Insider · CIK 0002120766
William Tu
Files at GLAS (Glass House Brands Inc.). First filing May 20, 2026, latest Sep 11, 2026.
William Tu files SEC Form 4 as officer at GLAS (Glass House Brands Inc.). Since May 20, 2026, William Tu has reported 0 open-market buys worth $0 and 3 open-market sells worth $354k, the latest filed on Sep 11, 2026.
A track record needs three past buys with six months of prices behind them; William Tu has 0, so none is measured yet.
The newest scored trade: sold $31k of GLAS on Sep 11, 2026, filed Sep 11, 2026, scored 25 (weak). In the last 12 months: 0 buys worth $0 and 3 sells worth $354k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
GLAS: Glass House Brands Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 25Weak | GLASsell Glass House Brands Inc. | $31k 3,818 shares | -50% | - | |
| 46Moderate | GLASsell Glass House Brands Inc. | $163k 15,837 shares | -100% | +111% from low-4% from high | |
| 36Weak | GLASsell Glass House Brands Inc. | $160k 15,888 shares | -46% | +113% from low-3% from high |
Transactions
Every row this insider has filed, 16 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 16, 2026 | GLAS Glass House Brands Inc. | MOption exercise Equity Shares | +38,691 | - | - | 42,474 | 25 d ago |
| Sep 16, 2026 | GLAS Glass House Brands Inc. | FTax withholding Equity Shares | -13,523 | $8.08 | $109k | 28,951 | 25 d ago |
| Sep 16, 2026 | GLAS Glass House Brands Inc. | MOption exercise Restricted Stock Unitderivative | -38,691 | $0.00 | $0 | 100,580 | 25 d ago |
| Sep 1, 2026 | GLAS Glass House Brands Inc. | MOption exercise Equity Shares | +5,800 | - | - | 9,618 | 32 d ago |
| Sep 4, 2026 | GLAS Glass House Brands Inc. | FTax withholding Equity Shares | -2,017 | $9.00 | $18k | 7,601 | 32 d ago |
| Sep 11, 2026 | GLAS Glass House Brands Inc. | SOpen-market sale Equity Shares | -3,818 | $8.03 | $31k | 3,783 | 32 d ago |
| Sep 1, 2026 | GLAS Glass House Brands Inc. | MOption exercise Restricted Stock Unitderivative | -5,800 | $0.00 | $0 | 139,271 | 32 d ago |
| Jun 1, 2026 | GLAS Glass House Brands Inc. | MOption exercise Equity Shares | +5,800 | - | - | 5,800 | Jun 4, 2026 |
| Jun 3, 2026 | GLAS Glass House Brands Inc. | FTax withholding Equity Shares | -1,982 | $11.37 | $23k | 3,818 | Jun 4, 2026 |
| Jun 1, 2026 | GLAS Glass House Brands Inc. | MOption exercise Restricted Stock Unitderivative | -5,800 | $0.00 | $0 | 145,071 | Jun 4, 2026 |
| May 22, 2026 | GLAS Glass House Brands Inc. | FTax withholding Equity Shares | -2,910 | $10.29 | $30k | 15,837 | May 26, 2026 |
| May 22, 2026 | GLAS Glass House Brands Inc. | SOpen-market sale Equity Shares | -10,414 | $10.19 | $106k | 5,423 | May 26, 2026 |
| May 26, 2026 | GLAS Glass House Brands Inc. | SOpen-market sale Equity Shares | -5,423 | $10.48 | $57k | 0 | May 26, 2026 |
| May 19, 2026 | GLAS Glass House Brands Inc. | SOpen-market sale Equity Shares | -15,888 | $10.08 | $160k | 18,747 | May 20, 2026 |
| May 18, 2026 | GLAS Glass House Brands Inc. | MOption exercise Equity Shares | +8,333 | - | - | 34,635 | May 19, 2026 |
| May 18, 2026 | GLAS Glass House Brands Inc. | MOption exercise Restricted Stock Unitderivative | -8,333 | $0.00 | $0 | 150,871 | May 19, 2026 |
Questions about William Tu
Answered from the filings on this page, as of the latest one.
Is William Tu buying or selling?
In the last 12 months William Tu reported 0 open-market buys worth $0 and 3 open-market sells worth $354k on SEC Form 4; the latest was sold $31k of GLAS on Sep 11, 2026. Grants, option exercises and tax withholding are not counted.
How did William Tu's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and William Tu has 0.
Where does William Tu file Form 4?
William Tu has filed Form 4 at GLAS (Glass House Brands Inc.) as SVP, Corporate Controller. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.