Mountain Province Diamonds Announces Revised Details for Q4 and Full-Year 2025 Earnings Release and Conference Call

Press Release

TORONTO and NEW YORK, March 24, 2026  – Mountain Province Diamonds Inc. (“Mountain Province” or the “Company”) (TSX: MPVD) and (OTC: MPVD) announces revised details for its fourth quarter and full-year 2025 earnings release and conference call. The delay in the issuance of fourth quarter and year-end 2025 results is due to the financial audit process not being completed by the planned date.

Revised Earnings Release and Conference Call Details

Prior to the conference call, the Company will release Q4 and full-year 2025 financial results on March 31, 2026 after-market, in line with its statutory reporting deadline. The Company will now host its fourth quarter and full-year 2025 conference call on 01 April, 2026 at 11:00am ET.

Conference Call Dial-in Details:

Title: Mountain Province Diamonds Inc Q4 2025 and Full-Year 2025 Earnings Conference Call

Conference ID: 34420

Date of call: 04/01/2026

Time of call: 11:00 Eastern Time

Expected Duration: 60 minutes

Webcast Link:

https://app.webinar.net/wqvjeyWlN8L

Participant Toll-Free Dial-In Number:             (+1) 888-699-1199

Participant International Dial-In Number:       (+1) 416-945-7677

A replay of the webcast and audio call will be available on the Company’s website.

About Mountain Province Diamonds Inc.

Mountain Province is a 49% participant with De Beers in the Gahcho Kué Mine (the “GK Mine”) located in Canada’s Northwest Territories. The GK Mine joint venture property consists of several kimberlites that are actively being mined, developed, and explored for future development. The Company also controls more than 96,000 hectares of highly prospective mineral claims and leases surrounding the GK Mine that include an indicated mineral resource for the Kelvin kimberlite and inferred mineral resources for the Faraday kimberlites.

For further information on Mountain Province Diamonds and to receive news releases by email, visit the Company’s website at www.mountainprovince.com.

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