DATA Communications Management Corp. — Regulatory Filings 2023

Apr 14, 2023

1500 Robert-Bourassa Blvd., 7th Floor Montreal QC, H3A 3S8 www.computershare.com

April 14, 2023

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To: All Canadian Securities Regulatory Authorities

Subject: DATA COMMUNICATIONS MANAGEMENT CORP.

Dear Sir/Madam:

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

Meeting Type : Annual and Special Meeting Record Date for Notice of Meeting : May 05, 2023 Record Date for Voting (if applicable) : May 05, 2023 Beneficial Ownership Determination Date : May 05, 2023 Meeting Date : June 15, 2023 Meeting Location (if available) : Toronto, On 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 No

Voting Security Details:

Description CUSIP Number ISIN COMMON SHARES 23761M102 CA23761M1023

Sincerely,

Computershare

Agent for DATA COMMUNICATIONS MANAGEMENT CORP.