Summary
Updated Aug 30, 2026
William Tu is SVP, Corporate Controller of Glass House Brands Inc. (GLASF). 3 SEC Form 4 filings on record, most recently on 5 June 2026. Most recent open-market trade: sold $57K of GLASF on 26 May 2026. Lifetime open-market sales: $163K.
Recent Transactions
6Every recent SEC Form 4 transaction William Tu has reported, most recent first.
Most Active Insiders Right Now
William Tu has no co-filers on record, so these are insiders with the largest open-market activity across the market in the last 90 days.
- Silver Lake Partners V DE (AIV), L.P. - $165.05M of DELL open-market activity in the last 90 days
- GIC Private Ltd - $158.25M of MDLN open-market activity in the last 90 days
- Sean Lie - $157.48M of CBRS open-market activity in the last 90 days
- John B. Hess - $157.37M of CVX open-market activity in the last 90 days
- Mark Barrocas - $156.00M of SN open-market activity in the last 90 days
- Jack Jiajia Huang - $155.38M of COE open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is William Tu?
William Tu is a corporate insider, tracked as SVP, Corporate Controller of Glass House Brands Inc. (GLASF). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has William Tu submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has William Tu been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($163K) across all tracked filings.
Where can I see all of William Tu's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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