<div id="readability-page-1"><article>Toronto, Ontario--(Newsfile Corp. - December 22, 2025) - Mines D'Or Orbec Inc. (TSXV: BLUE) (OTC Pink: BLTMF) (&#34;Orbec&#34; or the &#34;Company&#34;) is pleased to announce the successful completion of the previously announced plan of arrangement under the Business Corporations Act (Ontario) with IAMGOLD Corporation (NYSE: IAG) (TSX: IMG) (&#34;IAMGOLD&#34;) (the &#34;Transaction&#34;).As a result of the completion of the Transaction, IAMGOLD acquired all of the issued and outstanding common shares in the capital of Orbec (each an &#34;Orbec Share&#34;) and Orbec became a wholly-owned subsidiary of IAMGOLD. Former shareholders of the Company (other than IAMGOLD) received a total consideration representing a value of C$0.125 per Orbec Share which consists of an aggregate of (i) 0.003466 of a common share of IAMGOLD, and (ii) C$0.0625 per each Orbec Share.In-the-money Options of Orbec (each an &#34;Orbec Option&#34;), whether vested or unvested, were deemed to be surrendered, assigned and transferred by such optionholder to the Company in exchange for a cash payment made by or on behalf of Orbec, equal to the difference between their exercise price and $0.125 multiplied by the number of Orbec Shares such Orbec Options entitle the holders thereof to purchase, and were immediately cancelled.In-the-money common share purchase warrants (each an &#34;Orbec Warrant&#34;) were also deemed to be surrendered, assigned and transferred by such warrantholder to the Company in exchange for a cash payment made by or on behalf of Orbec, equal to the difference between their exercise price and $0.125 multiplied by the number of Orbec Shares such Orbec Warrants entitle the holders thereof to purchase, with the exception of Orbec Warrants held by IAMGOLD which were deemed to be surrendered, assigned and transferred without any consideration, and were immediately cancelled. All out-of-the-money Orbec Options and out-of-the-money Orbec Warrants were deemed to be surrendered, assigned and transferred to the Company, and ultimately cancelled, without any payment therefor.The Orbec Shares will be delisted from the TSX Venture Exchange and removed from the OTC Pink Limited Market, and an application will be made for Orbec to cease to be a reporting issuer in the provinces of British Columbia, Alberta and Ontario.Further details regarding the Transaction can be found in the Company's management information circular dated November 10, 2025, which is filed under the Company's issuer profile on SEDAR+ at www.sedarplus.ca.About Mines D'Or Orbec Inc.Mines D'Or Orbec Inc. is a gold company that owns 100% of a large and highly prospective mineral claim position near Chibougamau, Québec. The Muus Project covers approximately 25,250 hectares in the northeastern part of the Abitibi Greenstone Belt. Muus is prospective for gold mineralization and is adjacent to and on strike with IAMGOLD's Nelligan Gold Project. Orbec has announced that exploration of the Muus Gold Project will advance in technical collaboration with IAMGOLD, which owned approximately 9.9% of the Company immediately prior to the completion of the Transaction. Field work completed during 2022 established that the northern portion of the Muus Gold Project is also prospective for copper-gold volcanogenic massive sulphide mineralization, as well as confirming that it is prospective for high-grade gold mineralization similar to IAMGOLD's nearby Nelligan gold discovery.Neither the TSX Venture Exchange (&#34;TSXV&#34;) nor its Regulations Services Provider (as that term is defined in policies of the TSXV) accepts responsibility for the adequacy or accuracy of this release. Cautionary Statement Regarding Forward-Looking InformationThis news release contains &#34;forward-looking information&#34; and &#34;forward-looking statements&#34; (collectively, &#34;forward-looking statements&#34;) within the meaning of the applicable Canadian securities legislation. All statements, other than statements of historical fact, are forward-looking statements and are based on expectations, estimates and projections as at the date of this news release. Any statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as &#34;expects&#34;, or &#34;does not expect&#34;, &#34;is expected&#34;, &#34;anticipates&#34; or &#34;does not anticipate&#34;, &#34;plans&#34;, &#34;budget&#34;, &#34;scheduled&#34;, &#34;forecasts&#34;, &#34;estimates&#34;, &#34;believes&#34; or &#34;intends&#34; or variations of such words and phrases or stating that certain actions, events or results &#34;may&#34; or &#34;could&#34;, &#34;would&#34;, &#34;might&#34; or &#34;will&#34; be taken to occur or be achieved) are not statements of historical fact and may be forward-looking statements. In this news release, forward-looking statements relate, among other things, to statements regarding the anticipated timing of the delisting and removal, as applicable, of the Company's shares from the TSX Venture Exchange and the OTC Pink Limited Market, as well as the timing the Company will cease to be a reporting issuer in the provinces of British Columbia, Alberta and Ontario.These forward-looking statements are based on reasonable assumptions and estimates of management of the Company at the time such statements were made. Actual future results may differ materially as forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to materially differ from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors, among other things, include: fluctuations in general macroeconomic conditions; fluctuations in securities markets; fluctuations in spot and forward prices of gold, silver, base metals or certain other commodities; fluctuations in currency markets (such as the Canadian dollar to United States dollar exchange rate); change in national and local government, legislation, taxation, controls, regulations and political or economic developments; risks and hazards associated with the business of mineral exploration, development and mining (including environmental hazards, industrial accidents, unusual or unexpected formations pressures, cave-ins and flooding); inability to obtain adequate insurance to cover risks and hazards; the presence of laws and regulations that may impose restrictions on mining; employee relations; relationships with and claims by local communities and indigenous populations; availability of increasing costs associated with mining inputs and labour; the speculative nature of mineral exploration and development (including the risks of obtaining necessary licenses, permits and approvals from government authorities); and title to properties. Although the forward-looking statements contained in this news release are based upon what management of the Company believes, or believed at the time, to be reasonable assumptions, the Company cannot assure shareholders that actual results will be consistent with such forward-looking statements, as there may be other factors that cause results not to be as anticipated, estimated or intended. Readers should not place undue reliance on the forward-looking statements and information contained in this news release. The Company assumes no obligation to update the forward-looking statements of beliefs, opinions, projections, or other factors, should they change, except as required by law.<img id="corporateNewsLogo" src="https://imageproxy.pbkrs.com/https://images.newsfilecorp.com/files/6951/278836_15525055c4ec4968_logo.jpg?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="200" height="48" original-src="https://imageproxy.pbkrs.com/https://images.newsfilecorp.com/files/6951/278836_15525055c4ec4968_logo.jpg"/>To view the source version of this press release, please visit https://www.newsfilecorp.com/release/278836<img src="https://imageproxy.pbkrs.com/https://api.newsfilecorp.com/newsinfo/278836/375?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="1" height="1" original-src="https://imageproxy.pbkrs.com/https://api.newsfilecorp.com/newsinfo/278836/375"/></article></div>

IAMGOLD Corporation has completed the acquisition of Mines D'Or Orbec Inc., making Orbec a wholly-owned subsidiary. Former Orbec shareholders received compensation of C$0.125 per share, including IAMGOLD shares and cash. Orbec's shares will be delisted from TSX Venture Exchange and OTC Pink Market, and it will cease to be a reporting issuer in certain provinces. The Muus Gold Project will advance with IAMGOLD's collaboration. Forward-looking statements caution about future uncertainties.

IAMGOLD Corporation Completes Acquisition of Mines D'Or Orbec Inc. | BLTMF Stock News