| CSTL Shares Outstanding History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the CSTL shares outstanding history going back to 7/24/2019:
Also see: CSTL Market Cap History CSTL YTD Return |
CSTL Shares Outstanding History — Castle Biosciences Share Count Over Time
As of 7/23/2026 Castle Biosciences has 30.55 million CSTL shares outstanding. Investors often track the CSTL shares outstanding history to compare shareholder return trends against the change in share count over time.
This page shows CSTL share count trends over time, with 29 historical shares outstanding datapoints presented, dating back to 7/24/2019.
| CSTL Shares Outstanding History Chart | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CSTL Historical Shares Outstanding: +10.22% CAGR 
Mouse over chart for data details
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| CSTL Stock Price Chart |
| About Castle Biosciences Inc |
| Castle Biosciences, Inc. is a commercial-stage diagnostics company. Co. is focused on providing physicians and their patients with personalized, clinically actionable information to clinicians and their patients to inform treatment decisions and improve health outcomes. Its portfolio consists of tests for skin cancers, uveal melanoma, Barretts esophagus and mental health conditions. Its products include DecisionDx-Melanoma, DecisionDx-SCC, MyPath Melanoma, TissueCypher, and DecisionDx-UM, IDgenetix. We show 29 historical shares outstanding datapoints in our coverage of CSTL's shares outstanding history. Understanding the changing numbers of CSTL shares outstanding — and comprehending the concept of differing number of shares outstanding in general comparing companies like CSTL versus peers — is critical for investors. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies. Furthermore, via issuance of new shares over time, or the repurchase of existing shares, the number of shares outstanding can fluctuate over the course of history. With this page we aim to empower investors researching CSTL by allowing them to research CSTL shares outstanding history as well as any other stock in our coverage universe. |
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| Castle Biosciences (CSTL) is categorized under the Healthcare sector; to help you further research historical shares outstanding numbers, below are some other companies in the same sector:
CSU Shares Outstanding History CTIC Shares Outstanding History CTKB Shares Outstanding History CTLT Shares Outstanding History CTMX Shares Outstanding History CTNM Shares Outstanding History CTRV Shares Outstanding History CTSO Shares Outstanding History CTXR Shares Outstanding History CUE Shares Outstanding History More Healthcare companies » |
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