CytomX Therapeutics, Inc. SEC filings CTMX
CytomX Therapeutics, Inc. has 800 filings in SEC EDGAR's recent list, going back to Sep 28, 2010. Its latest annual report, Form 10-K, was filed on Mar 16, 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 |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 28, 2026 | — |
| 4/A | Form 4/a | Oct 16, 2026 | Nov 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 7, 2026 | — |
| S-8 | Employee stock plan registration | Aug 6, 2026 | — |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Aug 5, 2026 | Aug 3, 2026 |
| 3 | Initial insider ownership | Aug 5, 2026 | Aug 3, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 3, 2026 | — |
| 4 | Insider transaction | Jul 30, 2026 | Jul 24, 2026 |
| 3 | Initial insider ownership | Jul 30, 2026 | Jul 24, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 27, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Jul 27, 2026 | Jul 24, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 8-K |
Current report
Material agreement
|
Jun 3, 2026 | May 29, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| DEFA14A | Additional proxy material | Apr 30, 2026 | — |
| DEF 14A | Proxy statement | Apr 30, 2026 | Jun 17, 2026 |
| PRE 14A | Preliminary proxy statement | Apr 20, 2026 | Jun 17, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 16, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 17, 2026 |
| 8-K |
Current report
Other events
|
Mar 19, 2026 | Mar 17, 2026 |
| 424B5 | Prospectus supplement | Mar 18, 2026 | — |
| 424B5 | Prospectus supplement | Mar 16, 2026 | — |
| S-3ASR | Automatic shelf registration | Mar 16, 2026 | — |
| 8-K |
Current report
Results of operations
|
Mar 16, 2026 | Mar 16, 2026 |
| 10-K | Annual report | Mar 16, 2026 | Dec 31, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 4, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2026 | — |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 7, 2025 | — |
| 144 | Notice of proposed sale | Nov 6, 2025 | — |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2025 | — |
| 4 | Insider transaction | Oct 29, 2025 | Oct 20, 2025 |
| 3 | Initial insider ownership | Oct 29, 2025 | Oct 20, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 21, 2025 | — |
| EFFECT | Filing | Aug 18, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| CORRESP | Letter to the SEC | Aug 14, 2025 | — |
| UPLOAD | Letter from the SEC | Aug 13, 2025 | — |
| 8-K |
Current report
Other events
|
Aug 13, 2025 | Aug 13, 2025 |
| S-8 | Employee stock plan registration | Aug 7, 2025 | — |
| S-3 | Shelf registration | Aug 7, 2025 | — |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 6, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 29, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 9, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 9, 2025 | — |
| 4 | Insider transaction | Jun 17, 2025 | Jun 13, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 13, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 13, 2025 |
| 4 | Insider transaction | Jun 13, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 13, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 13, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 13, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 13, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 13, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 13, 2025 | Jun 11, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 13, 2025 | Jun 11, 2025 |
| 8-K |
Current report
Other events
|
May 28, 2025 | May 27, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 20, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 20, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 20, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 14, 2025 | — |
| 8-K |
Current report
Other events
|
May 13, 2025 | May 12, 2025 |
| 424B5 | Prospectus supplement | May 12, 2025 | — |
| 8-K |
Current report
Results of operations, Other events
|
May 12, 2025 | May 12, 2025 |
| 10-Q | Quarterly report | May 12, 2025 | Mar 31, 2025 |
| DEFA14A | Additional proxy material | Apr 28, 2025 | — |
