Toronto, Ontario – October 17, 2024 – Osisko Mining Inc. (“Osisko“) (TSX:OSK) is pleased to announce that shareholders of Osisko (“Shareholders“) overwhelmingly approved the Arrangement Resolution (as defined herein) at the special meeting of Shareholders (the “Meeting“) held earlier today at the Offices of Bennett Jones LLP.

The Meeting was called for Shareholders to consider and, if deemed advisable, approve the previously-announced plan of arrangement of Osisko (the “Plan of Arrangement“), pursuant to which Gold Fields Limited, through a 100% owned Canadian subsidiary (the “Purchaser” or “Gold Fields“), would, among other things, acquire all of the issued and outstanding common shares of Osisko (“Osisko Shares“) for cash consideration of C$4.90 per Osisko Share.

A total of 241,670,665 Osisko Shares were represented at the Meeting, in person or by proxy, representing approximately 63.31% of the total number of issued and outstanding Osisko Shares outstanding as of the record date for the Meeting.

The resolution approving the Plan of Arrangement (the “Arrangement Resolution“) was overwhelmingly approved at the Meeting by (i) 99.546% of the votes cast by Shareholders voting in person or represented by proxy at the Meeting, and (ii) 99.539% of the votes cast by the minority Shareholders voting in person or represented by proxy at the Meeting, excluding the Osisko Shares required to be excluded pursuant to Multilateral Instrument 61-101 – Protection of Minority Security Holders in Special Transactions (“MI 61-101“).

To be effective, the Arrangement Resolution required the affirmative vote of at least (i) two-thirds of the votes cast by the Shareholders, present or represented by proxy at the Meeting, and (ii) a simple majority of the votes cast by the minority Shareholders, present or represented by proxy at the Meeting, excluding the Osisko Shares required to be excluded pursuant to MI 61-101 (being the Osisko Shares held by Mr. Vizquerra-Benavides). Accordingly, all shareholder approvals required in order to proceed with the Plan of Arrangement have been obtained.

The Plan of Arrangement is expected to become effective on or about October 25, 2024, subject to, among other things, Osisko obtaining a Final Order from the Ontario Superior Court of Justice (Commercial List) in respect of the Plan of Arrangement and the satisfaction or waiver of certain other customary closing conditions. It is expected that, within two to three business days following the completion of the Plan of Arrangement, the Osisko Shares will be delisted from the Toronto Stock Exchange.

Additional details of the voting results will be included in a report of voting results to be filed on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile. Additional details about the Plan of Arrangement and the Arrangement Resolution can be found in the management information circular of Osisko dated September 6, 2024, a copy of which is available on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile.

About Osisko

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 50% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 50% interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,300 square kilometers).

Cautionary Statement Regarding Forward-Looking Statements

This news release may contain forward-looking statements (within the meaning of applicable securities laws) which reflect Osisko’s current expectations regarding future events. Forward-looking statements are identified by words such as “believe”, “anticipate”, “project”, “expect”, “intend”, “plan”, “will”, “may”, “estimate” and other similar expressions. The forward-looking statements in this news release include statements regarding the proposed acquisition by Gold Fields of all of the Osisko Shares and the terms thereof, the expected date of completion of the Arrangement, the delisting of the Osisko Shares from the Toronto Stock Exchange and the timing thereof, the receipt of all required regulatory approvals and other statements that are not historical fact. The forward-looking statements in this news release are based on a number of key expectations and assumptions made by Osisko including, without limitation: the Arrangement will be completed on the terms currently contemplated; the Arrangement will be completed in accordance with the timing currently expected; and all conditions to the completion of the Arrangement will be satisfied or waived. Although the forward-looking statements contained in this news release are based on what Osisko’s management believes to be reasonable assumptions, Osisko cannot assure investors that actual results will be consistent with such statements. The forward-looking statements in this news release are not guarantees of future performance and involve risks and uncertainties that are difficult to control or predict. Several factors could cause actual results to differ materially from the results discussed in the forward-looking statements. Such factors include, among others: the Arrangement not being completed in accordance with the terms currently contemplated or the timing currently expected, or at all; expenses incurred by Osisko in connection with the Arrangement that must be paid by Osisko in whole or in part regardless of whether or not the Arrangement is completed; the conditions to the Arrangement not being satisfied by Osisko and Gold Fields; currency fluctuations; disruptions or changes in the credit or security markets; results of operations; and general developments, market and industry conditions. Additional factors are identified in Osisko’s annual information form for the year ended December 31, 2023, the most recent Management’s Discussion and Analysis, and in the management information circular of Osisko dated September 6, 2024 each of which is available on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile. Readers, therefore, should not place undue reliance on any such forward-looking statements. There can be no assurance that the Arrangement will be completed or that it will be completed on the terms and conditions contemplated in this news release. The proposed Arrangement could be modified or terminated in accordance with its terms. Further, these forward-looking statements are made as of the date of this news release and, except as expressly required by applicable law, Osisko assumes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

