Castle Biosciences Inc SEC filings CSTL
Castle Biosciences Inc has 890 filings in SEC EDGAR's recent list, going back to Oct 2, 2008. Its latest annual report, Form ARS, was filed on Apr 8, 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, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 5, 2026 | Nov 5, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 2, 2026 |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 4 | Insider transaction | Oct 30, 2026 | Oct 28, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 29, 2026 | — |
| 4 | Insider transaction | Oct 28, 2026 | Oct 26, 2026 |
| 4 | Insider transaction | Oct 21, 2026 | Oct 19, 2026 |
| 4 | Insider transaction | Oct 14, 2026 | Oct 12, 2026 |
| 144 | Notice of proposed sale | Oct 13, 2026 | — |
| 4 | Insider transaction | Oct 7, 2026 | Oct 5, 2026 |
| 144 | Notice of proposed sale | Oct 5, 2026 | — |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 144 | Notice of proposed sale | Oct 1, 2026 | — |
| 4 | Insider transaction | Oct 1, 2026 | Sep 29, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 21, 2026 |
| 4 | Insider transaction | Sep 16, 2026 | Sep 14, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 11, 2026 |
| 144 | Notice of proposed sale | Sep 14, 2026 | — |
| 144 | Notice of proposed sale | Sep 11, 2026 | — |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 2, 2026 | Aug 31, 2026 |
| 4 | Insider transaction | Sep 1, 2026 | Aug 28, 2026 |
| 4 | Insider transaction | Aug 27, 2026 | Aug 25, 2026 |
| 4 | Insider transaction | Aug 26, 2026 | Aug 24, 2026 |
| 144 | Notice of proposed sale | Aug 25, 2026 | — |
| 144 | Notice of proposed sale | Aug 24, 2026 | — |
| 4 | Insider transaction | Aug 19, 2026 | Aug 17, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| CERT | Filing | Aug 17, 2026 | — |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| 8-A12B | Filing | Aug 14, 2026 | — |
| 4 | Insider transaction | Aug 6, 2026 | Nov 24, 2025 |
| 4 | Insider transaction | Aug 6, 2026 | Aug 4, 2026 |
| 4 | Insider transaction | Aug 5, 2026 | Aug 3, 2026 |
| 4 | Insider transaction | Aug 4, 2026 | Jul 31, 2026 |
| 4 | Insider transaction | Aug 4, 2026 | Jul 31, 2026 |
| 144 | Notice of proposed sale | Jul 31, 2026 | — |
| 144 | Notice of proposed sale | Jul 31, 2026 | — |
| 10-Q | Quarterly report | Jul 30, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 30, 2026 | Jul 30, 2026 |
| 4 | Insider transaction | Jul 29, 2026 | Jul 27, 2026 |
| 4 | Insider transaction | Jul 16, 2026 | Jul 14, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 144 | Notice of proposed sale | Jul 1, 2026 | — |
| 4 | Insider transaction | Jun 18, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 144 | Notice of proposed sale | Jun 16, 2026 | — |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 144 | Notice of proposed sale | Jun 1, 2026 | — |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2026 | May 28, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 21, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 4 | Insider transaction | May 11, 2026 | May 7, 2026 |
| 144 | Notice of proposed sale | May 7, 2026 | — |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 6, 2026 | May 6, 2026 |
| 4 | Insider transaction | Apr 23, 2026 | Apr 21, 2026 |
| 4 | Insider transaction | Apr 8, 2026 | Apr 6, 2026 |
| ARS | Annual report to shareholders | Apr 8, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 8, 2026 | — |
| DEF 14A | Proxy statement | Apr 8, 2026 | May 28, 2026 |
| 4 | Insider transaction | Mar 30, 2026 | Mar 26, 2026 |
| 4 | Insider transaction | Mar 30, 2026 | Mar 26, 2026 |
| 144 | Notice of proposed sale | Mar 26, 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 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 16, 2026 | Mar 12, 2026 |
| 4 | Insider transaction | Mar 13, 2026 | Mar 11, 2026 |
| 144 | Notice of proposed sale | Mar 12, 2026 | — |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| 144 | Notice of proposed sale | Mar 3, 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, Regulation FD disclosure
|
Feb 26, 2026 | Feb 26, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 21, 2026 | — |
| 4 | Insider transaction | Jan 14, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Jan 14, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Jan 14, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Jan 14, 2026 | Jan 12, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 13, 2026 | Jan 11, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 144 | Notice of proposed sale | Jan 5, 2026 | — |
