Shares outstanding · 2018–2025
Castle Biosciences shares outstanding
29.7M+4.2% · FY2025
Castle Biosciences (CSTL) reported 29.7M in shares outstanding for fiscal 2025, +4.2% year on year.
| Fiscal year | Shares outstanding | Change | Filing |
|---|---|---|---|
| FY20252025-12-31 | 29.7M | +4.2% | Open → |
| FY20242024-12-31 | 28.5M | +3.9% | Open → |
| FY20232023-12-31 | 27.4M | +3.2% | Open → |
| FY20222022-12-31 | 26.6M | +4.6% | Open → |
| FY20212021-12-31 | 25.4M | +2.3% | Open → |
| FY20202020-12-31 | 24.8M | +44.8% | Open → |
| FY20192019-12-31 | 17.1M | +794.0% | Open → |
| FY20182018-12-31 | 1.9M | — | Open → |
Shares outstanding — Shares outstanding is the number of shares in issue at the reporting date. A falling count usually means the company is buying back stock; a rising one means it is issuing.
Every row links to its own SEC filing · Fiscal year 2025 · Data as of September 25, 2026 · 2018–2025 compound annual growth +47.9%
Shares outstanding at companies of similar size
Cite this page
Ready-made references for the figures on this page, as published on September 25, 2026.
Wikipedia
{{cite web |title=Castle Biosciences shares outstanding |url=https://companiesranked.com/en/company/castle-biosciences/shares-outstanding |website=CompaniesRanked |date=2026-09-25 |language=en}}APA 7
CompaniesRanked. (September 25, 2026). Castle Biosciences shares outstanding. CompaniesRanked. https://companiesranked.com/en/company/castle-biosciences/shares-outstandingBibTeX
@misc{companiesranked-en-company-castle-biosciences-shares-outstanding-2026,
author = {{CompaniesRanked}},
title = {{Castle Biosciences shares outstanding}},
year = {2026},
howpublished = {\url{https://companiesranked.com/en/company/castle-biosciences/shares-outstanding}},
note = {Compiled from SEC EDGAR XBRL filings; data as of 2026-09-25},
urldate = {2026-09-25}
}The filing itself
The numbers above are read from this document: 10-Q · 0001628280-26-051052 · July 30, 2026
{{cite web |title=Castle Biosciences shares outstanding — 10-Q (0001628280-26-051052) |url=https://www.sec.gov/Archives/edgar/data/1447362/000162828026051052/cstl-20260630.htm |website=SEC EDGAR |publisher=U.S. Securities and Exchange Commission |date=2026-07-30}}The figures are rebuilt with every data refresh, so the reference carries the publication date. Add your own access date if your style requires one.