Contact Information

John Burzynski

Chairman & Chief Executive Officer

Telephone (416) 363-8563

TORONTO, ONTARIO – October 9, 2024 – Osisko Mining Inc. (“Osisko“) (TSX:OSK) announces that Northern Star Resources Limited (“Northern Star“) has elected to convert its $154 million of convertible senior unsecured debenture due December 1, 2025 (the “Debentures“) for 38,500,000 common shares of Osisko (the “Shares“) at a price of $4.00 per Share.

Northern Star has elected to convert the Debenture for Shares to participate in the Arrangement (as defined herein) as a shareholder of Osisko. The Arrangement was previously announced on August 12, 2024, pursuant to which, among other things, Gold Fields Holdings Company Limited, through a 100% owned Canadian subsidiary, Gold Fields Windfall Holdings Inc. (“Gold Fields“), agreed to acquire all of the issued and outstanding Shares of Osisko (the “Arrangement“).

The Shares issued to Northern Star upon the conversion of the Debentures were issued subsequent to the record date for the Special Meeting (as defined herein) and are therefore not eligible to vote on the Arrangement at the Special Meeting.

Special Meeting to Approve Arrangement

Osisko has called a special meeting of its shareholders (the “Special Meeting“), scheduled to be held on October 17, 2024 at 10:00 a.m. (Toronto time), where shareholders of Osisko will be asked to vote on the Arrangement.

Under the terms of the Arrangement, each shareholder will be entitled to receive C$4.90 (the “Consideration“) per Share upon completion of the Arrangement. The Consideration represents an approximate 55% premium to the 20‐day volume weighted average trading price per Share on the Toronto Stock Exchange for the period ending August 9, 2024, being the last trading day prior to the announcement of the Arrangement.

On the unanimous recommendation of the Special Committee, the Board of Directors of Osisko unanimously recommends that Shareholders vote FOR the Arrangement.

YOUR VOTE IS IMPORTANT – PLEASE VOTE TODAY

The proxy voting deadline is 10:00 a.m. (Toronto time) on Tuesday, October 15, 2024.

Special Meeting Details

The Special Meeting is scheduled to be held on Thursday, October 17, 2024 at 10:00 a.m. (Toronto time) at the offices of Bennett Jones LLP located at One First Canadian Place, 100 King Street West, Suite 3400, Toronto, Ontario, Canada, M5X 1A4. The management information circular of Osisko dated as of September 6, 2024, together with the associated materials relating to the Special Meeting (collectively, the “Special Meeting Materials“) are available on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile. Shareholders are encouraged to review the Special Meeting Materials prior to voting on the Arrangement.

Shareholder Questions

Shareholders who have questions about the Special Meeting, or require more information or assistance in voting, should contact Osisko’s strategic shareholder advisor and proxy solicitation agent, Laurel Hill Advisory Group, at:

North America Toll Free: 1-877-452-7184
Collect Calls Outside North America: +1 416-304-0211 (for Shareholders outside Canada and the US)
By Email: assistance@laurelhill.com

About Osisko

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 50% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 50% interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,300 square kilometers).

Cautionary Statement Regarding Forward-Looking Statements

This news release may contain forward-looking statements (within the meaning of applicable securities laws) which reflect Osisko’s current expectations regarding future events. Forward-looking statements are identified by words such as “believe”, “anticipate”, “project”, “expect”, “intend”, “plan”, “will”, “may”, “estimate” and other similar expressions. The forward-looking statements in this news release include statements regarding the proposed acquisition by Gold Fields of all of the Shares of Osisko and the terms thereof, the anticipated date of the Special Meeting, the anticipated filing of materials on SEDAR+, the expected date of completion of the Arrangement, the receipt of all required regulatory approvals and other statements that are not historical fact.

The forward-looking statements in this news release are based on a number of key expectations and assumptions made by Osisko including, without limitation: the Arrangement will be completed on the terms currently contemplated; the Arrangement will be completed in accordance with the timing currently expected; and all conditions to the completion of the Arrangement will be satisfied or waived. Although the forward-looking statements contained in this news release are based on what Osisko’s management believes to be reasonable assumptions, Osisko cannot assure investors that actual results will be consistent with such statements.

