Disseminated on behalf of Star Copper Corp. and Zimtu Capital Corp.

Star Copper Mobilizes 2025 Summer Exploration Targeting Expansion of Existing Discovery

Company set to build asset value in prolific "Golden Triangle"

Today, Star Copper Corp. (CSE: STCU | OTC: STCUF | FWB: PP0) (“Star Copper” or the “Company”) announced that equipment and crew have been mobilized to shortly commence drilling and other exploration activities in the field. Today's news officially kicks off Star Copper's 2025 drill plans at its flagship asset, the Star Project, located in the heart of the prolific industry recognized "Golden Triangle" of northwestern British Columbia.

The Star Project spans 6,829 hectares and is 100% owned by Star Copper. The property, and this current exploration program, are fully permitted under a Multi-Year Area-Based (MYAB) Notice of Work, enabling current and future exploration. Situated in a tier-one jurisdiction, the project boasts over $10 million in historical exploration efforts, including geophysical and geochemical surveys, trenching, soil sampling, and more than 13,000 meters of drilling from 49 diamond drill holes, which have confirmed the presence of a calc-alkalic porphyry copper-gold system.

The campaign builds upon a significant historical exploration database and incorporates newly reinterpreted magnetic data to guide the next phase of high-impact drilling. Additionally, the Company will be looking to test the contiguous Star North and Star East claims through targeted sampling and trenching to confirm the geotechnical work which indicates similar characteristics to the Star Main deposit.

Darryl Jones, Star Copper's CEO, comments, "Embarking on our maiden program at Star is an exciting time for our shareholders, as this property has remained amazingly untouched in more than a decade. Our team's efforts to-date lead us to believe that the Star Project holds significant potential based on the inherent mineralization characteristics and geological trend data evident throughout the property. We are very eager to advance the Star North and East projects to further deliver potentially new discoveries aimed at unlocking the true value of the Star Project for our company, stakeholders, and shareholders alike."

2025 Exploration Overview

The fully funded $2.5 million campaign is scheduled to run until August 15, 2025, and incorporates a strategic plan already underway with the field crew currently moving to build a base camp supported by full onsite logistical capabilities. Once established, the team will situate new drill pads to undertake a 3,500-metre diamond drill core sampling program based on six drill holes with an additional 650 metres of contingency drilling allocated.

Key program objectives include:

• Expanding the known mineralized envelope of the Star Main zone
• Testing deeper porphyry potential and structural offsets
• Following up on mineralization associated with the recently modeled Star Fault

Drill Targeting Basis

The program will utilize integrated 3D inversion modeling of 2013 airborne magnetic data, which was completed by Ronacher MacKenzie Geoscience. The new geophysical interpretation, along with trench mapping and core analysis, has confirmed a complex left-lateral strike-slip system and defined key structural features identified as:

• The Star Fault: A mineralized thrust-related structure that segments higher-grade mineralization in the northeast and offsets deeper mineralization to the southwest.
• The Dick Creek Fault and Hackett Valley Fault: Large-scale regional fault corridors that outline the structural controls of mineral emplacement.

The refined modeling is being used to position drill holes to test both near-surface and deep mineralization, including areas previously untested by drilling.

Selected Drill Targets for 2025

The planned holes include follow-ups on the following successful historical intercepts:

Please refer to the Company's February 26, 2025 technical report on the Star Project for more information in respect of the project, including historical drilling, available under the Company's profile at www.sedarplus.ca.

Once constructed, the new drill pads will also test untested magnetic anomalies, soil geochemical highs, and deep extensions of chargeability zones with the goal of expanding the known deposit at Star, both laterally as well to depth. Drill holes have not exceeded 660m in previous programs but the mineralization down hole shows the potential for much deeper targeting. The extensive supergene zone discovered at surface is exceptionally rare and the Company is excited to enhance the historic drilling with its own program this summer.

