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Toronto, Ontario--(Newsfile Corp. - August 13, 2026) - Seabridge Gold (TSX: SEA) (NYSE: SA) announced today that it has filed its Report to Shareholders, Interim Financial Statements and Management's Discussion and Analysis for the three and six months ended June 30, 2026 on SEDAR+. To review these documents on the Company website, please see https://www.seabridgegold.com/investors/financial-reports. Recent Highlights Extensive 2026 KSM field program to support the feasibility study advancing on schedule. US$100M credit facility enables KSM momentum to continue Engagement with preferred candidate for earn-in joint venture continues 2025 Sustainability Report published BC Supreme Court requires reconsideration of KSM Substantially Started Designation Spin-out of Courageous Lake project to shareholders completed Awarded Smithers Resource and Mining Excellence Award The Gold Market: Finding Stability Financial Results During the three-months ended June 30, 2026, Seabridge posted net income of $117.5 million ($1.08 per share) compared to a net profit of $12.3 million ($0.12 per share) for the same period in 2025. The increase in net income was largely driven by gains realized on the distribution of the Courageous Lake project. During the second quarter, Seabridge invested $32.5 million in mineral interests, property and equipment at its projects compared to $21.1 million invested in the second quarter of 2025. At June 30, 2026, net working capital was $53.6 million compared to $109.8 million at December 31, 2025. In July 2026, Seabridge arranged an unsecured, short-term loan agreement with a strategic investor for up to US$100 million. The Loan will be used to support the significant investments we are making in our summer season work programs at KSM. The loan is drawable at the Company's election in minimum calls of US$10 million each, has an interest rate of 7% compounded monthly, and is capitalized and matures on December 31, 2026. The Loan is repayable either in cash at any time or, in certain circumstances and subject to TSX approval, in common shares of Seabridge if outstanding at maturity, at the Company's option. The Loan includes customary conditions, representations, warranties and covenants. The Company intends to draw on the Loan, if required, to strengthen its consolidated liquidity position. No amounts are currently drawn on the Loan. About Seabridge Gold Seabridge Gold holds a 100% interest in several North American gold projects. Its principal assets are the KSM and Bronson Corridor projects in British Columbia's Golden Triangle. Additional projects include Snowstorm in Nevada's Getchell Gold Belt and the 3 Aces project in the Yukon. Further information on Seabridge's mineral reserves and mineral resources is available at www.seabridgegold.com. None of the Toronto Stock Exchange, New York Stock Exchange, or their Regulation Services Providers accepts responsibility for the adequacy or accuracy of this release. ON BEHALF OF THE BOARD"Rudi Fronk"Chair and C.E.O. For further information please contact:Rudi P. Fronk, Chair and C.E.O.Tel: (416) 367-9292 • Fax: (416) 367-2711Email: [email protected] To view the source version of this press release, please visit https://www.newsfilecorp.com/release/309598

Courageous Lake Spin-Out Approved by +99% Vote of Shareholders Toronto, Ontario--(Newsfile Corp. - May 22, 2026) - Seabridge Gold Inc. (TSX: SEA) (NYSE: SA) ("Seabridge" or the "Company") today provided the voting results of its special meeting of shareholders held on May 22, 2026. A total of 62,829,369 common shares were represented at the meeting, representing 58.51% of the issued and outstanding common shares of the Company on the record date for the meeting. All matters presented for approval at the meeting were duly authorized and approved, as follows: A special resolution approving an arrangement (the "Arrangement") under section 192 of the Canada Business Corporations Act (the "CBCA") between the Company, its shareholders and Valor Gold Corp. ("Valor"), pursuant to which the Company and the Company's shareholders will receive shares of Valor: An ordinary resolution approving the proposed restricted share unit and deferred share unit plan of Valor: Terms of the Arrangement Pursuant to the Arrangement, Seabridge will transfer its 100% interest in the Courageous Lake gold project (the "Courageous Lake Project") located in the Northwest Territories, Canada into Valor, which is expected to become a separately listed issuer on the Toronto Stock Exchange (the "TSX"), then distribute 100% of the common shares of Valor ("Valor Shares") to its shareholders ("Shareholders") by way of a plan of arrangement under the CBCA. Pursuant to the Arrangement, Seabridge will distribute the 55,000,000 shares to be held by Seabridge in Valor to Shareholders on the basis of one Valor Share for every approximately 1.957 Seabridge shares held.[1] The terms of the Arrangement, including the conditions to implementing the Arrangement, and the procedures to be followed by Shareholders in order to receive the securities that they are entitled to receive pursuant to the Arrangement, are further described in the Company's management information circular dated March 30, 2026 (the "Circular") available on Seabridge's website and under its profile on SEDAR+ at www.sedarplus.ca. The Arrangement is subject to the approval of the British Columbia Supreme Court (the "Court"). The anticipated hearing date for the application for the final order of the Court (the "Final Order") is May 27, 2026. Subject to obtaining the Final Order and the satisfaction or waiver of the conditions to implementing the Arrangement as set out in the arrangement agreement dated March 23, 2026 between the Company and Valor, the Arrangement is anticipated to be completed on or about June 3, 2026. Valor has applied to be listed on the TSX and to have its shares quoted on the OTCQB Venture Market (the "OTCQB") in the United States. Subject to the satisfaction of all necessary conditions of the TSX and OTCQB, the receipt of the Final Order, and the completion of the Arrangement, it is anticipated that the Old Seabridge Shares (as defined below) will be suspended from trading on TSX and NYSE as at close of trading on the first trading day following the closing date of the arrangement, and the New Seabridge Shares (as defined below) will be listed for trading under a new CUSIP/ISIN on TSX and NYSE as at open of trading on the second trading day following the closing date of the arrangement. Assuming the Arrangement is completed on June 3, 2026, the Old Seabridge Shares are anticipated to be suspended from trading from TSX and NYSE as at close of trading on June 4 and the New Seabridge Shares would be listed for trading on TSX and NYSE as at open of trading on June 5, 2026. It is similarly expected that the Valor