The forward-looking statements in this news release are not guarantees of future performance and involve risks and uncertainties that are difficult to control or predict. Several factors could cause actual results to differ materially from the results discussed in the forward-looking statements. Such factors include, among others: the Arrangement not being completed in accordance with the terms currently contemplated or the timing currently expected, or at all; expenses incurred by Osisko in connection with the Arrangement that must be paid by Osisko in whole or in part regardless of whether or not the Arrangement is completed; the conditions to the Arrangement not being satisfied by Osisko and Gold Fields; currency fluctuations; disruptions or changes in the credit or security markets; results of operations; and general developments, market and industry conditions. Additional factors are identified in Osisko’s annual information form for the year ended December 31, 2023, the most recent Management’s Discussion and Analysis, and in the management information circular of Osisko dated September 6, 2024 each of which is available on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile.

Readers, therefore, should not place undue reliance on any such forward-looking statements. There can be no assurance that the Arrangement will be completed or that it will be completed on the terms and conditions contemplated in this news release. The proposed Arrangement could be modified or terminated in accordance with its terms. Further, these forward-looking statements are made as of the date of this news release and, except as expressly required by applicable law, Osisko assumes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

Contact Information:

John Burzynski
Chairman & Chief Executive Officer
(416) 363-8563

Osisko Mining Board of Directors Unanimously Recommends that Shareholders vote FOR the Arrangement

Shareholders Are Reminded to Vote Prior to October 15, 2024 Proxy Submission Deadline

TORONTO, ONTARIO – October 2, 2024 – Osisko Mining Inc. (“Osisko“) (TSX:OSK) is pleased to announce that Institutional Shareholder Services Inc. (“ISS“) and Glass Lewis & Co. (“Glass Lewis“), two leading independent proxy advisory firms that provide voting recommendations to institutional investors, have each recommended that shareholders of Osisko (the “Shareholders“) vote FOR the acquisition of all of the issued and outstanding common shares of Osisko (the “Shares” and each, a “Share“) by Gold Fields Limited, through its 100% owned Canadian subsidiary (the “Purchaser“), by way of a statutory plan of arrangement under the Business Corporations Act (Ontario) (the “Arrangement“). Shareholders will be asked to vote on the Arrangement at the upcoming special meeting of Shareholders (the “Special Meeting“) scheduled to be held on October 17, 2024 at 10:00 a.m. (Toronto time).

Under the terms of the Arrangement, each Shareholder will be entitled to receive C$4.90 (the “Consideration“) per Share upon completion of the Arrangement. The Consideration represents an approximate 55% premium to the 20‐day volume weighted average trading price per Share on the Toronto Stock Exchange for the period ending August 9, 2024, being the last trading day prior to the announcement of the Arrangement.

Two independent proxy advisory firms – ISS and Glass Lewis – have recommended that Shareholders vote FOR the Arrangement.

In its recommendation, ISS noted that the Consideration represents a significant premium to the price of the Shares prior to the announcement of the Arrangement, that the valuation of Osisko appears credible, and that the board of the directors of Osisko engaged in a robust process in reviewing the proposal from the Purchaser.

On the unanimous recommendation of the Special Committee, the Board of Directors of Osisko unanimously recommends that Shareholders vote FOR the Arrangement.

YOUR VOTE IS IMPORTANT – PLEASE VOTE TODAY

The proxy voting deadline is 10:00 a.m. (Toronto time) on Tuesday, October 15, 2024.

Special Meeting Details

The Special Meeting is scheduled to be held on Thursday, October 17, 2024 at 10:00 a.m. (Toronto time) at the offices of Bennett Jones LLP located at One First Canadian Place, 100 King Street West, Suite 3400, Toronto, Ontario, Canada, M5X 1A4. The management information circular of Osisko dated as of September 6, 2024, together with the associated materials relating to the Special Meeting (collectively, the “Special Meeting Materials“) are available on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile. Shareholders are encouraged to review the Special Meeting Materials prior to voting on the Arrangement.

Shareholder Questions

Shareholders who have questions about the Special Meeting, or require more information or assistance in voting, should contact Osisko’s strategic shareholder advisor and proxy solicitation agent, Laurel Hill Advisory Group, at:

North America Toll Free: 1-877-452-7184
Collect Calls Outside North America: +1 416-304-0211 (for Shareholders outside Canada and the US)
By Email: assistance@laurelhill.com

About Osisko

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 50% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 50% interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,300 square kilometers).

