DIRTT director granted 40,017 deferred share units

Groos Holyce Hess reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Groos Holyce Hess reported acquisition or exercise transactions in this Form 4 filing.

DIRTT Environmental Solutions Ltd. director Holyce Hess Groos received a grant of 40,017 deferred share units on a grant date in late June 2026. Each deferred share unit is economically equivalent to one common share and will be settled after the director’s service with the company ends.

The filing shows a reference price of $0.50 per unit for the grant, with 236,412 deferred share units held by the director after this award. Footnotes explain that the units were calculated using a Canadian dollar share price of C$0.71 and a Bank of Canada exchange rate of C$1.4206 per US$1.00.

Insider Trade Summary

Grant/Award: 40,017 shares

Grant/Award 1 txn

Insider Groos Holyce Hess

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Deferred Share Unit	40,017	$0.50	$20K

Holdings After Transaction: Deferred Share Unit — 236,412 contracts (Direct)

Footnotes (2)

1. F1. Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors.
2. F2. The price used to calculate the number of DSUs granted was C$0.71, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 29, 2026. The price was converted using the Bank of Canada exchange rate for June 29, 2026 of C$1.4206 = US$1.00.

Key Figures

Deferred share units granted: 40,017 units Total DSUs after transaction: 236,412 units Reference grant price: $0.50 per unit +2 more

5 metrics

Deferred share units granted 40,017 units Grant of deferred share units on transaction date in June 2026

Total DSUs after transaction 236,412 units Director’s deferred share unit holdings following the grant

Reference grant price $0.50 per unit Transaction price per deferred share unit in the Form 4 table

TSX closing price C$0.71 per share DIRTT common share closing price on June 29, 2026 used to calculate DSUs

FX rate C$1.4206 = US$1.00 Bank of Canada exchange rate on June 29, 2026 used for conversion

Key Terms

Deferred Share Unit, Third Amended and Restated Long Term Incentive Plan, Termination Date, US Directors, +1 more

5 terms

Deferred Share Unit financial

"Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third Amended and Restated Long Term Incentive Plan"

Third Amended and Restated Long Term Incentive Plan financial

"Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third Amended and Restated Long Term Incentive Plan"

Termination Date financial

"All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date")."

Termination date is the specific calendar day when a contract, agreement, option or other legal arrangement stops being in effect and any remaining rights or obligations expire. For investors it matters because that date sets deadlines for exercising rights, receiving payments, closing positions or avoiding penalties—similar to the day a lease or warranty ends, after which parties no longer have the same protections or claims.

US Directors financial

"For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days"

Bank of Canada exchange rate financial

"The price was converted using the Bank of Canada exchange rate for June 29, 2026 of C$1.4206 = US$1.00."

FAQ

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

What did DIRTT Environmental Solutions (DRTTF) disclose in this Form 4?

DIRTT Environmental Solutions disclosed that director Holyce Hess Groos received 40,017 deferred share units, each equivalent to one common share. The grant was made under the company’s long-term incentive plan and increases the director’s total deferred share unit holdings to 236,412.

How many deferred share units did the DRTTF director receive and at what price?

The director received 40,017 deferred share units with a reference price of $0.50 per unit. Footnotes state the units were based on a C$0.71 common share price on the Toronto Stock Exchange, converted using an exchange rate of C$1.4206 per US$1.00.

When will the DIRTT Environmental Solutions deferred share units settle?

The deferred share units will settle after the director’s service and employment with DIRTT Environmental Solutions ends. For U.S. directors, settlement must occur no later than forty days after the termination date, in either common shares or an equivalent cash amount based on the share price.

What is a deferred share unit in the context of DIRTT Environmental Solutions (DRTTF)?

A deferred share unit is an award economically equivalent to one common share of DIRTT Environmental Solutions. It is granted under the company’s long-term incentive plan and typically settles in shares or cash after the director’s service ends, aligning compensation with shareholder value over time.

How many deferred share units does the DIRTT Environmental Solutions director hold after this grant?

After this grant, the director holds 236,412 deferred share units. This total includes the newly granted 40,017 units and represents the director’s accumulated incentive awards tied to DIRTT Environmental Solutions’ common shares under the long-term incentive plan.

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

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Accepted by SEC EDGAR 07/02/2026 - 02:11 PM 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^*

Groos Holyce Hess

(Last) (First) (Middle)

7303 30 STREET SE

(Street)

CALGARY T2C1N6

(City) (State) (Zip)

ALBERTA, CANADA

(Country)

2. Issuer Name and Ticker or Trading Symbol
DIRTT ENVIRONMENTAL SOLUTIONS LTD [ DRTTF ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

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

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
Deferred Share Unit	(1)	06/30/2026		A		40,017		(1)	(1)	Common Shares	40,017	$0.5(2)	236,412	D

Explanation of Responses:

1. Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors.

2. The price used to calculate the number of DSUs granted was C$0.71, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 29, 2026. The price was converted using the Bank of Canada exchange rate for June 29, 2026 of C$1.4206 = US$1.00.

	/s/ Fareeha Khan, as attorney-in-fact Holly Hess Groos	07/02/2026
	** 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)