Kristen M Oelschlager, the Chief Operating Officer of $CSTL, sold 12,678 shares of the company on 10-31-2025 for an estimated $317,457. We received data on the trade from a recent SEC filing. This was a sale of approximately 31.5% of their shares of this class of stock. Following this trade, they now own 27,569 shares of this class of $CSTL stock.
$CSTL Insider Trading Activity
$CSTL insiders have traded $CSTL stock on the open market 16 times in the past 6 months. Of those trades, 0 have been purchases and 16 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 13 sales selling 72,290 shares for an estimated $1,445,912.
- KRISTEN M OELSCHLAGER (Chief Operating Officer) has made 0 purchases and 3 sales selling 43,362 shares for an estimated $987,163.
To track insider transactions, check out Quiver Quantitative's insider trading dashboard.
$CSTL Hedge Fund Activity
We have seen 85 institutional investors add shares of $CSTL stock to their portfolio, and 92 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- AIGH CAPITAL MANAGEMENT LLC added 707,287 shares (+inf%) to their portfolio in Q3 2025, for an estimated $16,104,924
- CITADEL ADVISORS LLC added 630,133 shares (+243.9%) to their portfolio in Q2 2025, for an estimated $12,867,315
- PARK WEST ASSET MANAGEMENT LLC removed 556,485 shares (-100.0%) from their portfolio in Q2 2025, for an estimated $11,363,423
- BRAIDWELL LP added 457,488 shares (+125.3%) to their portfolio in Q2 2025, for an estimated $9,341,904
- WELLINGTON MANAGEMENT GROUP LLP removed 421,317 shares (-50.9%) from their portfolio in Q2 2025, for an estimated $8,603,293
- NUVEEN, LLC added 401,296 shares (+59.7%) to their portfolio in Q2 2025, for an estimated $8,194,464
- UBS GROUP AG added 315,089 shares (+646.2%) to their portfolio in Q2 2025, for an estimated $6,434,117
To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard.
$CSTL Analyst Ratings
Wall Street analysts have issued reports on $CSTL in the last several months. We have seen 3 firms issue buy ratings on the stock, and 0 firms issue sell ratings.
Here are some recent analyst ratings:
- Baird issued a "Outperform" rating on 11/04/2025
- Canaccord Genuity issued a "Buy" rating on 09/09/2025
- Scotiabank issued a "Sector Outperform" rating on 05/21/2025
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 3 analysts offer price targets for $CSTL in the last 6 months, with a median target of $40.0.
Here are some recent targets:
- Catherine Ramsey from Baird set a target price of $41.0 on 11/04/2025
- Kyle Mikson from Canaccord Genuity set a target price of $37.0 on 09/09/2025
- Sung Ji Nam from Scotiabank set a target price of $40.0 on 05/21/2025
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