Shares will be listed for trading on TSX at the same time as the New Seabridge Shares, being the open of trading on June 5, 2026. The timing of the commencement of trading of the Valor Shares on the OTCQB will be announced in a separate news release of Valor once formal approval is received from the OTCQB. [1] Based on 107,622,939 common shares of Seabridge currently issued and outstanding. Procedure to Exchange Shares The procedure for a shareholder to exchange their pre-Arrangement Seabridge common shares ("Old Seabridge Shares") for post-Arrangement Seabridge common shares ("New Seabridge Shares") and Valor Shares depends on how Old Seabridge Shares are held. Information is provided below, as well as in the Company's management information circular dated March 30, 2026, available under Seabridge's issuer profile on SEDAR+. Non-Registered (Beneficial) Shareholders If you hold your common shares of Seabridge through a broker, the exchange of shares will be processed automatically through CDS or DTC (as applicable). Seabridge recommends that you contact your broker to confirm if any steps are required by your broker in order to receive the New Seabridge Shares and Valor Shares in exchange for your Old Seabridge Shares following completion of the Arrangement. Registered Shareholders If you hold your common shares of Seabridge directly in a registered position (with a share certificate or DRS advice statement), you must take action to exchange your Old Seabridge Shares for New Seabridge Shares and Valor Shares. Computershare Investor Services Inc., the depositary under the Arrangement (the "Depositary"), mailed the Letter of Transmittal to registered Shareholders, which should be used by such Shareholders to exchange their certificates representing Old Seabridge Shares for DRS advices representing New Seabridge Shares or a physical certificate for New Seabridge Shares and DRS advices representing Valor Shares or a physical certificate for Valor Shares, when the Arrangement is completed. Until exchanged, each certificate representing Old Seabridge Shares will, after the Arrangement, represent only the right to receive, upon surrender in accordance with the Letter of Transmittal, New Seabridge Shares and Valor Shares. Registered Shareholders must deliver to the Depositary: (a) their certificate(s) representing such Old Seabridge Shares, if any, (b) a duly completed Letter of Transmittal, and (c) such other documents as the Depositary may require, in order to receive the certificates or DRS advices representing the New Seabridge Shares and Valor Shares to which they are entitled pursuant to the Arrangement. DRS Advices or a physical certificate, if so requested, for the New Seabridge Shares of a registered Shareholder and Valor Shares who provides the appropriate documentation described above, will be registered in such name or names and will be delivered to such address or addresses as such holder may direct in the Letter of Transmittal as soon as practicable following the Arrangement and after receipt by the Depositary of all of the required documents. Registered Shareholders are encouraged to complete and return the Letter of Transmittal, together with the certificate(s) representing your common shares of Seabridge and any other required documents and instruments, to the Depositary (at its principal offices in Toronto), in accordance with the instructions set out in the Letter of Transmittal so that if the Arrangement is approved, the consideration for your common shares can be sent to you as soon as possible following the Arrangement becoming effective. The Letter of Transmittal contains other procedural information related to the Arrangement and should be reviewed carefully. About Seabridge Gold Seabridge holds a 100% interest in several North American gold projects. Seabridge's principal asset, the KSM project, and its Bronson Corridor projects are located in Northwest British Columbia, Canada's "Golden Triangle". Its Snowstorm project is in the Getchell Gold Belt of Northern Nevada and the 3 Aces project is in the Yukon Territory. For a full breakdown of Seabridge's Mineral Reserves and Mineral Resources by category please visit Seabridge's website at http://www.seabridgegold.com. Neither the Toronto Stock Exchange, the New York Stock Exchange, the OTC Markets, nor their Regulation Services Providers accept responsibility for the adequacy or accuracy of this release. Forward-Looking Statements This document contains "forward-looking information" within the meaning of Canadian securities legislation and "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995. This information and these statements referred to herein as "forward-looking statements" are made as of the date of this document. Forward-looking statements relate to future events or future performance and reflect current estimates, predictions, interpretations, expectations or beliefs regarding future events and include, but are not limited to, statements with respect to: the Company's intention to spin-out Valor by way of plan of arrangement with the resulting distribution of its shares to Shareholders; the completion of the steps of the spin-out and the timing of completion of the spin-out, including the anticipated receipt of TSX and OTCQB approvals and the Final Order; the targeted listing of the New Seabridge Shares on the TSX and the NYSE, and the targeted listing of the Valor Shares on the TSX and OTCQB, and the timing thereof; and the anticipated focus of Valor post-spin-out being the advancement of the Courageous Lake Project. All forward-looking statements are based on Seabridge's or its consultants' current beliefs as well as various assumptions made by them and information currently available to them. Although management considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect. Forward-looking statements involve various risks and uncertainties. There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from Seabridge's plans or expectations include the risk that: the spin-out may not occur on the timeline anticipated or at all; the structure of the spin-out is subject to change; the Company does not receive the necessary approvals for the transaction, including TSX and court approvals or is not able to satisfy the conditions to the Arrangement; the shares of Valor may not be listed on the TSX or quoted on the OTCQB on the timeline anticipated or at all; the anticipated exploration focuses of Valor may not be as anticipated; changes occur in the underlying facts used to calculate a resource or reserve estimate or the geologic characteristics of the project that make declaration of a mineral resource or mineral reserve problematic; and other risks outlined in statements made by Seabridge from time to time in the filings made by Seabridge with securities regulators. Seabridge disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise, except as otherwise required by applicable securities legislation. We caution readers not to place undue reliance on these forward-looking statements as a number of important factors could cause the actual outcomes to differ materially from the beliefs, plans, objectives, expectations, anticipations, estimates assumptions and intentions expressed in such forward-looking statements. ON BEHALF OF THE BOARD"Rudi Fronk" Chair & C.E.O. For further information please contact: Rudi P. Fronk, Chair and C.E.O.Tel: (416) 367-9292Email: [email protected] To view the source version of this press release, please visit https://www.newsfilecorp.com/release/298643

