Mr. Dustin Henderson reports

BLACK MAMMOTH METALS CLOSES $24M PRIVATE PLACEMENT

Black Mammoth Metals Corp. has closed a private placement for gross proceeds of $24-million, consisting of eight million units at a price of $3 per unit, initiated on June 15, 2026, by price reservation. Each unit consists of one common share of the company and one-half non-transferable common share purchase warrant, with each full warrant exercisable into one common share of the company for a period of two years from the issue date at an exercise price of $4. The units will be subject to a four-month hold period from the date of closing. The company intends on using the proceeds of the offering for drilling and work-up activities for its core and non-core exploration properties, potential acquisitions, and general working capital.

There are no commissions or insider participation in connection with the offering.

About Black Mammoth Metals Corp.

Since January, 2024, Black Mammoth Metals has acquired a 100-per-cent interest in 28 core properties:

• Mineral Mountain, Washington county, Utah;
• Antelope gold property, White Pine county, Nevada;
• 305 property, Lander county, Nevada;
• Cupz gold property, Esmeralda county, Nevada;
• West Reveille silver property, Nye county, Nevada;
• Tom's Pediment gold-silver property, Lander county, Nevada;
• Mustang gold-silver property, Nye county, Nevada;
• Ramsey silver property, La Paz county, Arizona;
• Gallinas rare earth property, Lincoln county, New Mexico;
• Amador silver property, Lander county, Nevada;
• Big Bear copper property, Gila county, Arizona;
• Zulu gold property, Gila county, Arizona;
• Northern Star property, La Paz county, Arizona;
• Coal Canyon gold property, Pershing county, Nevada;
• Island Mountain gold district (including Coleman Canyon, St. Elmo and Diamond Jim (silver, lead, zinc and antimony)), Elko county, Nevada;
• Clover high-grade gold property, Elko county, Nevada;
• Leadore silver-lead-rare-eart- element property, Lemhi county, Idaho;
• East Reveille gold property, Nye county, Nevada;
• America mine gold property, San Bernardino, California;
• Quito gold property, Lander county, Nevada;
• South Ravenswood gold district (including the Raven and Happy Cat properties), Lander county, Nevada (Happy Cat was purchased prior to January, 2024);
• Callaghan gold district (including North Callaghan, Charlie, Cottonwood and Rast properties), Lander county, Nevada.

Black Mammoth also has a 100-per-cent interest in the Blanco Creek gold property in the Elk Creek mining district, central Idaho, which hosts three historic underground mines along 3,550 metres (11,644 feet) of strike on the northeast trending regional Blanco shear zone.

Qualified person

Mark J. Abrams, CPG No. 11451, a qualified person as defined under NI 43-101, a director of Black Mammoth, has reviewed and approved the technical content in this news release. Mr. Abrams has reviewed the historical estimate referenced herein but has not verified such estimate as a current mineral resource.

We seek Safe Harbor.