Highlights:

• 3.63 g/t gold, 3.50 g/t silver and 0.27% copper over 6.40 metres from 61.2 metres (COR-25-38)
• Mineralization interpreted as two parallel shear-hosted zones with gold-bearing veins and veinlets, a distinct style from Springer and Perry
• Results support tighter-spaced follow-up drilling to advance Cooke toward a Maiden Mineral Resource Estimate (MRE)

Toronto, ON – February 27, 2026 – XXIX Metal Corp‎. (XXIX.V | QCCUF: OTCQB | 5LW0.F) (“XXIX” or the “Company”) is pleased to report initial drill results from the Cooke Zone, located approximately 2 kilometres east of the Company’s envisioned Opemiska open pit. These early results confirm that Cooke hosts meaningful gold-copper-silver mineralization and highlight the potential for Cooke to emerge as a satellite deposit capable of providing incremental mill feed to the broader Opemiska development concept.

Importantly, drilling completed to date has identified at least two parallel mineralized zones, intersected in every hole, supporting continuity and strengthening the case for systematic delineation. Cooke is a past-producing mine that currently has no NI 43-101 resource, making it a clear growth opportunity within the broader Opemiska district. Confirming two parallel mineralized zones in early drilling supports the potential to advance Cooke toward a maiden resource, which could translate into incremental, near-surface feed for the envisioned Opemiska operation. If delineated, Cooke could increase overall project scale, improve mine plan flexibility, and enhance development optionality as XXIX works toward the next Opemiska MRE and the project’s PFS pathway.

“These first holes at Cooke validate the opportunity to add high-value, near-surface ounces and copper to the broader Opemiska story,” said Guy Le Bel, CEO of XXIX. “Cooke is a past-producing area with clear room for growth. We’re encouraged by the consistency of encountering two parallel zones and we plan to follow up with tighter-spaced drilling to advance Cooke toward a maiden resource.”

Cooke Crown Pillar Drilling Program: Two Parallel Zones Confirmed

The Company expanded its initial Cooke drill program to target approximately 10,000 metres across the Cooke Zone and Saddle Zone (see news release dated December 8, 2025). The program focused on the near-surface crown pillar, designed to test and better define the previously interpreted North Zone and South Zone over an approximate 700-metre strike length.

Successful delineation of a mineralized crown pillar at Cooke has the potential to strengthen the overall Opemiska development plan as the Company advances the broader project toward an updated Mineral Resource Estimate (MRE) intended to support a Preliminary Feasibility Study (PFS).

Location of Cooke Drill Holes – Figure 1

Interpretation and Next Steps

Cooke appears to reflect a different mineralization style than the Springer and Perry zones that underpin the envisioned Opemiska open pit. Whereas Springer and Perry are characterized by larger, more continuous veins, mineralization at Cooke is interpreted to be hosted within two shear zones containing multiple smaller veins and veinlets, which can produce locally higher-grade (“nuggety”) intersections and greater variability in grade and thickness. Within the Chibougamau copper zone, drilling intersected narrow, but high copper values as expected.  The Company believes these results justify a follow-up program with narrower drill spacing to support a potential maiden MRE at Cooke.

Table 1) Selected intersects from Chibougamau Cooke Gold Zone

True thickness are unknown.

Table 2) Cooke Drill Collar Locations

Quality Control and Assurance

All samples (NQ core) are logged and cut in two at the company secure facility in Chapais, under the supervision of Ahcene Gaoui, p.geo., project geologist.  The samples are sent to Agat laboratories in Val-d’Or by a secure transport.  One standard and one blank are inserted in every 50 samples, the blank always in a mineralized zone.‎

The analytic method used is fire assay, trace Au, AAS finish and Fire assay, Au grade with gravimetric finish for over limit results.  We use Aqua regia disgest, metals package ICP OES finish for Cu and Ag with ICP-MS finish for over limit results.

