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JOINT NEWS RELEASE Agnico Eagle Announces Successful Take-Up of 94.1% of the Shares of O3 Mining and Mandatory Extension of Offer to February 3, 2025

Corporate Updates

JOINT NEWS RELEASE

Agnico Eagle Announces Successful Take-Up of 94.1% of the Shares

of O3 Mining and Mandatory Extension of Offer to February 3, 2025

• All-cash offer of $1.67 per share representing a 58% premium to O3 Mining’s closing price

on December 11, 2024

• Agnico Eagle has satisfied the minimum tender condition and has taken-up and acquired

94.1% of the outstanding O3 Mining shares

• Shareholders who have not already tendered should do so as soon as possible to take

advantage of the significant offer as their brokers, banks or other intermediaries likely have

tendering cut -off times well in advance of the expiry time of 11:59 p.m. (EST) on

February 3, 2025

• Tender your shares today for prompt payment. Contact Laurel Hill Advisory Group

for assistance at 1-877-452-7184 or email [email protected]

(All amounts expressed in Canadian dollars unless otherwise noted)

TORONTO – January 24, 2025 – Agnico Eagle Mines Limited (NYSE: AEM , TSX: AEM )

(“Agnico Eagle”) and O3 Mining Inc. (TSXV: OIII, OTCQX: OIIIF) (“O3 Mining”) are pleased to

jointly announce that Agnico Eagle has taken- up and acquired 110 ,424,431 common shares of

O3 Mining (the “ Deposited Shares”), representing approximately 94.1% of the outstanding

common shares of O3 Mining (the “ Common Shares”) on a basic basis, pursuant to its board -

supported take-over bid (the “Offer”) for all of the outstanding Common Shares for $1.67 in cash

per Common Share. The aggregate consideration payable for the Deposited Shares is

$184,408,800. Agnico Eagle will pay for th e Deposited Shares by January 28, 2025. All of the

conditions of the Offer have been satisfied or waived.

Agnico Eagle has extended the expiry time of the Offer by a mandatory period of 10 days to

11:59 p.m. (EST) on February 3, 2025 (the “Expiry Time ”) in order to allow the remaining

shareholders of O3 Mining to tender their Common Shares t o the Offer and receive the all-cash

offer price of $1.67 per Common Share.

O3 Mining’s President and Chief Executive Officer, Mr. José Vizquerra commented: “We are

pleased to achieve this excellent and timely outcome for our shareholders who tendered their

Common Shares to the Offer. While providing an opportunity for our shareholders to realize

immediate value at a significant premium, the transaction will also enable the efficient

advancement of the Marban Alliance project by Agnico Eagle, an experienced operator that has

the financial strength, mining expertise and community commitment to take the project to its next

stage of development.”

Full details of the Offer are contained in Agnico Eagle’s take-over bid circular and in O3 Mining’s

directors’ circular, which are available under O3 Mining’s profile on SEDAR+ (www.sedarplus.ca)

and on O3 Mining’s and Agnico Eagle’s respective websites. Agnico Eagle will file the Notice of

Extension extending the Expiry Time to 11:59 p.m. (EST) on February 3, 2025 under O3 Mining’s

profile on SEDAR+ ( www.sedarplus.ca) and on O3 Mining’ s and Agnico Eagle’ s respective

websites and mail the Notice of Extension to shareholders of O3 Mining in accordance with

applicable law. These materials contain important information on how to tender to the Offer.

Next Steps and How to Tender Your Shares to Receive Prompt Payment

Following the Expiry Time, Agnico Eagle intends to pursue a second-step transaction to acquire

the remaining Common Shares not tendered to the Offer, as described in Agnico Eagle’s take -

over bid circular available under O3 Mining’s profile on SEDAR+ (www.sedarplus.ca) and on O3

Mining’s and Agnico Eagle’s respective websites.

