Star Copper Corp. / CA85512H1047

Vancouver, British Columbia July 16, 2025 / IRW-Press / Star Copper Corp. (CSE: STCU) (OTCQX: STCUF) (FWB: SOP) (“ Star Copper ” or the “ Company ”), a critical mineral exploration and development company, is pleased to announce the execution of a definitive agreement (the “ Agreement ”) to acquire (the “ Acquisition ”) a 100% interest in the Copperline property (“ Copperline ”, the “ Property ” or the “ Copperline Property ”) in north-central British Columbia.

" The Copperline property is an exciting new addition to our growing portfolio of high-grade copper assets in British Columbia," said Darryl Jones, CEO of Star Copper Corp. " With its compelling geology, good access to infrastructure, and strong historical grades, Copperline represents an excellent redevelopment copper-silver project in a proven metals belt."

The Copperline property consists of eight mineral claims totaling approximately 4,502 hectares near Skutsil Knob at the southern end of the Driftwood Mountain Range, approximately 120 kilometers north-northeast of Smithers, British Columbia (Figure 1).

Under the Agreement, the Company agrees to acquire Copperline in exchange for (i) cash, (ii) common shares of the Company (“ Common Shares ”), (iii) the grant of a net smelter royalty (as defined below), and (iv) an incentive payment (as defined below), subject to certain conditions.

Highlights

- High-grade copper-silver occurrences : Drilling and surface sampling returned intervals of 25.0 m with 2.54% Cu, 50.4 g/t Ag (DR-9) 2 , 3.7 with 2.5% Cu, 76.6 g/t Ag (CL-16) 3 and Grab samples of up to 8.51% Cu and 200 g/t Ag 5 .

- Favourable geology : Mineralisation consists of fine-grained bornite, chalcocite, tetrahedrite and chalcopyrite in subaerial Telkwa volcanic rocks, consistent with models of volcanic redbed copper deposits 4 .

- Good infrastructure & access : Only 5 kilometers from forest roads and 11 kilometers from the BC Rail Dease Lake extension project 5 (Figure 1).

- Exploration Advantage : Several new mineralized zones were discovered in 2003, including the West Zone and the Dave Zone. Grab samples from the West Zone averaged 2.8% Cu and 71 g/t Ag, and one sample from the Dave Zone averaged 0.17% Cu and 229 g/t Ag . Mineralized zones and interpreted structural controls indicate the potential for stacked lenses. Several rusty zones were discovered during prospecting northeast of the Main Zone, indicating the discovery of additional potential mineralized zones.

- The Company intends to collect data and create an initial 3D model of the Copperline system to plan the initial exploration program.

Figure 1: Map showing the regional location of the Copperline project (behind Prosper Gold).

Overview of the property

The Copperline property consists of eight mineral claims totaling approximately 4,502 hectares in north-central British Columbia near Skutsil Knob at the southern end of the Driftwood Range. The property is located approximately 120 kilometers north-northeast of Smithers and benefits from excellent regional infrastructure, proximity to forestry roads (within 5 kilometers) and the BC Rail Dease Lake extension project (within 11 kilometers), and the potential for hydroelectricity from the nearby Kotsine River. The property is accessible by road to within 5 kilometers of the main mineralized zone, allowing for efficient mobilization of exploration crews and equipment.

Geologically, subaerial volcanic rocks of the Lower Jurassic Telkwa Formation, part of the Hazelton Group, underlie the Copperline property. These rocks include andesite and basalt flow, breccia, and volcaniclastic rocks, interspersed with sedimentary units such as redbeds and siltstones. The stratigraphy dips gently to the east and is interrupted by north-northwest-trending fault zones and fracture corridors, which are interpreted to control the copper-silver mineralization.

The copper-silver mineralization on the property is characteristic of volcanic redbed copper systems and consists of disseminated and vein-controlled sulfides, including bornite, chalcocite, chalcopyrite, and tetrahedrite. Mineralization is typically hosted within massive volcanic units and associated with secondary structures such as shear zones, fractures, and parallel veins. Key alteration components include epidote, chlorite, calcite, hematite, and silica, with rusty zones and green alteration halos that act as reliable visual pathfinders in outcrop and float.

