DEREK J MAETZOLD, the Pres. & Chief Exec. Officer of $CSTL, sold 21 shares of the company on 08-28-2026 for an estimated $711. We received data on the trade from a recent SEC filing. This was a sale of approximately 0.2% of their shares of this class of stock. Following this trade, they now own 11,256 shares of this class of $CSTL stock.
$CSTL Insider Trading Activity
$CSTL insiders have traded $CSTL stock on the open market 141 times in the past 6 months. Of those trades, 0 have been purchases and 141 have been sales.
Here’s a breakdown of recent trading of $CSTL stock by insiders over the last 6 months:
- DEREK J MAETZOLD (Pres. & Chief Exec. Officer) has made 0 purchases and 119 sales selling 238,026 shares for an estimated $6,538,230.
- KRISTEN M OELSCHLAGER (Chief Operating Officer) has made 0 purchases and 9 sales selling 50,361 shares for an estimated $1,480,973.
- TOBIN W JUVENAL (Chief Commercial Officer) has made 0 purchases and 7 sales selling 50,683 shares for an estimated $1,451,059.
- FRANK STOKES (Chief Financial Officer) has made 0 purchases and 4 sales selling 37,909 shares for an estimated $1,101,492.
- G BRADLEY COLE has made 0 purchases and 2 sales selling 7,403 shares for an estimated $210,727.
To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.
$CSTL Hedge Fund Activity
We have seen 101 institutional investors add shares of $CSTL stock to their portfolio, and 113 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- PORTOLAN CAPITAL MANAGEMENT, LLC removed 1,021,465 shares (-75.6%) from their portfolio in Q2 2026, for an estimated $24,361,940
- MACKENZIE FINANCIAL CORP added 719,396 shares (+970.7%) to their portfolio in Q2 2026, for an estimated $17,157,594
- JEFFERIES FINANCIAL GROUP INC. added 647,391 shares (+inf%) to their portfolio in Q2 2026, for an estimated $15,440,275
- ACADIAN ASSET MANAGEMENT LLC added 434,227 shares (+89.6%) to their portfolio in Q2 2026, for an estimated $10,356,313
- EVENTIDE ASSET MANAGEMENT, LLC removed 386,425 shares (-100.0%) from their portfolio in Q2 2026, for an estimated $9,216,236
- POINT72 ASSET MANAGEMENT, L.P. added 357,317 shares (+inf%) to their portfolio in Q2 2026, for an estimated $8,522,010
- KENNEDY CAPITAL MANAGEMENT LLC added 348,371 shares (+inf%) to their portfolio in Q2 2026, for an estimated $8,308,648
To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.
$CSTL Revenue
$CSTL had revenues of $103.5M in Q2 2026. This is an increase of 20.14% from the same period in the prior year.
You can track CSTL financials on Quiver Quantitative's CSTL stock page.
You can access data on CSTL stock through the Quiver Quantitative API.
$CSTL Analyst Ratings
Wall Street analysts have issued reports on $CSTL in the last several months. We have seen 1 firms issue buy ratings on the stock, and 0 firms issue sell ratings.
Here are some recent analyst ratings:
- BTIG issued a "Buy" rating on 05/13/2026
To track analyst ratings and price targets for $CSTL, check out Quiver Quantitative's $CSTL forecast page.
$CSTL Price Targets
Multiple analysts have issued price targets for $CSTL recently. We have seen 4 analysts offer price targets for $CSTL in the last 6 months, with a median target of $40.0.
Here are some recent targets:
- Max Masucci from Roth Capital set a target price of $40.0 on 06/25/2026
- Mark Massaro from BTIG set a target price of $40.0 on 05/13/2026
- Catherine Ramsey from Baird set a target price of $43.0 on 05/07/2026
- Kyle Mikson from Canaccord Genuity set a target price of $40.0 on 04/20/2026
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
