William Tu insider trades: Glass House Brands (GLAS) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where William reports to the SEC
Open-market buys and sales
2 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | GLAS | ↓ Sell | 3,818 | $8.03 | $31K | Direct | Sep 11, 2026 (0d) |
| May 19, 2026 | GLASF | ↓ Sell | 15,888 | $10.08 | $160K | Direct | May 20, 2026 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About William Tu's insider trades
William Tu is SVP, Corporate Controller at Glass House Brands (GLAS). Since May 19, 2026, William has reported no open-market purchases and 2 sales worth $191K on SEC Form 4. In the last 12 months: 2 sales ($191K).
Their filings also include option exercises (4 filings), shares withheld for taxes (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every GLAS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.