Historical exploration dates back to the 1930s, with trenching by Cominco, followed by diamond drilling in the 1970s by Craigmont Mines Ltd. and further work by Kit Resources Ltd. in the early 2000s.

Important historical drilling results include:

Craigmont Mines Ltd. (1973–1974)*

DR-9 :

25.0 m @ 2.54% Cu , 50.4 g/t Ag Including: 38.7 m @ 1.82% Cu, 37.7 g/t Ag Also: 7.7m @ 1.80% Cu, 37.7 g/t Ag

DR-11 :

9.1 m @ 2.94% Cu , 83.3 g/t Ag 6.1m @ 1.24% Cu, 68.9 g/t Ag 8.5m @ 0.61% Cu, 11.0 g/t Ag

DR-12 :

3.0 m @ 3.05% Cu , 78.9 g/t Ag 9.7m @ 1.01% Cu, 37.4 g/t Ag 2.4m @ 2.00% Cu, 41.1 g/t Ag

DR-1 :

12.2m @ 1.62% Cu, 35.0 g/t Ag 12.2m @ 1.25% Cu, 27.4 g/t Ag 4.9m @ 0.90% Cu, 23.0 g/t Ag

*Drill data collected by Craigmont Mines in ARIS 27276

Kit Resources Ltd. (2003)

CL-16 :

14.3 m @ 0.812% Cu , 25.843 g/t Ag

- Including:

- 3.7m @ 2.512% Cu , 76.667 g/t Ag

- 7.6m @ 0.301% Cu, 10.887 g/t Ag

21.0 m @ 0.385% Cu , 13.261 g/t Ag

- Including:

- 6.7m @ 0.471% Cu, 21.285 g/t Ag

- 7.8m @ 0.605% Cu, 16.463 g/t Ag

CL-14 :

22.6m @ 0.216% Cu, 5.182 g/t Ag

- Including:

- 3.4m @ 0.810% Cu, 18.821 g/t Ag

In 2003, Kit Resources also discovered additional mineralized zones northeast of the Main Zone, including the West Zone and the Dave Zone. The West Zone returned values of 2.82% Cu and 71.44 g/t Ag, and a sample from the Dave Zone returned 0.17% Cu and 229 g/t Ag. These results highlighted the potential for multiple stacked lenses, or structurally controlled zones, within the broader Property 3 area .

Star Copper plans to collect master data, create a 3D geological model, and conduct a staged exploration program including surface mapping, geophysical surveys (IP and magnetic), and diamond drilling focused on expanding the Main Zone and identifying new target areas.

Declaration according to National Instrument 43-101

Nicholas Rodway, P.Geo., (EGBC License No. 46541) (Professional Permit No. 100359), is an independent contractor to the Company and a Qualified Person as defined by National Instrument 43-101. Mr. Rodway has reviewed and approved the technical content of this news release.

Conditions of the takeover

On July 14, 2025, the Company entered into an agreement with Zimtu Capital Corp. (TSXV: ZC) (the " Vendor "); Zimtu is not an "affiliate person" of the Company as defined in the policies of the Canadian Securities Exchange (" CSE "). Pursuant to the Agreement, the Company agreed to acquire Copperline from the Vendor in consideration for:

- Cash payments totaling $350,000, consisting of (i) a payment of $100,000 on the date the Acquisition is signed (the " Signing Date ") and (ii) a payment of $250,000 on the first business day six (6) months after the Signing Date (the " Closing Date ").

- The issuance of 500,000 ordinary shares (the “ Consideration Shares ”), with (i) 200,000 Consideration Shares being issued on the Signing Date and (ii) 300,000 Consideration Shares being issued on the Closing Date; and

- The grant to the Vendor of a 2% net smelter royalty payable on all production from the Copperline Property, with 1% available for repurchase by the Company at any time within a period of five (5) years from the signing date for a one-time payment of $1 million (the " Net Smelter Royalty ").

