6-K

UNITEDSTATES

SECURITIESAND EXCHANGE COMMISSION

Washington,D.C. 20549

FORM 6-K

Reportof Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16

ofthe Securities Exchange Act of 1934

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

DOCUMENTS INCLUDEDAS PART OF THIS REPORT

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.

Exhibit 99.1

Electra Provides Corporate Update

Toronto, Ontario – (March 13, 2024) – Electra Battery Materials Corporation (NASDAQ: ELBM; TSX-V: ELBM) (“Electra” or the “Company”) is pleased to announce that the Company has received the approval of the TSX Venture Exchange to issue common shares in the capital of the Company (the “Shares”) in satisfaction of US$400,732 of interest payable to certain of the holders of US$51 million principal amount of 8.99% senior secured convertible notes (the “Notes”) pursuant to the terms of the previously announced agreement (February 27, 2024).

The issuance of Shares is anticipated to occur on March 21, 2024 at a deemed value equivalent to the greater of (i) CAD$0.30 and (ii) 95% of the simple average of the volume weighted average trading price of the Common Shares for each of the five trading days ending on, and including, the trading day immediately prior to the date of issuance.

Contact:

Heather Smiles

Vice President, Investor Relations & Corporate Development

[email protected]

1.416.900.3891

Neither the TSX Venture Exchange nor its RegulationServices Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracyof this release.

Cautionary Note Regarding Forward-Looking Statements

This news release may contain forward-lookingstatements and forward-looking information (together, “forward-looking statements”) within the meaning of applicable securitieslaws and the United States Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts,are forward-looking statements. Generally, forward-looking statements can be identified by the use of terminology such as “plans”, “expects”, “estimates”, “intends”, “anticipates”, “believes” or variationsof such words, or statements that certain actions, events or results “may”, “could”, “would”, “might”, “occur” or “be achieved”. Such forward-looking statements include, without limitation, statements regarding thetiming and deemed value of the issuance of Shares. Forward-looking statements are based on certain assumptions, and involve risks, uncertaintiesand other factors that could cause actual results, performance, and opportunities to differ materially from those implied by such forward-lookingstatements. Among the bases for assumptions with respect to the potential for additional government funding are discussions and indicationsof support from government actors based on certain milestones being achieved. Factors that could cause actual results to differ materiallyfrom these forward-looking statements are set forth in the management discussion and analysis and other disclosures of risk factors forElectra Battery Materials Corporation, filed on SEDAR+ at www.sedarplus.com and with on EDGAR at www.sec.gov. Other factors that couldlead actual results to differ materially include changes with respect to government or investor expectations or actions as compared tocommunicated intentions, and general macroeconomic and other trends that can affect levels of government or private investment. Althoughthe Company believes that the information and assumptions used in preparing the forward-looking statements are reasonable, undue relianceshould not be placed on these statements, which only apply as of the date of this news release, and no assurance can be given that suchevents will occur in the disclosed times frames or at all. Except where required by applicable law, the Company disclaims any intentionor obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

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