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 |
| CERT | Filing | Aug 17, 2026 | — |
| 8-A12B | Filing | Aug 14, 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 |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2026 | May 28, 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 |
| 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 |
| 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 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 13, 2026 | Jan 11, 2026 |
| 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 |
| 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 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Shareholder vote results
|
May 23, 2025 | May 22, 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 |
| 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 |
| PRE 14A | Preliminary proxy statement | Mar 28, 2025 | May 22, 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, Regulation FD disclosure
|
Feb 27, 2025 | Feb 27, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 13, 2025 | Jan 12, 2025 |
| 10-Q | Quarterly report | Nov 4, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 4, 2024 | Nov 4, 2024 |
| 10-Q | Quarterly report | Aug 5, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 5, 2024 | Aug 5, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 24, 2024 | May 23, 2024 |
| DEFA14A | Additional proxy material | May 10, 2024 | — |
| 10-Q | Quarterly report | May 2, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 2, 2024 | May 2, 2024 |
| EFFECT | Filing | Apr 16, 2024 | — |
| CORRESP | Letter to the SEC | Apr 12, 2024 | — |
| ARS | Annual report to shareholders | Apr 10, 2024 | Apr 10, 2024 |
| DEFA14A | Additional proxy material | Apr 10, 2024 | — |
| DEF 14A | Proxy statement | Apr 10, 2024 | Apr 10, 2024 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Mar 27, 2024 | Mar 26, 2024 |
| UPLOAD | Letter from the SEC | Mar 7, 2024 | — |
| S-8 | Employee stock plan registration | Feb 28, 2024 | — |
| S-3 | Shelf registration | Feb 28, 2024 | — |
| 10-K | Annual report | Feb 28, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 28, 2024 | Feb 28, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 8, 2024 | Jan 7, 2024 |
| S-8 | Employee stock plan registration | Dec 4, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Nov 9, 2023 | Nov 3, 2023 |
| 10-Q | Quarterly report | Nov 2, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 2, 2023 | Nov 2, 2023 |
| 10-Q | Quarterly report | Aug 2, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 2, 2023 | Aug 2, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 5, 2023 | Jun 5, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 1, 2023 | May 25, 2023 |
| DEFA14A | Additional proxy material | May 15, 2023 | — |
| 10-Q | Quarterly report | May 3, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 3, 2023 | May 3, 2023 |
| ARS | Annual report to shareholders | Apr 12, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 12, 2023 | — |
| DEF 14A | Proxy statement | Apr 12, 2023 | — |
| S-8 | Employee stock plan registration | Mar 1, 2023 | — |
| S-8 | Employee stock plan registration | Feb 28, 2023 | — |
| 10-K | Annual report | Feb 28, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 28, 2023 | Feb 28, 2023 |
| 8-K |
Current report
Officer or director change
|
Jan 20, 2023 | Jan 13, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 9, 2023 | Jan 8, 2023 |
| 8-K |
Current report
Officer or director change
|
Dec 28, 2022 | Dec 22, 2022 |
| 8-K |
Current report
Officer or director change
|
Dec 15, 2022 | Dec 9, 2022 |
| 10-Q | Quarterly report | Nov 2, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 2, 2022 | Nov 2, 2022 |
| 10-Q | Quarterly report | Aug 8, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 8, 2022 | Aug 8, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2022 | Jun 2, 2022 |
| S-3ASR | Automatic shelf registration | Jun 6, 2022 | — |
| 8-K |
Current report
Other events
|
Jun 3, 2022 | Jun 3, 2022 |
| 10-Q | Quarterly report | May 9, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 9, 2022 | May 9, 2022 |
| 8-K |
Current report
Unregistered share sale
|
May 2, 2022 | Apr 26, 2022 |
| DEFA14A | Additional proxy material | Apr 21, 2022 | — |
| DEF 14A | Proxy statement | Apr 21, 2022 | Jun 2, 2022 |
| 8-K |
Current report
Material agreement
|
Apr 7, 2022 | Apr 1, 2022 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Apr 4, 2022 | Apr 4, 2022 |
| 8-K |
Current report
Material agreement
|
Mar 17, 2022 | Mar 11, 2022 |
| S-8 | Employee stock plan registration | Feb 28, 2022 | — |
| 10-K | Annual report | Feb 28, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 28, 2022 | Feb 28, 2022 |
| S-3ASR | Automatic shelf registration | Jan 14, 2022 | — |
| 8-K/A | Amended current report | Jan 14, 2022 | Dec 2, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 10, 2022 | Jan 10, 2022 |
| 8-K |
Current report
Officer or director change
|
Jan 5, 2022 | Dec 29, 2021 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets
|
Dec 6, 2021 | Dec 2, 2021 |
| 8-K |
Current report
Material agreement
|
Dec 3, 2021 | Nov 29, 2021 |
| 10-Q | Quarterly report | Nov 8, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 8, 2021 | Nov 8, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure, Other events
