Infinitum Copper Corp. — Major Shareholding Notification 2026

Apr 21, 2026

FORM 62-103F1

REQUIRED DISCLOSURE UNDER THE EARLY WARNING REQUIREMENTS

Item 1 – Security and Reporting Issuer

1.1 State the designation of securities to which this report relates and the name and address of the head office of the issuer of the securities.

This report relates to common shares (“Common Shares”) in the capital of Errington Metals Corp. (formerly, Black Pearl Resources Corp.) (“Errington”).

Errington’s head office is located at 717B Hewitson Street, Thunder Bay, Ontario, P7B 6B5.

1.2 State the name of the market in which the transaction or other occurrence that triggered the requirement to file this report took place.

The Common Shares are newly- and directly-issued securities of Errington issue from treasury in connection with the Transaction (as defined below).

Item 2 – Identity of the Acquiror

2.1 State the name and address of the acquirer.

Glencore Canada Corporation (“Glencore Canada”)
100 King Street West, Suite 6900
P.O. Box 403
Toronto, ON, Canada
M5X 1E3

Glencore Canada is incorporated under the laws of Ontario as a wholly-owned indirect subsidiary of Glencore plc, a globally diversified natural resource producer and commodities trading company.

2.2 State the date of the transaction or other occurrence that triggered the requirement to file this report and briefly describe the transaction or other occurrence.

On April 17, 2026, Glencore Canada acquired 9,317,797 Common Shares of Errington (the “Acquisition”).

The Acquisition was completed pursuant to the “go-public” qualifying transaction under the policies of the TSX Venture Exchange involving Errington, Errington Metals Inc., and 1001474534 Ontario Inc., a wholly-owned subsidiary of Errington (the “Transaction”) pursuant to which Glencore Canada, as a holder of special preferred shares of Errington Metals Inc. (the “Preferred Shares”), received 9,317,797 Common Shares on the conversion thereof, representing 19.9% of the issued and outstanding Common Shares on completion of the Transaction.

2.3 State the names of any joint actors.

Not applicable.

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Item 3 – Interest in Securities of the Reporting Issuer

3.1 State the designation and number or principal amount of securities acquired or disposed of that triggered the requirement to file the report and the change in the acquirer’s securityholding percentage in the class of securities.

Immediately prior to the completion of the Acquisition, Glencore Canada did not hold any securities of Errington.

Upon completion of the Acquisition, Glencore Canada beneficially owns and exercises control and direction over 9,317,797 Common Shares, being 19.9% of the issued and outstanding Common Shares.

The ownership percentages described above are based on Errington having 46,823,044 Common Shares issued and outstanding after giving effect to the Transaction, as disclosed by Errington to Glencore Canada as of April 17, 2026.

3.2 State whether the acquirer acquired or disposed ownership of, or acquired or ceased to have control over, the securities that triggered the requirement to file the report.

Glencore Canada acquired ownership over 9,317,797 Common Shares.

3.3 If the transaction involved a securities lending arrangement, state that fact.

Not applicable.

3.4 State the designation and number or principal amount of securities and the acquirer’s securityholding percentage in the class of securities, immediately before and after the transaction or other occurrence that triggered the requirement to file this report.

See Item 3.1 above.

3.5 State the designation and number or principal amount of securities and the acquirer’s securityholding percentage in the class of securities referred to in Item 3.4 over which

(a) the acquirer, either alone or together with any joint actors, has ownership and control,

See Item 3.1 above.

(b) the acquirer, either alone or together with any joint actors, has ownership but control is held by persons or companies other than the acquirer or any joint actor, and

Not applicable.

(c) the acquirer, either alone or together with any joint actors, has exclusive or shared control but does not have ownership.

Not applicable.

3.6 If the acquirer or any of its joint actors has an interest in, or right or obligation associated with, a related financial instrument involving a security of the class of securities in respect of

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which disclosure is required under this item, describe the material terms of the related financial instrument and its impact on the acquirer’s securityholdings.

Not applicable.

3.7 If the acquirer or any of its joint actors is a party to a securities lending arrangement involving a security of the class of securities in respect of which disclosure is required under this item, describe the material terms of the arrangement including the duration of the arrangement, the number or principal amount of securities involved and any right to recall the securities or identical securities that have been transferred or lent under the arrangement.

Not applicable.

State if the securities lending arrangement is subject to the exception provided in section 5.7 of NI 62-104.

Not applicable.

3.8 If the acquirer or any of its joint actors is a party to an agreement, arrangement or understanding that has the effect of altering, directly or indirectly, the acquirer’s economic exposure to the security of the class of securities to which this report relates, describe the material terms of the agreement, arrangement or understanding.