Toronto, Ontario--(Newsfile Corp. - May 13, 2026) - Seabridge Gold (TSX: SEA) (NYSE: SA) announced today that it has filed its Interim Financial Statements and Management's Discussion and Analysis for the three-month period ended March 31, 2026 on SEDAR+ (www.sedarplus.ca). These statements are also available on Seabridge's website at https://www.seabridgegold.com/investors/financial-reports. Seabridge's Q1 2026 Report to Shareholders can be found here. Recent Highlights Board sets corporate objectives for 2026 KSM positioned for partnership announcement KSM mineral resources updated using metal prices consistent with most Tier 1 mining companies Maiden mineral resource reported for Snip North deposit Meeting date set to approve Courageous Lake spin-out Update on the Legal Status of the Mitchell Treaty Tunnels The Gold Market: Waiting for Hormuz Financial Results During the first quarter of 2026, Seabridge posted a net loss of $6.6 million ($0.06 per share) compared to a net profit of $10.6 million ($0.11 per share) for the same period in 2025. The first quarter of 2026 loss compared to the same period of 2025 was largely driven by non-cash revaluation movements on the Company's secured notes and higher corporate and administrative expenses partially offset by a non-cash revaluation gain on our investment in Paramount Gold. During the first quarter of 2026, Seabridge invested $22.3 million in mineral interests, property and equipment compared to $14.3 million invested in the first quarter of 2025 due to increased activity at our KSM Project. Seabridge's working capital position at March 31, 2026 improved by $21.5 million to $131.3 million, compared to $109.8 million on December 31, 2025 as we raised $35.8 million, net of fees, through our ATM program. About Seabridge Gold Seabridge Gold holds a 100% interest in several North American gold projects. Its principal assets are the KSM and Bronson Corridor projects in British Columbia's Golden Triangle. Additional projects include Courageous Lake in the Northwest Territories, Snowstorm in Nevada's Getchell Gold Belt, and the 3 Aces project in the Yukon. Further information on Seabridge's mineral reserves and resources is available at www.seabridgegold.com. None of the Toronto Stock Exchange, New York Stock Exchange, or their Regulation Services Providers accepts responsibility for the adequacy or accuracy of this release. ON BEHALF OF THE BOARD "Rudi Fronk" Chair and C.E.O. For further information, please contact: Rudi P. Fronk, Chair and C.E.O. Tel: (416) 367-9292 • Fax: (416) 367-2711 Email: [email protected] To view the source version of this press release, please visit https://www.newsfilecorp.com/release/297394

Vancouver, British Columbia--(Newsfile Corp. - April 8, 2026) - Goldstorm Metals Corp. (TSXV: GSTM) (FSE: B2U) ("Goldstorm" or the "Company") is pleased to announce that the Company has engaged Fathom Geophysics to conduct an independent review of the results of the 2025 geophysical programs, including both Induced Polarization (IP) and Magnetotelluric (MT) surveys completed over the Copernicus Zone at its 100% owned Crown Property (the "Property). The Copernicus Zone hosts very prospective drill targets within an area measuring approximately 1.2 kilometres north-south by 800 metres (m) east-west, centrally located on the roughly 16,000-hectare Crown Property. The property is strategically located in the Golden Triangle of British Columbia, immediately south of Seabridge Gold's KSM Project and Newmont's Brucejack Mine. Click to view: Crown location map. Daniel Core of Fathom Geophysics commented on the results of his analysis: "The geophysical data at Copernicus indicate the area has potential for porphyry copper mineralization. The area hosts a 700 m x 400 m chargeability anomaly in relatively resistive rocks on the three westernmost lines, and the anomaly remains open to the west. The magnetic data show that the area is structurally complex at the intersection of NW and NE-trending features, and the IP results indicate a potential buried intrusion on the west side of the IP survey area. A 500-m-long chargeability anomaly on the most eastern line, that is coincident with a magnetic structure, suggests that a second system may be present." Ken Konkin, P. Geo., President and CEO, stated: "We are pleased to announce the first five proposed drill holes of Phase 1 at the Crown Project. We plan to launch the first set of three HQ and NQ2 drill holes targeting the Copernicus and Orion Spine Porphyry targets as our highest priority (see Figure 1). The holes may be drilled to depths of as much as 800 m to test the extent of the IP chargeability anomalies, and will be wide-spaced in order to fast-track the strongest looking mineralized areas (see Figure 2). In addition to drilling at Orion Spine, we plan to drill the Delta West target, discovered by our reconnaissance crew last season, where a grab sample yielded over 39 g/t gold from a shear hosted quartz vein containing fine-grained pyrite. As well, samples from numerous sub-parallel structures over a 500 m x 800 m gossanous area returned significant gold values. Delta West is located ten kilometers directly south of the Valley of the Kings Gold Deposit at the Brucejack Mine. All proposed drill holes have been plotted on various types of enhanced images that highlight the IP chargeability and geological interpretations completed by our field crews. We have utilized high-resolution WorldView-3 Multispectral Images obtained at the end of the 2025 field season that demonstrate various types of alteration and iron oxidation associated with various styles of mineralization and their associated alteration assemblages (Figure 3). These images have greatly enhanced our geological interpretations and aided in drill targeting. The re-interpretation of all geophysical data also supports the 'Thrust Fault Model' extending southward beyond the Treaty Creek and KSM Deposit models as shown in the cross section below (Figure 2)." Figure 1. Plan Map - Copernicus Zone and Delta West Drill Targets To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/9214/291589_22b09410249719a3_002full.jpg Figure 2. Cross Section - Copernicus Zone Planned Drill Holes