DIAN C TAYLOR, a director at $ARTNA, sold 2,000 shares of the company on 08-17-2026 for an estimated $70,014. We received data on the trade from a recent SEC filing. This was a sale of approximately 5.0% of their shares of this class of stock. Following this trade, they now own 38,073 shares of this class of $ARTNA stock.
$ARTNA Insider Trading Activity
$ARTNA insiders have traded $ARTNA stock on the open market 5 times in the past 6 months. Of those trades, 0 have been purchases and 5 have been sales.
Here’s a breakdown of recent trading of $ARTNA stock by insiders over the last 6 months:
- DIAN C TAYLOR has made 0 purchases and 5 sales selling 9,000 shares for an estimated $295,266.
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.
$ARTNA Hedge Fund Activity
We have seen 59 institutional investors add shares of $ARTNA stock to their portfolio, and 44 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- T. ROWE PRICE INVESTMENT MANAGEMENT, INC. added 595,751 shares (+188.3%) to their portfolio in Q2 2026, for an estimated $20,249,576
- NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO removed 326,997 shares (-100.0%) from their portfolio in Q1 2026, for an estimated $10,414,854
- UBS GROUP AG removed 137,839 shares (-80.5%) from their portfolio in Q2 2026, for an estimated $4,685,147
- MARSHALL WACE, LLP removed 48,518 shares (-48.2%) from their portfolio in Q2 2026, for an estimated $1,649,126
- MILLENNIUM MANAGEMENT LLC removed 42,829 shares (-51.1%) from their portfolio in Q2 2026, for an estimated $1,455,757
- JANE STREET GROUP, LLC removed 41,330 shares (-27.6%) from their portfolio in Q2 2026, for an estimated $1,404,806
- BLACKROCK, INC. added 38,635 shares (+22.6%) to their portfolio in Q2 2026, for an estimated $1,313,203
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.
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
