Terra Balcanica Completes 1200 m of Phase III Drilling at Silver-Antimony Targets in Bosnia and Herzegovina

Vancouver, British Columbia, Dec. 12, 2025 (GLOBE NEWSWIRE) -- Terra Balcanica Resources Corp. (“Terra” or the “Company”) (CSE:TERA; FRA:UB1; OTC:TEBAF) is pleased to announce the completion of the 1^st stage of its 2,100 m Phase III drilling program at the Brezani and Chumavichi targets within its polymetallic Viogor-Zanik project in Bosnia and Herzegovina.

Highlights

• Approximately 1,200 m of oriented, diamond core drilling was conducted at the Brezani and Chumavichi targets within Terra’s 168 km² project in eastern Bosnia;

• Drillholes BRE25001 and BRE25001A, positioned 72 m NE of the discovery hole BREDD002 which returned 19.6 m at 436 g/t AgEq (see company news release dated 20^th January 2025), have both intercepted a ca. 50-60 m interval of retrograde altered skarn, the host of the previously reported 0.61g/t AuEq over 88m (see company news release dated 24^th January 2023), as well as several structural zones hosting intermediate sulphidation epithermal mineralization (Figure 1);

• Drillholes CMV25001 through 25004 have intercepted multiple zones of shallow, massive sulphide and quartz-sulphide, vein-hosted mineralization in the hanging and footwall of the SW dipping Chumavichi structure, all above 80 m depth;

• Epithermal mineralization encountered at both targets is polymetallic (Ag-Sb-Zn-Pb-Au) as confirmed by sulphide observations and pXRF. Key mineralized intervals have been sequentially sampled and are pending assay completion;

• The complete lithogeochemical assays will be reported after the laboratory data is received in its entirety.

Terra Balcanica CEO, Dr. Aleksandar Mišković, comments: “We are pleased to have completed over a half of the planned meterage despite numerous setback and technical challenges which made the 2025 drilling campaign longer than anticipated. Moreover, we are pleased with the intercepted structures and mineralogies observed while logging the core both at Brezani and Chumavichi. The Terra exploration hypothesis about the extension of the base-metal dominated, epithermal mineralization above the NE shallowing conductor at Brezani which was initially interpreted to have served as a fault-hosted fluid conduit continues to be refined in the light of new 3D data. We will proceed towards testing the main Ag-Sb-Zn-As-Bi soil anomaly with additional drillholes. Simultaneously, we shall continue to push ahead with meaningful step outs at the Chumavichi system towards NW. Our drilling team is set to resume the Phase III operations in January of 2026 immediately after the laboratory assays are released to the public.”