To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/9214/291589_22b09410249719a3_003full.jpg Mr. Konkin Continued: "We thank Mr. Daniel Core for a comprehensive and detailed "next level" analysis of the magnetic and IP data we collected. His interpretation of the historical magnetic data reinforced our understanding of the structural complexity of this part of the Crown claims. The added information has allowed our technical team to plan drill hole orientations and depths that will sufficiently test each intended target. We expect to drill approximately 3,000 meters in the first five holes of our Phase 1 Program. Contingent on results of the preliminary work, a Phase 2 program may include up to an additional 6,000 m of drilling. Figure 3. Plan Map - Copernicus Zone and Delta West Drill Targets & Multispectral SWIR Imagery To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/9214/291589_22b09410249719a3_004full.jpg Lastly, I am particularly pleased to welcome the addition of the well-known and respected geologist, Joel Ashburner to our team at Goldstorm. I have had the great fortune of working with Joel for several years at Brucejack Lake during the discovery of the Valley of the Kings deposit. We will benefit from his vast and intimate first-hand knowledge and experience of the geology and mineralization throughout the Golden Triangle. Today our geological team has become much stronger!" Appointment of Joel Ashburner Goldstorm Metals is pleased to announce the appointment of Joel Ashburner as Chief Geologist. Mr. Ashburner brings over 15 years of experience in the mineral exploration industry and has worked across the full project lifecycle, from grassroots target generation, through advanced exploration, to operating mines. In more recent roles, he has led multi-disciplinary teams focused on mine-outskirt and brownfields exploration at the Brucejack Project in northwest British Columbia, contributing to significant resource growth and mine life extension. Earlier in his career, he was part of the team responsible for the discovery of the Valley of the Kings deposit and later played a key role in the discovery and delineation of the Golden Marmot deposit. He was also instrumental in the discovery and advancement of new resources at Brucejack, contributing to the addition of more than 4 million ounces of gold to the mineral resource. Mr. Ashburner's experience spans projects across British Columbia, Yukon, Ontario and Australia. Qualified Person The Qualified Person for this news release for the purposes of National Instrument 43-101 is the Company's President and CEO, Ken Konkin, P.Geo. He has read and approved the scientific and technical information that forms the basis for the disclosure contained in this news release. QA/QC All samples were prepared at MSA Labs' Preparation Laboratory in Terrace, BC and assayed at MSA Labs' Geochemical Laboratory in Langley, BC. Gold was assayed using a fire assay with atomic absorption (AA) spectrometry finish. Samples over 10 ppm gold were fire assayed with gravimetric finish. All samples were analyzed by four acid digestion with multi-element ICP-MS, with silver and base metal over-limits being reanalyzed by emission spectrometry. MSA Laboratories quality system complies with the requirements for the International Standards ISO 17025 and ISO 9001. MSA Labs is independent of the Company. About Goldstorm Metals Goldstorm Metals Corp. is a precious and base metals exploration company with a large strategic land position in the Golden Triangle of British Columbia, an area that hosts some of the largest and highest-grade gold deposits in the world. Goldstorm's flagship projects, Crown and Electrum, cover an area that totals 16,469 hectares over 6 concessions, of which 5 are contiguous. The Crown Project is situated directly south of Seabridge Gold's KSM gold-copper deposits and Newmont Corporation's Brucejack/Valley of the Kings gold mine. Electrum, also located in the Golden Triangle of BC, is situated directly between Newmont Corporation's Brucejack Mine, approximately 20 kilometers to the north, and the past producing Silbak Premier mine, 20 kilometers to the south. ON BEHALF OF THE BOARD OF DIRECTORS OF GOLDSTORM METALS CORP. "Ken Konkin" Ken Konkin President and Chief Executive Officer For further information, please visit the Company's website at https://goldstormmetals.com/or contact: Chris Curran VP Investor Relations and Corporate Communications Phone: (604) 559-8092 E-Mail: [email protected] Neither 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. Cautionary Statement Regarding 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, the statement regarding the expectation that geologists are expected to complete a compilation study this winter once all assay results are received. Such a statement is a forward-looking statement and contains 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", "would" or "occur". Forward-looking statements are based on certain material assumptions and analysis made by Goldstorm and the opinions and estimates of management as of the date of this press release, including that geologists will complete a compilation study this winter once all assay results are received. 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 Goldstorm to be materially different from those expressed or implied by such forward-looking statements or forward-looking information. Important factors that may cause actual results to vary, include, without limitation that geologists will not complete a compilation study this winter or at all. Although management of Goldstorm 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. Goldstorm does not undertake to update any forward-looking statement, forward-looking information or financial out-look that are incorporated by reference herein, except in accordance with applicable securities laws. To view the source version of this press release, please visit https://www.newsfilecorp.com/release/291589

