Ms. Sophy Cesar reports

UPSIDE GOLD CORP. FINALIZES ACQUISITION OF STRATEGIC HIGH-GRADE GOLD CLAIMS ADJACENT TO THE KENA PROJECT

Further to the news release dated April, 27, 2026, Upside Gold Corp. has signed a claim acquisition agreement with a local prospector to acquire a 100-per-cent interest in seven mineral claims totalling approximately 273 hectares located on the northwestern side of the company's Kena gold-copper property in southeastern British Columbia.

"Finalizing this acquisition is an important step in strengthening the continuity of the Kena project," said Sophy Cesar, chief executive officer and director of Upside Gold. "The historical high-grade production associated with these claims complements our broader district-scale exploration strategy and adds additional upside potential as we continue advancing the Kena."

The claims cover historically mineralized areas and strengthen the continuity of the Kena land package by connecting adjacent ground along a prospective mineralized trend.

Historically, the area formed part of the Venus-Juno group, consisting of six reverted Crown grants that recorded past production of approximately 5,411 tonnes grading an average of 19.8 grams per tonne gold and 17.7 g/t silver, with minor copper and lead credits, during the first half of the 20th century. This history of high-grade production supports the presence of mineralization within the broader district and reinforces the exploration potential of this largely underexplored portion of the project.

Under the terms of the agreement, the company will acquire a 100-per-cent interest in the claims for cash consideration, common shares of the company and a 0.5-per-cent net smelter return royalty subject to Canadian Securities Exchange approval. The company retains the right to repurchase the NSR.

The company intends to integrate the newly acquired claims into its broader exploration strategy at the Kena, including continuing evaluation of prospective gold, silver and copper mineralization trends across the project.

The information in this press release has been reviewed and approved by Trevor Boyd, PGeo, vice-president, exploration, of the company, a qualified person for the technical information under National Instrument 43-101 standards.

About Upside Gold Corp.

Upside Gold is a Canadian gold-copper exploration company that has entered into an option agreement to acquire a 100-per-cent interest in the Kena gold-copper project, located in southeastern British Columbia, approximately seven kilometres southwest of Nelson. The Kena project consists of 198 mineral claims covering 10,114.8 hectares, together with 11 Crown grants covering approximately 92 hectares.

The corporation is focused on advancing the Kena gold-copper project through systematic exploration and drilling programs.

The Kena project hosts a historical gold resource comprising an indicated mineral resource of 32,146,000 tonnes at an average grade of 0.544 gram per tonne gold for 561,000 ounces of gold, and an inferred mineral resource of 177,507,000 tonnes at an average grade of 0.486 g/t Au for 2.77 million ounces of gold. The historical resource estimate is disclosed in the technical report entitled "NI 43-101 Resource Estimate for the Kena and Daylight Properties" prepared by Sue Bird, PEng, of Moose Mountain Technical Services, dated May 3, 2021, and filed on SEDAR+ on behalf of West Mining Corp.

A qualified person, as defined by National Instrument 43-101, has not done sufficient work to classify the historical estimate as current mineral resources, and Upside Gold is not treating the historical estimate as current mineral resources. The historical estimate is provided for information purposes only and should not be relied upon.

To upgrade the historical estimate as current mineral resource, additional drilling needs to be completed. The historical estimate uses the categories set out in Section 1.2 of National Instrument 43-101. The assumptions used are outlined in Bird 2021 and are provided as follows:

1. Resources are reported using the 2014 Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards and were estimated using the 2019 CIM Best Practices Guidelines.
2. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
3. The mineral resource has been confined by a reasonable prospect of eventual economic extraction pit using the following assumptions: $2,000 (U.S.) per ounce; gold at a currency exchange rate of 77 U.S. cents per $1 (Canadian); 99.95 per cent payable Au; $4.30-per-ounce-gold off-site costs (refining, transport and insurance); a 3-per-cent net smelter return royalty; and an 88-per-cent metallurgical recovery for gold.
4. Pit slope angles are assumed at 45 degrees.
5. The specific gravity of the deposit has been assigned as 2.8 based on specific gravity measurements in the Kena deposit.

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