Highlights of the October 2025 grab sampling program include:

• 81.3 g/t Au and 1.361% Cu.
• 122.1 g/t Au and 1.087 % Cu.
• 116.8 g/t Au and 2.284% Cu.
• 75.1 g/t Au and 1.165 % Cu.

Stewart, British Columbia--(Newsfile Corp. - February 23, 2026) - Decade Resources Ltd. (TSXV: DEC) ("Decade" or the "Company") announces that it has received assay results from sampling on the Bonaparte copper-gold property, located approximately 50km north of Kamloops, B.C., within the Kamloops Mining Division. The Company sent 71 grab samples from an October visit in for assaying that included bedrock quartz-chalcopyrite vein material, hornfelsed argillite wall rock and mineralized dump material from past open pitting activities. Gold assays ranged from 0.001 to 122.1 g/t gold and 0.006 to 2.28 % copper.

The property has different target areas including:

1. Cu/Au/Mo porphyry potential
2. Bulk-tonnage RIRGS target with high grade gold results in historic drilling, trenching, underground exploration**
3. High grade gold-copper low sulphidation veins systems.

Ed Kruchkowski, President of Decade Resources, stated:

"The Bonaparte Gold project is an exciting property located in an area well accessed by a network of logging roads and infrastructure. The Company is very excited to continue with a strategy for advancing the project, which has the potential to add great value for both the Company and the shareholders. As the Company continues compiling all the historic data, it is anticipated that this will aid the designing and completing of drill programs across multiple high-priority gold and copper targets. The Company feels that historic work basically concentrated on the Discovery Zone area which represents an area 300 m wide and 250 m long in the NW corner of the claims and did not explore other compelling targets. The Company plans a multi-phase program including drilling, soil and silt sampling and further geophysics."

The sampling was conducted on exposed quartz-sulphide vein material in open cuts, altered and hornfelsed argillite in the contact areas and mineralized material in dump areas.

Highlights of the October 2025 sampling are shown below:

Note: The samples above were random in nature but do not necessarily represent the metal content in the source area. The Company feels that the high metal content is highly encouraging and further investigation is warranted.

Samples 25-BPE 14 and 15 were taken from dump material along an overgrown trench on a quartz-chalcopyrite-pyrite vein. Samples BPE 31, 37 and 44 are from dump material left from the previous high grading operations consisting of mixed wall rock and quartz-chalcopyrite-pyrite mineralization. Sample 25-BPE 62 is from a quartz vein with minor chalcopyrite along the east wall of the previous mining pit. Sample 25-BPE 64 and 65 are from sub-crop of the south Crow vein exposed during reclamation and 25-BPE-70 is a sample of quartz-chalcopyrite along the west side of the mining pit.

Highlights of the July 2025 sampling previously released are shown below:

The high bismuth and tellurium values indicate a potential for a RIRGS environment **.

The following map shows the location of Samples 25-BPE 8 to 15 inclusive and 25-BPE 63 to 67 inclusive.

To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/3615/284827_f834aeb07486593d_001full.jpg

Map is extracted from a 43-101 on the property prepared in 2019 for the previous operators by R. Kemp, P.Geo.

Samples collected in July are shown in a blue colour while the October 2025 sampling is shown in a red colour.

Out of the 71 samples collected in October, 37 assayed > 1 g/t gold while 36 assayed > 0.1 % copper.

The following photo shows the location of sample 25-BPE-27 to 49 inclusive, 25-BPE-53 to 56 inclusive, 25-BPE-59 to 62 inclusive and 25-BPE-68 to 71 inclusive. Sampling from July 2025 is shown in black colour and October 2025 in a red colour.

To view an enhanced version of this graphic, please visit:https://images.newsfilecorp.com/files/3615/284827_f834aeb07486593d_002full.jpg

2026 Strategy to Advance the Gold-Copper Targets

The historic IP surveys successfully delineated a number of anomalous zones and features for Discovery Zone style Au-vein targets, extending southward as well as parallel targets to the east underlying anomalous soil geochemistry. The Discovery Zone contains a series of parallel and sub-parallel gold-bearing quartz veins hosted within a mylonitic shear zone some 250 to 300 meters wide. A basalt cap immediately to the south of the Discovery Zone covers the projected extension of this auriferous zone. Compilation of all historical exploration results have delineated a 2 km long, gold and copper soil geochemistry anomaly extending from the Discovery Zone to the southeast, down the Cooler Creek valley. Outcrop is limited in the valley by glacial till cover. A historic drill hole, 15-05 located roughly 500m east of the Discovery zone area tested a coincident resistivity and Cu-Au soil geochemical anomaly encountering quartz veins in granodiorite similar to those encountered in the "Discovery Zone." Assay results from DDH 15-05 returned 7.88g/t gold, 38.4g/t silver and 0.33% copper over a 1.0m core width. The 1988 soil geochemical surveys along Cooler Creek identified many anomalous Au-Cu soil geochemical anomalies with soil results reporting up to 3,270ppb Au and a rock grab sample of quartz vein material reporting 73.03g/t Au (2.13opt Au).