Vancouver, British Columbia--(Newsfile Corp. - March 16, 2026) - ArcWest Exploration Inc. (TSXV: AWX) ("ArcWest") announces results from a drill program funded by Freeport-McMoRan Mineral Properties Canada Inc. ("Freeport"), as per the March 2023 Todd Creek Earn-In Agreement, on its wholly owned Todd Creek Copper ("Cu") - Gold ("Au") Project in British Columbia's Golden Triangle. ArcWest's 100% owned, 21,700-hectare Todd Creek Cu-Au project adjoins Newmont Corporation's Brucejack Gold Mine property, one of the highest-grade operating gold mines in the world, and is located approximately 40 kilometres ("km") southeast of Seabridge Gold's KSM-Iron Cap Cu-Au deposits, which is one of the largest Au-Cu concentrations in North America (Fig. 1). A total of 4,614 metres ("m") of drilling in nine widely spaced drill holes was completed on the Todd Creek project in 2025 (Fig. 2). Funding for the program was 100% provided by Freeport as part of the March 2023 Todd Creek Earn-In Agreement, by which Freeport may earn a 51% interest in the Todd Creek project by spending C$20M over a five-year period and making staged cash payments to ArcWest. A link to the updated Todd Creek technical presentation is here. During the 2025 season, the 13 km long Todd Creek Alteration Corridor ("TCAC") was tested with 9 diamond drill holes (4,614 m) (Fig. 2) marking the first drill program completed on the project since commencement of the March 2023 Todd Creek Earn-In Agreement with Freeport. It comprised a reconnaissance-scale drill program across a district-scale alteration system. Five widely separated Cu-Au target areas were tested-Francisco Zone (1 hole, 393 m), South Zone (1 hole, 498 m), Yellow Bowl (1 hole, 599 m), Ice Creek/Fall Creek (4 holes, 1,899 m), and Orange Mountain (2 holes, 1,193 m). Copper-gold mineralization with corresponding strongly anomalous arsenic ("As"), antimony ("Sb"), bismuth ("Bi") and tellurium ("Te") was intersected in multiple target areas, including zones exhibiting veining styles commonly associated with porphyry systems, supporting the possibility of multiple mineralizing centres within the corridor. Eight out of nine drill holes intersected broad intervals of moderate to strong hydrothermal alteration with high proportions of disseminated pyrite. Three holes over a 4 km2 area intersected altered porphyritic intrusions. Highlights: Drill hole TDC25-02 demonstrates vertical zonation at Orange Mountain, with shallow epithermal-style veins transitioning into deeper porphyry-style Cu-bearing vein sets within a broad QSP-altered volcanic package. The upper portion of the hole contains abundant colloform-banded quartz-barite-carbonate-sulfide veins with elevated silver ("Ag"), lead ("Pb"), zinc ("Zn"), antimony geochemistry typical of epithermal mineralization. At depth, porphyry-style quartz-hematite-pyrite-chalcopyriteﾱmolybdenite veins occur within the altered volcanic host, and discrete sheeted chalcopyrite veins are hosted by suspected leucite-porphyritic volcanic rocks (Fig. 3). A historical drill hole collared upslope intersected banded quartz-magnetite-sulfide centre-line veins within similarly quartz-sericite-pyrite ("QSP") altered rocks (Fig. 4). Together, the distribution of epithermal and porphyry-style vein sets, the associated QSP alteration, and the presence of leucite-bearing volcanic rocks are consistent with a high-level expression of a porphyry Cu-Au system at depth that may have alkalic affinities. Induced polarization ("IP") geophysical surveys have not yet been completed over the Orange Mountain target area, and the overall geometry and extent of the sulfide system remain poorly constrained. Drill hole TDC25-09 intersected Cu-Au-As-bearing sulfide mineralization beneath the Orange Mountain gossan in a previously undrilled area. The hole, located approximately 660 m south of TDC25-02 and 330 m lower in elevation (Fig. 4), targeted a magnetotelluric ("MT") anomaly and intersected semi-massive to massive pyrite-chalcopyrite mineralization and quartz-sulfide veining hosted by intensely QSP-altered volcanic rocks (Fig. 5). The presence of significant sulfide mineralization confirms that Cu-Au mineralization extends beneath the gossan into an area untested by historical drilling. The vertical and lateral extent of this newly discovered sulfide system remains open. Drilling at Ice/Fall Creek intersected sulfide-rich alteration adjacent to a modeled resistivity anomaly, supporting the prospectivity of an untested geophysical target. Drill holes TC25-03 and TC25-05 intersected quartz-sericite-pyrite-altered volcanic rocks with locally intense alteration and high sulfide contents (Fig. 6). TC25-05 intersected Cu-Au mineralization associated with quartz-pyrite-chalcopyrite veins and breccias but did not intersect the projected downdip extension of high-grade Au-Cu mineralization sampled at surface in 2023 (262 grams per tonne ("g/t") Au and 2.46% Cu, sample L615119**). The 2025 drill holes did not test the most intense portions of adjacent modeled chargeability and resistivity anomalies that underlie the Ice/Fall Creek area (Fig. 7). However, TC25-03 was drilled just outside the margin of a <250 ohm-m resistivity low, where the hole intersected intervals with very high sulfide contents and strongly anomalous Au, Bi, Te, and selenium ("Se") concentrations. These results suggest that the hole tested the outer halo of a potentially more strongly mineralized system associated with the untested core of the resistivity anomaly (Fig. 7). An underlying MT anomaly further indicates potential for continuation of the hydrothermal system at depth. Multiple, additional Cu-Au targets at Todd Creek remain untested by drilling: Quartz-hematite-chalcopyrite vein and breccia systems at South Zone and Fall Creek are host to the highest grade (Cu-Au) historical drill intercepts on the Todd Creek property to date, but remain largely untested for a porphyry source. Significant historical drill intercepts*** at both target areas include 3.6 g/t Au and 0.27% Cu over 29.75 m at South Zone (NTC88-19) and 3.47 g/t Au and 0.73% Cu over 31.85 m at Ice/Fall Creek (88-22). ArcWest interprets these mineralized vein systems as potentially representing epithermal expressions of nearby porphyry Cu-Au centres; however, exploration to date has focused primarily on the vein systems themselves rather than testing for associated porphyry Cu-Au centres. At South Zone, an area of intense advanced argillic alteration and brecciation associated with a strong underlying chargeability anomaly ("Acid Pit") occurs approximately 500 m west of the main vein system (Fig. 8). This target has never been drill-tested and represents a compelling porphyry exploration target. The Pyrophyllite Zone represents a large, mostly untested advanced-argillic alteration and associated quartz-pyrite stockwork system with characteristics consistent with a potential porphyry Cu-Au environment. At the south end of the property, advanced argillic alteration associated with the Pyrophyllite Zone and the recently identified Pyrophyllite South target defines a broad alteration system (Fig. 9). Within this system, the most pronounced quartz-pyrite stockwork development has been mapped along a roughly 800 m N-S by 300 m E-W corridor with sparse outcrop between Pyrophyllite South and the main zone. The combined zones are covered by post-mineral volcanic rocks to the west and by the Todd Creek glacier to the east, indicating that the system remains open for expansion in multiple directions. ArcWest interprets quartz-pyrite stockwork within the corridor as potential porphyry-style D veins overprinted by pyrophyllite, suggesting potential for an underlying or adjacent porphyry Cu-Au centre. Despite hosting the highest density of stockwork veining on the property and being situated only 