Cautionary Statement Regarding Forward-Looking Statements

This news release may contain forward-looking statements (within the meaning of applicable securities laws) which reflect Osisko’s current expectations regarding future events. Forward-looking statements are identified by words such as “believe”, “anticipate”, “project”, “expect”, “intend”, “plan”, “will”, “may”, “estimate” and other similar expressions. The forward-looking statements in this news release include statements regarding the proposed acquisition by the Purchaser of all of the Shares of Osisko and the terms thereof, the anticipated date of the Special Meeting, the anticipated filing of materials on SEDAR+, the expected date of completion of the Arrangement, the receipt of all required regulatory approvals and other statements that are not historical fact.

The forward-looking statements in this news release are based on a number of key expectations and assumptions made by Osisko including, without limitation: the Arrangement will be completed on the terms currently contemplated; the Arrangement will be completed in accordance with the timing currently expected; and all conditions to the completion of the Arrangement will be satisfied or waived. Although the forward-looking statements contained in this news release are based on what Osisko’s management believes to be reasonable assumptions, Osisko cannot assure investors that actual results will be consistent with such statements.

The forward-looking statements in this news release are not guarantees of future performance and involve risks and uncertainties that are difficult to control or predict. Several factors could cause actual results to differ materially from the results discussed in the forward-looking statements. Such factors include, among others: the Arrangement not being completed in accordance with the terms currently contemplated or the timing currently expected, or at all; expenses incurred by Osisko in connection with the Arrangement that must be paid by Osisko in whole or in part regardless of whether or not the Arrangement is completed; the conditions to the Arrangement not being satisfied by Osisko and the Purchaser; currency fluctuations; disruptions or changes in the credit or security markets; results of operations; and general developments, market and industry conditions. Additional factors are identified in Osisko’s annual information form for the year ended December 31, 2023, the most recent Management’s Discussion and Analysis, and in the management information circular of Osisko dated September 6, 2024 each of which is available on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile.

Readers, therefore, should not place undue reliance on any such forward-looking statements. There can be no assurance that the Arrangement will be completed or that it will be completed on the terms and conditions contemplated in this news release. The proposed Arrangement could be modified or terminated in accordance with its terms. Further, these forward-looking statements are made as of the date of this news release and, except as expressly required by applicable law, Osisko assumes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

Contact Information:

John Burzynski
Chairman & Chief Executive Officer
(416) 363-8563

Consideration of C$4.90 in cash per Osisko share represents 55% premium to 20-day VWAP

Board of Directors unanimously recommends
Osisko shareholders vote in FAVOUR of the Transaction

TORONTO, ONTARIO – August 12, 2024 – Osisko Mining Inc. (“Osisko“) (TSX:OSK) is pleased to announce that it has entered into a definitive arrangement agreement dated August 12, 2024 (the “Arrangement Agreement“) pursuant to which Gold Fields Limited, through a 100% owned Canadian subsidiary (the “Purchaser” or “Gold Fields“), has agreed to acquire all of the issued and outstanding common shares of Osisko (the “Shares“) at a price of C$4.90 per Share (the “Consideration“), in an all-cash transaction valued at approximately C$2.16 billion on a fully diluted basis (the “Transaction“). The Transaction will be completed by way of a statutory plan of arrangement under the Business Corporations Act (Ontario).

The Consideration represents an approximate 55% premium to the 20‐day volume weighted average trading price per Share on the Toronto Stock Exchange (“TSX“) for the period ending August 9, 2024, being the last trading day prior to the announcement of the Transaction.

Osisko’s Chairman and Chief Executive Officer, John Burzynski, stated:

“This premium transaction represents a strong and near-term outcome for our shareholders and is reflective of the truly world class nature of the Windfall Project. In the span of nine years, we’ve transformed Windfall into one of the largest and highest-grade gold development projects globally, and this Transaction is a testament to the extraordinary entrepreneurial effort of the Osisko Mining team. Gold Fields is a globally diversified senior gold producer with an impressive track record of successfully building and operating mines. As our joint venture partner at Windfall, Gold Fields knows the asset well and understands the significance of the strong relationships that we have built in Québec with all of our stakeholders. Moreover, Gold Fields share our core principles of operating in a safe, inclusive and socially responsible manner. They are well suited to take Windfall into production and we wish them all the best going forward.”

