$40,000 of CASTLE BIOSCIENCES INC. lobbying was just disclosed, from Q3 of 2025, in a new Lobbying Disclosure Act filing.
This included lobbying on issues like:
"Issues relating to Medicare coverage for laboratory diagnostic services."
You can find more data on corporate lobbying on Quiver Quantitative.
CSTL Insider Trading Activity
CSTL insiders have traded $CSTL stock on the open market 34 times in the past 6 months. Of those trades, 0 have been purchases and 34 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 32 sales selling 80,900 shares for an estimated $1,621,009.
- KRISTEN M OELSCHLAGER (Chief Operating Officer) has made 0 purchases and 2 sales selling 30,684 shares for an estimated $669,706.
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 88 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- 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
- PRINCIPAL FINANCIAL GROUP INC added 331,101 shares (+22.6%) to their portfolio in Q2 2025, for an estimated $6,761,082
- 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:
- Canaccord Genuity issued a "Buy" rating on 09/09/2025
- Scotiabank issued a "Sector Outperform" rating on 05/21/2025
- Lake Street issued a "Buy" rating on 05/06/2025
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 $37.0.
Here are some recent targets:
- 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
- Thomas Flaten from Lake Street set a target price of $35.0 on 05/06/2025
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
