UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): ~~June~~July 16, 2025

Century Aluminum Company

(Exact Name of Registrant as Specified in Charter)

Delaware	001-34474	13-3070826
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

One South Wacker Drive
Suite 1000
Chicago
Chicago, Illinois	60606
Illinois		60606
(Address of Principal Executive Offices)	(Zip Code)
(Address of Principal Executive Offices)		(Zip Code)
(312) 696-3101
(312)		696-3101
(Registrant's telephone number, including area code)
(Registrant's telephone number, including area code)
N/A
N/A
(Former Name or Former Address, if Changed Since Last Report)
(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
☐			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class:	Trading Symbol(s)	Name of each exchange on which registered:
Common Stock, $0.01 par value per share	CENX	Nasdaq Stock Market LLC
		(Nasdaq Global Select Market)

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b– 2 of the Securities Exchange Act of 1934 (§ 240.12b–2 of this chapter).

Emerging growth company ☐  ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐  ¨

Item 57.0701. ~~Submission~~ ofRegulation ~~Matters~~FD ~~to a Vote of Security Holders~~Disclosure.

~~The~~On July 16, 2025, Century Aluminum Company ~~held~~(the “Company”) announced its ~~2025~~intention ~~Annual~~to ~~Meeting~~offer, pursuant to Rule 144A and Regulation S under the Securities Act of ~~Stockholders~~1933, as amended (the ~~"Annual~~“Securities ~~Meeting"~~Act”), onup ~~June~~to 16$400,000,000 ~~2025.~~aggregate Aprincipal ~~total~~amount of ~~86,524,850~~senior secured ~~shares~~notes ofdue 2032 (the ~~Company's~~“New ~~common~~Secured ~~stock~~Notes”). ~~were~~Additionally ~~present~~on orJuly ~~represented~~16, by2025, ~~proxy~~the atCompany announced that it had priced the ~~meeting,~~offering ~~representing~~of ~~approximately~~the 92New Secured Notes.~~74%~~ A copy of the ~~shares~~press ~~outstanding~~releases announcing the offering and ~~entitled~~the toresults ~~vote~~of atthe pricing of the New ~~Annual~~Secured ~~Meeting,~~Notes ~~thus~~are ~~providing~~attached ahereto ~~quorum~~as Exhibits 99.1 and 99.2, respectively.

The ~~number~~New ofSecured ~~votes~~Notes ~~cast~~have not ~~for,~~been ~~against~~registered orunder ~~withheld,~~the asSecurities ~~well~~Act asor ~~abstentions~~any state securities laws and ~~broker~~may ~~non-votes,~~not asbe ~~applicable~~offered or sold within the United States or to U.S. persons, except to qualified institutional buyers in reliance on the exemption from registration provided by Rule 144A and with respect to the New Secured Notes to ~~each~~certain ~~proposal~~persons ~~considered~~in atoffshore transactions in reliance on Regulation S. This Form 8-K shall not constitute an offer to sell or a solicitation of an offer to purchase the ~~Annual~~New ~~Meeting~~Secured isNotes asor ~~follows:~~any other securities, and shall not constitute an offer, solicitation or sale in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful.

~~Proposal~~The Noinformation provided pursuant to this Item 7.01, including Exhibits 99.1: ~~Election~~and of99.2 ~~Jarl~~attached ~~Berntzen~~hereto, ~~Jennifer~~is ~~Bush,~~being ~~Jesse~~furnished ~~Gary,~~and ~~Errol~~shall ~~Glasser~~not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, ~~Wilhelm~~as ~~van~~amended ~~Jaarsveld~~(the “Exchange Act”), ~~Andrew~~or ~~Michelmore~~otherwise subject to the liabilities of that section, ~~and~~nor ~~Tamla~~shall ~~Olivier~~it tobe deemed incorporated by reference into any filing under the ~~Company's~~Securities ~~Board~~Act of ~~Directors~~1933, as amended, or the Exchange Act, regardless of any general incorporation language in any such filing.

~~The~~Item ~~seven~~9.01. ~~persons~~Financial ~~nominated~~Statements ~~to serve as directors of the Company received the following number of votes~~ and ~~were elected as directors to serve a one-year term expiring at the annual meeting of stockholders in 2026:~~ Exhibits.

Nominee	For	Withheld	Broker Non-Votes
Jarl Berntzen	80,547,008	1,497,099	4,480,743
Jennifer Bush	81,228,621	815,486	4,480,743
Jesse Gary	81,606,407	437,700	4,480,743
Errol Glasser	81,247,934	796,173	4,480,743
Wilhelm van Jaarsveld	81,609,441	434,666	4,480,743
Andrew Michelmore	77,963,733	4,080,374	4,480,743
Tamla Olivier	81,261,981	782,126	4,480,743

(d) Exhibits

Proposal No. 2: Ratification of Appointment of Independent Registered Public Accounting Firm

Exhibit Number	Description
99.1	Press Release of Century Aluminum Company dated July 16, 2025
99.2	Press Release of Century Aluminum Company dated July 16, 2025
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

~~The stockholders ratified the appointment of Deloitte & Touche LLP as the independent registered public accounting firm for the Company for the year ending December 31, 2025 as follows:~~SIGNATURES

For						Against						Abstain						Broker Non-Votes
85,229,872						1,257,849						37,129						-

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 hereunto duly authorized.

Proposal No. 3: Advisory Vote on the Compensation of Named Executive Officers

		CENTURY ALUMINUM COMPANY

Date: July 17, 2025	By:	/s/ John DeZee
		Name:	John DeZee
		Title:	Executive Vice President, General Counsel and Secretary

The stockholders approved, through a non-binding advisory vote, the compensation of the Company's named executive officers as described in the Company's proxy statement as follows:

For						Against						Abstain						Broker Non-Votes
72,790,279						9,221,179						32,649						4,480,743

Proposal No. 4: Proposal to Approve the 2025 Century Aluminum Company Incentive Plan

The stockholders approved the 2025 Century Aluminum Company Incentive Plan as described in the Company's proxy statement as follows:

For						Against						Abstain						Broker Non-Votes
80,715,992						1,310,122						17,993						4,480,743

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number						Description
104						Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 hereunto duly authorized.

CENTURY ALUMINUM COMPANY

Date:

June 18, 2025

By:

/s/ John DeZee

Name:

John DeZee

Title:

Executive Vice President, General Counsel and Secretary

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