Gold Fields’ Chief Executive Officer, Mike Fraser, stated:

“We are pleased to consolidate the remaining 50% interest of the advanced-stage Windfall Project and its highly prospective exploration camp. Over the past two years, beginning with our initial due diligence in 2022 and throughout our joint ownership of the Project, since May 2023 with Osisko, we have developed a strong understanding of Windfall and its potential, and view it as the next long-life cornerstone asset in our portfolio.

We are excited to build on the progress achieved to date at Windfall and look forward to continue working with the host Cree First Nation of Waswanipi, other local communities, the Québec Government and Windfall employees and business partners as we advance this Project which I strongly believe will create shared, enduring value for Gold Fields and our people, community, business and government partners.”

Benefits to Osisko Shareholders

• All-cash offer that is not subject to a financing condition
• Immediate and attractive premium for Osisko shareholders
• Removes future dilution, commodity, construction and execution risk

Board of Directors Recommendation

The board of directors of Osisko (the “Board“), having received a unanimous recommendation from a special committee comprised solely of independent directors of Osisko (the “Special Committee“) and after receiving outside legal and financial advice, has unanimously determined that the Transaction is in the best interests of Osisko and is fair to the shareholders of Osisko (the “Shareholders“) and unanimously recommends that Shareholders vote in favour of the Transaction. In making their respective determinations, the Board considered, among other factors, the oral fairness opinions of Maxit Capital LP (“Maxit Capital“) and Canaccord Genuity Corp. (“Canaccord Genuity“), and the Special Committee considered, among other factors, the oral fairness opinion of Fort Capital Partners (“Fort Capital“). Each of the fairness opinions concluded that, as of August 10, 2024, subject to the assumptions, limitations and qualifications contained therein, the Consideration to be received by the Shareholders pursuant to the Transaction is fair, from a financial point of view, to such Shareholders. A copy of the fairness opinions will be included in the management information circular of the Company (the “Information Circular“) to be mailed to the Shareholders in connection with the special meeting of Shareholders (the “Meeting“) to be called to approve the Transaction.

Transaction Details

The Transaction will be implemented by way of a statutory plan of arrangement under Section 182 of the Business Corporations Act (Ontario) (the “Plan of Arrangement“). Completion of the Transaction is subject to customary conditions, including, among others, court approval, regulatory approvals, the approval of at least two‐thirds of the votes cast by the Shareholders present in person or represented by proxy at the Meeting and a simple majority of the votes cast by Shareholders on a resolution approving the Arrangement, excluding for this purpose the votes attached to the Shares held by persons required to be excluded for purposes of Multilateral Instrument 61-101 – Protection of Minority Security Holders in Special Transactions.

In connection with the Transaction, each of the directors and executive officers of Osisko have entered into a voting support agreement (collectively, the “Voting Support Agreements“) with the Purchaser and Gold Fields Limited, pursuant to which they have agreed, among other things, to vote all of their Shares (including any Shares issued upon the exercise of any securities convertible, exercisable or exchangeable into Shares) in favour of the Transaction.

The Arrangement Agreement provides for customary deal protection provisions, including non-solicitation covenants of Osisko and “fiduciary out” provisions in favour of Osisko. In addition, the Arrangement Agreement provides for a termination fee of C$108 million payable by Osisko if it accepts a superior proposal and in certain other specified circumstances. Each of Osisko and the Purchaser have made customary representations and warranties and covenants in the Arrangement Agreement, including covenants regarding the conduct of Osisko’s business prior to the closing of the Transaction.

Pursuant to the terms of the Arrangement Agreement, each outstanding option to purchase common shares in the capital of Osisko (each, a “Company Option“) immediately prior to the effective time of the Arrangement shall be, and shall be deemed to be, unconditionally vested and exercisable and shall be deemed to be assigned and transferred by such holder to Osisko in exchange for a cash payment from Osisko equal to the Company Option in-the-money amount. Each such Company Option shall immediately be cancelled, and the holder shall cease to be a holder of such Company Option. Each deferred share unit and restricted share unit of Osisko granted under Osisko’s equity incentive plans outstanding immediately prior to the effective time of the Arrangement Agreement shall be deemed to be settled by Osisko in exchange for a cash payment from Osisko pursuant to the terms of the Arrangement Agreement. The C$154 million of 4.75% convertible senior unsecured debenture due December 1, 2025 will either be converted by the holder thereof for Shares in advance of the closing of the Transaction, or will be repaid in accordance with its terms.

The common share purchase warrants of the Company (the “Warrants“) issued on February 28, 2023, with an exercise price of C$4.00 per Share, are scheduled to expire on August 28, 2024. Any Shares issuable upon the exercise of such Warrants will be entitled to receive the Consideration of C$4.90 per Share pursuant to the Transaction.

