Minaurum expands Quintera Vein Zone with 26 m of 369 g/t AgEq; Europa Sur hits 3.4 m of 589 g/t AgEq

Vancouver, British Columbia--(Newsfile Corp. - August 25, 2026) - Minaurum Silver Inc. (TSXV: MGG) (OTCQX: MMRGF) (" Minaurum " or the " Company ") is pleased to report continued high-grade drill results from the Europa, Quintera, and San Jose Vein Zones , as part of its ongoing Phase II, 50,000-metre resource-expansion drilling program at the Alamos Silver Project ("Alamos") in Sonora, Mexico.

Highlights include:

Quintera Vein Zone

26.30 m of 369 g/t silver equivalent ("AgEq") ( 306 g/t Ag , 0.03 g/t Au, 0.37% Cu, 0.73% Pb, 0.61% Zn) including 0.30 m of 2,418 g/t AgEq ( 2,220 g/t Ag , 0.10 g/t Au, 1.01% Cu, 2.22% Pb, 2.46% Zn) (Hole AL26-230)

Europa Sur Vein Zone

3.40 m of 589 g/t AgEq ( 475 g/t Ag , 0.17 g/t Au, 0.53% Cu, 0.79% Pb , 1.59% Zn) (Hole AL26-224)

"The latest drill results continue to highlight the exceptional potential of the Alamos Silver Project. At Quintera, we're intersecting wide zones of high-grade mineralization in the footwall of the historic mine workings, strengthening our confidence in future resource growth," stated Darrell Rader, President and CEO of Minaurum Silver. "Meanwhile, Europa Sur continues to return impressive high-grade silver intercepts across the main vein as well as the associated hanging wall structures. We look forward to releasing additional results as drilling progresses."

Figure 1. Plan view showing locations of Travesia, Quintera, Promontorio , and Europa vein zones . Click to enlarge. To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/3455/310948_55852158647a9b76_003full.jpg

Quintera - Travesia Vein Zones

AL26-230 intersected a significant width of high-grade silver, cutting 26.30 m of 369 g/t AgEq ( 306 g/t Ag , 0.03 g/t Au, 0.37% Cu, 0.73% Pb, 0.61% Zn), in the Quintera vein outside of the old mine workings and about 75 m north of the