CASTELLE \CA\
CASTELLE \CA\ (CSTL) is a publicly traded company in the Unknown sector. Across all available filings, 11 corporate insiders have executed 1078 transactions totaling $35.1M, demonstrating a bearish sentiment with -$34.9M in net insider flow. The most recent transaction on Jan 20, 2026 involved a sale of 4,017 shares valued at $160.7K.
CSTL Insider Activity Summary
Who Is Buying CSTL Stock?
No significant insider buying has been recorded for CSTL in the recent period.
Who Is Selling CSTL Stock?
No significant insider selling has been recorded for CSTL in the recent period.
Is CASTELLE \CA\ Insider Trading Bullish or Bearish?
Based on recent SEC filings, insider sentiment for CSTL is bearish with an Insider Alignment Score of 0/100 and a net flow of -$34.9M. Insiders are reducing their positions, though this can be driven by factors unrelated to company outlook.
CSTL Frequently Asked Questions
Understanding CSTL Insider Activity
Insider trading at CASTELLE \CA\ (CSTL) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 11 insiders are actively trading CSTL stock, having executed 1078 transactions in the past 90 days. The most active insider is Derek J. Maetzold (Executive), who has made 750 transactions totaling $17.7M.
Related Tools
Track CASTELLE \CA\ Insider Activity
Get notified when executives and directors at CSTL file new Form 4 transactions