| 4 | Insider transaction | Dec 29, 2025 | Dec 22, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 144 | Notice of proposed sale | Dec 17, 2025 | — |
| 4 | Insider transaction | Dec 17, 2025 | Dec 15, 2025 |
| 144 | Notice of proposed sale | Dec 15, 2025 | — |
| 4 | Insider transaction | Dec 15, 2025 | Dec 11, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 11, 2025 |
| 4 | Insider transaction | Dec 11, 2025 | Dec 9, 2025 |
| 4 | Insider transaction | Dec 11, 2025 | Dec 9, 2025 |
| 4 | Insider transaction | Dec 11, 2025 | Dec 9, 2025 |
| 4 | Insider transaction | Dec 11, 2025 | Dec 9, 2025 |
| 144 | Notice of proposed sale | Dec 11, 2025 | — |
| 144 | Notice of proposed sale | Dec 11, 2025 | — |
| 4 | Insider transaction | Dec 8, 2025 | Dec 4, 2025 |
| 4 | Insider transaction | Dec 4, 2025 | Dec 2, 2025 |
| 4 | Insider transaction | Dec 1, 2025 | Nov 26, 2025 |
| 4 | Insider transaction | Nov 26, 2025 | Nov 25, 2025 |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 144 | Notice of proposed sale | Nov 24, 2025 | — |
| 4 | Insider transaction | Nov 24, 2025 | Nov 20, 2025 |
| 4 | Insider transaction | Nov 20, 2025 | Nov 18, 2025 |
| 4/A | Form 4/a | Nov 14, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 144 | Notice of proposed sale | Nov 12, 2025 | — |
| 144 | Notice of proposed sale | Nov 12, 2025 | — |
| 144 | Notice of proposed sale | Nov 12, 2025 | — |
| 4 | Insider transaction | Nov 6, 2025 | Nov 4, 2025 |
| 4 | Insider transaction | Nov 4, 2025 | Oct 31, 2025 |
| 4/A | Form 4/a | Nov 4, 2025 | Aug 27, 2025 |
| 144 | Notice of proposed sale | Nov 4, 2025 | — |
| S-8 | Employee stock plan registration | Nov 3, 2025 | — |
| 10-Q | Quarterly report | Nov 3, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 3, 2025 | Nov 3, 2025 |
| 4 | Insider transaction | Oct 23, 2025 | Oct 20, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 9, 2025 | — |
| 4 | Insider transaction | Oct 6, 2025 | Oct 2, 2025 |
| 144 | Notice of proposed sale | Oct 2, 2025 | — |
| 4 | Insider transaction | Sep 19, 2025 | Sep 17, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 4 | Insider transaction | Aug 29, 2025 | Aug 27, 2025 |
| 4 | Insider transaction | Aug 29, 2025 | Aug 27, 2025 |
| 144 | Notice of proposed sale | Aug 27, 2025 | — |
| 144 | Notice of proposed sale | Aug 27, 2025 | — |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| 4 | Insider transaction | Aug 15, 2025 | Aug 13, 2025 |
| 144 | Notice of proposed sale | Aug 13, 2025 | — |
| 4 | Insider transaction | Aug 12, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 12, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 12, 2025 | Aug 8, 2025 |
| 4 | Insider transaction | Aug 12, 2025 | Aug 8, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Aug 8, 2025 | Aug 5, 2025 |
| 10-Q | Quarterly report | Aug 4, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 4, 2025 | Aug 4, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 27, 2025 |
| 144 | Notice of proposed sale | Jun 27, 2025 | — |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Shareholder vote results
|
May 23, 2025 | May 22, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 12, 2025 | May 8, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 12, 2025 | — |
| 10-Q | Quarterly report | May 5, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 5, 2025 | May 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 23, 2025 | — |
| 4 | Insider transaction | Apr 23, 2025 | Apr 21, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 14, 2025 | — |
| 4 | Insider transaction | Apr 10, 2025 | Apr 8, 2025 |
| ARS | Annual report to shareholders | Apr 9, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 9, 2025 | — |
| DEF 14A | Proxy statement | Apr 9, 2025 | May 22, 2025 |
| 144 | Notice of proposed sale | Apr 8, 2025 | — |
| PRE 14A | Preliminary proxy statement | Mar 28, 2025 | May 22, 2025 |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| 4/A | Filing | Mar 25, 2025 | May 23, 2024 |
| 4/A | Filing | Mar 12, 2025 | May 23, 2024 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 144 | Notice of proposed sale | Mar 7, 2025 | — |
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
- Services-Medical Laboratories (SIC 8071)
- Listed as
- CSTL (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Friendswood, TX
- SEC filer status
- Accelerated filer
- SEC CIK
- 1447362
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.