Remaining O3 Mining shareholders are strongly encouraged to tender their Common

Shares to the Offer prior to the Expiry Time to ensure that they promptly receive the offer

price of $1.67 per Common Share. O3 Mining shareholders whose Common Shares are held

through a broker, bank or other intermediary should immediately contact that intermediary for

assistance if they wish to accept the Offer – intermediaries have likely established tendering

cut-off times that are prior to the Expiry Time. Shareholders who do not tender prior to the

Expiry Time will not receive payment for their Common Shares until the complet ion of the

second-step transaction.

For information on tendering your Common Shares, please contact Laurel Hill Advisory Group toll

free at 1-877-452-7184 or by email at [email protected].

Shareholder type: How do I tender my Common Shares to the

Agnico Eagle Offer?

Beneficial

Most O3 Mining shareholders are beneficial

shareholders. This means your Common S hares

are held through a broker, bank or other financial

intermediary, and you do not have a share

certificate or DRS advice.

Contact your bank or your broker immediately and

instruct them to tender your Common Shares to the

Offer.

Registered

You are a registered shareholder if you hold your

Common S hares directly and have a share

certificate or DRS advice.

Contact Laurel Hill Advisory Group:

Phone: 1-877-452-7184

Email: [email protected]

For additional information regarding the Offer, please visit: https://www.agnicoeagle.com/Offer-

for-O3-Mining/default.aspx and https://o3mining.com/agnico-eagle-mines-limited-offer-for-o3-

mining-inc/.

O3 Mining Board Transition

In connection with the successful take-up of the Deposited Shares under the Offer, the board of

directors of O3 Mining was reconstituted to include representatives of Agnico Eagle. The O3

Mining board of directors is now comprised of continuing directors Amy Satov and Bernardo

Alvarez Calderon and Agnico Eagle r epresentatives Peter Netupsky, Carol Plummer, Jean

Robitaille and Chris Vollmershausen. Peter Netupsky is Vice President, Corporate Development

of Agnico Eagle; Carol Plummer is Executive Vice President, Sustainability, People & Culture of

Agnico Eagle; Jean Robitaille is Executive Vice President, Chief Strategy & Technology Officer

of Agnico Eagle; and Chris Vollmershausen is Executive Vice President, Legal, General Counsel

& Corporate Secretary of Agnico Eagle.

At Agnico Eagle’s request, Jos é Vizquerra and Elijah Tyshynski will continue in their roles as

President and Chief Executive Officer and as Chief Financial Officer and Corporate Secretary of

O3 Mining, respectively, until the completion of the second-step transaction.

Additional Early Warning Disclosure Regarding O3 Mining

Immediately prior to the take- up of the Deposited Shares under the Offer, Agnico Eagle

beneficially owned, and exercised control and direction over, 1,057,753 Common Shar es,

representing approximately 0.9% of the issued and outstanding Common Shares on a basic

basis, and 270,000 Common Share purchase warrants (the “Warrants”) exercisable for an

aggregate of 270,000 Common Shares at an exercise price of $1.45 per Warrant. In addition,

Agnico Eagle held a convertible senior unsecured debenture in the principal amount of

$10,000,000 dated June 19, 2023 (the “Convertible Debenture”). Assuming the full exercise of

all Warrants held by Agnico Eagle and the full conversion of t he Convertible Debenture

immediately prior to the take- up of Common Shares under the Offer , Agnico Eagle would

beneficially own, and exercise control and direction over, 6,205,802 Common Shares ,

representing approximately 5.1% of the issued and outstanding Common Shares on a partially-

diluted basis.

Agnico Eagle acquired 110,424,431 Deposited Shares pursuant to the Offer, representing all of

the Common Shares validly deposited and not withdrawn as of 11:59 p.m. ( EST) on

January 23, 2025, for aggregate consideration of $184,408,800 in cash. As a result, as of the

date hereof, Agnico Eagle beneficially owns, and exercises control and direction over, an

aggregate of 111,482,184 Common Shares, representing approximately 95% of the issued and

outstanding Common Shares on a basic basis. Assuming the full exercise of all Warrants held

by Agnico Eagle and the full conversion of the Convertible Debenture , Agnico Eagle would

beneficially own, and exercise control and direction over, 116,630,233 Common Shares ,

representing approximately 95.2% of the issued and outstanding Common Shares on a partially-

diluted basis.

