Mr. John Mirko reports

ROKMASTER COMMENCES MAIDEN DRILL PROGRAM ON ITS MYSTERY PROPERTY

Rokmaster Resources Corp. has provided an update on exploration activities on the Mystery property.

The first-ever Mystery drill hole is being collared today on the Mystery property. Previous operators such as Kennco, Canamax, Noranda, Quartz Mountain Resources and Copper Mountain Mining had advanced the property with positive geochemical and geophysical work since 1969. Kootenay Resources and Rokmaster Resources have steadily developed robust porphyry drill targets with detailed fieldwork annually since 2022, discovering several significant outcrop occurrences of porphyry-style copper and molybdenum mineralization with related alteration. Recent work also expanded and refined historical geochemical and geophysical anomalies throughout the large 16,291-hectare (162.9-square-kilometre) Mystery property.

In June, 2026, SJ Geophysics completed an induced polarization survey over several of the most prospective porphyry copper-(molybdenum-plus-or-minus-gold) targets on the Mystery property.

The southern IP survey profile, Line 1000, was completed over the B2 and B3 zones. This area features limited outcrop exposures of strongly potassic-altered andesite hosting a dense stockwork of pyrite-chalcopyrite-biotite-magnetite veinlets, which have returned elevated copper, molybdenum and gold in rock sample assays. The IP response shows a strong high-chargeability anomaly cored by a strong, high-resistivity anomaly below and southeast of the B2 zone. Planned drill hole P26-A is designed to test the central high-resistivity anomaly to a depth of approximately 500 metres while penetrating through the halo of high chargeability.

North of the Ford anomaly, IP Line 3000 tested an area of stockwork quartz veining in sericite- and potassic-altered porphyritic monzonite. This area was discovered last year and rhenium-osmium age dating on the molybdenite mineralization confirmed that it belongs to the productive late Cretaceous Bulkley intrusive suite, which is related to porphyry systems in the region such as the Huckleberry, Ox, Seel and Poplar deposits. IP Line 3000 shows a west-dipping coincident high-chargeability and high-resistivity anomaly that comes to surface near where the molybdenite mineralization outcrops. The planned drill hole P26-B is designed to test this IP anomaly where surface mineralization and alteration indicates a porphyry system near the contact with the larger monzonite intrusion.

John Mirko, president and chief executive officer, commented: "Having the drill arrive on the Mystery property for the first time ever is an exciting moment. We are very encouraged by these targets, which have great surface expressions and positive indications for a large porphyry system at depth in the IP data. Further updates will be released in due course."

Nechako project

The Mystery property is a part of the company's Nechako project, which totals 28,238 hectares (282 square kilometres) across four properties located in west-central British Columbia. The Nechako project features multiple exploration targets for significant porphyry copper-(molybdenum-plus-or-minus-gold) mineralization and high-grade gold-silver vein systems in the southern portion of the productive Stikine terrane. Rokmaster has nurtured the Nechako project for several years, efficiently vectoring toward robust drill targets on the properties, three of which hold active exploration drill permits.

The technical information in this news release has been prepared in accordance with Canadian regulatory requirements as set out in National Instrument 43-101 and reviewed and approved by Linda Caron, PEng, who is independent of Rokmaster.

We seek Safe Harbor.