William Tu, the SVP of $GLASF, sold 15,888 shares of the company on 05-19-2026 for an estimated $160,151. We received data on the trade from a recent SEC filing. This was a sale of approximately 45.9% of their shares of this class of stock. Following this trade, they now own 18,747 shares of this class of $GLASF stock.
$GLASF Insider Trading Activity
$GLASF insiders have traded $GLASF stock on the open market 1 times in the past 6 months. Of those trades, 0 have been purchases and 1 have been sales.
Here’s a breakdown of recent trading of $GLASF stock by insiders over the last 6 months:
- WILLIAM TU (SVP, Corporate Controller) sold 15,888 shares for an estimated $160,151
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.
$GLASF Hedge Fund Activity
We have seen 0 institutional investors add shares of $GLASF stock to their portfolio, and 0 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- FCA CORP /TX added 0 shares (+0.0%) to their portfolio in Q1 2026, for an estimated $0
- GAME PLAN FINANCIAL ADVISORS, LLC added 0 shares (+0.0%) to their portfolio in Q1 2026, for an estimated $0
- FNY INVESTMENT ADVISERS, LLC added 0 shares (+0.0%) to their portfolio in Q1 2026, for an estimated $0
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.
