Mr. Scott Berdahl reports

SNOWLINE GOLD ANNOUNCES INCLUSION INTO MULTIPLE EQUITY INDICES AND PROVIDES PROJECT UPDATES

Snowline Gold Corp. has been included in the S&P/TSX Composite Index, Canada's premier equity benchmark index, which includes the largest and most actively traded companies on the Toronto Stock Exchange, as well as the FTSE Canada All Cap Index. Both index rebalances will take effect after market close on Friday, Sept. 18.

"Our inclusion into multiple equity indices reflects the momentum under way at Snowline and the significance of our flagship asset, Valley, positioning Snowline alongside the largest and most established companies in Canada," said Scott Berdahl, chief executive officer and director of Snowline. "We expect these inclusions to enhance our visibility amongst a broader investor base, particularly amidst the backdrop of increased generalist attention on gold and the wider natural resource space."

In addition, the company is pleased to provide updates on its field activities from the continuing 2026 field season, which represents Snowline's largest field campaign to date. Comprehensive engineering, environmental baseline and exploration programs are currently under way.

"This has been an incredibly productive year for Snowline to date," said Mr. Berdahl. "Our primary focus is on the progression of the Valley gold deposit on our Rogue project. We have made significant progress towards a PFS [prefeasibility study], based on rigorous engineering fieldwork and lab work to inform key trade-offs in mine design. Complementing this work are extensive, multifaceted environmental baseline studies, providing a clear picture to inform upcoming project permitting.

"Value creation through exploration remains a core part of our strategy. The discovery of Valley serves as a strong proof-of-concept for the prospectivity of the surrounding geological district. We are intrigued by the scale of the mineralized system that continues to unfold at Valley, with gold mineralization encountered across a wide footprint well beyond the mineral resource boundaries in current drilling on the target. In addition, we eagerly await assay results for exploration drill programs under way on the Gracie and Duke targets on our Rogue project as well as the first-ever drill program on our Cynthia project's newly discovered Crossroad target."

Engineering update

Rogue PFS: Snowline's PFS for the Valley gold deposit on the Rogue project remains on track for delivery by Q1 2027, supported by an extensive 2026 field investigation program that is nearing completion. The PFS will represent a key milestone for the company, with a refined mine plan reflecting integrated trade-off considerations around various design components. The associated rigour in site investigation and cost estimation is expected to allow the company to establish initial proven and probable reserves for the Valley gold deposit, based on an updated mineral resource estimate for Valley and associated mine plan.

Key trade-offs being explored for the PFS include:

• Throughput: Increasing mill capacity from the 25,000-tonne-per-day rate contemplated in the preliminary economic assessment (PEA) may have positive effects on gold output and overall project economics, considered against associated increases in preproduction capital expenditures and other factors.
• Power: Liquefied natural gas is being explored as a primary fuel versus diesel generators used in the PEA, based on a detailed power and load model for the project site. With power as the largest driver of operating costs, gains in efficiency can have meaningful impact on project economics. Studies to assess potential contributions from solar, hydro and wind energy sources have also been advanced.
• Tailings and waste rock layout: The PEA envisioned a tailings storage facility (TSF) served by an 18-kilometre tailings pipeline. For the PFS, trade-offs are considered for this site against additional locations, including sites closer to the mine site with potential for co-disposal of waste rock and tailings.
• Flow sheet optimization: Multiple mill-based processing methods are considered, complemented by optimization of grind size versus gold recovery and site layout providing efficiency and optionality moving forward.
• Water management: Water management, site water balance, and the discharge and treatment strategy are advancing to support permitting.

The PFS will establish the design basis and project description that are expected to carry directly into a feasibility study and project permitting, allowing the two to advance in parallel.

Environment and permitting update

Environment: Snowline's 2026 environmental baseline program is under way and on schedule, marking nearly one full year of significant expansion on work initiated in 2022. Field programs include hydrology, hydrogeology, water quality, meteorology, geochemistry, fish and aquatic habitat, terrestrial environment, including wildlife and vegetation, heritage resources, and air quality.

Environmental baseline data will be integrated into PFS engineering design and trade-off studies to ensure the project design meets rigorous environmental standards and permitting requirements.