Subject to the satisfaction of all conditions to closing set out in the Arrangement Agreement, it is anticipated that the Transaction will be completed in Q4 2024. Upon closing of the Transaction, it is expected that the Shares will be delisted from the TSX and that Osisko will cease to be a reporting issuer under applicable Canadian securities laws.

The foregoing summary is qualified in its entirety by the provisions of the respective documents. Copies of the fairness opinions of Maxit Capital, Canaccord Genuity and Fort Capital, and a description of the various factors considered by the Special Committee and the Board in their respective determination to approve the Transaction, as well as other relevant background information, will be included in the Information Circular to be sent to the Shareholders in advance of the Meeting. Copies of the Information Circular, the Arrangement Agreement, the Plan of Arrangement, the Voting Support Agreements and certain related documents will be filed with the applicable Canadian securities regulators and will be available in due course on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile.

Advisors

Maxit Capital and Canaccord Genuity are acting as financial advisors to Osisko. Bennett Jones LLP is acting as legal advisor to Osisko. Fort Capital is acting as financial advisor to the Special Committee. Cassels Brock & Blackwell LLP is acting as legal advisor to the Special Committee.

About Osisko

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 50% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 50% interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,300 square kilometers).

About Gold Fields

Gold Fields is a globally diversified gold producer with nine operating mines in Australia, South Africa, Ghana, Chile and Peru and one project in Canada. Gold Fields shares are listed on the Johannesburg Stock Exchange (JSE) and its American depositary shares trade on the New York Exchange (NYSE).

Cautionary Statement Regarding Forward-Looking Statements

This news release may contain forward-looking statements (within the meaning of applicable securities laws) which reflect Osisko’s current expectations regarding future events. Forward-looking statements are identified by words such as “believe”, “anticipate”, “project”, “expect”, “intend”, “plan”, “will”, “may”, “estimate” and other similar expressions. The forward-looking statements in this news release include statements regarding the proposed acquisition by the Purchaser of all of the Shares of Osisko and the terms thereof, the anticipated date of the Meeting, the anticipated filing of materials on SEDAR+, the expected date of completion of the Transaction, the expectation that the Shares will be delisted from the TSX and that Osisko will cease to be a reporting issuer under applicable Canadian securities laws and other statements that are not historical fact.

The forward-looking statements in this news release are based on a number of key expectations and assumptions made by Osisko including, without limitation: the Transaction will be completed on the terms currently contemplated, the Transaction will be completed in accordance with the timing currently expected, all conditions to the completion of the Transaction will be satisfied or waived and the Arrangement Agreement will not be terminated prior to the completion of the Transaction, and assumptions and expectations related to premiums to the trading price of the Shares and returns to the Shareholders. Although the forward-looking statements contained in this news release are based on what Osisko’s management believes to be reasonable assumptions, Osisko cannot assure investors that actual results will be consistent with such statements.

The forward-looking statements in this news release are not guarantees of future performance and involve risks and uncertainties that are difficult to control or predict. Several factors could cause actual results to differ materially from the results discussed in the forward-looking statements. Such factors include, among others: the Transaction not being completed in accordance with the terms currently contemplated or the timing currently expected, or at all, expenses incurred by Osisko in connection with the Transaction that must be paid by Osisko in whole or in part regardless of whether or not the Transaction is completed, the conditions to the Transaction not being satisfied by Osisko and the Purchaser, currency fluctuations, disruptions or changes in the credit or security markets, results of operations, and general developments, market and industry conditions. Additional factors are identified in Osisko’s annual information form for the year ended December 31, 2023 and most recent Management’s Discussion and Analysis, each of which is available on SEDAR+ at www.sedarplus.ca.

Readers, therefore, should not place undue reliance on any such forward-looking statements. There can be no assurance that the Transaction will be completed or that it will be completed on the terms and conditions contemplated in this news release. The proposed Transaction could be modified or terminated in accordance with its terms. Further, these forward-looking statements are made as of the date of this news release and, except as expressly required by applicable law, Osisko assumes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

Contact Information:

John Burzynski

Chairman & Chief Executive Officer

(416) 363-8563

OSISKO ANNOUNCES RESULTS OF ANNUAL MEETING OF SHAREHOLDERS

Toronto, Ontario (May 30, 2024) – Osisko Mining Inc. (TSX:OSK “Osisko” or the “Corporation“) announces the results of its annual meeting of shareholders (the “Meeting“) held earlier today. A total of 262,117,077 common shares of the Corporation were represented at the Meeting, representing approximately 70.911% of the total number of common shares of the Corporation issued and outstanding.

