CSTL

Castle Biosciences Inc

Company with tickers: CSTL

CIK

1447362

CUSIP

14843C105

Shares Outstanding

30,329,952

13F Activity (30d)

108 filings 104 filers

Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.

1M 3M 6M 1Y 5Y All

Off-Exchange Volume History

Week Start	ATS Volume	Non-ATS OTC Volume	Total Off-Exchange	% of FINRA Weekly Volume
2026-05-04	970,845	625,748	1,596,593	43.0%
2026-04-27	315,157	147,729	462,886	39.8%
2026-04-20	332,864	219,566	552,430	36.8%
2026-04-13	240,223	119,040	359,263	36.6%
2026-04-06	303,466	160,466	463,932	29.9%
2026-03-30	345,424	230,597	576,021	56.3%
2026-03-23	379,449	184,102	563,551	37.1%
2026-03-16	364,577	274,820	639,397	40.7%
2026-03-09	420,302	122,556	542,858	37.7%
2026-03-02	752,498	248,574	1,001,072	37.3%
2026-02-23	708,107	386,101	1,094,208	36.2%
2026-02-16	413,029	225,569	638,598	38.5%
2026-02-09	409,836	310,559	720,395	40.3%
2026-02-02	600,108	313,084	913,192	34.3%
2026-01-26	661,662	323,216	984,878	43.1%
2026-01-19	391,477	138,487	529,964	44.1%
2026-01-12	603,832	119,457	723,289	37.6%
2026-01-05	562,807	173,596	736,403	40.3%
2025-12-29	286,319	181,878	468,197	37.5%
2025-12-22	270,282	118,619	388,901	36.9%
2025-12-15	353,699	326,264	679,963	40.7%

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