Permitting: The company is targeting submission of a project description to the Yukon Environmental and Socio-economic Assessment Board (YESAB) in conjunction with its PFS to initiate the presubmission engagement (PSE) for the Rogue project. YESAB's PSE process is a newly introduced (2022), early, structured engagement process for major Yukon projects that aims to identify issues, clarify information requirements, and align proponents, first nations, regulators and communities before a formal environmental and socio-economic assessment is submitted to YESAB, improving the quality, efficiency and predictability of the subsequent YESAB review. Following PSE, Snowline intends to submit the project proposal to YESAB that will initiate the screening and assessment process in early 2028.

Exploration update

Valley: Roughly 4,200 metres of exploration drilling have been completed to date on Valley in 2026, in addition to approximately 2,300 m focused on geotechnical definition, infrastructure design, condemnation and potential borrow source delineation. Recent exploration drilling at Valley focuses on untested areas within and around the Valley intrusion, including at depth and distal to the current mineral resource estimate (MRE). Brief notes on reported drill holes follow, with results summarized in Table 1:

• V-26-158: drilled outside of the intrusion and outside of PEA pit as a 300-metre stepout from previous drilling along a northwest-trending structural corridor;
• V-26-159: deepest hole to date at Valley, ending at 1,047 metres downhole (approximately 900 metres vertical depth), drilled along western margin of the intrusion, west of and below the central high-grade zone of the deposit; the hole intersected 3.4 metres averaging 5.86 grams per tonne gold from 515.0 metres downhole, more than 200 metres below the PEA pit shell, associated with a zone of northeast-trending quartz veins; this interval sits within a 625.5-metre run of core almost entirely below the PEA pit shell averaging 0.36 g/t Au, including intermittent barren zones;
• V-26-160: long intersection of low grade outside of pit, with isolated greater-than-one-gram-per-tonne-gold occurrences at depth; did not intersect northeastern wall of the intrusion and ended in weakly mineralized granodiorite;
• V-26-161: drilled from northeast, entirely outside of PEA pit; intersected a broad zone of low grade at depth, with isolated occurrences of greater than one g/t Au, including 2.68 g/t Au over 4.0 m from 624 m downhole, roughly 300 m below the PEA pit shell;
• V-26-162: a short (246 m) hole drilled in an untested area in the southeastern part of the Valley intrusion, intersecting low grades;
• V-26-163: deepest hole to date along the northeast margin of the intrusion; extends known low-grade mineralization to depth; the strongest gold mineralization was encountered at the bottom of the hole, which ended in mineralization within the intrusion (6.3 m averaging 1.03 g/t Au);
• V-26-164: long run of low to moderate grades at depth, returned 450.5 m averaging 0.4 g/t Au outside of the pit-shell boundary with localized high grades (Table 1).

Gracie: Gracie is a reduced-intrusion related gold system (RIRGS) target on the Rogue project located roughly four km east of Valley. Unlike Valley (also an RIRGS), where the mineralized intrusion is exposed at surface, the causative intrusion at Gracie does not daylight. The scale of alteration and anomalous gold geochemistry, the potential to host a completely intact RIRGS, and the proximity to Valley make Gracie an attractive exploration target.

Snowline has drilled roughly 2,300 m to date at Gracie in 2026 across three holes, with drilling continuing. The 2026 drill program at Gracie targets a downdip search space, northwest of the anomalous surface geochemistry targeted in earlier drilling by the company, following up on promising results in a single 2025 drill hole in this area. Assays for 2026 drilling at Gracie are pending.

Duke: Duke is an RIRGS target on the Rogue project roughly 11 km southeast of Valley. The system is centred on a 1.4-kilometre-by-1.3-kilometre multiphase intrusive complex with multiple breccia centres. Preliminary drilling of a minor breccia in DUK-25-0032 returned 8.0 m averaging 1.72 g/t Au, including 4.0 m at 2.73 g/t Au.

Snowline has drilled roughly 1,600 m at Duke in 2026 across five holes. This season's drilling targets breccia units identified by mapping and prospecting in 2025 as well as by geophysics. Assays for 2026 drilling at Duke are pending.

Crossroad: Late 2025 prospecting identified a new gold target, Crossroad, roughly 27 km south of Valley on the Cynthia project, hosting mineralization in granitic dikes, hydrothermal breccias and altered sedimentary rocks. Crossroad is situated along the same five-kilometre structural trend as the company's Intersection target. Selective grab samples from Crossroad returned up to 14.1 g/t Au and 3,505 g/t silver.