In addition to the foregoing, the Company is publishing a mineral resource estimate in accordance with NI 43-101F1 Form 43-101 for the Copperline Property (the " Resource Estimate ") and is disclosing any combination of Measured, Indicated, or Inferred Resources in excess of either (i) 500,000,000 pounds of copper or (ii) 15,000,000 ounces of silver. In such event, the Company will pay the Vendor an additional $1.5 million (the " Bonus "), consisting of:

- A cash payment of $750,000; and

- the issuance of common shares with an aggregate value of $750,000 (the " Bonus Shares "), at an issue price per Bonus Share equal to the 10-day volume weighted average of the Common Shares on the CSE or such other exchange on which the Common Shares may be listed from time to time, immediately prior to the release of the resource estimate.

The Compensation Shares and the Bonus Shares (if applicable) are subject to a statutory holding period of four months and one day from the date of issue of such Ordinary Shares.

Completion of the Acquisition is subject to certain conditions and approvals, including (i) the execution of a net smelter royalty agreement in accordance with the terms and conditions set forth in the Agreement; (ii) receipt of all necessary consents and regulatory approvals, including, without limitation, acceptance by the TSX Venture Exchange (" TSXV ") and approval by the CSE; and (iii) all customary conditions applicable to a transaction such as the Acquisition. The Acquisition is not subject to any conditions upon the completion, in part or otherwise, of the LIFE Offering (as defined below).

LIFE Flow-Through Offer

The Company is pleased to announce that it intends to complete a non-brokered private placement for gross proceeds of up to C$2,500,000.50 from the sale of up to 1,666,667 flow-through units of the Company (each, a " FT Unit " and collectively, the " FT Units ") at a price of C$1.50 per FT Unit (the " LIFE Offering ") under the Listed Issuer Financing Exception (as defined below).

Each FT Unit consists of one flow-through common share (each, an " FT Share " and collectively, " FT Shares ") and one flow-through common share purchase warrant (each, an " FT Warrant " and collectively, " FT Warrants "), which will be issued as "flow-through shares" as defined in subsection 66(15) of the Income Tax Act (Canada) (the " Tax Act "). Each FT Warrant will be exercisable for one common share (each, a " Warrant Share " and collectively, " Warrant Shares ") at a price of $1.60 per Warrant Share for a period of 24 months from the LIFE Closing Date (as defined below). The Warrant Shares underlying the FT Units are not considered "flow-through shares" for purposes of the Tax Act. The FT Warrants to be issued under the LIFE Offering will not be listed for trading on any exchange. The LIFE Offering is expected to close on or about July 23, 2025 (the " LIFE Closing Date ") or such other date as the Company may determine, but such date will not be later than 45 days after the date the Company announces the LIFE Offering in a press release.

Subject to compliance with applicable regulatory requirements and in accordance with National Instrument 45-106 - Prospectus Exemptions (" NI 45-106 "), the LIFE Offering will be made to purchasers residing in all provinces of Canada, except Quebec, pursuant to the Listed Issuer Financing Exemption under Part 5A of NI 45-106 (the " Listed Issuer Financing Exemption "). The securities offered under the Listed Issuer Financing Exemption are not subject to any hold period under applicable Canadian securities laws.

The gross proceeds of the LIFE Offering will be used for “Canadian exploration expenditures,” which are “flow-through critical mineral mining expenditures” as defined under the Tax Act, on the Company’s flagship Star Project.

In connection with the LIFE Offering, an offering document (the " Offering Document ") is available for review under the Company's issuer profile on SEDAR+ at www.sedarplus.ca and on the Company's website at www.starcopper.com . Potential investors should consult this Offering Document before making any investment decision.

The Company may be required to pay finder's fees in connection with the LIFE Offering in accordance with applicable securities laws and the policies of the CSE. Completion of the LIFE Offering is subject to customary conditions and the receipt of all necessary approvals.

This press release does not constitute an offer to sell or the solicitation of an offer to sell any securities in the United States. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended (the " US Securities Act "), or any state securities laws and may not be offered or sold in the United States or to US persons absent registration under the US Securities Act and applicable state securities laws or an exemption from such registration requirements is available.

