Insider Trading for CSTL
View recent insider trading activity including purchases, sales, and awards. Insider trading can provide insights into how executives view their company's prospects.
Insider Trading Summary
Shares Acquired
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Shares Disposed
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Net Position
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Recent Activity (30 Days)
Acquisitions: 6.8K shares
Dispositions: 27.7K shares
Net: -20.9K shares
Insiders have been net sellers recently, which could indicate concerns about current valuation or short-term outlook.
Quarterly Activity (3 Months)
Acquisitions: 203.3K shares
Dispositions: 166.1K shares
Net: 37.2K shares
Insiders have been net buyers over the quarter, suggesting potential confidence in medium-term business fundamentals.
Key Insider Activity: Mar 5, 2026 to Jul 14, 2026
MAETZOLD DEREK J
ExecutiveCorporate Officer
-137.1K shares
70 transactions
Juvenal Tobin W
ExecutiveCorporate Officer
-20.9K shares
3 transactions
Oelschlager Kristen M
ExecutiveCorporate Officer
-17.2K shares
3 transactions
Stokes Frank
ExecutiveCorporate Officer
-6.0K shares
1 transactions
Olson Tiffany
DirectorDirector
+11.8K shares
3 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Jul 14, 2026 | MAETZOLD DEREK J | ECorporate Officer | Exercise | 550 | $2.39 | $1,314.50 | 85.1K | View |
| Jul 14, 2026 | MAETZOLD DEREK J | ECorporate Officer | Sale | 1.4K | $22.92 | $31,102.44 | 39.4K | View |
| Jul 14, 2026 | MAETZOLD DEREK J | ECorporate Officer | Sale | 1.2K | $22.92 | $26,426.76 | 33.4K | View |
Jul 14, 2026 | Locked | — | — | — | — | — | — | — |
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Jun 16, 2026 | Locked | — | — | — | — | — | — | — |
Jun 15, 2026 | Locked | — | — | — | — | — | — | — |
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Apr 6, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 11, 2026 | Locked | — | — | — | — | — | — | — |
Mar 5, 2026 | Locked | — | — | — | — | — | — | — |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net sellers of CSTL stock, though this may be part of planned diversification.