|
Oct 19, 2021 | Oct 18, 2021 |
| 8-K |
Current report
Other events
|
Sep 9, 2021 | Sep 9, 2021 |
| 10-Q | Quarterly report | Aug 9, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 9, 2021 | Aug 9, 2021 |
| 8-K |
Current report
Officer or director change
|
Jul 16, 2021 | Jul 14, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 14, 2021 | Jun 10, 2021 |
| DEFA14A | Additional proxy material | May 13, 2021 | — |
| 10-Q | Quarterly report | May 10, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 10, 2021 | May 10, 2021 |
| DEFA14A | Additional proxy material | Apr 27, 2021 | — |
| DEF 14A | Proxy statement | Apr 27, 2021 | Jun 10, 2021 |
| 8-K |
Current report
Officer or director change
|
Apr 9, 2021 | Apr 6, 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, Regulation FD disclosure
|
Mar 8, 2021 | Mar 8, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 13, 2021 | Jan 13, 2021 |
| 8-K |
Current report
Agreement ended
|
Dec 22, 2020 | Dec 21, 2020 |
| 8-K |
Current report
Other events
|
Dec 16, 2020 | Dec 15, 2020 |
| 424B5 | Prospectus supplement | Dec 16, 2020 | — |
| 424B5 | Prospectus supplement | Dec 14, 2020 | — |
| S-3ASR | Automatic shelf registration | Dec 14, 2020 | — |
| 8-K |
Current report
Other events
|
Dec 14, 2020 | Dec 14, 2020 |
| 10-Q | Quarterly report | Nov 9, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2020 | Nov 9, 2020 |
| 8-K |
Current report
Officer or director change
|
Aug 20, 2020 | Aug 16, 2020 |
| 10-Q | Quarterly report | Aug 10, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2020 | Aug 10, 2020 |
| 8-K |
Current report
Other events
|
Jun 30, 2020 | Jun 24, 2020 |
| 424B4 | Prospectus | Jun 25, 2020 | — |
| POS EX | Filing | Jun 25, 2020 | — |
| EFFECT | Filing | Jun 24, 2020 | — |
| S-1MEF | Filing | Jun 24, 2020 | — |
| CORRESP | Letter to the SEC | Jun 22, 2020 | — |
| CORRESP | Letter to the SEC | Jun 22, 2020 | — |
| S-1 | Registration statement | Jun 22, 2020 | — |
| UPLOAD | Letter from the SEC | Jun 17, 2020 | — |
| DRS | Filing | Jun 12, 2020 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 9, 2020 | Jun 4, 2020 |
| 8-K |
Current report
Officer or director change
|
Jun 2, 2020 | May 29, 2020 |
| 8-K |
Current report
Officer or director change
|
May 28, 2020 | May 21, 2020 |
| DEFA14A | Additional proxy material | May 22, 2020 | — |
| 10-Q | Quarterly report | May 11, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 11, 2020 | May 11, 2020 |
| DEFA14A | Additional proxy material | Apr 23, 2020 | — |
| DEF 14A | Proxy statement | Apr 23, 2020 | Jun 4, 2020 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 15, 2020 | Apr 15, 2020 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure, Other events
|
Apr 1, 2020 | Apr 1, 2020 |
| S-8 | Employee stock plan registration | Mar 10, 2020 | — |
| 10-K | Annual report | Mar 10, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 10, 2020 | Mar 10, 2020 |
| 8-K |
Current report
Material agreement
|
Mar 5, 2020 | Feb 28, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 9, 2020 | Jan 9, 2020 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Dec 19, 2019 | Dec 13, 2019 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 14, 2019 | Nov 11, 2019 |
| 10-Q | Quarterly report | Nov 12, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2019 | Nov 11, 2019 |
| 10-Q | Quarterly report | Sep 3, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Sep 3, 2019 | Sep 3, 2019 |
| D | Filing | Jul 30, 2019 | — |
| S-8 | Employee stock plan registration | Jul 29, 2019 | — |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change, Other events
|
Jul 29, 2019 | Jul 29, 2019 |
| 424B4 | Prospectus | Jul 26, 2019 | — |
| EFFECT | Filing | Jul 24, 2019 | — |
| S-1MEF | Filing | Jul 24, 2019 | — |
| SEC STAFF LETTER | Filing | Jul 24, 2019 | — |
| CORRESP | Letter to the SEC | Jul 23, 2019 | — |
| CORRESP | Letter to the SEC | Jul 23, 2019 | — |
| CERT | 8a cert | Jul 23, 2019 | — |
| FWP | Free writing prospectus | Jul 19, 2019 | — |
| S-1/A | Amended registration statement | Jul 19, 2019 | — |
| 8-A12B | Filing | Jul 15, 2019 | — |
| CORRESP | Letter to the SEC | Jul 15, 2019 | — |
| CORRESP | Letter to the SEC | Jul 15, 2019 | — |
| S-1/A | Amended registration statement | Jul 15, 2019 | — |
| CORRESP | Letter to the SEC | Jul 9, 2019 | — |
| UPLOAD | Letter from the SEC | Jul 8, 2019 | — |
| CORRESP | Letter to the SEC | Jun 26, 2019 | — |
| S-1 | Registration statement | Jun 26, 2019 | — |
| UPLOAD | Letter from the SEC | Jun 10, 2019 | — |
| SEC STAFF LETTER | Filing | Jun 5, 2019 | — |
| DRS | Filing | May 14, 2019 | — |
| D/A | Filing | Mar 21, 2019 | — |
| D | Filing | Feb 14, 2019 | — |
| D | Filing | Jun 13, 2018 | — |
| D | Filing | Jan 19, 2018 | — |
| D | Filing | Jul 30, 2015 | — |
| D | Filing | Aug 18, 2014 | — |
| D | Filing | Aug 5, 2014 | — |
| D | Filing | May 5, 2014 | — |
| D | Filing | Nov 19, 2013 | — |
| D | Filing | May 16, 2013 | — |
| D | Filing | Oct 4, 2012 | — |
| D | Filing | Mar 12, 2010 | — |
| D/A | Filing | Mar 20, 2009 | — |
| D/A | Filing | Mar 20, 2009 | — |
| REGDEX | Auto-generated paper document | Oct 2, 2008 | — |
Showing 197 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
- 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.