Mr. Adam Travis reports

COAST COPPER ANNOUNCES RECEIPT OF $800,000 FROM EXERCISE OF WARRANTS AND FILING OF EARLY WARNING REPORT

All eight million common share purchase warrants with an exercise price of 10 cents, and whose expiry date was accelerated to July 17, 2026 (announced June 4, 2026), have been exercised, bringing in a total of $800,000 into treasury. Approximately 49 per cent of the warrants were held by insiders of Coast Copper Corp.

The company is also pleased to announce that an early warning report (EWR) was filed by Michael Kosowan, a shareholder of the company. On July 15, 2026, Mr. Kosowan acquired one million common shares of the company by way of exercising one million of the warrants for an aggregate cost of $100,000. The transaction has triggered the requirements to file an EWR as Mr. Kosowan's ownership and control and direction over the common shares of the company has increased by more than 2 per cent of the issued and outstanding common shares of the company since the date of Mr. Kosowan's previous early warning report dated Jan. 14, 2026. Immediately after the transaction, Mr. Kosowan beneficially owns and has control and direction over 11,801,500 common shares and two million common share purchase warrants of the company, representing approximately 14.10 per cent of the company's issued and outstanding shares on an undiluted basis and approximately 16.10 per cent of the company's issued and outstanding shares on a partially diluted basis (assuming the exercise of the warrants held by Mr. Kosowan). As a result of the transaction, Mr. Kosowan's ownership and control and direction over the common shares of the company has increased by approximately 2.36 per cent on an undiluted basis, and approximately 0.96 per cent on a partially diluted basis (assuming the exercise of the warrants held by Mr. Kosowan) since the date of the prior EWR.

Adam Travis, chief executive officer, comments: "We are extremely pleased to announce the successful exercise of all eight million warrants. Coast Copper is continuing to deliver on its strategy of divesting some of its non-core projects (see Ben Nevis sale to Talisker Resources announced on July 6, 2026), and together with prudent fiscal management, we continue to add value while still advancing our flagship projects. With 49 per cent of the warrants having been exercised by insiders, and with Mr. Kosowan's continued investment, this demonstrates the deep confidence our team and major shareholders have in the company's direction and the future potential of our Vancouver Island and regional properties."

Mr. Kosowan acquired these shares for the purposes of an investment and depending on market and other conditions, Mr. Kosowan may, from time to time, in the future increase or decrease his ownership, control or direction over securities of the company, through market transactions, private agreements or otherwise. This press release is being disseminated pursuant to National Instrument 62-103 -- The Early Warning System and Related Take Over Bids and Insider Reporting Issues with respect to the filing of an early warning report by Mr. Kosowan.

To obtain a copy of the full EWR, please visit the company's SEDAR+ profile or contact the company's CEO Mr. Travis by telephone at 877-578-9563.

Including Mr. Kosowan's shareholdings, the directors, officers and insiders of the company presently own approximately 40.95 per cent of the company's issued and outstanding shares on an undiluted basis, and approximately 47.79 per cent of the company's issued and outstanding shares on a partially diluted basis (assuming the exercise of warrants held by the insiders).

About Coast Copper Corp.

Coast Copper is a British Columbia-focused mineral exploration company advancing district-scale copper and precious metals opportunities through disciplined capital allocation. The company's flagship assets include the Copper Kettle copper-gold-molybdenum project on northern Vancouver Island, the Empire mine copper-gold project, and the Virginia silver and Sweeney silver projects. Coast Copper also maintains a portfolio of earlier-stage exploration properties that provide opportunities for strategic partnerships, asset sales and option agreements designed to generate capital while minimizing shareholder dilution.

We seek Safe Harbor.