DIRTT Environmental Solutions Ltd. — Proxy Solicitation & Information Statement 2024

Aug 17, 2024

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DIRTT ENVIRONMENTAL SOLUTIONS LTDForm of Proxy - Special Meeting to be held on Friday, September 20, 2024020NXAThis Form of Proxy is solicited by and on behalf of the Board of Directors.FoldFoldNotes to proxy

1. Every holder has the right to appoint some other person or company of their choice, who need not be a holder, to attend and act on their behalf at the meeting or any adjournment or postponement thereof. If you wish to appoint a person or company other than the Management Nominees whose names are printed herein, please insert the name of your chosen proxyholder in the space provided (see reverse).

2. If the securities are registered in the name of more than one owner (for example, joint ownership, trustees, executors, etc.), then all those registered should sign this proxy. If you are voting on behalf of a corporation or another individual you may be required to provide documentation evidencing your power to sign this proxy with signing capacity stated.

3. This proxy should be signed in the exact manner as the name(s) appear(s) on the proxy.

4. If a date is not inserted in the space provided on the reverse of this proxy, it will be deemed to bear the date on which it was mailed to the holder by Management.

5. The securities represented by this proxy will be voted as directed by the holder, however, if such a direction is not made in respect of any matter, and the proxy appoints the Management Nominees listed on the reverse, this proxy will be voted as recommended by Management.

6. The securities represented by this proxy will be voted in favour, or withheld from voting, or voted against each of the matters described herein, as applicable, in accordance with the instructions of the holder, on any ballot that may be called for. If you have specified a choice with respect to any matter to be acted on, the securities will be voted accordingly.

7. This proxy confers discretionary authority in respect of amendments or variations to matters identified in the Notice of Meeting and Proxy Statement or other matters that may properly come before the meeting or any adjournment or postponement thereof, unless prohibited by law.

8. This proxy should be read in conjunction with the accompanying documentation provided by Management.

Proxies submitted must be received by 10:00 am, Mountain Time, on Wednesday, September 18, 2024.370739020NYAFoldFoldSignature of Proxyholder

• I/We authorize you to act in accordance with my/our instructions set out above. I/We hereby revoke any proxy previously given with respect to the Meeting. If no voting instructions are indicated above, and the proxy appoints the Management Nominees, this Proxy will be voted as recommended by Management.MM / DD / YY

DateSignature(s)

• I/We being holder(s) of securities of DIRTT Environmental Solutions Ltd.

• (the “Company”) hereby appoint: Benjamin Urban, Chief Executive Officer of the Company, or failing this person, Fareeha Khan, Chief Financial Officer of the Company (the “Management Nominees”) as my/our proxyholder with full power of substitution and to attend, act and to vote for and on behalf of the holder in accordance with the following direction (or if no directions have been given, as the proxyholder sees fit) and on all other matters that may properly come before the Special Meeting of shareholders of the Company to be held virtually online at https://meetnow.global/MCX7XXF on Friday, September 20, 2024 at 10:00 am (Mountain Time), and at any adjournment or postponement thereof.Appointment of ProxyholderPrint the name of the person you are appointing if this person is someone other than the Management Nominees listed herein.ORVOTING RECOMMENDATIONS ARE INDICATED BY HIGHLIGHTED TEXT OVER THE BOXES.Note: If completing the appointment box above YOU MUST go to

• http://www.computershare.com/DIRTT and provide Computershare with the name and email address of the person you are appointing. Computershare will use this information ONLY to provide the appointee with an invite code to gain entry to the online meeting.

• The ratification, confirmation and approval of the Amended and Restated Shareholder Rights Plan Agreement, dated as of August 2, 2024, by and between DIRTT