Rockhaven Reports Multiple High-Grade Vein Exposures at its Klaza Gold-Silver Project, YukonVANCOUVER, BC / ACCESS Newswire / November 17, 2025 / Rockhaven Resources Ltd. (TSX-V:RK) ("Rockhaven") is pleased to announce assay results from the 2025 exploration program at its 100% owned and road accessible Klaza property, located in the Dawson Range Gold Belt of southern Yukon.During the summer of 2025, Rockhaven conducted an excavator trenching program along the surface trace of the Western BRX Zone, one of twelve high-grade gold-silver zones discovered to date at Klaza. The purpose of this program was to: (1) determine the width, grade and character of near-surface mineralization in the zone; (2) better define structural features and controls related to the mineralization; and (3) establish the nature and depth of the oxide to sulphide transition (visually and analytically) for use in planned PFS-level metallurgical studies. To complete this evaluation, the organic overburden layer was first removed and much of the zone was stripped to bedrock. A total of 34 vein exposures were then trenched and sampled across the trace of the 460 m long zone. The information collected from this work is fundamental to the future Klaza economic studies and will assist Rockhaven's planning for a potential bulk sampling program scheduled for summer 2026.Highlight assays from the 2025 Program include:143 g/t gold and 1,080 g/t silver over 1.79 m (TR-25-118)100 g/t gold and 773 g/t silver over 1.52 m (TR-25-121)67 g/t gold and 758 g/t silver over 2.05 m (TR-25-105)102 g/t gold and 1,535 g/t silver over 1.20 m (TR-25-120)99 g/t gold and 763 g/t silver over 1.22 m (TR-25-108)204 g/t gold and 893 g/t silver over 0.50 m (TR-25-100)80.5 g/t gold and 580 g/t silver over 1.22 m (TR-25-123)64.2 g/t gold and 577 g/t silver over 1.41 m (TR-25-124)89.1 g/t gold and 1,445 g/t silver over 0.90 m (TR-25-132)69 g/t gold and 581 g/t silver over 1.25 m (TR-25-117)Statement by Matt Turner, President and CEO of Rockhaven:"The 2025 program was successful in demonstrating continuous, high-grade gold and silver mineralization in the near surface portion of the Western BRX Zone, while also identifying important structural and mineralogical features. Based on these results, Rockhaven has commenced planning and permitting for a bulk sample in 2026, including engagement with Little Salmon Carmacks First Nations and their Development Corporation. Rockhaven has also entered the YESAB environmental assessment process as well as begun discussions with potential direct shipping customers/traders and smelters. Given the grades of the Western BRX Zone, we see potential for a fast payback, low impact scenario that should provide invaluable information to support potential larger scale development of the Klaza project."The table below summarizes the significant results from the 2025 trenching program with trenches labelled sequentially from north to south. A map showing the locations of trenches and select photos of the veins can be viewed on the Rockhaven website at www.rockhavenresources.com.Klaza Project - Western BRX Zone - Significant Results from this ReleaseTrench IDSampled Interval (m)+Au (g/t)Ag (g/t)TR-25-1000.50204.0893TR-25-1011.2246.2505and1.2231.8148TR-25-1021.7216.222TR-25-1031.7724.224TR-25-1040.9848.0546TR-25-1052.0567.1758TR-25-1062.5025.4315TR-25-1070.7827.6554TR-25-1081.2299.0763TR-25-1091.4527.3366TR-25-1100.3031.8268TR-25-1111.2923.4148TR-25-1121.6820.5556TR-25-1131.109.1118TR-25-1140.6084.0179TR-25-1151.2053.3604TR-25-1161.0410.4230TR-25-1171.2569.0581TR-25-1181.79143.01,080TR-25-1191.0430.5877TR-25-1201.20102.01,535TR-25-1211.52100.0773TR-25-1220.6051.21,850and2.4531.2248TR-25-1231.2280.5580TR-25-1241.4164.2577TR-25-1251.3435.4218TR-25-1261.3317.0326TR-25-1270.550.68922and0.802.7213TR-25-1281.0012.461TR-25-1291.0028.8407TR-25-1300.5024.3247TR-25-1310.5031.6141TR-25-1320.9089.11,445TR-25-1331.3510.0206+Represents the sampled length. True widths are estimated to be 80-95% of the interval as the majority of vein intersects had contacts that were at or near perpendicular to trench axis. Assay results are not capped.The Western BRX ZoneDuring the 2025 work program, a total of 188 rock samples were collected. The samples were taken from excavator bucket test pits (to simulate bulk sampling) or from the rib of excavator trenches, both of which were oriented perpendicular to the strike of the zone. Float samples were collected from the floor of the stripped area, between test pits and trenches, to help demonstrate continuity. A total of 34 new cuts were made across the Western BRX Zone, spaced between 5 and 20 m apart along the strike length of the Western BRX Zone, with the exception of a section in the southern part of the zone which was exposed through three trenches spaced 40 m apart.Near surface mineralization in the vein zone is altered to strong limonite and hematite surrounding highly fractured, pitted and vuggy quartz. The mineralization h