STLLR Gold Intersects 6.03 g/t Au over 22.25 m (Including 12.67 g/t Au over 9.25 m) and 2.14 g/t Au over 33.86 m (Including 14.89 g/t Au over 2.33 m) at the Jonpol Deposit of the Tower Gold Project

Toronto, Ontario--(Newsfile Corp. - April 27, 2026) - STLLR Gold Inc. (TSX: STLR) (OTCQX: STLRF) (FSE: O9D) ("STLLR" or the "Company") is excited to report additional assay results from its 2026 drilling program at the Jonpol Deposit ("Jonpol") at the Garrison Property of the Tower Gold Project ("Tower" or the "Project") in the Timmins Mining Camp in Ontario, Canada.

Table 1: 2026 Jonpol Deposit Drilling Highlights:

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

"Our continued success in delivering high-grade, near-surface results underscores the exceptional potential of Jonpol and its ability to drive meaningful value for Tower," said Keyvan Salehi, P.Eng., MBA, President, CEO, and Director of STLLR. "Ongoing testing of the Jonpol extension is yielding highly encouraging results and the opportunity to potentially expand the open-pit strike length to 1,200 meters-while consistently maintaining strong, above-average grades as we grow."

"An enhanced Jonpol Deposit represents a significant opportunity for Tower's future," he added. "Bringing higher-grade, open-pit mineralization forward in the mine plan positions us to potentially enhance the Project's estimated production profile and unlock greater overall economic value. These results not only demonstrate impressive continuity across the system but also validate the strength and accuracy of our geological model."

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 ("DPFZ"). Mineralization is hosted in structurally controlled alteration zones within mafic to ultramafic rocks and gold mineralization is closely associated with felsic intrusive rocks.

The 2026 drill program, with an estimated 8,000 m of planned drilling in the first half of the year (STLLR is currently finalizing plans for the second half of the year), is designed to deliver on two primary objectives:

• Strike Extension: majority of the 2026 meterage targets the western extension of Jonpol's open-pit mineralization. Successful results here could expand the strike from 400 m as currently defined in the Tower Preliminary Economic Assessment ("Tower PEA")¹ to approximately 1,200 m. Jonpol remains open along strike and at depth.

• Infill & De-risking: the drill program is also designed to confirm the block model and support the potential expansion of higher-grade mineralization to incorporate into the Tower Mineral Resource Estimate ("Tower MRE")¹.

These additional assays continued to intersect high-grade mineralization (see Table 1) in targeted areas along the western strike extension. Notably, these results yielded grades exceeding the current average open-pit grades at Jonpol in the Tower MRE, suggesting the potential to expand the mineral resources. These results continue to confirm the current geological model, supporting the potential expansion of higher-grade mineralization.

Figure 1: Tower Gold Project - Drill Location Map 

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Figure 2: Jonpol Deposit - Drilling Results Map

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Figure 3: Jonpol Deposit - Drilling Cross Section "A-B" Looking Northeast

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Figure 4: Jonpol Deposit - Drilling Cross Section "C-D" Looking Northeast

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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 ("TT") 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.