STLLR Gold Inc. (TSX: STLR) (OTCQX: STLRF) (FSE: O9D) reports final assay results at the Jonpol Deposit at the Garrison Property and exploration plans at the Tower Gold Project in the Timmins Mining Camp in Ontario, Canada for the remainder of 2026.

Table 1: 2026 Jonpol Deposit Drilling Highlights:

“g/t Au” = grams per tonne gold; “m” = metres; “TT” = True Thickness

“We concluded first-half 2026 drilling at Jonpol with high-grade gold intersections and robust metal factors, potentially expanding the known mineralization and increasing confidence in the block model,” said Keyvan Salehi, P.Eng., MBA, President, CEO, and Director of STLLR Gold. “Based on these strong results, we plan to continue drilling Jonpol alongside the 903 and Garrcon deposits at the Garrison Property of Tower for the remainder of the year.”

Jonpol Deposit Drilling (See Figures 1-4 for Diagrams; See Tables 1-3 for Assays and Drill Details)

The Jonpol Deposit is situated in the Garrison Property at the eastern end of Tower (see Figure 1) along the Munro Fault, a splay from the regional Destor-Porcupine Fault Zone. Mineralization is hosted in structurally controlled alteration zones within mafic to ultramafic rocks and gold mineralization is closely associated with felsic intrusive rocks.

Tower Exploration Plans for Rest of 2026

The Company plans to complete approximately 15,000 m of drilling during the remainder of 2026, targeting the Jonpol, 903, and Garrcon deposits at Tower’s Garrison Property. The drill program is focused on converting estimated inferred mineral resources to higher confidence categories and expand the higher-grade gold mineralization for potential incorporation into an updated Tower Mineral Resource Estimate.¹

 Figure 1: Tower Gold Project – Drill Location Map

 Figure 2: Jonpol Deposit – Drilling Results Map

 Figure 3: Jonpol Deposit – Drilling Cross Section “A-B” Looking Northeast

 Figure 4: Jonpol Deposit – Drilling Cross Section “C-D” Looking Northeast

Table 2: Drilling Intercepts

Table 3: Drill Hole Details

Quality Control Procedures

NQ drill core is oriented and cut with half sent to ALS Laboratories Inc. (ALS) for drying and crushing to -2 mm, with a 1.00 kg split pulverized to -75 µm (200#). ALS is an ISO 17025 accredited laboratory. A 50 g charge is Fire Assayed and analyzed using an AAS finish for Gold. Samples above 10.00 g/t Au are analyzed by Fire Assay with a gravimetric finish and selected samples with visible gold or high-grade mineralization are assayed by Metallic Screen Fire Assay on a 1.00 kg sample. STLLR inserts independent certified reference material and blanks with the samples and assays routine pulp repeats, as well as completing routine third-party check assays.

True thickness was calculated in Leapfrog Geo, perpendicular to the interpreted plane of mineralization using the dip and dip azimuth of the mineralized zones. All intercepts are calculated using a 0.30 g/t Au cut-off, a maximum of 5 m internal dilution and 25 g/t Au cap applied.

Qualified Person

John McBride, MSc., P.Geo., Vice President of Exploration for STLLR, who is the “Qualified Person” as defined by NI 43-101 for this Project, has reviewed and approved of the technical disclosure contained in this news release.

About STLLR Gold

STLLR Gold Inc. is a Canadian gold development company actively advancing high-potential gold projects in Canada: The Tower Gold Project and the Hollinger Tailings Project in the Timmins Mining Camp in Ontario and the Colomac Gold Project located north of Yellowknife, Northwest Territories. Tower and Colomac have the potential to become large-scale, long-life operations and are surrounded by exploration land with favourable upside potential. Hollinger has the potential for near-term value creation. STLLR’s experienced management team, with a track record of successfully advancing projects and operating mines, is working towards rapidly advancing these projects.