SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 7)

ERO Copper Corp.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

296006109

(CUSIP Number)

12/31/2025

(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.

296006109

Names of Reporting Persons

GMT Capital Corp.

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

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

GEORGIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,472,154.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,472,154.00

Aggregate Amount Beneficially Owned by Each Reporting Person

4,472,154.00

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

Checkbox not checked

Percent of class represented by amount in row (9)

4.30 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Calculated based on 103,890,254 shares of common stock of the Issuer (the "Common Stock") outstanding as of November 4, 2025, as reported on the Management Discussion and Analysis filed on SEDAR+ on November 4, 2025.

SCHEDULE 13G

CUSIP No.

296006109

Names of Reporting Persons

Thomas E. Claugus

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

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,472,154.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,472,154.00

Aggregate Amount Beneficially Owned by Each Reporting Person

4,472,154.00

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

Checkbox not checked

Percent of class represented by amount in row (9)

4.30 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

Item 1.

(a)

Name of issuer:

ERO Copper Corp.

(b)

Address of issuer's principal executive offices:

The principal executive offices of the Issuer are located at 625 Howe Street, Suite 1050 Vancouver, British Columbia V6C 2T6, Canada

Item 2.

(a)

Name of person filing:

i) GMT Capital Corp. ("GMT Capital") with respect to shares of Common Stock directly owned by each of Bay Resource Partners, L.P. ("Bay"), Bay II Resource Partners, L.P. ("Bay II"), Bay Resource Partners Offshore Master Fund, L.P. ("Bay Offshore") and certain sub-advisory and separate account clients advised by GMT Capital (together with Bay, Bay II and Bay Offshore, collectively, the "Managed Funds and Accounts"). ii) Thomas E. Claugus, the control person of GMT Capital, with respect to the shares of Common Stock directly owned by the Managed Funds and Accounts.

(b)

Address or principal business office or, if none, residence:

The address of the business office of each of the Reporting Persons is 2859 Paces Ferry Road SE Suite 1710, Atlanta, GA 30339.

(c)

Citizenship:

GMT Capital is a Georgia corporation. Mr. Claugus is a citizen of the United States.

(d)

Title of class of securities:

Common Stock

(e)

CUSIP No.:

296006109

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:

Amendment: SEC Form SCHEDULE 13G/A filed by Ero Copper Corp.