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): November 6, 2025

MERCER INTERNATIONAL INC.

(Exact name of Registrant as Specified in Its Charter)

     Washington

     000-51826

     47-0956945

     (State or Other Jurisdiction
of Incorporation)

     (Commission File Number)

     (IRS Employer
Identification No.)

Suite 1120, 700 West Pender Street, Vancouver, British Columbia, Canada, V6C 1G8

(Address of Principal Executive Offices)

Registrant’s Telephone Number, Including Area Code: (604) 684-1099

Not Applicable

(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 (see General Instructions A.2. below):


☐	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, par value $1.00 per share

     MERC

     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 2.02. Results of Operations and Financial Condition

The information furnished under Item 2.02 of this Current Report shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

On November 6, 2025, Mercer International Inc. (the “Company”) announced by press release the Company’s results for its third quarter ended September 30, 2025. A copy of such press release is furnished as Exhibit 99.1 to this Current Report.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.


Exhibit Number		Description
99.1		Press Release dated November 6, 2025
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.


	MERCER INTERNATIONAL INC.

Date: November 6, 2025	By:	/s/ Richard Short
		Richard Short
		Chief Financial Officer

MERCER INTERNATIONAL INC. 8-K