Qualified Person

Jeremy Hanson, P. Geo., a Qualified Person as that term is defined under NI 43-101, is an advisor to the Company and has reviewed and approved the technical aspects of this news release.

About Star Copper Corp. (CSE:STCU)(OTC PINK:STCUF)(FWB:SOP / WKN A416ME)

Star Copper Corp. is a Canadian-based exploration and development company focused on developing high-potential copper projects in mining-friendly jurisdictions. The Company aims to advance its British Columbian flagship Star Project where significant exploration work including historical drilling has confirmed open mineralization at depth and in all directions. Star Copper's strategic plans include geological mapping and geophysical surveys to refine existing targets, diamond drilling programs to test high-priority zones,environmental baseline studies and permitting groundworkalongside data analysis and resource modeling to support a future NI 43-101 compliant resource estimate. The Company further plans to advance its Indata Project with follow-up drilling to expand on previous high-grade copper and gold intercepts, trenching and surface sampling to delineate mineralized zones,and infrastructure improvements for site accessibility and operations. With a commitment to sustainable development and value creation, Star Copper is positioned to pursue its goal of supporting surging industrial demand to meet growing global electrification needs.

For more information visit: www.starcopper.com and to sign up for free news alerts please go to https://starcopper.com/news/news-alerts/, or follow us on X (formerly Twitter), Facebook or LinkedIn.

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Star Copper News-Disclaimer: Cautionary Note Regarding Forward-Looking Statements: This news release contains forward-looking statements and other statements that are not historical facts. Forward-looking statements are often identified by terms such as "will", "may", "should", "anticipate", "expects" and similar expressions. All statements other than statements of historical fact, included in this news release are forward-looking statements that involve risks and uncertainties. Forward-looking statements in this press release include, but are not limited to, statements regarding the proposed exploration of the Star Project. There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from the Company's expectations include but are not limited to market conditions and the risks detailed from time to time in the filings made by the Company with securities regulators. The reader is cautioned that assumptions used in the preparation of any forward-looking information may prove to be incorrect. Events or circumstances may cause actual results to differ materially from those predicted, as a result of numerous known and unknown risks, uncertainties, and other factors, many of which are beyond the control of the Company. The reader is cautioned not to place undue reliance on any forward-looking information. Such information, although considered reasonable by management at the time of preparation, may prove to be incorrect and actual results may differ materially from those anticipated. Forward-looking statements contained in this news release are expressly qualified by this cautionary statement. The forward-looking statements contained in this news release are made as of the date of this news release and the Company will update or revise publicly any of the included forward-looking statements as expressly required by applicable law.

Rockstone Disclaimer: This announcement and the referenced Rockstone report contain forward-looking information or forward-looking statements (collectively "forward-looking information") within the meaning of applicable securities laws. Forward-looking information is typically identified by words such as: "believe", "expect", "anticipate", "intend", "estimate", "potentially" and similar expressions, or are those, which, by their nature, refer to future events. Rockstone Research, Star Copper Corp. and Zimtu Capital Corp. caution investors that any forward-looking information provided herein is not a guarantee of future results or performance, and that actual results may differ materially from those in forward-looking information as a result of various factors. The reader is referred to Star Copper Corp.´s public filings for a more complete discussion of such risk factors and their potential effects which may be accessed through its profile on SEDAR at www.sedarplus.ca. Please read the full disclaimer within the full research report as a PDF (see here or here) as fundamental risks and conflicts of interest exist. The author, Stephan Bogner, currently does not hold an equity position in Star Copper Corp., however he owns equity of Zimtu Capital Corp., and thus will profit from volume and price appreciation of its stock. The author is being paid by Zimtu Capital Corp. for the preparation, publication and distribution of this report, whereas Zimtu Capital Corp. holds an equity position in Star Copper Corp. and thus will profit from volume and price appreciation. Note that Star Copper Corp. pays Zimtu Capital Corp. to provide this report and other investor awareness services. Also note that Star Copper Corp. has common directors with Zimtu Capital Corp.