Source reference

1 Borovic, I. (1990). Geophysical Survey of the Driftwood Property . ARIS Report 19978.

2 Craigmont Mines Ltd. (1974). Diamond Drilling Report – Driftwood River Area . ARIS Report 4967.

3 Houle, J. (2003). Kit Resources Ltd. Drilling & Geochemical Report on the Copperline Property . ARIS report 27276.

4 Rodway, N. (2023). Copperline Property Technical Assessment Report . Prepared for Zinsu Capital Corp.

5 Weicker, R. (2001). Geological and Prospecting Report on the Copperline Property . ARIS report 26667.

6 British Columbia Minfile Detail Report (2024) (Minfile umber 093M 117) or NMIN 09M15Cu1.

For the Board of Directors

~Darryl Jones~

Darryl Jones

CEO, President & Director

Star Copper Corp.

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

Star Copper Corp. is an exploration and development company focused on developing prospective copper projects in mining-friendly jurisdictions. The company aims to advance its Star Project in British Columbia . where significant exploration work, including historic drilling, has confirmed mineralization open at depth and in all directions. Star Copper's strategic plans include geological mapping and geophysical surveys to refine existing target areas, diamond core drilling programs to test high-priority zones, environmental baseline studies and permitting preparatory work, along with data analysis and resource modeling to support a future NI 43-101 compliant resource estimate. The Company also plans to develop its project To advance Indata through follow-up drilling to expand previous high-grade copper and gold intercepts, trenching and surface sampling to define mineralized zones, and infrastructure improvements for site accessibility and operations. With its commitment to sustainable development and value creation, Star Copper aims to position itself to support rising industrial demand and meet growing global electrification needs.

For further information, please visit www.starcopper.com . For free news alerts, please subscribe to our mailing list at https://starcopper.com/news/news-alerts/ or follow us on X (formerly Twitter) , Facebook , or LinkedIn . Further information on the project, including historical drilling, can be found on the Company's profile at www.sedarplus.ca and/or in the Company's technical report dated February 26, 2025.

Investor Relations Star Copper Corp.

Email: [email protected]

Web: https://starcopper.com/

Cautionary note regarding forward-looking statements

This press 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," "anticipates," "expects," and similar expressions. All statements in this press release that are not historical facts are forward-looking statements that involve risks and uncertainties. Forward-looking statements in this news release include, but are not limited to, statements with respect to the Company's exploration and development plans with respect to its projects, statements with respect to the LIFE Offering, including, but not limited to, statements with respect to the completion or expected closing date of the LIFE Offering, the payment of finder's fees, the receipt of regulatory approvals and the use of gross proceeds, and statements with respect to the Acquisition, including the completion or anticipated benefits thereof, the receipt of acceptance and approval from the TSXV and the CSE, the prospects of the mineral claims comprising the Copperline Property, which are not at an advanced stage of development, the anticipated business and operating activities of the Company and the Company's plans with respect to the exploration of the Company's flagship project, the Star Project, the Indata Project or the Copperline Property. 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, among others, the inherent unpredictability of resource exploration, market conditions, and the risks detailed from time to time in the Company's filings with securities regulatory authorities. The reader is cautioned that the assumptions used in the preparation of any forward-looking information may prove to be incorrect. Events or circumstances could 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 Company's control. The reader is cautioned not to place undue reliance on forward-looking information. Such information, although considered reasonable by the Company's management at the time made, may prove to be incorrect, and actual results could differ materially from those anticipated. The forward-looking statements contained in this press release are expressly qualified by this cautionary statement. The forward-looking statements contained in this press release are made as of the date of this press release, and the Company will not update or publicly revise any forward-looking statements contained therein except to the extent required by applicable law.

The original language (usually English) in which the original text is published is the official, authorized, and legally binding version. This translation is provided for ease of understanding. The German version may be shortened or summarized. No responsibility or liability is assumed for the content, correctness, appropriateness, or accuracy of this translation. From the translator's perspective, this release does not constitute a recommendation to buy or sell! Please see the original English release at www.sedarplus.ca , www.sec.gov , and www.asx.com.au/@irw-press.com