Mr. Trumbull Fisher reports

ANTEROS RETURNS HIGH-GRADE LEAD-ZINC-SILVER IN SURFACE SAMPLES FROM THE MMZ AT ITS HAVENS STEADY VMS propERTY, NEWFOUNDLAND

Anteros Metals Inc. has released assay results from six grab samples collected at the main mineralized zone (MMZ) of its wholly owned, road-accessible Havens Steady VMS (volcanogenic massive sulphide) property in central Newfoundland. These samples confirm high-grade lead-zinc-silver mineralization at surface and show associated gold and copper enrichment consistent with a polymetallic volcanogenic massive sulphide system.

The grab samples were collected during a recent field visit, focused on confirming the tenor and extent of exposed mineralization within the MMZ. All samples were collected from bedrock outcroppings of gossanous surface material. Surface grab sample highlights are given in Table 1.

"These samples support the surface expression of MMZ, which we model as a laterally extensive high-grade zone," stated Trumbull Fisher, chief executive officer of Anteros Metals. "The enrichment in base and precious metals positions the MMZ as a high-priority target for trenching and drill targeting later this season."

Geological context

The MMZ lies within a strongly prospective segment of the Exploits Subzone, an established host to VMS-style deposits in central Newfoundland. The property area is characterized by felsic to intermediate volcaniclastics that are variably silicified and gossanous at surface. Historical drilling within the property has documented high-grade VMS-style mineralization, and recent data compilation has revealed copper and gold enriched zones within the MMZ (see May 1, 2025, news release).

These results build on recent prospecting at Havens Steady, where sampling revealed angular float boulders with multi per cent copper grades along-strike from the MMZ (see June 16, 2025, news release), reinforcing the zones potential for further exploration.

Next steps

The company plans to commence a targeted trenching program at the MMZ in the coming weeks, with the aim of exposing and mapping the mineralized zone in detail. Results from trenching will guide a potential phase I drill program planned for fall 2025, designed to test the down-dip and along-strike extent of mineralization.

QA/QC (quality assurance/quality control) and analytical methods

Samples were collected by Anteros personnel and submitted to Eastern Analytical Ltd. (EAL), an ISO/IEC 17025-accredited laboratory located in Springdale, Nfld. EAL regularly inserts certified blanks, reference standards and sample duplicates into sample sequences to maintain accuracy and precision of results. Multielement geochemistry was estimated using a 200-milligram subsample, dissolved in a four-acid solution and analyzed with inductively coupled plasma optical emission spectroscopy (ICP-OES). Overlimit assays, including lead, zinc and silver, were completed using multiacid digestion and atomic absorption spectroscopy (AAS). Gold was estimated through fire assay and AAS of a 30 g subsample.

About the property

Located approximately 40 kilometres southeast of Buchans, the Havens Steady property hosts a laterally extensive polymetallic volcanogenic massive sulphide (VMS) system within the Storm Brook formation of the Red Cross Group in the Exploits Subzone of the Dunnage zone, a prolific metallogenic belt in central Newfoundland. The property benefits from existing road infrastructure and proximity to hydroelectric power. The region hosts active exploration and world class VMS deposits including the past-producing Duck Pond mine. The company cautions that mineralization hosted on adjacent and/or nearby properties is not necessarily indicative of mineralization on the property.

Since acquiring the property in January, 2024, Anteros has compiled an extensive historical data set that includes airborne electromagnetic surveys, geochemical surveys and over 15,000 metres of historical drilling. Documented mineralization includes sphalerite, galena, chalcopyrite and bornite in high-grade polymetallic zones. The known system has a strike length of over a kilometre and remains open at depth.

Qualified person

The technical content of this news release has been reviewed and approved by Jesse R. Halle, PGeo, an independent qualified person as defined by National Instrument 43-101 -- Standards of Disclosure for Mineral Projects.

About Anteros Metals Inc.

Anteros is a multimineral junior mining company applying data science and geological expertise to identify and advance critical mineral opportunities in Newfoundland and Labrador. The company is currently focused on advancing four key projects across diverse commodities and development horizons. Immediate plans for their flagship Knob Lake property include bringing the historical Fe-Mn (iron-manganese) mineral resource estimate into current status as well as commencing baseline environmental and feasibility studies.

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