| DEF 14A | Proxy statement | Apr 28, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 18, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 18, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 18, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 18, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 18, 2025 |
| S-8 | Employee stock plan registration | Mar 6, 2025 | — |
| 8-K |
Current report
Results of operations
|
Mar 6, 2025 | Mar 6, 2025 |
| 10-K | Annual report | Mar 6, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Listing notice
|
Feb 26, 2025 | Feb 24, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 4/A | Filing | Feb 10, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 8-K |
Current report
Officer or director change
|
Feb 3, 2025 | Jan 30, 2025 |
| 8-K |
Current report
Exit or restructuring costs
|
Jan 6, 2025 | Jan 6, 2025 |
| 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 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 4 | Insider transaction | Aug 22, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Aug 22, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Aug 22, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Aug 22, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Aug 22, 2024 | Aug 20, 2024 |
| EFFECT | Filing | Aug 19, 2024 | — |
| CORRESP | Letter to the SEC | Aug 15, 2024 | — |
| UPLOAD | Letter from the SEC | Aug 15, 2024 | — |
| S-3 | Shelf registration | Aug 9, 2024 | — |
| 8-K |
Current report
Results of operations
|
Aug 8, 2024 | Aug 8, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 17, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| SC 13G | Ownership over 5% (passive) | May 22, 2024 | — |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
May 17, 2024 | May 15, 2024 |
| SC 13G | Ownership over 5% (passive) | May 13, 2024 | — |
| 8-K |
Current report
Other events
|
May 8, 2024 | May 8, 2024 |
| 8-K |
Current report
Results of operations
|
May 8, 2024 | May 8, 2024 |
| 10-Q | Quarterly report | May 8, 2024 | Mar 31, 2024 |
| DEFA14A | Additional proxy material | May 1, 2024 | — |
| DEFA14A | Additional proxy material | Apr 4, 2024 | — |
| DEF 14A | Proxy statement | Apr 4, 2024 | May 15, 2024 |
| 4 | Insider transaction | Mar 28, 2024 | Mar 26, 2024 |
| PRE 14A | Preliminary proxy statement | Mar 25, 2024 | May 15, 2024 |
| 4 | Insider transaction | Mar 22, 2024 | Mar 20, 2024 |
| 3 | Initial insider ownership | Mar 22, 2024 | Mar 20, 2024 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change
|
Mar 22, 2024 | Mar 20, 2024 |
| 4 | Insider transaction | Mar 21, 2024 | Mar 19, 2024 |
| 4 | Insider transaction | Mar 21, 2024 | Mar 19, 2024 |
| 4 | Insider transaction | Mar 21, 2024 | Mar 19, 2024 |
| 4 | Insider transaction | Mar 21, 2024 | Mar 19, 2024 |
| 4 | Insider transaction | Mar 21, 2024 | Mar 19, 2024 |
| S-8 | Employee stock plan registration | Mar 11, 2024 | — |
| 8-K |
Current report
Results of operations
|
Mar 11, 2024 | Mar 11, 2024 |
| 10-K | Annual report | Mar 11, 2024 | Dec 31, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Dec 22, 2023 | Dec 20, 2023 |
| 4 | Insider transaction | Dec 22, 2023 | Dec 20, 2023 |
| 4 | Insider transaction | Dec 22, 2023 | Dec 20, 2023 |
| 4 | Insider transaction | Dec 22, 2023 | Dec 20, 2023 |
| 4 | Insider transaction | Dec 22, 2023 | Dec 20, 2023 |
| 4 | Insider transaction | Dec 19, 2023 | Dec 17, 2023 |
| 4 | Insider transaction | Dec 19, 2023 | Dec 17, 2023 |
| 4 | Insider transaction | Dec 19, 2023 | Dec 17, 2023 |
| 4 | Insider transaction | Dec 19, 2023 | Dec 17, 2023 |
| 4 | Insider transaction | Dec 19, 2023 | Dec 17, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2023 | Nov 7, 2023 |
| 10-Q | Quarterly report | Nov 7, 2023 | Sep 30, 2023 |
| 4 | Insider transaction | Sep 22, 2023 | Sep 20, 2023 |
| 4 | Insider transaction | Sep 22, 2023 | Sep 20, 2023 |
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- CTMX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- South San Francisco, CA
- SEC filer status
- Accelerated filer
- SEC CIK
- 1501989
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.