QP Statement

The technical information contained in this news release has been reviewed and approved by Denis McNichols, P.Geo and géo., Vice President Exploration for XXIX Metal, a Qualified Person, as defined in "National Instrument 43-101, Standards of Disclosure for Mineral Projects.

About XXIX Metal Corp‎.

XXIX is advancing its Opemiska and Thierry Copper projects, two significant Canadian copper assets. The Opemiska Project, one of Canada's highest-grade open pitable copper deposits, spans 21,333 hectares in Quebec's Chapais-Chibougamau region, with strong infrastructure and nearby access to the Horne Smelter. An October 2025 Preliminary Economic Assessment outlined a 12,500 tpd open pit operation over a 17-year mine life, generating an after-tax NPV8% of $505M, IRR of 27.2%, and a 2.3-year payback period ($4.35/lb copper price, $3,000/oz gold price, $30/oz silver price). The Thierry Project hosts the K1 (near-surface) and the past-producing K2 (underground & surface) zones (see XXIX news release dated October 1, 2024 for details regarding resources). Thierry has significant infrastructure in place including an all-season road, an airport within 5km, a provincial power grid within 8km, and nearby rail. With these two high-potential projects, the Company has solidified its position as a key player in the Canadian copper sector and has established itself as one of Eastern Canada's largest copper developer.

For further information, please contact:

Guy Le Bel, Chief Executive Officer

Phone: 514.654.8550
Email: [email protected]
www.xxix.ca

Forward Looking Statements

This news release contains certain forward-looking statements, including statements about the Company’s belief that Opemiska has potential for continued growth, various cost, price and production assumptions used to inform the PEA, and outstanding risk factors, including Opemiska’s proximity to the Town of Chapais, Historical Assay validation, Geotechnical considerations of open stopes in the eastern pit wall, the Venture sill, the Gwillim fault, host rock competency and Historical Stope Modeling. Wherever possible, words such as “may”, “will”, “should”, “could”, “expect”, “plan”, “intend”, “anticipate”, “believe”, “estimate”, “predict” or “potential” or the negative or other variations of these words, or similar words or phrases, have been used to identify these forward-looking statements. These statements reflect management’s current beliefs and are based on information currently available to management as at the date hereof.

Forward-looking statements involve significant risk, uncertainties and assumptions. Many factors could cause actual results, performance or achievements to differ materially from the results discussed or implied in the forward-looking statements. Such factors include, among other things: risks related to uncertainties inherent in drill results and the estimation of mineral resources; and risks associated with executing the Company’s plans and intentions. These factors should be considered carefully, and readers should not place undue reliance on the forward-looking statements. Although the forward-looking statements contained in this news release are based upon what management believes to be reasonable assumptions, the Company cannot assure readers that actual results will be consistent with these forward-looking statements. These forward-looking statements are made as of the date of this news release, and the Company assumes no obligation to update or revise them to reflect new events or circumstances, except as required by law.

The reader is advised that the Preliminary Economic Assessment (PEA) summarized in this news release is intended to provide only an initial, high-level review of Opemiska’s economic potential. The PEA mine plan and economic model include numerous assumptions and the use of inferred mineral resources. Inferred mineral resources are considered to be too speculative to be used in an economic analysis except as allowed for by NI 43-101 in PEA studies. There is no guarantee that inferred mineral resources can be converted to indicated or measured mineral resources, and as such, there is no guarantee Opemiska’s economics described herein will be achieved. XXIX may be eligible for Clean Technology Manufacturing Investment Tax Credit (CTM-ITC). This legislation has been enacted on June 20, 2024. There is no guarantee the Company will be able to access the CTM-ITC.

Non-IFRS Financial Measures

XXIX has included certain non-IFRS financial measures in this news release, such as C1 Cash Cost which are not measures recognized under IFRS and do not have a standardized meaning prescribed by IFRS. As a result, these measures may not be comparable to similar measures reported by other corporations. Each of these measures used are intended to provide additional information to the user and should not be considered in isolation or as a substitute for measures prepared in accordance with IFRS.

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 news release.