Glass House SVP sells 15,837 shares

Glass House Brands SVP and Corporate Controller William Tu reported multiple disposals of Equity Shares.

Rhea-AI Filing Summary

Glass House Brands SVP and Corporate Controller William Tu reported multiple disposals of Equity Shares. On May 22, he sold 10,414 Equity Shares in open-market trades at a weighted average price of $10.19 per share and had 2,910 shares withheld to cover tax liabilities at a weighted average price of $10.29. On May 26, he sold a further 5,423 Equity Shares at a weighted average price of $10.48 per share, leaving him with no directly held Equity Shares after these transactions.

Insider Trade Summary

Net Seller: 15,837 shares

Net Sell 3 txns

Insider Tu William

Role SVP, Corporate Controller

Sold 15,837 shs ($163K)

Type	Security	Shares	Price	Value
Sale	Equity Shares	5,423	$10.48	$57K
Exercise Price or Tax Liability	Equity Shares	2,910	$10.29	$30K
Sale	Equity Shares	10,414	$10.19	$106K

Holdings After Transaction: Equity Shares — 0 shares (Direct)

Footnotes (3)

1. F1. The Subordinate Voting Shares, Restricted Voting Shares, and/or Limited Voting Shares of Glass House Brands Inc. ("GHBI") (collectively, the "Equity Shares").
2. F2. The Equity Shares being withheld in order to pay tax liability. Represents the Equity Shares sold at a weighted average sale price of $10.29 per share. The Equity Shares were sold in multiple transactions at prices ranging from $10.25 to $10.33. The reporting person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of Equity Shares sold at each separate price.
3. F3. Represents the Equity Shares sold at a weighted average sale price of $10.19 per share. The Equity Shares were sold in multiple transactions at prices ranging from $10.14 to $10.22. The reporting person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of Equity Shares sold at each separate price.

Key Figures

Open-market sale (May 22): 10,414 shares at $10.19/share Open-market sale (May 26): 5,423 shares at $10.48/share Tax-withholding disposition: 2,910 shares at $10.29/share +2 more

5 metrics

Open-market sale (May 22) 10,414 shares at $10.19/share Equity Shares sold on May 22, 2026 (weighted average price)

Open-market sale (May 26) 5,423 shares at $10.48/share Equity Shares sold on May 26, 2026 (weighted average price)

Tax-withholding disposition 2,910 shares at $10.29/share Shares withheld to pay tax liability on May 22, 2026

Total open-market shares sold 15,837 shares Sum of May 22 and May 26 open-market sales

Direct holdings after transactions 0 shares Total shares following May 26, 2026 transaction

Key Terms

Equity Shares, open-market sale, tax-withholding disposition, weighted average sale price

4 terms

Equity Shares financial

"The Subordinate Voting Shares, Restricted Voting Shares, and/or Limited Voting Shares of Glass House Brands Inc. ("GHBI") (collectively, the "Equity Shares")."

Equity shares are units of ownership in a company that give the holder a claim on a portion of its assets and profits, like owning a slice of a business. They matter to investors because their value can rise or fall with the company’s performance and market sentiment, may provide periodic income through dividends, and often carry voting rights that influence how the business is run.

open-market sale financial

"transaction_action: "open-market sale" for the May 22 and May 26 transactions."

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

tax-withholding disposition financial

"transaction_action: "tax-withholding disposition" describing shares used to pay tax liability."

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

weighted average sale price financial

"Represents the Equity Shares sold at a weighted average sale price of $10.29 per share."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Glass House Brands (GHBWF) report for William Tu?

Glass House Brands SVP and Corporate Controller William Tu reported disposing of Equity Shares through open-market sales and tax withholding. Across May 22 and May 26 transactions, he sold 15,837 Equity Shares and had 2,910 additional shares withheld to satisfy tax liabilities.

How many Glass House Brands (GHBWF) shares did William Tu sell in the open market?

William Tu sold 15,837 Equity Shares in open-market transactions. He sold 10,414 shares on May 22 at a weighted average price of $10.19 and 5,423 shares on May 26 at a weighted average price of $10.48 per share.

What portion of William Tu’s Glass House Brands (GHBWF) shares were used for tax withholding?

A total of 2,910 Equity Shares were disposed of to cover tax liabilities. These shares were associated with a weighted average price of $10.29 per share and are classified as a tax-withholding disposition, not an open-market sale, in the Form 4 data.

What is William Tu’s Glass House Brands (GHBWF) direct shareholding after these transactions?

Following the May 26 transaction, William Tu’s directly held Equity Shares position is reported as zero. The Form 4 data show total shares following that final May 26 open-market sale as 0.0000, indicating no remaining direct ownership of Equity Shares.

On what dates did Glass House Brands (GHBWF) insider William Tu trade Equity Shares?

The reported transactions occurred on May 22 and May 26, 2026. On May 22, Tu executed an open-market sale and a tax-withholding disposition. On May 26, he executed an additional open-market sale that reduced his directly held Equity Shares to zero.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/26/2026 - 07:54 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Tu William

(Last) (First) (Middle)

3645 LONG BEACH BLVD

(Street)

LONG BEACH CALIFORNIA 90807

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Glass House Brands Inc. [ GLASF ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Corporate Controller

2a. Foreign Trading Symbol
[GLAS.AU]

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Equity Shares(1)	05/22/2026		F		2,910	D	$10.29(2)	15,837	D
Equity Shares(1)	05/22/2026		S		10,414	D	$10.19(3)	5,423	D
Equity Shares(1)	05/26/2026		S		5,423	D	$10.48	0	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The Subordinate Voting Shares, Restricted Voting Shares, and/or Limited Voting Shares of Glass House Brands Inc. ("GHBI") (collectively, the "Equity Shares").

2. The Equity Shares being withheld in order to pay tax liability. Represents the Equity Shares sold at a weighted average sale price of $10.29 per share. The Equity Shares were sold in multiple transactions at prices ranging from $10.25 to $10.33. The reporting person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of Equity Shares sold at each separate price.

3. Represents the Equity Shares sold at a weighted average sale price of $10.19 per share. The Equity Shares were sold in multiple transactions at prices ranging from $10.14 to $10.22. The reporting person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of Equity Shares sold at each separate price.

	/s/ Benjamin Vega, Attorney-in-Fact for William Tu	05/26/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)