Mr. Simon Ridgway reports

RADIUS GOLD PROVIDES UPDATES ON JONCO AND TIERRA ROJA PROPERTIES

Radius Gold Inc. has provided an update on site visits by Radius president Dr. Luke Longridge to the Jonco and Tierra Roja projects, Peru.

Jonco site visit

In anticipation of the execution of the formal option agreement for 100 per cent of the Jonco silver project (announced July 15, 2026), Dr. Longridge visited the Jonco site on July 3 and July 4, and was accompanied by Radius chairman and chief executive officer Simon Ridgway, several members of Radius's Peruvian team, and Frederick Felder, representative of Minera Joncijirca S.A.C.

Mr. Felder is an experienced geologist and former executive vice-president of Greystar Resources and was instrumental in the advancement and resource expansion of the world-class Angostura Au-Ag (gold-silver) deposit in Colombia. Mr. Felder has been involved in the Jonco project since it was originally staked in 1996 and has accumulated a wealth of knowledge on the geology of the property. The site visit, together with a legacy data set that includes geophysics, geochemistry, petrographic and fluid inclusion studies, and the database for 11 historic holes, has allowed for the transfer of this valuable geological knowledge.

The Jonco silver project hosts a bulk-tonnage polymetallic Ag-Au-Pb-Zn (silver-gold-lead-zinc) epithermal system associated with dacite flow domes and hydrothermal breccias, and diatreme structures within the Miocene Volcanic Belt of northern Peru. Mr. Felder believes that Jonco represents a telescoped polymetallic epithermal system that has been tectonically juxtaposed by several episodes of deformation. Further understanding and delineating of the disseminated polymetallic epithermal mineralization will be the initial focus for the Radius team, while also evaluating the multiple additional targets already identified by Mr. Felder, and based on historical work. Radius is currently reviewing all historical data and will be conducting resampling of historic drill core and trenches. During the site visit, the Radius team visited historic trenches and drill collars, and discussed the planned work program for the Jonco project, which will be announced in due course.

Furthermore, Radius's senior leadership met with community representatives at the nearby Cajamarquilla community, who hold surface rights over much of the area covered by the Jonco claims. Radius is working toward obtaining agreements with the Cajamarquilla community, which are required for permitting of drilling and other exploration activities.

Dr. Luke Longridge, president of Radius Gold, commented: "It was great to meet with the Cajamarquilla community representatives during the site visit. We look forward to continuing to work with them to secure the necessary surface access agreements and permitting for future exploration activities at Jonco. I am even more excited about the project now that I have seen it in person. Strong alteration associated with polymetallic mineralization, together with favourable topographic relief, confirms the potential for a bulk-tonnage target".

Tierra Roja site visit

Dr. Luke Longridge visited the Tierra Roja property on July 7, 2026, accompanied by Alejandro Ly (vice-president, exploration) and Felix Cerron, an experienced geologist who conducted detailed geological mapping and assessment of the property prior to acquisition by Radius. Several observations were noted by Dr. Longridge during the visit and are presented in the figures below. These include:

• Widespread copper-oxide minerals beneath one to three metres thick cover of caliche. Cu-oxides are most visible in quebradas (ravines/valleys) but excavations beneath the caliche away from these valleys reveal widespread Cu-oxide minerals.
• The presence of porphyry dikes containing disseminated copper oxides.
• Extensive silicification and sericitic and potassic alteration of the Jurassic andesite volcanics. These andesites represent the older host (country) rocks into which the mineralizing system has been emplaced.
• Widespread disseminated Cu-oxide mineralization within the host andesite volcanics.
• Presence of copper oxides at distances of over one kilometre to the east from the 600 m by 800 m Core zone. Re-examination of assay data from rock chip samples collected prior to the acquisition of the project highlight this widespread copper distribution across an area greater than four km.

Radius continues to engage with Peruvian government entities regarding drilling authorization at Tierra Roja. A surface work program is being prepared for the Tierra Roja property, which will allow for more detailed characterization of the mineralizing system and its extents.

"There is no substitute for getting into the field and viewing the rocks firsthand," commented Dr. Luke Longridge, president of Radius Gold. "The geological features at Tierra Roja, notably the presence of porphyry dikes, widespread silicification and potassic alteration, and the abundance of secondary copper oxides below the caliche cover, are all indications of a mineralized porphyry system, and the distribution of copper oxides over such a large area is highly encouraging. I look forward to working on both projects to realize their potential."

Qualified person

Luke Longridge, PhD, PGeo, is the president of Radius and is Radius's qualified person as defined by National Instrument 43-101 -- Standards of Disclosure for Mineral Projects. Dr. Longridge has reviewed and approved the technical information contained in this news release.

About Radius Gold Inc.

Radius Gold is an exploration company focused on the discovery and advancement of high-quality projects in the Americas. The company's strategy is to identify, acquire and advance exploration opportunities with strong discovery potential.

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