[SCHEDULE 13G/A] Ero Copper Corp. SEC Filing

Rhea-AI Filing Summary

FIL Limited and affiliates disclosed a passive stake in Ero Copper Corp. In an amended Schedule 13G, the group reported beneficial ownership of 11,471,710 shares of common stock, representing 11.1% of the class as of the 10/31/2025 event date.

According to the filing, FIL Limited has sole voting power over 10,220,016 shares and sole dispositive power over 11,471,710 shares, with no shared voting or dispositive power. Co-reporting persons include Pandanus Partners, L.P. and Pandanus Associates, Inc.

The certification states the securities were acquired and are held in the ordinary course and not for the purpose of changing or influencing control of the issuer.

Insights

Equity ownership & disclosure analyst

Passive 11.1% stake disclosed; administrative, not thesis-changing.

FIL Limited, with Pandanus entities, reports beneficial ownership of 11,471,710 Ero Copper shares, or 11.1%. The filing indicates sole voting power over 10,220,016 shares and sole dispositive power over 11,471,710, aligning with a concentrated but passive position.

The Schedule 13G/A certification specifies ordinary-course acquisition and no intent to influence control. That makes this a disclosure update rather than a strategic action. One or more other persons may receive dividends or sale proceeds, but none exceed 5%.

Because this is a passive ownership report dated 10/31/2025, market impact depends on holder behavior, which is not addressed here. Subsequent filings may provide changes in ownership percentages if they occur.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

ERO COPPER CORP

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

296006109

(CUSIP Number)

10/31/2025

(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

1

Names of Reporting Persons

FIL Limited

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

BERMUDA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 10,220,016.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 11,471,710.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

11,471,710.00

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)

11.1 %

12

Type of Reporting Person (See Instructions)

FI

SCHEDULE 13G

CUSIP No. 296006109

1

Names of Reporting Persons

Pandanus Partners, L.P.

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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 11,471,710.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

11,471,710.00

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)

11.1 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. 296006109

1

Names of Reporting Persons

Pandanus Associates, 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

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 11,471,710.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

11,471,710.00

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)

11.1 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ERO COPPER CORP
(b)	Address of issuer's principal executive offices: 625 HOWE STREET,SUITE 1050,VANCOUVER,A1,CA,V6C 2T6
Item 2.
(a)	Name of person filing: FIL Limited
(b)	Address or principal business office or, if none, residence: Pembroke Hall, 42 Crow Lane, Hamilton, Bermuda, HM19
(c)	Citizenship: Not applicable
(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).
	Please see Exhibit 99.
Item 4.	Ownership
(a)	Amount beneficially owned: 11471710.00
(b)	Percent of class: 11.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: Please see the responses to Items 5 and 6 on the cover page.
	(ii) Shared power to vote or to direct the vote: 0.00
	(iii) Sole power to dispose or to direct the disposition of: 11471710.00
	(iv) Shared power to dispose or to direct the disposition of: 0.00
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. One or more other persons are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the COMMON STOCK of ERO COPPER CORP. No one other person's interest in the COMMON STOCK of ERO COPPER CORP is more than five percent of the total outstanding COMMON STOCK.
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 attached Exhibit 99.
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

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.

FIL Limited

Signature:	Stephanie J. Brown
Name/Title:	Duly authorized under Power of Attorney effective as of December 19, 2022, by and on behalf of FIL Limited and its direct and indirect subsidiaries*
Date:	11/06/2025

Pandanus Partners, L.P.

Signature:	Stephanie J. Brown
Name/Title:	Duly authorized under Power of Attorney effective as of December 19, 2022, by Pandanus Associates, Inc. on behalf of Pandanus Partners, L.P.*
Date:	11/06/2025

Pandanus Associates, Inc.

Signature:	Stephanie J. Brown
Name/Title:	Duly authorized under Power of Attorney effective as of December 19, 2022, by and on behalf of Pandanus Associates, Inc.*
Date:	11/06/2025

Comments accompanying signature: This power of attorney is incorporated herein by reference to Exhibit 24 to the Schedule 13G filed by FIL Limited on January 31, 2023, accession number: 0000318989-23-000005.

Exhibit Information

Please see Exhibit 99 for 13d-1(k) (1) agreement.

FAQ

What did FIL Limited report in the ERO Schedule 13G/A?

FIL Limited and affiliates reported beneficial ownership of 11,471,710 Ero Copper common shares, equal to 11.1% of the class.

What are the voting and dispositive powers reported for ERO (ERO Copper)?

The filer reports sole voting power over 10,220,016 shares and sole dispositive power over 11,471,710 shares; no shared powers.

Who are the reporting persons in the ERO 13G/A?

The reporting persons are FIL Limited, Pandanus Partners, L.P., and Pandanus Associates, Inc.

What is the event date for this ownership disclosure?

The date of event that triggered the filing is 10/31/2025.

Does the filing indicate an intent to influence control at Ero Copper?

No. The certification states the securities were acquired and are held in the ordinary course and not to change or influence control.

Are others entitled to dividends or sale proceeds from these ERO shares?

Yes. One or more other persons may receive dividends or sale proceeds, but no single person exceeds 5%.