Bank of Montreal discloses 3.02% Aris Mining stake (ARMN) in 13G/A

Rhea-AI Filing Summary

Aris Mining Corp received an amended ownership report from Bank of Montreal and several affiliates. They collectively report beneficial ownership of 6,113,639 common shares, representing 3.02% of the class as of September 30, 2025, below the 5% large‑holder threshold.

The group reports a mix of sole and shared voting and dispositive power across entities including Bank of Montreal Holding Inc., BMO Nesbitt Burns Inc., BMO Nesbitt Burns Inc. Wealth Management, and BMO Asset Management Inc. The amendment states it reflects deduction of positions that were incorrectly included in the initial filing.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Aris Mining Corp

(Name of Issuer)

Common Shares, no par value

(Title of Class of Securities)

04040Y109

(CUSIP Number)

09/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 04040Y109

1

Names of Reporting Persons

Bank of Montreal

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,216,282.00
6	Shared Voting Power 4,897,357.00
7	Sole Dispositive Power 1,216,282.00
8	Shared Dispositive Power 4,897,357.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,113,639.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.02 %

12

Type of Reporting Person (See Instructions)

HC

Comment for Type of Reporting Person: Amendment reflects deduction of positions incorrectly included in Initial filing (Accession Number 0000927971-25-000054)

SCHEDULE 13G

CUSIP No. 04040Y109

1

Names of Reporting Persons

BANK OF MONTREAL HOLDING INC.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,212,982.00
6	Shared Voting Power 4,897,357.00
7	Sole Dispositive Power 1,212,982.00
8	Shared Dispositive Power 4,897,357.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,110,339.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.01 %

12

Type of Reporting Person (See Instructions)

BK

Comment for Type of Reporting Person: Amendment reflects deduction of positions incorrectly included in Initial filing (Accession Number 0000927971-25-000054)

SCHEDULE 13G

CUSIP No. 04040Y109

1

Names of Reporting Persons

BMO NESBITT BURNS INC. WEALTH MANAGEMENT

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,211,979.00
6	Shared Voting Power 21,267.00
7	Sole Dispositive Power 1,211,979.00
8	Shared Dispositive Power 21,267.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,233,246.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.6 %

12

Type of Reporting Person (See Instructions)

BD

SCHEDULE 13G

CUSIP No. 04040Y109

1

Names of Reporting Persons

BMO ASSET MANAGEMENT INC.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

ONTARIO, CANADA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,196,716.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,196,716.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,196,716.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.59 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP No. 04040Y109

1

Names of Reporting Persons

BMO NESBITT BURNS INC.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

CANADA (FEDERAL LEVEL)

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,876,090.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,876,090.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,876,090.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

2.4 %

12

Type of Reporting Person (See Instructions)

BD

Comment for Type of Reporting Person: Amendment reflects deduction of positions incorrectly included in Initial filing (Accession Number 0000927971-25-000054)

