UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 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): September 17, 2026

ORION S.A.

(Exact name of registrant as specified in its charter)

Grand Duchy of Luxembourg

001-36563

00-0000000

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

1700 City Plaza Drive, Suite 300

Spring, Texas

77389

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (281) 318-2959

(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))

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

Title of each class		Trading Symbol		Name of each exchange on which registered
Common Shares, no par value		OEC		New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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 8.01

Other Events

On September 17, 2026, Orion S.A. issued a press release announcing the declaration of an interim dividend to be paid in the first quarter of 2027, a copy of which is attached as Exhibit 99.1 hereto and incorporated by reference herein.

Item 9.01

Financial Statements and Exhibits

(d) Exhibits

Exhibit No.		Description

99.1		Press Release of Orion S.A. dated September 17, 2026

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, thereunto duly authorized.

	Orion S.A.

	By:	/s/ Jon Puckett
	Name:	Jon Puckett
	Title:	Chief Financial Officer

Date: September 17, 2026