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 |
|---|---|---|---|
| CERT | Filing | Aug 17, 2026 | — |
| 8-A12B | Filing | Aug 14, 2026 | — |
| EFFECT | Filing | Apr 16, 2024 | — |
| CORRESP | Letter to the SEC | Apr 12, 2024 | — |
| UPLOAD | Letter from the SEC | Mar 7, 2024 | — |
| POS EX | Filing | Jun 25, 2020 | — |
| EFFECT | Filing | Jun 24, 2020 | — |
| CORRESP | Letter to the SEC | Jun 22, 2020 | — |
| CORRESP | Letter to the SEC | Jun 22, 2020 | — |
| UPLOAD | Letter from the SEC | Jun 17, 2020 | — |
| DRS | Filing | Jun 12, 2020 | — |
| D | Filing | Jul 30, 2019 | — |
| EFFECT | 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 | — |
| 8-A12B | Filing | Jul 15, 2019 | — |
| CORRESP | Letter to the SEC | Jul 15, 2019 | — |
| CORRESP | Letter to the SEC | 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 | — |
| 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 41 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.