Mr. Peter Cashin reports

AURIGINAL TARGETS OCTOBER UPDATE TO ROGER NI 43-101 MINERAL RESOURCE ESTIMATE

Auriginal Mining Corp. has collected encouraging drill data from Roger diamond drilling to justify updating the historical National Instrument 43-101 preliminary mineral resource estimate (MRE) of zone for delivery by October.

Highlights:

• Auriginal has engaged PLR Resources Inc. to update the 2018 mineral resource estimate (MRE) for the Roger project.
• The significant increase in copper and gold prices since 2018 supports reassessing the historical MRE using a lower cut-off grade, with the potential to capture additional mineralized material.
• Phase 1 drilling also materially expanded the historical mineralized footprint, extending strike by approximately 700 metres to the southwest and 400 metres to the northeast, while also extending mineralization more than 100 metres at depth.
• Assays from phase 1 are expected shortly, with phase 2's drilling now under way.

"Drilling to date has supported our view of a significantly expanded porphyry Cu-Au resource at Roger below and along strike from historical drilling on the property and has confirmed the presence of an overlying gold-rich VMS horizon," said Peter Cashin, Auriginal Mining's chief executive officer. "Our work continues to show porphyry-style mineralization characteristic of the historical Cu-Au resource in all holes, which remains open below and to the southwest and northeast of the previous limits of Roger zone."

October mineral resource update

PLR has been retained to update the 2018 Roger MRE using updated economic assumptions reflecting the significant increase in copper, gold and silver prices since the previous estimate. The revised study will evaluate the impact of using an updated cut-off grade on the tonnage, grade, geometry and continuity of the Roger mineralized system.

A lower cut-off grade may allow additional mineralized material currently outside the existing resource envelope to be incorporated into the revised resource. It could also result in a larger and more continuous mineralized envelope, potentially improving the geometry of a conceptual open-pit mining scenario. The updated MRE is targeted for completion in October, 2026. Separately, PLR has also been retained to support a subsequent resource estimate incorporating the additional mineralization being defined through Auriginal's continuing phase 1 and phase 2 drill programs.

Phase 1 drilling expands Roger mineralized footprint

Auriginal's phase 1 drilling program was designed to test extensions of the historical Roger copper-gold mineralization and further evaluate the company's geological interpretation of the broader mineralized system.

Drilling to date has extended the known porphyry-style mineralization approximately 700 metres southwest and 400 metres northeast of the historical drilling limits, while also extending mineralization by more than 100 metres at depth. The Roger mineralized system remains open along strike and at depth.

Assays from phase 1 drill holes AUR-26-06 through AUR-26-10 are pending and will be reported as they are received and interpreted.

The Roger deposit has historically been interpreted as a porphyry-style copper-gold system. Auriginal's recent geological work-including relogging, resampling, geochemistry and age dating -- has led the company to interpret the historical copper-gold deposit as being situated beneath an overlying gold-rich volcanogenic-massive-sulphide-style horizon.

A continuous Cu-Zn-Au-Ag (copper-zinc-gold-silver) sulphide marker horizon has been traced for at least 1.5 kilometres within altered felsic to intermediate volcanic rocks characteristic of VMS environments. Geological and geochemical characteristics identified to date show similarities to other VMS systems in the Abitibi and support continued exploration of this separate target above and south of the Roger copper-gold zone.

$2.0-million phase 2 definition drill program under way

Following the expansion demonstrated during phase 1, Auriginal has allocated an additional $2.0-million to phase 2 definition drilling at Roger. The program is designed to provide sufficient drill density across the newly identified extensions of the Roger mineralized system to support their potential inclusion in a future MRE. Based on PLR's initial review, drilling at approximately 125-metre spacing has been recommended across portions of the newly defined mineralized extensions to support evaluation for potential classification within an inferred mineral resource.

Phase 2 drilling will focus on:

• Defining the southwest, northeast and depth extensions of the Roger copper-gold system;
• Increasing drill density across newly identified mineralized areas;
• Continuing to test the broader porphyry system beyond the limits of the historical resource;
• Advancing exploration of the interpreted VMS horizon and vectoring toward potentially higher-grade portions of that system.

The company expects the broader resource work incorporating the expanded drilling footprint to follow the October update, with additional resource work targeted for later in 2026. All currently planned phase 2 drilling and associated technical work is fully financed.

Results of annual general and special meeting

Auriginal is also pleased to announce that shareholders approved all matters presented at the company's annual general and special meeting of shareholders held on Aug. 6, 2026.

"We appreciate the continued support of our shareholders," said Mr. Cashin. "With a fully funded exploration program under way and a clear path toward updating and expanding the Roger resource, we are focused on demonstrating the scale and potential of the project."

About Auriginal Mining Corp.

Auriginal is a Quebec-focused copper and gold company with one of the province's largest and most diversified exploration portfolios. Its 100-per-cent-owned flagship Roger project, located in the Chibougamau district, hosts a known gold-copper deposit with strong potential to host volcanic-hosted polymetallic massive sulphide deposits. With a diversified pipeline of greenfield projects across Quebec's best-known mining regions and backed by the Ore Group's proven exploration and capital markets team Auriginal has a clear focus on discovery and growth for copper, zinc and gold. The company is well positioned to immediately execute an aggressive exploration and acquisition strategy and attract broader market attention.

Qualified person statement

The technical information contained in this news release has been reviewed and approved by Andre Liboiron, Geo (617), an independent consultant to Auriginal Mining Corp. and a qualified person as defined in National Instrument 43-101.

We seek Safe Harbor.