2.5 km south of high-grade Cu-Au mineralization at South Zone, this large prospective target area has yet to undergo induced polarization or magnetotelluric geophysical surveys and has only been tested by a single historical drill hole. Tyler Ruks, President and CEO of ArcWest commented "ArcWest thanks Freeport for its continued guidance and support at Todd Creek. We have been extremely fortunate to work with Freeport's exploration team, which recently discovered the high grade Aurora Cu-Au porphyry system in BC's Toodoggone region. This first phase drill program at Todd Creek was successful in refining multiple Cu-Au targets on the property for follow-up exploration. The program was also successful in discovering a QSP associated Cu-Au-As bearing sulfide system beneath the Orange Mountain gossan; additional ground geophysics and drilling in 2026 is recommended in order to evaluate this exciting new discovery. The Todd Creek Alteration Corridor contains one of the largest and most underexplored Cu-Au systems in BC's Golden Triangle; the project contains multiple untested Cu-Au targets that are highly deserving of additional exploration. ArcWest looks forward to advancing the Todd Creek project in 2026." Table 1 Highlighted Geochemical Results - Todd Creek 2025 Drilling Table Notes: Geochemical highlights of the 2025 Todd Creek drill program include: At Yellow Bowl, drill hole TDC25-07 returned two multi-meter intersections grading >1% Cu, including 1.65% Cu and 27.1 g/t Ag over 3.27 m (157.47-160.74 m*) and 2.02% Cu, 11 g/t Ag and 0.07 g/t Au over 3 m (251.28-254.28 m*). These intervals occur within multi-phase brecciated quartz-sulfide veins containing semi- to massive-sulfide zones with generally high chalcopyrite-to-pyrite ratios and local epithermal textures, including bladed calcite replaced by pyrite (Fig. 10). These veins cut strongly chlorite-altered volcanic and sedimentary rocks that locally include massive-sulfide laminations with traces of chalcopyrite. Between 502.37 and 542.60 m, strongly chlorite-pyrite-altered mudstone is interbedded with bright red hematite, jasper, magnetite, and silica-pyrite layers (Fig. 11). These layers are interpreted to be exhalites formed by hydrothermal seafloor venting. These beds host anomalous Cu and Mo concentrations and very high sulfur ("S") (e.g. 12 m of 530 ppm Cu, 21.9 ppm Mo and >6.28% S between 502 and 514 m). Cross-cutting relationships suggest that Cu-Ag mineralized epithermal veins and VMS-like mineralization intersected in TDC25-07 are the result of separate mineralizing events. At Orange Mountain, multiple mineralization styles were intersected in drill holes TDC25-02 and TDC25-09, which were collared 660 m apart horizontally and 330 m apart in elevation: In TC25-02, colloform-banded epithermal quartz-barite-siderite-sulfide veins with elevated Ag-Pb-Zn values (e.g., 8.53 m of 9.4 g/t Ag, 0.12% Pb and 0.10% Zn between 7.2- 5.73 m*) were intersected from surface to a depth of 313 m (Fig. 3). TDC25-02 also contains six 3.00 - 4.37 m thick intersections grading >0.1% Cu with elevated Au values, including 3.0 m of 0.13% Cu and 0.965 g/t Au between 311 and 314 m*. These intervals occur within a broad zone of pyrite-rich, phyllic-altered volcanic rock (with local, suspected leucite phenocrysts) and are associated with coarse chalcopyrite veins and include local banded quartz-chalcopyrite-hematite-chlorite veins characteristic of porphyry systems (Fig. 3). Drill hole TDC25-09, which is a large (660 m) stepout from TDC25-02, cut approximately 97 m (525 - 622 m) of strongly to intensely phyllic altered volcanic rock with significant zones of Au, Ag, Cu, Zn and As including semi-massive to massive sulfides (e.g. 8 m of 907 ppm Cu, 0.48 g/t Au, 2.1 g/t Ag and 0.28% As from 531-539 m*) (Fig. 5). At Fall Creek, drill hole TDC25-04 (Fig. 7) intersected 1.85 g/t Au and 0.11% Cu over 2.65 m* (194.35-197.00 m) within 20 m* of 0.57 g/t Au and 0.055% Cu, hosted in mafic volcanic flows and tuffs cut by 1-3 per m quartz-calcite-chlorite-hematite-pyrite-chalcopyrite veins, similar to veins found in the historical Fall Creek "A" Zone located approximately 300 m to the northwest, which yielded 31.85 m of 3.47 g/t Au, and 0.73% Cu in drill hole 88-22***. At South Zone, drill hole TDC25-01 (Fig. 8), collared 350 m to the southwest of the main South Zone vein/breccia system, intersected 1.13 g/t Au over 9 m* (89-98 m) within 15 m* of 0.73 g/t Au plus anomalous Cu, As and Sb, hosted in a moderately quartz-sericite-pyrite-altered feldspar-hornblende porphyritic intrusion. The mineralization correlates with increased intensity and density of pyrite stringers with trace chalcopyrite and quartz-sericite-pyrite selvages (Fig. 12). These veins occur at lower density throughout the entire intersection of the porphyry intrusion from the collar to 401.50 m. The intrusion contains a broad antimony anomaly (17 ppm Sb between 71 and 275 m including 43 ppm Sb between 194-254 m) indicating that it was intersected at a high level within a broader hydrothermal system. Technical highlights of the 2025 Todd Creek drill program include: 2025 drilling expanded the known domains of alteration, anomalous indicator elements and pyrite mineralization to greater depths, improving three-dimensional definition of the TCAC. The intensity of alteration is supported by drill core observations, observed and modeled pyrite content (from sulfur geochemical data), and white mica crystallinity derived from hyperspectral analysis (Table 2). Length-weighted modeled pyrite content for entire holes ranges from 0.94% to 8.59% in all holes except TDC25-06. Sub-intervals approximately 10-50 m thick in most drill holes (TDC25-02, -03, -05, -07 and -09) contain modeled pyrite contents greater than 10%. The high pyrite content correlates well with modeled chargeability domains and demonstrates widespread and pervasive hydrothermal alteration associated with sulfur- and iron-rich magmatic-hydrothermal fluids, with the frequent presence of hypogene hematite indicating an oxidized system. Property-wide high crystallinity of secondary white mica further indicates a strong and high-temperature hydrothermal system. In addition, widespread elevated As, Sb, Bi and Te concentrations suggest that many drill intersections represent high-level or shallow expressions of mineralization that may be linked to deeper intrusions and potential ore bodies. Definitive identification of altered and weakly mineralized feldspar-hornblende porphyritic monzonite intrusions at South Zone, Yellow Bowl, and Francisco Zone covering a large 4 km2 area. ArcWest's exploration over the past three years has focused on identifying and targeting porphyry-style mineralization along the TCAC, and recognition of high-level altered and mineralized porphyritic intrusions represents a key criterion for exploration of this deposit type. Table 2 Whole-hole