UNITED ~~STATES~~STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

~~SECURITIES~~Form ~~AND EXCHANGE COMMISSION~~6-K

~~WASHINGTON,~~Report ~~D.C.~~of ~~20549~~Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

under the Securities Exchange Act of 1934

For the month of March 2026

Commission File Number : 001-40459

~~ERO~~Ero ~~COPPER~~Copper ~~CORP~~Corp.(Translation of registrant's name into English)

625 Howe Street, Suite 1050 Vancouver, British Columbia V6C 2T6 Canada(~~Translation~~Address of ~~registrant's~~principal ~~name~~executive ~~into English~~office)

625 Howe Street, Suite 1050

Vancouver, British Columbia V6C 2T6

Canada

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☐ [ ] Form 40-F ☒[ X ]

~~Indicate~~Exhibit 99.1 of this Form 6-K is incorporated by ~~check~~reference ~~mark~~as ifadditional exhibit to the registrant’s isRegistration ~~submitting~~Statement ~~the~~on Form 6S-K8 in(File ~~paper~~NO. as333-264821) ~~permitted~~and byRegistration ~~Regulation~~Statement ~~S-T~~on ~~Rule~~Form ~~101~~F-10 (bFile NO. 333-289969)~~(1)~~.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7).

Exhibit 99.1 of this Form 6-K is incorporated by reference as an additional exhibit to the registrant’s Registration Statement on Form S-8 (File NO. 333-264821) and Registration Statement on Form F-10 (File NO. 333-289969).

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Ero Copper Corp.		~~Ero Copper Corp.~~
			By:	/s/ Deepk Hundal
Date: March 23, 2026	By:	/s/ Deepk Hundal
		Name: Deepk Hundal		~~Name: Deepk Hundal~~
				Title: EVP, General Counsel and Corporate Secretary
		Title: Executive Vice President, General Counsel and Corporate Secretary
Date: March 13, 2026

~~Exhibit~~EXHIBIT ~~Index~~INDEX

Exhibit Number		Description				~~Description of Document~~
99.1		Modern Slavery Act Report 2025				~~Annual Report~~

Filing Compare · Ero Copper Corp.