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 Receives Extension from NASDAQ to ResolveMinimum Price Requirement

Toronto, Ontario – (March 21, 2024) – Electra Battery Materials Corporation (NASDAQ: ELBM; TSX-V: ELBM) (“Electra” or the “Company”) announced today it has received an additional 180-days notice (the “Extension”) from The Nasdaq Stock Market LLC (“Nasdaq”) to regain compliance with the minimum bid price requirement ("Minimum Bid Requirement") of US$1.00 per share under Nasdaq’s Listing Rule 5550(a)(2).

The Extension has no immediate effect on the listing or trading of the Company’s common shares (the “Shares”) on the Nasdaq, and the Company's operations are not affected by the receipt of the Extension. Pursuant to the Extension, the Company has until September 16, 2024 to regain compliance with the Minimum Bid Requirement, during which time the Shares will continue to trade on Nasdaq.

If at any time before September 16, 2024, the bid price of the Shares closes at or above US$1.00 per Share for a minimum of 10 consecutive business days, the Company will regain compliance with the Minimum Bid Requirement. The Extension does not have any impact on the listing of the Shares on the TSX Venture Exchange.

Company Update

Further to its news releases dated February 27, 2024 and March 13, 2024, the Company has issued an aggregate of 843,039 Shares at a deemed issue price of $0.6439 per Share in satisfaction of a portion of the interest payable to certain of the holders of US$51 million principal amount of 8.99% senior secured convertible notes. The deemed issue price was calculated at 95% of the simple average of the volume weighted average trading price of the Shares for each of the five trading days ending on, and including, March 20, 2024.

About Electra Battery Materials

Electra is a processor of low-carbon, ethically-sourced battery materials. Currently focused on developing North America’s only cobalt sulfate refinery and a black mass refinery, Electra is executing a multipronged strategy to onshore the electric vehicle supply chain. Keys to its strategy are integrating black mass recycling and nickel sulfate production at Electra’s cobalt refinery located north of Toronto, advancing Iron Creek, its cobalt-copper exploration-stage project in the Idaho Cobalt Belt, and expanding cobalt sulfate processing into Bécancour, Quebec. For more information, please visit www.ElectraBMC.com.

Contact

Heather Smiles

VP, 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 regainingcompliance with the Minimum Bid Requirement. Forward-looking statements involve risks, uncertainties and other factors that could causeactual results, performance, and opportunities to differ materially from those implied by such forward-looking statements. Factors thatcould cause actual results to differ materially from these forward-looking statements are set forth in the management discussion and analysisand other disclosures of risk factors for Electra Battery Materials Corporation, filed on SEDAR+ at www.sedarplus.com and with on EDGARat www.sec.gov. Other factors that could cause actual results to differ materially include changes with respect to government or investorexpectations or actions as compared to communicated intentions, and general macroeconomic and other trends that can affect levels of governmentor private investment. Although the Company believes that the information and assumptions used in preparing the forward-looking statementsare reasonable, undue reliance should not be placed on these statements, which only apply as of the date of this news release, and noassurance can be given that such events will occur in the disclosed times frames or at all. Except where required by applicable law, theCompany disclaims any intention or obligation to update or revise any forward-looking statement, whether as a result of new information,future events or otherwise.

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