Follow-up surface sampling in 2026 has yielded encouraging results, including a continuous rock-saw channel sample yielding 1.5 g/t Au over 5.0 m. Soil and talus fine sampling shows elevated to anomalous gold values across a zone of roughly 900 by 200 m. An initial drill program at Crossroad is under way, with 435 m drilling across two holes drilled to date, and drilling is continuing. All assays for this drilling are pending.

Quality assurance/quality control

On receipt from the drill site NQ2-sized (50.6-millimetre-diameter) drill core was systematically logged for geological attributes, photographed and sampled at Snowline's Forks camp. Sample lengths as small as 0.5 m were used to isolate features of interest, but most samples within moderate to strong mineralization were 1.0 m in length; otherwise, a default 1.5-metre downhole sample length was used. Core was cut in half lengthwise along a predetermined line, with one-half (same half, consistently, dictated by orientation line where present or by dominant vein orientation where absent) collected for analysis and one-half stored as a record. Field duplicates were collected at regular intervals as one-fourth core samples by splitting the one-half core sent for sampling, leaving a consistent record of half-core material from duplicate and non-duplicate samples alike. Standard reference materials and blanks were inserted by Snowline personnel at regular intervals into the sample stream. Bagged samples were sealed with security tags to ensure integrity during transport. They were delivered by an expeditor to Bureau Veritas's preparatory facility in Whitehorse, Yukon. Sample preparation was completed in Whitehorse, with analyses completed in Vancouver.

Bureau Veritas (BV) is accredited to ISO/IEC 17025 and ISO9001 for quality management and is independent of Snowline. Samples were crushed by BV to greater than 85 per cent passing below two millimetres and split using a riffle splitter. Two-hundred-fifty-gram splits were pulverized to greater than 85 per cent passing below 75 microns. A four-acid digest with an inductively coupled plasma mass spectrometry (ICP-MS) finish was used for 59-element analysis on 0.25-gram sample pulps (BV code: MA250). All samples were analyzed for gold content by fire assay with an atomic absorption spectroscopy (AAS) finish on 30-gram samples (BV code: FA430). Any sample returning greater than 10 g/t Au was reanalyzed by fire assay with a gravimetric finish on a 30-gram sample (BV code: FA530).

About Snowline Gold Corp.

Snowline Gold is a Yukon gold exploration and development company focused on advancing its 100-per-cent-owned Valley gold deposit on its flagship Rogue project while unlocking district upside on its 360,000-hectare (3,600-square-kilometre) mineral tenure in the highly prospective yet underexplored Selwyn basin.

Valley is a large, low-strip, near-surface, greater-than-one-gram-per-tonne-gold, bulk-tonnage gold system hosting an open MRE (mineral resource estimate) of 7.94 million ounces gold at 1.21 grams per tonne measured and indicated (in 204 million tonnes) and an additional 890,000 ounces gold inferred at 0.62 gram per tonne gold (in 44.5 million tonnes), with a cut-off grade of 0.3 gram per tonne gold. Results of a preliminary economic assessment (PEA) for Valley suggest the potential to support a long-life mining operation with a strong production profile and low production costs. The MRE and PEA are detailed in the recent technical report for Rogue, prepared in accordance with National Instrument 43-101 standards, entitled "Independent Preliminary Economic Assessment for the Rogue Project Yukon, Canada," dated Aug. 27, 2025, with an effective date of March 1, 2025, and available on SEDAR+ and the company's website.

Snowline's project portfolio sits within the prolific Tintina gold province, host to multiple million-ounce-plus gold mines and deposits across central Yukon and Alaska. The company's comprehensive first-mover position and extensive exploration database provide a distinct competitive advantage and a unique opportunity for investors to be part of multiple discoveries, the advancement of a significant gold deposit and the creation of a new gold district.

Qualified person

Information in this release has been prepared under the supervision of and reviewed and approved by Thomas Branson, MSc, PGeo, vice-president, exploration, for Snowline, and Victor Vdovin, MBA, PEng, vice-president, engineering, for Snowline, each a qualified person for the purposes of National Instrument 43-101, Standards of Disclosure for Mineral Projects.

All terms not otherwise defined have the meaning given to them under the CIM (Canadian Institute of Mining, Metallurgy and Petroleum) definition standards for mineral resources and reserves.

We seek Safe Harbor.