Early Warning Disclosure Regarding Cartier Resources

Immediately prior to the take -up of the Deposited Shares under the Offer, (i) Agnico Eagle

beneficially owned, and exercised control and direction over, 50,749,679 common shares ( the

“Cartier Shares”) of Cartier Resources Inc. (“Cartier ”) and 7,000,000 Cartier Share purchase

warrants (the “ Cartier Warrants ”), representing approximately 15.6 % of the issued and

outstanding Cartier Shares on a partially -diluted basis assuming the full exercise of the Cartier

Warrants held by Agnico Eagle, and (ii) O3 Mining beneficially owned, and exercised control and

direction over, 46,273,265 Cartier Shares, representing approximately 12.7% of the issued and

outstanding Cartier Shares on a basic basis.

As a result of Agnico Eagle’s acquisition of control of O3 M ining pursuant to the Offer, as of the

date hereof, Agnico Eagle is deemed to beneficially own, and exercise control and direction over,

an aggregate of 97,022,944 Cartier Shares, representing approximately 26.7% of the issued and

outstanding Cartier Shares on a basic basis. Assuming the full exercise of all Cartier Warrants

held by Agnico Eagle, Agnico Eagle would be deemed to beneficially own, and exercise control

and direction over, 104,022,944 Cartier Shares, representing approximately 28.0% of the issued

and outstanding Cartier Shares on a partially-diluted basis.

Agnico Eagle holds its Cartier Shares and Cartier Warrants for investment purposes. Depending

on market conditions and other factors, Agnico Eagle may, from time to time, acquire additional

Cartier Shares, Cartier Warrants or other securities of Cartier or dispose of some or all of its

Cartier Shares, Cartier Warrants or other securities of Cartier that it owns at such time.

Early Warning Disclosure Regarding STLLR Gold Inc.

Immediately prior to the take-up of the Deposited Shares under the Offer, O3 Mining beneficially

owned, and exercised control and direction over, 12,458,939 common shares (the “ STLLR

Shares”) of STLLR Gold Inc. (“ STLLR”), representing approximately 10.1% of the issued and

outstanding STLLR Shares on a basic basis. Agnico Eagle did not beneficially own, or exercise

control or direction over, any STLLR Shares.

As a result of Agnico Eagle’s acquisition of control of O3 Mining pursuant to the Offer, as of the

date hereof, Agnico Eagle is deemed to beneficially own, and exercise control and direction over,

12,458,939 STLLR Shares, representing approximately 10 .1% of the issued and outstanding

STLLR Shares on a basic basis.

Agnico Eagle holds its STLLR Shares for investment purposes. Depending on market conditions

and other factors, Agnico Eagle may, from time to time, acquire additional STLLR Shares or other

securities of STLLR or dispose of some or all of its STLLR Shares or other securities of STLLR

that it owns at such time.

Early warning reports in respect of the foregoing will be filed by Agnico Eagle in accordance with

applicable securities laws. To obtain a copy of each early warning report, please contact:

Agnico Eagle Mines Limited

c/o Investor Relations

145 King Street East, Suite 400

Toronto, Ontario M5C 2Y7

Telephone: 416-947-1212

Email: [email protected]

Agnico Eagle’s head office is located at 145 King Street East, Suite 400, Toronto, Ontario M5C

2Y7. O3 Mining’s head office is located at 155 University Avenue, Suite 1440, Toronto, Ontario

M5H 3B7. Cartier’s head office is located at 1740, chemin Sullivan, bureau 1000, Val d ’Or,

Québec J9P 7H1. STLLR’s head office is located at 181 Bay Street, Suite 4260, Toronto Ontario

M5J 2V1.

Advisors

Edgehill Advisory Ltd. is acting as financial advisor to Agnico Eagle. Davies Ward Phillips &

Vineberg LLP is acting as legal advisor to Agnico Eagle.