Existing geophysical data indicates the potential for a large porphyry system situated approximately 1km South of the original Discovery Zone. A second and smaller zone also appears to lie below the original Discovery Zone at depth. Data indicates the larger southerly body begins near the surface and gradually increases in size to approximately 3km wide x 2km wide at approximately 275m depth and then gradually decreases in size to a depth of 500m which is the extent of the geophysical data. Little to no geochemical surveys have been conducted in this area.

The Company QP has not verified the above results and they should not be relied on. They are included as reference data for exploration potential.

The Company is proposing four 1.5 km receiver lines to better define the low resistivity/high chargeability anomaly to the south of the Discovery area. In addition, drilling will test the Discovery area as well as IP anomalies with overlying MMI anomalies over the larger southern low resistivity/high chargeability anomaly. Soil sampling will be conducted east of the Discovery area as well as east of the copper-gold anomalies along Cooler Creek.

Assaying

All samples were prepared at MSA Labs' preparation laboratory in Terrace, B.C., and assayed at MSA Labs' geochemical laboratory in Langley, B.C. Gold was assayed using a fire assay with atomic absorption (AA) spectrometry finish. Samples over 25 parts per million gold were fire assayed with gravimetric finish. All samples were analyzed by four-acid digestion with multielement ICP-MS, with silver and base metal over limits being reanalyzed by emission spectrometry. MSA Labs' quality system complies with the requirements for the international standards ISO 17025 and ISO 9001. MSA Labs is independent of the company.

Qualified Person

Ed Kruchkowski, P.Geo., President of Decade Resources Ltd., is a Qualified Person as defined by National Instrument 43-101 and has reviewed and approved the technical contents of this news release. He also conducted the sampling reported in this press release.

About Decade Resources Ltd.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Forward-Looking Statements

This release includes certain statements and information that may constitute forward-looking information within the meaning of applicable Canadian securities laws. All statements in this news release, other than statements of historical facts, including statements regarding future estimates, plans, objectives, timing, assumptions or expectations of future performance, including without limitation, that the Company will receive regulatory approval of the Option, the exercise of the Option, exploration plans for the Property and the use of funds for the recently completed private placement are forward-looking statements and contain forward-looking information. Generally, forward-looking statements and information can be identified by the use of forward-looking terminology such as "intends" or "anticipates", or variations of such words and phrases or statements that certain actions, events or results "may", "could", "should" or "would" or occur.

Forward-looking statements are based on certain material assumptions and analysis made by the Company and the opinions and estimates of management as of the date of this press release, including that Company will be able to receive regulatory approval for the Option, that the Company will be able or willing to make the Option Payments in order to exercise the Option, that the Company will have the necessary funds and resources to conduct its exploration plans on the Property and that the Company will use the proceeds from the private placement as anticipated.

These forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking statements or forward-looking information. Important risks that may cause actual results to vary, include, without limitation, the risk that the Company is unable to receive regulatory approval for the Option Agreement; that the Company may be unable or unwilling to make all Option Payments and exercise the Option; that the Company may be unable to conduct its exploration plans on the Property as anticipated, or at all; and that the Company may not use the proceeds from the private placement as anticipated.

Although management of the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements or forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements and forward-looking information. Readers are cautioned that reliance on such information may not be appropriate for other purposes. The Company does not undertake to update any forward-looking statement, forward-looking information or financial outlook that are incorporated by reference herein, except in accordance with applicable securities laws.

References

Logan, J.M., and Mihalynuk, M.G., 2013. Bonaparte gold: another 195 Ma Au-Cu porphyry deposit in southern British Columbia? In: Geological Fieldwork 2012, British Columbia Ministry of Energy, Mines and Natural Gas. British Columbia Geological Survey Paper 2013-1, 71-80.

Minfile BC

NI 43-101 Technical Report on the Bonaparte Gold Project by R. Kemp, P.Geo.

**Reduced intrusion-related gold systems (RIRGS) are characterized by widespread arrays of sheeted auriferous quartz veins that preferentially form in the brittle carapace at the top of small plutons, where they form bulk-tonnage, low-grade Au deposits characterized by a Au-Bi-Te-W metal assemblage, such as the Fort Knox and Dublin Gulch deposits. https://www.researchgate.net/publication/277131625_Reduced_Intrusion-related_Gold_Systems

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/284827