CXB Calibre Mining Corp

Calibre Mining Corp. (TSX: CXB; OTCQX: CXBMF) (“Calibre” or the “Company”) is pleased to announce that its common shares will be added to the S&P/TSX Composite Index effective at the open of trading on the Toronto Stock Exchange (the “TSX”) on June 24, 2024.

Darren Hall, President and Chief Executive Officer of Calibre, stated: “Our addition to the benchmark S&P/TSX Composite Index is another proud milestone for Calibre and reflects the significant value we are creating for shareholders as we successfully grow the Company. We look forward to the increased exposure, broader range of potential investors, enhanced liquidity and trading flexibility that inclusion in the S&P/TSX Composite Index can provide as we execute on our strategy to continue to drive long-term value for our shareholders.”

About S&P/TSX Composite IndexThe S&P/TSX Composite Index is the headline index for the Canadian equity market, the broadest in the S&P/TSX family and is the basis for multiple sub-indices, including the S&P/TSX Global Mining Index. The S&P/TSX Composite Index includes the largest and most liquid companies on the Toronto Stock Exchange. Inclusion in the S&P/TSX Composite Index can potentially broaden participation in a Company’s investor base by enabling investment from index funds and similar investment vehicles.

About CalibreCalibre is a Canadian-listed, Americas focused, growing mid-tier gold producer with a strong pipeline of development and exploration opportunities across Newfoundland & Labrador in Canada, Nevada and Washington in the USA, and Nicaragua. Calibre is focused on delivering sustainable value for shareholders, local communities and all stakeholders through responsible operations and a disciplined approach to growth. With a strong balance sheet, a proven management team, strong operating cash flow, accretive development projects and district-scale exploration opportunities, Calibre will unlock significant value.

ON BEHALF OF THE BOARD

“Darren Hall”

Darren Hall, President & Chief Executive Officer

For further information, please contact:

Ryan KingSVP Corporate Development & IRT: 604.628.1012E: calibre@calibremining.comW: www.calibremining.com

Calibre’s head office is located at Suite 1560, 200 Burrard St., Vancouver, British Columbia, V6C 3L6.

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The Toronto Stock Exchange has neither reviewed nor accepts responsibility for the adequacy or accuracy of this news release.

Cautionary Note Regarding Forward Looking Information

This news release includes certain “forward-looking information” and “forward-looking statements” (collectively “forward-looking statements”) within the meaning of applicable Canadian securities legislation, including statements regarding the plans, intentions, beliefs and current expectations of Calibre with respect to future business activities and operating performance. All statements in this news release that address events or developments that Calibre expects to occur in the future are forward-looking statements. Forward-looking statements are statements that are not historical facts and are often identified by words such as "expect", "plan", "anticipate", "project", "target", "potential", "schedule", "forecast", "budget", "estimate", "intend" or "believe" and similar expressions or their negative connotations, or that events or conditions "will", "would", "may", "could", "should" or "might" occur. For a listing of risk factors applicable to the Company, please refer to Calibre's annual information form for the year ended December 31, 2023, and its management discussion and analysis for the year ended December 31, 2023, all available on the Company’s SEDAR+ profile at www.sedarplus.ca. This list is not exhaustive of the factors that may affect Calibre's forward-looking statements such as potential sanctions implemented as a result of the United States Executive Order 13851 dated October 24, 2022.

Calibre’s forward-looking statements are based on the applicable assumptions and factors management considers reasonable as of the date hereof, based on the information available to management of Calibre at such time. Calibre does not assume any obligation to update forward-looking statements if circumstances or management’s beliefs, expectations or opinions should change other than as required by applicable securities laws. There can be no assurance that forward-looking statements will prove to be accurate, and actual results, performance or achievements could differ materially from those expressed in, or implied by, these forward-looking statements. Accordingly, undue reliance should not be placed on forward-looking statements.