Not applicable.

Item 4 – Consideration Paid

4.1 State the value, in Canadian dollars, of any consideration paid or received per security and in total.

The Common Shares were issued upon the automatic conversion of 100 Preferred Shares in accordance with their terms and for no additional consideration upon the completion of the Transaction at a deemed issue price of C$1.25 per Common Share (being the offering price of the concurrent financing completed in connection with the Transaction). The aggregate deemed value of the Common Shares is approximately C$11,647,246.25.

4.2 In the case of a transaction or other occurrence that did not take place on a stock exchange or other market that represents a published market for the securities, including an issuance from treasury, disclose the nature and value, in Canadian dollars, of the consideration paid or received by the acquirer.

See Item 4.1 above.

4.3 If the securities were acquired or disposed of other than by purchase or sale, describe the method of acquisition or disposition.

See Items 2.2 and 4.1 above.

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Item 5 – Purpose of the Transaction

State the purpose or purposes of the acquirer and any joint actors for the acquisition or disposition of securities of the reporting issuer. Describe any plans or future intentions which the acquirer and any joint actors may have which relate to or would result in any of the following:

(a) the acquisition of additional securities of the reporting issuer, or the disposition of securities of the reporting issuer;

(b) a corporate transaction, such as a merger, reorganization or liquidation, involving the reporting issuer or any of its subsidiaries;

(c) a sale or transfer of a material amount of the assets of the reporting issuer or any of its subsidiaries;

(d) a change in the board of directors or management of the reporting issuer, including any plans or intentions to change the number or term of directors or to fill any existing vacancy on the board;

(e) a material change in the present capitalization or dividend policy of the reporting issuer;

(f) a material change in the reporting issuer’s business or corporate structure;

(g) a change in the reporting issuer’s charter, bylaws or similar instruments or another action which might impede the acquisition of control of the reporting issuer by any person or company;

(h) a class of securities of the reporting issuer being delisted from, or ceasing to be authorized to be quoted on, a marketplace;

(i) the issuer ceasing to be a reporting issuer in any jurisdiction of Canada;

(j) a solicitation of proxies from securityholders;

(k) an action similar to any of those enumerated above.

Glencore Canada acquired the Common Shares for investment purposes. Glencore Canada will continue to monitor Errington’s business, prospects, financial condition and potential capital requirements. Depending on its evaluation of these and other factors, Glencore Canada may from time to time in the future increase or decrease its direct or indirect ownership, control or direction over the Common Shares or other securities of Errington through market transactions, private agreements, subscriptions from treasury or otherwise, or may in the future develop plans or intentions or make proposals relating to any of the other actions listed in (a) through (k) above.

Item 6 – Agreements, Arrangements, Commitments or Understandings With Respect to Securities of the Reporting Issuer

Describe the material terms of any agreements, arrangements, commitments or understandings between the acquirer and a joint actor and among those persons and any person with respect to securities of the class of securities to which this report relates, including but not limited to the transfer or the voting of any of the securities, finder’s fees, joint ventures, loan or option arrangements,

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guarantees of profits, division of profits or loss, or the giving or withholding of proxies. Include such information for any of the securities that are pledged or otherwise subject to a contingency, the occurrence of which would give another person voting power or investment power over such securities, except that disclosure of standard default and similar provisions contained in loan agreements need not be included.

Glencore Canada and Errington Metals Inc. are party to an investor rights agreement dated April 30, 2025 (the “Glencore IRA”), pursuant to which Glencore Canada is entitled to certain customary investor rights with respect to Errington and the Common Shares, provided that it maintains a certain ownership threshold in Errington. Among other things, the Investor Rights Agreement provides Glencore Canada with (i) the right to designate one director for appointment to the board of directors of Errington, (ii) pre-emptive, top- up and other anti-dilution rights, (iii) rights with respect to any non-equity financing proposed to be undertaken by the Errington, and (iv) “piggyback” registration rights.

Item 7 – Change in Material Fact

If applicable, describe any change in a material fact set out in a previous report filed by the acquirer under the early warning requirements or Part 4 in respect of the reporting issuer’s securities.

Not applicable.

Item 8 – Exemption

If the acquirer relies on an exemption from requirements in securities legislation applicable to formal bids for the transaction, state the exemption being relied on and describe the facts supporting that reliance.

Not applicable.

Item 9 – Certification

I, as the acquirer, certify, or I, as the agent filing the report on behalf of an acquirer, certify to the best of my knowledge, information and belief, that the statements made in this report are true and complete in every respect.

DATED: April 21, 2026

GLENCORE CANADA CORPORATION

By: “Peter Wright”
Name: Peter Wright
Title: Vice President, Legal