# EDGAR Filing Document

**Accession Number:** 0001742843
**File Stem:** 0000950170-25-109804
**Filing Date:** 2025-8
**Character Count:** 6839
**Document Hash:** 45c5554fa5d7b2abfc6ec6d74db052e3
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-109804.hdr.sgml**: 20250818

**ACCESSION NUMBER**: 0000950170-25-109804

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250814

**FILED AS OF DATE**: 20250818

**DATE AS OF CHANGE**: 20250818

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** HUNTER RICHARD J
- **CENTRAL INDEX KEY:** 0001742843

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-56646
- **FILM NUMBER:** 251228594

**MAIL ADDRESS:**
- **STREET 1:** 511 E JOHN CARPENTER FREEWAY, SUITE 600
- **CITY:** IRVING
- **STATE:** TX
- **ZIP:** 75062
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DIRTT ENVIRONMENTAL SOLUTIONS LTD
- **CENTRAL INDEX KEY:** 0001340476
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A0
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 7303 30 ST S E
- **CITY:** CALGARY ALBERTA T2C 1N6 CAN
- **STATE:** A0
- **ZIP:** T2C 1N6
- **BUSINESS PHONE:** 403-723-5000

**MAIL ADDRESS:**
- **STREET 1:** 7303 30 ST S E
- **CITY:** CALGARY ALBERTA T2C 1N6 CAN
- **STATE:** A0
- **ZIP:** T2C 1N6

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>HUNTER RICHARD J<br><sub>(Last) (First) (Middle)</sub><br>511 E JOHN CARPENTER FREEWAY, SUITE 600,<br><sub>(Street)</sub><br>IRVING, TX 75062<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-08-14 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Operating Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>DIRTT ENVIRONMENTAL SOLUTIONS LTD [ DRTTF ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Shares | 2025-08-14 |  | M |  | 125000 | A | <sup>(1)</sup> | 1524696 | D |  |
| Common Shares | 2025-08-14 |  | F |  | 60508 | D | 0.57<sup>(2)</sup> | 1464188<sup>(3)</sup> | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Share Units | <sup>(1)</sup> | 2025-08-14 |  | M |  |  | 125000 | <sup>(1)</sup> | <sup>(1)</sup> | Common Shares | 125000 | $0 | 250000 | D |  |

---

### Footnotes:

(1) On August 14, 2024, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

(2) The price used to calculate the August 14 RSU vesting was C$0.78, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on August 13, 2025. The price was converted using the Bank of Canada exchange rate for August 13, 2025 of C$1.3767 = US$1.00.

(3) The Form 4 previously filed on June 10, 2025 inadvertently reported the incorrect total and the total stated here reflects the corrected amount.

**Signature:** /s/ Fareeha Khan, as attorney-in-fact for Richard Hunter  
**Date:** 2025-08-18

### Remarks:

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.**