geochemical and hyperspectral data; 2025 Todd Creek Drilling Table Notes: Advances in Target Evaluation and Exploration Vectoring Integrated analysis of the 2025 drill dataset and historical data highlights three high-priority, largely untested target areas. ArcWest remains highly encouraged by the potential for the Todd Creek Project to host a copper-gold mineral deposit. The 2025 Phase 1 drill program tested widely across the 13 km long Todd Creek Alteration Corridor and, in addition to intersecting local domains with significant base- and precious-metal endowment, encountered strong alteration, high proportions of pyrite, high-crystallinity secondary mica, veining, and anomalous tracer elements in eight of nine drill holes, many of which displayed these features continuously from collar to end of hole (to depths of approximately 500 m). The character of the intersected rocks is prospective for porphyry, VMS, and epithermal-style mineral systems, and ArcWest is encouraged to continue evaluating the potential for ore bodies that may be associated with these broad zones of alteration and mineralization. The 2025 drill program did not test any one area at sufficient density to constitute a thorough assessment for an ore body, and several of the most compelling targets on the property remain untested. Table 3 Todd Creek 2025 Drill Hole Location and Orientation Data Table Notes: ArcWest's corporate and project specific technical presentations are available for download from www.arcwestexploration.com. Cautionary Notes * Drill Intersections: Intervals reported in this news release represent drill lengths. True widths of the mineralized intervals are not known. ** Grab Samples: Grab samples are selective by nature and are not necessarily representative of mineralization on the Todd Creek property. *** Historical Results: Historical drill intercepts and assay results reported in this news release have not been verified by ArcWest Exploration Inc. and should not be relied upon. Such information is considered historical in nature and is provided for context only. True widths of historical intercepts are unknown. Quality Control ArcWest drilled HQ (63.5 mm) and NQ (47.6 mm) sized core on the Todd Creek 2025 program. All drill core was logged, photographed and cut in half with a diamond saw at ArcWest's core facility near Meziadin Junction along Highway 37 in northwestern BC. Samples were typically 3 metres long but in areas of interest sample sizes were reduced. Half core samples were transported directly from the core facility to ALS Canada Ltd. preparation laboratory in Terrace BC in security sealed mega bags. Sample pulps were shipped by ALS from the preparation facility to the ALS geochemical laboratory in North Vancouver. Both labs are ISO/IEC 17025:2017 accredited. At the laboratory, the samples were dried, crushed and pulverized using standard rock preparation procedures. Each sample was crushed to 70% passing 2 mm, a riffle split 250 g was pulverized to better than 85% passing 75 microns (ALS Code PREP31). The pulps were then analyzed for Au using a 30 g fire assay with ICP-AES finish (ALS Code Au-ICP-21). An additional 60 elements were tested with a four-acid digestion, multi-element ICP-MS package (ALS code ME-MS61). Quality control at the laboratory is maintained by submitting blanks, standards and re-assaying duplicate samples from each analytical batch. ArcWest implemented an internal Quality Assurance/Quality Control program with the insertion of certified standards, duplicates and blanks at a ratio of greater than 1 per 10 samples. Qualified Person ArcWest's disclosure of a technical or scientific nature in this news release has been reviewed and approved by Tony Barresi, Ph.D., P.Geo., a Technical Advisor for ArcWest, who serves as a Qualified Person under the definition of National Instrument 43-101. About ArcWest Exploration Inc. ArcWest Exploration is a project generator focused on porphyry copper-gold exploration opportunities throughout western North America. The company is in possession of seven copper-gold projects throughout BC's premier porphyry copper-gold districts. These include ArcWest's Todd Creek and Oweegee Dome projects, which are two of the largest and most prospective land positions for copper-gold exploration in BC's prolific Golden Triangle. Oweegee Dome (jointly owned with Gold Strike Resources) neighbours Seabridge Gold's supergiant KSM-Iron Cap-Snowfield porphyry copper-gold deposit and Todd Creek (100% owned by ArcWest) adjoins Newmont's Brucejack mine property. Several ArcWest projects are currently being advanced through earn-in and joint venture agreements; this includes an agreement with mining giant Freeport-McMoRan to advance ArcWest's 100% owned Todd Creek copper-gold project. By conducting partner funded exploration on multiple exploration projects simultaneously, ArcWest's chances of discovery are enhanced while exposing shareholders to minimal dilution. The company is managed by an experienced technical team with a track record of discovery and a reputation for attracting well-funded senior partners, including Freeport-McMoRan, Robert Friedland group companies, ITOCHU, Antofagasta and Teck. For further information please contact: Tyler Ruks, President and CEO at +1 (604) 638 3695. Investors are cautioned that ArcWest Exploration Inc. has not verified the data from the KSM-Iron Cap, Brucejack, Treaty Creek, deposits. Further, the presence and style of mineralization on these properties is not necessarily indicative of similar mineralization on the ArcWest Exploration Inc. property. Historical assays from drill programs on its properties have not been verified by ArcWest but have been cited from sources believed to be reliable. Assay results reported by ArcWest in this news release range from trace amounts to the values stated. Drill intercepts reported here are not true widths. This news release contains statements about ArcWest's expectations and are forward-looking in nature. As a result, they are subject to certain risks and uncertainties. Although ArcWest believes that the expectations reflected in these forward-looking statements are reasonable, undue reliance should not be placed on them as actual results may differ materially from the forward-looking statements. The forward-looking statements contained in this news release are made as of the date hereof, and ArcWest undertakes no obligation to update publicly or revise any forward-looking statements or information, except as required by law. To view the source version of this press release, please visit https://www.newsfilecorp.com/release/288593

