DIRTT Environmental (DRTTF) director reports 32,996 DSU grant

Rhea-AI Filing Summary

DIRTT Environmental Solutions Ltd. director reported a new award of deferred share units, a form of stock-based compensation that tracks the value of the company’s common shares. On December 31, 2025, the director received 32,996 deferred share units (DSUs), each economically equivalent to one common share.

The DSUs were valued at $0.66 per unit and were granted under the company’s Long Term Incentive Plan. After this grant, the director beneficially owned 900,571 derivative securities. The DSUs will be settled only after the director’s service with the company ends and can be paid in either common shares or cash, with settlement for U.S. directors required no later than forty days after their termination date.

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

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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^*

Edwards Douglas A

(Last) (First) (Middle)

7303 30 STREET SE

(Street)

CALGARY A0 T2C1N6

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

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

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

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

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)	12/31/2025		A		32,996		(1)	(1)	Common Shares	32,996	$0.66(2)	900,571	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$0.90, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on December 30, 2025. The price was converted using the Bank of Canada exchange rate for December 30, 2025 of C$1.3693 = US$1.00.

	/s/ Fareeha Khan, as attorney-in-fact Douglas Edward	01/05/2026
	** 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).
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FAQ

What insider transaction did DRTTF report in this Form 4?

A director of DIRTT Environmental Solutions Ltd. reported receiving 32,996 deferred share units (DSUs) on December 31, 2025 as stock-based compensation.

How many DIRTT Environmental DSUs does the director own after this transaction?

Following the reported grant, the director beneficially owned 900,571 derivative securities, which include deferred share units tied to common shares.

What is a deferred share unit (DSU) for DRTTF?

Each deferred share unit is granted under DIRTT Environmental’s Long Term Incentive Plan and is the economic equivalent of one common share of the company.

When will the DIRTT Environmental DSUs be settled for the director?

All DSUs settle after the director’s cessation of service and employment with DIRTT Environmental. For U.S. directors, settlement occurs no later than forty days after the termination date.

How are the DIRTT Environmental DSUs paid out at settlement?

Each DSU will be settled in either one common share or the cash equivalent, based on the closing price of DIRTT Environmental’s common shares on the day before the 30th day following separation from service for U.S. directors.

What price was used to calculate the number of DIRTT Environmental DSUs granted?

The grant used a price of C$0.90, the Toronto Stock Exchange closing price of the common shares on December 30, 2025, converted using a Bank of Canada rate of C$1.3693 = US$1.00.