Maxit Capital is acting as financial advisor to O3 Mining. Bennett Jones LLP is acting as legal

advisor to O3 Mining. Fort Capital is acting as financial advisor to the Special Committee of

independent directors of O3 Mining. Cassels Brock & Blackwell LLP is acting as legal advisor to

the Special Committee.

The Depositary and Information Agent for the Offer is Laurel Hill Advisory Group. If you have any

questions or require assistance with tendering to the Offer, please contact Laurel Hill Advisory

Group, by phone at 1-877-452-7187 or by e-mail at [email protected].

About O3 Mining Inc.

O3 Mining Inc. is a gold explorer and mine developer in Québec, Canada, adjacent to Agnico

Eagle’s Canadian Malartic mine. O3 Mining owns a 100% interest in all its properties (128, 680

hectares) in Québec. Its principal asset is the Marban Alliance project in Québec, which O3 Mining

has advanced over the last five years to the cusp of its next stage of development, with the

expectation that the project will deliver long-term benefits to stakeholders.

About Agnico Eagle Mines Limited

Agnico Eagle is a Canadian based and led senior gold mining company and the third largest gold

producer in the world, producing precious metals from operations in Canada, Australia, Finland

and Mexico, with a pipeline of high-quality exploration and development projects. Agnico Eagle is

a partner of choice within the mining industry, recognized globally for its leading environmental,

social and governance practices. Agnico Eagle was founded in 1957 and has consistently created

value for its shareholders, declaring a cash dividend every year since 1983.

For further information on Agnico Eagle, please contact:

Investor Relations at [email protected] or call (416) 947-1212.

Cautionary Note Regarding Forward-Looking Information

This news release contains “ forward-looking information” within the meaning of applicable

Canadian securities legislation that is based on current expectations, estimates, projections, and

interpretations about future events as at the date of this news release. Forward -looking

information and statements are based on estimates of management by O3 Mining and Agnico

Eagle, at the time they were made, and involve known and unknown risks, uncertainties and other

factors which may cause the actual results, performance or achievements to be materially

different from any future results, performance or achievements expressed or implied by such

forward-looking information or statements. Forward- looking statements in this news release

include, but are not limited to, statements regarding: the Offer, including the anticipated timing of

expiration, mechanics, funding, completion, settlement, payment, results and effects of the Offer

and the other benefits of the transaction; the advancement of the Marban Alliance project; any

second-step transaction, including the timing for any such transaction and Agnico Eagle’ s

intentions with respect to any such transaction; and Agnico Eagle’s acquisition or disposition of

securities of Cartier and/or STLLR in the future. Material factors or assumptions that were applied

in formul ating the forward- looking information contained herein include, without limitation, the

expectations and beliefs of Agnico Eagle and O3 Mining that any second-step transaction will be

successful and the ability to achieve goals, including the integration of the Marban Alliance

property to the Canadian Malartic land package and the ability to realize synergies arising

therefrom. Agnico Eagle and O3 Mining caution that the foregoing list of material factors and

assumptions is not exhaustive. Alth ough the forward-looking information contained in this news

release is based upon what Agnico Eagle and O3 Mining believe, or believed at the time, to be

reasonable expectations and assumptions, there is no assur ance 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 O3 Mining, nor Agnico Eagle nor any

other person assumes responsibility for the accuracy and completeness of any such forward-

looking information. No assurance can be given that these expectations will prove to be correct

and such forward-looking statements included in this news release should not be unduly relied

upon. O3 Mining and Agnico Eagle do not undertake, and assume 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 applicable law. These

statements speak only as of the date of this news release. Nothing contained herein shall be

deemed to be a forecast, projection or estimate of the future financial performance of Agnico

Eagle or any of its affiliates or O3 Mining.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is

defined in the policies of the TSX Venture Exchange) accepts responsibility for the

adequacy or accuracy of this news release. No stock exchange, securities commission or

other regulatory authority has approved or disapproved the information contained herein.