Toronto, Ontario--(Newsfile Corp. - March 2, 2026) - Seabridge Gold Inc. (TSX: SEA) (NYSE: SA) ("Seabridge") today announced robust results from its inaugural metallurgical test program on drill core samples from the Snip North Deposit, one of the targets on the 100% owned Iskut Gold-Copper Project in BC's Golden Triangle. The program confirms that Snip North mineralization responds very well to conventional flotation and excellent recoveries can be expected. Highlights A total of 10 drill-core interval samples and four composite samples from the Snip North deposit taken from the 2025 exploration program have been tested at ALS Metallurgy in Kamloops, BC, representing the first systematic metallurgical assessment of the Snip North deposit. The test procedures followed the flotation flow sheet established for Seabridge's KSM Project. Snip North metallurgy is similar to the Mitchell deposit. Locked cycle tests (LCTs) at a primary grind size of 80% passing approximately 130 µm summarized in Table 1 show copper-gold-molybdenum concentrates with grades ranging from 20% to 28% Copper and 83 g/t to 525 g/t gold from samples with head grades ranging from 0.04% to 0.26% Copper and 0.4 g/t to 1.21 g/t gold. Gold and copper recovery to the bulk flotation concentrate was excellent. Table 1: Snip North - Summary of Locked Cycle Flotation Test (LCT) Results on 2025 exploration samples Molybdenum recovery indicates that a separate molybdenum concentrate can also be produced. Copper and gold grades in the LCT concentrates are expected to increase further after molybdenum concentrate separation. Cyanide leaching completed on the first three pyritic concentrates from LCTs had excellent recoveries as shown in Table 2 with overall gold recoveries increasing to between 85.3% and 92.7%. Table 2: Leach Test Results with impacts to Overall Recoveries Initial bond work index tests results ranged from 9.9 to 11.9 kW-hr/tonne indicating that mineralization is generally soft and will be suitable for conventional SAB or SABC grinding circuits. These results confirm a robust metallurgical response to flotation and will support the development of a maiden resource statement for Snip North. Commenting on the study, Seabridge Chair and CEO Rudi Fronk said: "These robust metallurgical results from the Snip North maiden test program provide a strong foundation to support the upcoming maiden resource estimate." Qualified Persons Tracey Meintjes, P.Eng., a Qualified Person for the purposes of NI 43-101, has reviewed and approved the scientific and technical disclosure contained in this news release on behalf of Seabridge Gold. About Seabridge Gold Seabridge holds a 100% interest in several North American gold projects. Seabridge's principal asset, the KSM project, and its Iskut projects are located in Northwest British Columbia, Canada's "Golden Triangle", the Courageous Lake project is in Canada's Northwest Territories, the Snowstorm project in the Getchell Gold Belt of Northern Nevada and the 3 Aces project is in the Yukon Territory. For a full breakdown of Seabridge's Mineral Reserves and Mineral Resources by category please visit Seabridge's website at http://www.seabridgegold.com. Neither the Toronto Stock Exchange, New York Stock Exchange, nor their Regulation Services Providers accepts responsibility for the adequacy or accuracy of this release. Cautionary Note Regarding Forward-Looking Information This document contains "forward-looking information" within the meaning of Canadian securities legislation and "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995. This information and these statements, referred to herein as "forward-looking statements" are made as of the date of this document. Forward-looking statements relate to future events or future performance and reflect current estimates, predictions, expectations or beliefs regarding future events and include, but are not limited to, statements with respect to: (i) excellent recoveries can be expected from Snip North mineralization; (ii) the possibility that a separate molybdenum concentrate can also be produced and that copper and gold grades in the LCT concentrates are expected to increase further after molybdenum concentrate separation; (iii) the completion of a maiden resource estimate at Snip North and its timing. Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives or future events or performance (often, but not always, using words or phrases such as "expects", "anticipates", "plans", "projects", "estimates", "envisages", "assumes", "intends", "strategy", "goals", "objectives" or variations thereof or stating that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved, or the negative of any of these terms and similar expressions) are not statements of historical fact and may be forward-looking statements. All forward-looking statements are based on Seabridge's or its consultants' current beliefs as well as various assumptions made by them and information currently available to them. Assumptions include: (i) the consistency of the response across all of the mineralization at the Project to the test procedures; (ii) that the test procedures will yield similar results when used a production scale; and (iii) the effect that molybdenum concentrate separation will have on recovery of copper and gold will be consistent with analogues. Although management considers these assumptions to be reasonable based on information currently available to it, they may prove to be incorrect. By their very nature, forward-looking statements involve inherent risks and uncertainties, both general and specific, and risks exist that estimates, forecasts, projections and other forward-looking statements will not be achieved or that assumptions do not reflect future experience. We caution readers not to place undue reliance on these forward-looking statements as a number of important factors could cause the actual outcomes to differ materially from the beliefs, plans, objectives, expectations, anticipations, estimates assumptions and intentions expressed in such forward-looking statements. These risk factors may be generally stated as the risk that the assumptions and estimates expressed above do not occur as forecast, but specifically include, without limitation: risks relating to variations in the mineralization across the deposit and its response to metallurgical processes. Seabridge cautions that the foregoing list of factors that may affect future results is not exhaustive. When relying on our forward-looking statements to make decisions with respect to Seabridge, investors and others should carefully consider the foregoing factors and other uncertainties and potential events. Seabridge does not undertake to update any forward-looking statement, whether written or oral, that may be made from time to time by Seabridge or on our behalf, except as required by law. ON BEHALF OF THE BOARD "Rudi Fronk" Chair & C.E.O. For further information please contact: Rudi P. Fronk, Chair and C.E.O. Tel: (416) 367-9292 • Fax: (416) 367-2711 Email: [email protected] To view the source version of this press release, please visit https://www.newsfilecorp.com/release/285791