All matters presented for approval at the Meeting were duly authorized and approved, as follows:

• PricewaterhouseCoopers LLP was appointed as the auditor of the Corporation for the ensuing year, and the board of directors of the Corporation was authorized to fix their remuneration; and
• all of the management nominees were elected to the board of directors of the Corporation to serve for the ensuing year or until their successors are duly elected or appointed (details in table below); and

Detailed voting results regarding the election of directors are as follows:

Name	Voted For		Voted Withhold
	(#)	(%)	(#)	(%)
John Burzynski	231,099,633	97.048%	7,030,789	2.952%
José Vizquerra Benavides	221,827,725	93.154%	16,302,697	6.846%
Patrick F.N. Anderson	233,240,304	97.946%	4,890,118	2.054%
Keith McKay	135,555,520	56.925%	102,574,902	43.075%
Amy Satov	132,496,091	55.640%	105,634,331	44.360%
Bernardo Alvarez Calderon	135,823,141	57.037%	102,307,281	42.963%
Andrée St-Germain	230,215,991	96.676%	7,914,431	3.324%
Cathy Singer	235,620,007	98.946%	2,510,415	1.054%

Further details on the above matters, including the report of voting results thereon, are available on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile.

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 50% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 50% interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,300 square kilometers). 

For further information please contact:

John Burzynski

Chief Executive Officer

Telephone (416) 363-8653

(Toronto, January 18, 2024) Osisko Mining Inc. (TSX: OSK “Osisko” or the “Corporation”) is pleased to provide the following corporate updates on the Corporation’s activities for 2024.

Grid Power Arrives at Windfall

The 85 km long 69 kV hydro-electric power line built, owned and operated by the Waswanipi Cree First Nation has been completed on schedule, and grid power has successfully been connected to the Windfall Project. The use of hydroelectricity at the Windfall Project marks the switching over from diesel generated electricity to operate the camp and underground infrastructure and will significantly reduce both power costs and greenhouse gas emissions at the site.

Regional Exploration Program

Osisko has begun a 35,000 meter drill program on the Urban-Barry properties as part of its 70% earn-in option with Bonterra Resources Inc. (please see Osisko’s news release dated September 25, 2023). The program will initially focus on the Moss showing, located five kilometres south-west along strike from the Windfall gold deposit, where an historical intercept of high-grade mineralization in prior Bonterra drilling has been interpreted by Osisko’s exploration team to potentially represent the Lynx mineralized system seen at the Windfall Project.

Regional exploration also continues on Windfall Mining Group’s (“WMG”) claim package with an additional 30,000 metres of drilling targeting potential gold-bearing structures including the extension of the Bank fault and porphyritic intrusions associated with favorable alterations.

John Burzynski, Osisko’s Chairman of the Board and Chief Executive Officer said “Today is a significant milestone for the Windfall Project and for the Cree First Nation as the powerline comes into operation on schedule. We want to thank all the teams and personnel involved in this success and appreciate all their hard work, especially given the challenges presented by the extensive regional forest fires over the past summer. We are looking forward to an exciting year with our 2024 regional work program, and have confidence that additional Windfall-style deposits will come to light in the Urban-Barry District as we push forward with new exploration.”

Permitting Process and IBA

The Windfall Environmental Impact Assessment review process by the COMEX is ongoing, and the Corporation is expecting WMG to receive the first round of questions in the coming months. In parallel, the Corporation expects to finalize the Windfall Impact and Benefits Agreement with the Cree First Nation of Waswanipi and the Cree Nation Government in 2024.

Qualified Person

The scientific and technical content in this news release has been reviewed and approved by Mr. Mathieu Savard, P.Geo (OGQ #510), President of Osisko, who is a “qualified person” (within the meaning of National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”)).

