CSTL has an insider buy conviction of 50%, compared to the Unknown sector buy average of 50%. CSTL ranks #105 in insider activity out of 323 tracked companies in its industry.
Top Insiders
Most active traders
M
1
Multiple Insiders
S - Sale+OE Insiders
0 buys77 sells
$0 total
Insider Trading Summary
Automated trend commentary
Over the last 90 days, corporate insiders at CSTL (CSTL) engaged in a total of 77 transactions reported via SEC Form 4 filings. Among these, 0 were open-market purchases and 0 were sales. The total volume of insider trading reached $0.
The net insider activity for CSTL shows a net buying bias of $0. This activity represents a 50% buy ratio, suggesting that insiders are currently neutral on the company's near-term outlook relative to recent history.
The most notable individual transaction was a Sale by Multiple Insiders (S - Sale+OE Insiders), who traded 191.3K shares valued at $0 on Sep 21, 2026.
Answers to common questions regarding corporate filings and executive sentiment for CSTL.
Based on SEC Form 4 disclosures, the Insider Confidence Score for CSTL is currently 50/100, which reflects a neutral / balanced bias. This calculation accounts for a total of 0 purchases and 0 sales by company executives over the last 90 days.
The CEO Conviction Index for CSTL is rated as "No Recent Signal". Executive buying is typically a strong vote of confidence as C-level leaders have the most intimate knowledge of their firm's prospects. Officer selling, on the other hand, is often routine and does not automatically signal operational weakness.
No. Insider tracking is a highly informative technical signal that indicates executive sentiment, but it should not be the sole basis for a transaction. Investors should combine this filing analysis with company financials, sector trends, and risk management criteria.