | 11:14 ET | [8-K](/filings/0001628280-26-055490.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-055490 |
| 2026-06-24 | 20:22 ET | [8-K](/filings/0001628280-26-045194.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001628280-26-045194 |
| 2026-06-11 | 11:04 ET | [8-K](/filings/0001628280-26-042365.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-26-042365 |
| 2026-05-15 | 20:03 ET | [8-K](/filings/0001628280-26-035542.md) | 5.02 Departure or appointment of officers or directors | 0001628280-26-035542 |
| 2026-05-12 | 11:07 ET | [10-Q](/filings/0001628280-26-033865.md) | Quarterly report, period 2026-03-31 | 0001628280-26-033865 |
| 2026-05-12 | 11:05 ET | [8-K](/filings/0001628280-26-033861.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-26-033861 |
| 2026-04-29 | 11:00 ET | [DEF 14A](/filings/0001628280-26-028104.md) | Proxy statement, period 2026-04-29 | 0001628280-26-028104 |
| 2026-04-10 | 11:17 ET | [8-K](/filings/0001628280-26-024583.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001628280-26-024583 |
| 2026-04-09 | 11:07 ET | [8-K](/filings/0001628280-26-024336.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-26-024336 |
| 2026-02-26 | 12:49 ET | [10-K](/filings/0001628280-26-012000.md) | Annual report, period 2025-12-31 | 0001628280-26-012000 |
| 2026-02-26 | 12:09 ET | [8-K](/filings/0001628280-26-011971.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-011971 |
| 2026-01-14 | 12:12 ET | [8-K](/filings/0001628280-26-002010.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-26-002010 |
| 2025-11-06 | 12:12 ET | [10-Q](/filings/0001628280-25-049854.md) | Quarterly report, period 2025-09-30 | 0001628280-25-049854 |
| 2025-11-06 | 12:06 ET | [8-K](/filings/0001628280-25-049850.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-25-049850 |
| 2025-10-16 | 21:29 ET | [8-K](/filings/0001193125-25-241591.md) | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-25-241591 |
| 2025-10-16 | 10:30 ET | [8-K](/filings/0001628280-25-045157.md) | 8.01 Other events | 0001628280-25-045157 |
| 2025-10-01 | 11:06 ET | [8-K](/filings/0001628280-25-043290.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-25-043290 |
| 2025-09-22 | 10:41 ET | [8-K](/filings/0001628280-25-042245.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-25-042245 |
| 2025-08-07 | 11:11 ET | [10-Q](/filings/0001628280-25-038587.md) | Quarterly report, period 2025-06-30 | 0001628280-25-038587 |
| 2025-08-07 | 11:04 ET | [8-K](/filings/0001628280-25-038576.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-25-038576 |
| 2025-06-18 | 20:50 ET | [8-K](/filings/0001628280-25-032155.md) | 5.03 Amendment to articles or bylaws; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001628280-25-032155 |
| 2025-05-07 | 11:08 ET | [10-Q](/filings/0001628280-25-022866.md) | Quarterly report, period 2025-03-31 | 0001628280-25-022866 |
| 2025-05-07 | 11:06 ET | [8-K](/filings/0001628280-25-022864.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-25-022864 |
| 2025-04-29 | 11:01 ET | [DEF 14A](/filings/0001628280-25-020466.md) | Proxy statement, period 2025-04-29 | 0001628280-25-020466 |
| 2025-04-14 | 12:17 ET | [8-K](/filings/0001628280-25-017612.md) | 5.02 Departure or appointment of officers or directors | 0001628280-25-017612 |
| 2025-02-27 | 12:15 ET | [10-K](/filings/0001628280-25-008433.md) | Annual report, period 2024-12-31 | 0001628280-25-008433 |
| 2025-02-27 | 12:07 ET | [8-K](/filings/0001628280-25-008429.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-25-008429 |
| 2025-01-14 | 12:09 ET | [8-K](/filings/0001628280-25-001433.md) | 2.02 Results of operations; 7.01 Regulation FD disclosure | 0001628280-25-001433 |
| 2024-12-09 | 14:49 ET | [8-K](/filings/0001628280-24-050349.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-24-050349 |
| 2024-11-20 | 12:11 ET | [8-K](/filings/0001628280-24-048593.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-24-048593 |
| 2024-10-31 | 11:12 ET | [10-Q](/filings/0001628280-24-044411.md) | Quarterly report, period 2024-09-30 | 0001628280-24-044411 |
| 2024-10-31 | 11:07 ET | [8-K](/filings/0001628280-24-044409.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-24-044409 |
| 2024-10-16 | 21:53 ET | [8-K/A](/filings/0001628280-24-042879.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-24-042879 |
| 2024-10-15 | 20:11 ET | [8-K](/filings/0001628280-24-042833.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-24-042833 |
| 2024-10-11 | 20:10 ET | [8-K](/filings/0001628280-24-042728.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001628280-24-042728 |
| 2024-09-03 | 11:06 ET | [8-K](/filings/0001628280-24-039023.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-24-039023 |
| 2024-08-01 | 11:27 ET | [10-Q](/filings/0001628280-24-033882.md) | Quarterly report, period 2024-06-30 | 0001628280-24-033882 |
| 2024-08-01 | 11:11 ET | [8-K](/filings/0001628280-24-033874.md) | 2.02 Results of operations | 0001628280-24-033874 |
| 2024-06-21 | 20:06 ET | [8-K](/filings/0001628280-24-029301.md) | 5.07 Shareholder vote results | 0001628280-24-029301 |
| 2024-06-10 | 11:41 ET | [8-K](/filings/0001628280-24-027399.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-24-027399 |
| 2024-05-08 | 11:10 ET | [10-Q](/filings/0001628280-24-021368.md) | Quarterly report, period 2024-03-31 | 0001628280-24-021368 |
| 2024-05-08 | 11:07 ET | [8-K](/filings/0001628280-24-021367.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-24-021367 |
| 2024-04-29 | 12:03 ET | [DEF 14A](/filings/0001628280-24-018785.md) | Proxy statement, period 2024-04-29 | 0001628280-24-018785 |
| 2024-03-08 | 21:10 ET | [8-K](/filings/0001628280-24-009967.md) | 5.02 Departure or appointment of officers or directors | 0001628280-24-009967 |
| 2024-03-04 | 12:05 ET | [8-K](/filings/0001628280-24-008339.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-24-008339 |
| 2024-02-22 | 12:20 ET | [10-K](/filings/0001628280-24-006144.md) | Annual report, period 2023-12-31 | 0001628280-24-006144 |
| 2024-02-22 | 12:15 ET | [8-K](/filings/0001628280-24-006142.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-24-006142 |
| 2024-01-11 | 12:05 ET | [8-K](/filings/0001628280-24-001085.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001628280-24-001085 |

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Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:15 ET. No prices; not investment advice.