Mr. John Mirko reports

ROKMASTER DRILLS PORPHYRY-STYLE MOLYBDENITE MINERALIZATION AT THE WILSON TARGET AT HANSON

Rokmaster Resources Corp. has released results from diamond drilling on the Hanson property completed in April, 2026.

The Hanson 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.

A small inaugural drill program, totalling 393.0 metres in two drill holes, tested the Wilson target within the Hanson property. This program represents essentially the first drill test of a strong and broad soil molybdenum anomaly and coincident IP (induced polarization) anomaly initially detected by Endako Mines in 1973. Endako Mines completed two shallow drill holes in 1978 after a five-year hiatus in exploration. Drill holes H9 and H10 were completed to depths of only 62.5 m and 37.8 m, respectively, and were directed away from the central high-resistivity anomaly.

Fieldwork completed in 2025 found that the Stern Creek granodiorite underlying the Wilson zone hosts potassic secondary biotite alteration related to narrow millimetre-scale vein-hosted molybdenite mineralization on surface. An outcrop was found near the centre of the Wilson zone geochemical and geophysical anomaly, with brecciated clasts of Stern Creek granodiorite and porphyritic quartz monzonite, the primary target for this drill program.

Drill hole H26-02 intersected intrusive breccia with metre-scale intervals of foliated granodiorite and non-foliated porphyritic quartz monzonite from top of the hole until a larger stock of quartz monzonite was encountered between 30.6 and 44.0 metres. Below the lower contact of that unit, the remainder of the drill hole consisted of foliated granodiorite with varying degrees of chlorite alteration, persistent potassic alteration and molybdenite mineralization hosted in quartz B-veins down to the end of the drill hole.

Notable molybdenite mineralization in dense centimetre-scale quartz veins was intersected in drill hole H26-02 with an assay of 0.518 per cent Mo (0.864 per cent MoS2 (molybdenum disulphide)) over 1.20 metres (59.0 to 60.2 metres). The surrounding interval near the lower contact of the quartz monzonite also hosted centimetre-scale quartz-molybdenite veins and elevated assays with a weighted average of 0.051 per cent Mo (0.085 per cent MoS2) over 18.2 metres (42.0 to 60.2 metres).

For comparison, the average grade in the 2025 mineral resource estimate on the currently inactive Endako mine (Canada's largest Mo mine), located 23 kilometres south of the Hanson property, is 0.072 per cent MoS2 for 335.6 million tonnes in the measured and indicated category. This estimate used a cut-off grade of 0.040 per cent MoS2 and a price of $22.50 (U.S.) per pound Mo. Rokmaster also intersected a larger interval of 0.023 per cent Mo (0.038 per cent MoS2) over 71.0 metres (42.0 to 113.0 metres) cored in drill hole H26-02. This interval is close to the projected restart cut-off grade used in the Endako mine PEA (preliminary economic assessment).

Drill hole H26-01 was collared approximately 900 metres west of drill hole H26-02 and intersected Hanson-phase porphyritic tonalite hosting approximately 5 per cent disseminated pyrite mineralization. This drill hole tested a circular magnetic low feature, elevated gold in surface samples and the less exposed western portion of high-chargeability anomaly. Drill hole H26-01 returned elevated copper results of 500 to 1,600 parts per million copper over metre-scale intervals throughout the hole, further confirming the pyrite halo around the core of the Wilson zone.

There is potential for porphyry-style mineralization on the Hanson property, at the Wilson zone and at the Cyr zone 2.5 kilometres to the north. The Cyr zone has similar geology with strongly sericite-altered and pyritic Stern Creek granodiorite hosting elevated gold, silver, copper and zinc as indicated in historical sampling and drilling, which may indicate a less eroded porphyry system. The Buckley zone, approximately 4.0 kilometres west of the Wilson zone, is defined by a large, strong molybdenum anomaly in soil samples taken over the Hanson-phase tonalite.

A new 1,534-hectare mineral claim called the Chaplin property was recently approved eight kilometres south of the Hanson property. The Chaplin property is bisected by the mainline Trout Road and characterized by moderate overburden cover over mapped Stern Creek granodiorite. A 1969 induced polarization survey identified a strong IP anomaly that is coincident with a magnetic low that remains undrilled.

John Mirko, president and chief executive officer, commented: "This first-pass, low-cost drill program at the Wilson zone has added good value to the Hanson property by intersecting notable porphyry-style molybdenite mineralization. The high-grade interval of 0.518 per cent Mo over 1.20 m in drill hole H26-02 demonstrates that the system's ability to locally concentrate mineralization in higher-grade vein corridors within a broader envelope of lower-grade mineralization is similar to what has been described at the Endako mine. The location of the 18.2-metre interval returning 0.051 per cent Mo, which exceeds the average grade at the Endako mine, also supports further exploration potential in the geological context of the Wilson zone. With extensive road access and nearby infrastructure, we can continue advancing the Wilson zone and the other underexplored Hanson property targets efficiently. We thank all our contractors, including Hy-Tech Drilling, for safely and efficiently completing this small drill program. Intersecting this porphyry-style mineralization in the Wilson zone is an excellent start and we look forward to additional drilling on prospective porphyry targets on the Nechako project later this year."

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 Eric Titley, PGeo, who is independent of Rokmaster and who acts as Rokmaster's qualified person.

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