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Aris Mining Corp
(b)	Address of issuer's principal executive offices: 2400-1021 WEST HASTINGS STREET, VANCOUVER, BRITISH COLUMBIA, CANADA V6E 0C3
Item 2.
(a)	Name of person filing: Bank of Montreal BANK OF MONTREAL HOLDING INC. BMO NESBITT BURNS INC. WEALTH MANAGEMENT BMO ASSET MANAGEMENT INC. BMO NESBITT BURNS INC.
(b)	Address or principal business office or, if none, residence: 1 First Canadian Place Toronto, Ontario, Canada M5X1A1
(c)	Citizenship: Bank of Montreal - CANADA (FEDERAL LEVEL) BANK OF MONTREAL HOLDING INC. - CANADA (FEDERAL LEVEL) BMO NESBITT BURNS INC. WEALTH MANAGEMENT - CANADA (FEDERAL LEVEL) BMO ASSET MANAGEMENT INC. - ONTARIO, CANADA BMO NESBITT BURNS INC. - CANADA (FEDERAL LEVEL)
(d)	Title of class of securities: Common Shares, no par value
(e)	CUSIP No.: 04040Y109
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 6,113,639
(b)	Percent of class: 3.02 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Bank of Montreal - 1,216,282 BANK OF MONTREAL HOLDING INC. - 1,212,982 BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 1,211,979 BMO ASSET MANAGEMENT INC. - 1,196,716 BMO NESBITT BURNS INC. - 0
	(ii) Shared power to vote or to direct the vote: Bank of Montreal - 4,897,357 BANK OF MONTREAL HOLDING INC. - 4,897,357 BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 21,267 BMO ASSET MANAGEMENT INC. - 0 BMO NESBITT BURNS INC. - 4,876,090
	(iii) Sole power to dispose or to direct the disposition of: Bank of Montreal - 1,216,282 BANK OF MONTREAL HOLDING INC. - 1,212,982 BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 1,211,979 BMO ASSET MANAGEMENT INC. - 1,196,716 BMO NESBITT BURNS INC. - 0
	(iv) Shared power to dispose or to direct the disposition of: Bank of Montreal - 4,897,357 BANK OF MONTREAL HOLDING INC. - 4,897,357 BMO NESBITT BURNS INC. WEALTH MANAGEMENT - 21,267 BMO ASSET MANAGEMENT INC. - 0 BMO NESBITT BURNS INC. - 4,876,090
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Documents
Item 8.	Identification and Classification of Members of the Group.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. Each reporting person may be deemed to be a member of a group with respect to the issuer or securities of the issuer for the purposes of Section 13(d) or 13(g) of the Act. Each reporting person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section13(d) or 13(g) of the Act or any other purpose, (i) acting (or has agreed or is agreeing to act) with any other person as a partnership, limited partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities of the issuer or otherwise with respect to the issuer or any securities of the issuer or (ii) a member of any syndicate or group with respect to the issuer or any securities of the issuer.
Item 9.	Notice of Dissolution of Group.
	Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity. See Item 5. Each reporting person may be deemed to be a member of a group with respect to the issuer or securities of the issuer for the purposes of Section 13(d) or 13(g) of the Act. Each reporting person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section13(d) or 13(g) of the Act or any other purpose, (i) acting (or has agreed or is agreeing to act) with any other person as a partnership, limited partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities of the issuer or otherwise with respect to the issuer or any securities of the issuer or (ii) a member of any syndicate or group with respect to the issuer or any securities of the issuer.

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Bank of Montreal

Signature:	Kathryn Cenac
Name/Title:	Managing Director - Regulatory Solutions Group
Date:	02/13/2026

BANK OF MONTREAL HOLDING INC.

Signature:	Kathryn Cenac
Name/Title:	Managing Director - Regulatory Solutions Group
Date:	02/13/2026

BMO NESBITT BURNS INC. WEALTH MANAGEMENT

Signature:	Kathryn Cenac
Name/Title:	Managing Director - Regulatory Solutions Group
Date:	02/13/2026

BMO ASSET MANAGEMENT INC.

Signature:	Kathryn Cenac
Name/Title:	Managing Director - Regulatory Solutions Group
Date:	02/13/2026

BMO NESBITT BURNS INC.

Signature:	Kathryn Cenac
Name/Title:	Managing Director - Regulatory Solutions Group
Date:	02/13/2026

FAQ

How many Aris Mining (ARMN) shares does Bank of Montreal report owning?

Bank of Montreal and its affiliates report beneficial ownership of 6,113,639 Aris Mining common shares. This stake represents 3.02% of the company’s outstanding common shares as of September 30, 2025, according to the amended Schedule 13G/A filing.

What percentage of Aris Mining (ARMN) does Bank of Montreal’s group hold?

The Bank of Montreal reporting group holds 3.02% of Aris Mining’s common shares. This level of ownership is below the 5% threshold that typically triggers more extensive beneficial ownership reporting requirements under U.S. securities regulations for large shareholders.

Why did Bank of Montreal amend its Aris Mining (ARMN) ownership filing?

The amendment states it reflects deduction of positions incorrectly included in the initial filing. In other words, previously reported holdings were overstated, and the revised Schedule 13G/A corrects the beneficial ownership figures now disclosed for the Bank of Montreal group.

Which Bank of Montreal entities report Aris Mining (ARMN) ownership?

Entities reporting include Bank of Montreal, Bank of Montreal Holding Inc., BMO Nesbitt Burns Inc., BMO Nesbitt Burns Inc. Wealth Management, and BMO Asset Management Inc., each with specified sole and shared voting and dispositive powers over Aris Mining common shares.

Does Bank of Montreal report sole or shared voting power in Aris Mining (ARMN)?

The filing shows both sole and shared voting power across entities. For example, Bank of Montreal lists sole voting power over 1,216,282 shares and shared voting power over 4,897,357 shares, illustrating how control is divided within the reporting group’s Aris Mining holdings.

Is Bank of Montreal’s Aris Mining (ARMN) stake reported as a control position?

No, the group certifies the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Aris Mining, consistent with the typical certification language in a Schedule 13G/A filing.