DIRTT Environmental Solutions Ltd. — Regulatory Filings 2024

Jul 23, 2024

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Date: July 23, 2024

324-8th Avenue SW, 8th floor Calgary AB, T2P 2Z2 www.computershare.com

To: All Canadian Securities Regulatory Authorities

Subject: DIRTT ENVIRONMENTAL SOLUTIONS LTD.

Dear Sir/Madam:

We advise of the following with respect to the upcoming Meeting of Security Holders for the subject Issuer:

Meeting Type : Special Meeting Record Date for Notice of Meeting : August 01, 2024 Record Date for Voting (if applicable) : August 01, 2024 Beneficial Ownership Determination Date : August 01, 2024 Meeting Date : September 20, 2024 Meeting Location (if available) : Virtual Meeting Issuer sending proxy related materials directly to NOBO: No Issuer paying for delivery to OBO: Yes

Notice and Access (NAA) Requirements:

NAA for Beneficial Holders Yes Beneficial Holders Stratification Criteria: Not Applicable NAA for Registered Holders Yes Registered Holders Stratification Criteria: Not Applicable

Voting Security Details:

Description CUSIP Number ISIN COMMON SHARES 25490H106 CA25490H1064

Sincerely,

Computershare

Agent for DIRTT ENVIRONMENTAL SOLUTIONS LTD.