Mr. Nicholas Rodway of Core Silver reports

CORE SILVER COMPLETES ACQUISITION OF ARCUS DEVELOPMENT GROUP

Further to prior news releases of Core Silver Corp. and Arcus Development Group Inc., Core Silver has completed the previously announced acquisition of all of the issued and outstanding common shares of Arcus, effective as of Sept. 15, 2026, by way of a court-approved plan of arrangement under the Business Corporations Act (British Columbia).

The arrangement was completed pursuant to an arrangement agreement between Core Silver and Arcus dated July 9, 2026, and was approved by the Arcus shareholders at the annual general and special meeting held on Aug. 25, 2026, as well as the Supreme Court of British Columbia on Aug. 28, 2026.

Arrangement details

Pursuant to the arrangement, the shareholders of Arcus are entitled to receive one common share in the authorized capital of Core Silver in exchange for each Arcus share held immediately prior to the closing of the arrangement. As previously announced, the issued and outstanding convertible securities of Arcus, including share purchase warrants and stock options exercisable for Arcus shares, were not subject to the arrangement, and, in accordance with their terms and conditions, became exercisable for common shares of Core Silver on their original terms and conditions.

Upon completion of the arrangement, Core Silver issued 21,221,140 Core Silver shares to the former Arcus shareholders as consideration for the Arcus shares. Accordingly, the former Arcus shareholders hold approximately 39.2 per cent of the 54,141,705 issued and outstanding Core Silver shares on a non-diluted basis.

The Core Silver shares continue to trade on the Canadian Securities Exchange under the symbol CC. As a result of the arrangement, Arcus has become a wholly owned subsidiary of Core Silver and the Arcus shares are expected to be delisted from the TSX Venture Exchange following the close of markets on Sept. 15, 2026. Core Silver intends to cause Arcus to apply to cease to be a reporting issuer in the applicable jurisdictions of Canada.

Full details of the arrangement, and the exchange of securities thereunder, as described above, are set forth in the management information circular of Arcus dated July 20, 2026, which was mailed to Arcus shareholders on or about July 31, 2026, and is available on SEDAR+ under Arcus's issuer profile.

There is no finder's fee payable by the companies in connection with the arrangement.

Leadership and governance

Pursuant to the agreement, upon the closing of the arrangement, Darryl Jones, interim chief executive officer and a director of Arcus, has been appointed as a member of the board of directors of Core Silver, and the remaining directors and officers of Arcus have resigned from their respective positions with Arcus. No other changes to the board of directors of Core Silver or its management are currently expected in connection with the arrangement.

Further information for Arcus shareholders

In order to receive Core Silver shares in exchange for Arcus shares, registered Arcus shareholders must complete, sign, date and return the letter of transmittal that was mailed to each Arcus shareholder along with the Arcus circular prior to closing. The letter of transmittal is also available under Arcus's profile on SEDAR+. Arcus shareholders whose Arcus shares are registered in the name of an intermediary, such as a broker, investment dealer, bank, trust company, trust, or other intermediary or nominee, should contact such nominee for assistance in depositing their Arcus shares and should follow the instructions of such intermediary or nominee.

Advisers and legal counsel

Maarschalk Valuations Inc. acted as financial adviser to Core Silver and its board of directors. Clark Wilson LLP acted as legal counsel to Core Silver. Cozen O'Connor LLP acted as legal counsel to Arcus.

About Core Silver Corp.

Core Silver is a Canadian mineral exploration company focused on the acquisition and development of mineral projects in British Columbia, Canada. Core Silver currently holds 100-per-cent ownership in the Blue property mineral tenure, which covers a land area of 114,074 hectares (approximately 1,140 square kilometres). The project lies within the Atlin mining district, a gold mining camp located in the unceded territory of the Taku River Tlingit First Nation and the Carcross/Tagish First Nation. The Blue property hosts a major structural feature, known as the Llewellyn fault zone (LFZ). This structure is approximately 140 kilometres in length and runs from the Tally-Ho shear zone in Yukon, south through the Blue property to the Alaskan Panhandle Juneau ice sheet in the United States. Core Silver believes that the south Atlin Lake area and the LFZ has been neglected since the last major exploration campaigns in the 1980s. The LFZ plays an important role in mineralization of near-surface metal occurrences across the Blue property mineral tenure. The past 50 years have seen substantial advancements in the understanding of porphyry, skarn and carbonate replacement type deposits both globally and in British Columbia's Golden Triangle. Core Silver has leveraged this information at the Blue property mineral tenure to tailor an already proven exploration model and believes this could facilitate a major discovery. Core Silver is excited to become one of Atlin mining district's premier explorers, where its team believes there are substantial opportunities for new discoveries and development in the area.

About Arcus Development Group Inc.

Arcus was established in June, 2006, by a group of mineral industry veterans and a select group of investors with records of entrepreneurial success in a variety of business ventures. The goal of Arcus is to provide significant shareholder returns through the acquisition of interests in advanced early-stage mineral exploration projects.

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