About the Windfall Gold Deposit

The Windfall gold deposit is located between Val-d’Or and Chibougamau in the Abitibi region of Québec, Canada. The mineral resource estimate on the Windfall Project (with an effective date of June 7, 2022 ) (the “Windfall Resource Estimate”) and the mineral reserve estimate on the Windfall Project (with an effective date of November 25, 2022) (the “Windfall Reserve Estimate”) are described in the technical report entitled “Feasibility Study for the Windfall Project, Eeyou Istchee James Bay, Québec, Canada” (the “FS Technical Report”) and dated January 10, 2023 (with an effective date of November 25, 2022).  The Windfall Resource Estimate, assuming a cut-off grade of 3.50 g/t Au, comprises 811,000 tonnes at 11.4 g/t Au (297,000 ounces) in the measured mineral resource category, 10,250,000 tonnes at 11.4 g/t Au (3,754,000 ounces) in the indicated mineral resource category and 12,287,000 tonnes at 8.4 g/t Au (3,337,000 ounces) in the inferred mineral resource category.  The Windfall Mineral Reserve, assuming 3.5 g/t operating, 2.5 g/t incremental, and 1.7 g/t development cut-off grade, comprises 12,183,000 tonnes at 8.06 g/t Au (3,159,000 ounces) in the probable mineral reserves category.  The key assumptions, parameters, limitations and methods used in the feasibility study for the Windfal Project, including the related Windfall Resource Estimate and Windfall Reserve Estimate, are described in the FS Technical Report, which was prepared in accordance with NI 43-101.  The FS Technical Report is available on SEDAR+ (www.sedarplus.ca) under Osisko’s issuer profile.  The Windfall gold deposit is currently one of the highest-grade resource-stage gold projects in Canada and has world-class scale.  Mineralization occurs in three principal areas: Lynx, Main, and Underdog. Mineralization is generally comprised of sub-vertical lenses following intrusive porphyry contacts plunging to the northeast.  The resources are defined from surface to a depth of 1,600 metres, including the Triple 8 (TP8) zone.  The reserves are defined from surface to a depth of 1,100 metres. The deposit remains open along strike and at depth. Mineralization has been identified at surface in some areas and as deep as 2,625 metres in others with significant potential to extend mineralization down-plunge and at depth.

About Osisko Mining Inc.

Osisko is a mineral exploration company focused on the acquisition, exploration, and development of precious metal resource properties in Canada. Osisko holds a 50% interest in the high-grade Windfall gold deposit located between Val-d’Or and Chibougamau in Québec and holds a 50% interest in a large area of claims in the surrounding Urban Barry area and nearby Quévillon area (over 2,300 square kilometers).

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of the applicable Canadian securities legislation that is based on expectations, estimates, projections and interpretations as at the date of this news release. Any statement that involves predictions, expectations, interpretations, beliefs, plans, projections, objectives, assumptions, future events or performance (often, but not always, using phrases such as “expects”, or “does not expect”, “is expected”, “interpreted”, “management’s view”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “potential”, “feasibility”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking information and are intended to identify forward-looking information. This news release contains the forward-looking information pertaining to, among other things: the Windfall gold deposit being one of the highest-grade resource-stage gold projects in Canada and having world-class scale; the expected power demand at the Windfall Project; the expected significant reduction of both power costs and greenhouse gas emissions at the Windfall Project; the assumptions limitations and qualifications in the FS Technical Report, including relating to the Windfall Resource Estimate and Windfall Reserve Estimate; the scope, timing, progress and results of the drill program on the Urban-Barry properties; the scope, timing, progress and results of the regional exploration conducted on WMG’s land package; the prospects of the Windfall Project being a highly-profitable gold mine; future drilling at the Windfall gold deposit and the Urban-Barry properties; the significance of historic exploration activities and results; the ability to expand mineral resources or reserves beyond current mineral resource or reserve estimates; the ability to identify additional deposits (and the grade of such deposits) (if at all); the progress and timing of the permitting process on the Windfall Project; and the ability and timing to finalize an impact benefits agreement with Cree First Nation of Waswanipi and the Cree Nation Government (if at all). Such factors include, among others, risks relating to the ability of exploration activities (including drill results) to accurately predict mineralization; the timing and ability, if at all, to obtain permits; the reliance on third-parties for infrastructure critical to build and operate the project, including power lines; the timing and ability, if at all, to finalize an impact benefits agreement with Cree First Nation of Waswanipi and the Cree Nation Government the status of third-party approvals or consents; errors in management’s geological modelling; the ability of Osisko to complete further exploration activities, including (infill) drilling; property and royalty interests in the Windfall gold deposit; the ability of the Corporation to obtain required approvals; the results of exploration activities; risks relating to mining activities; the Canadian/United States dollar exchange rate; the global economic climate; metal (including gold) prices; dilution; environmental risks; and community and non-governmental actions. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, Osisko cannot assure shareholders and prospective purchasers of securities of the Corporation that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither Osisko nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. Osisko does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.

CONTACT INFORMATION

John Burzynski
Chief Executive Officer
Telephone (416) 363-8653