Form 8-K

8-K — MERCER INTERNATIONAL INC.

Accession: 0001193125-26-368838

Filed: 2026-08-26

Period: 2026-08-26

CIK: 0001333274

SIC: 2611 (PULP MILLS)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — d386051d8k.htm (Primary)

EX-99.1 (d386051dex991.htm)

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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): August 26, 2026

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 7.01. Regulation FD Disclosure.

The information furnished under Item 7.01 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 August 26, 2026, Mercer International Inc. (the “Company”) announced by press release that the Government of Canada, through Prairies Economic Development Canada, committed CDN$20 million (approximately US$14 million) in financial support to its subsidiary, Mercer Peace River Pulp Ltd. (“MPR”), under the Regional Tariff Response Initiative. The support consists of a CDN$1 million non-repayable contribution and a CDN$19 million repayable contribution, with repayment scheduled to commence in 2031, subject to the terms of the contribution agreement.

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 August 26, 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 hereunto duly authorized.

MERCER INTERNATIONAL INC.

Date: August 26, 2026

By:

/s/ Richard Short

Richard Short

Chief Financial Officer

EX-99.1

Filename: d386051dex991.htm · Sequence: 2

EX-99.1

Exhibit 99.1

PRESS RELEASE

For Immediate Release

Mercer

International Inc. Announces C$20 Million (Approximately US$14 Million) in Government of Canada Support for its Peace River Mill

NEW

YORK, NY, August 26, 2026 — Mercer International Inc. (“Mercer” or the “Company”) (Nasdaq: MERC), a global forest products company today announced that the Government of Canada, through Prairies Economic

Development Canada (“PrairiesCan”), has committed C$20 million (approximately US$14 million) in financial support to its subsidiary, Mercer Peace River Pulp Ltd. (“MPR”), under the Regional Tariff Response Initiative.

The support consists of a C$1 million non-repayable contribution and a C$19 million repayable

contribution, with repayment scheduled to commence in 2031, subject to the terms of the contribution agreement. The funding was announced today by The Honourable Eleanor Olszewski, Minister of Emergency Management and Community Resilience and

Minister responsible for PrairiesCan, during a visit to the MPR mill in northern Alberta.

The funding provides capital to support MPR’s broader

transformation plan, designed to improve productivity and modernize the mill. This includes improvements to prepare the facility for the expansion of bio-energy production and carbon capture and storage. The

funding builds on work already underway at the mill, including the carbon dioxide capture demonstration unit.

“This investment is an important step

in the continued modernization of Mercer Peace River,” stated Juan Carlos Bueno, President and CEO of Mercer. “It supports improvements to the mill’s productivity and competitiveness and reflects the important role MPR plays within

northern Alberta’s forest products economy. I also want to recognize the work of our Peace River team in advancing these improvements.”

“Canada did not choose this trade conflict with the United States, but we will stand up for the workers, businesses and communities under

pressure,” said The Honourable Eleanor Olszewski, Minister of Emergency Management and Community Resilience and Minister responsible for Prairies Economic Development Canada. “For more than 35 years, Mercer Peace River has been an anchor

of northern Alberta’s economy. This C$20 million investment will help the mill modernize, compete and protect the good jobs that families across the region depend on as we build a stronger, more resilient Canadian economy.”

Mercer International Inc. | www.mercerint.com

Corporate Office: Suite 1120, 700 West Pender Street,

Vancouver, BC, V6C 1G8, Canada | +1 604 684 1099

US Office: 14900 Interurban Avenue South, Suite 282

Seattle, Washington, USA 98168 | +1 206 674 4639

About Mercer Peace River Pulp

MPR operates within northern Alberta’s integrated forest products sector, where fiber from the region’s mixed boreal forests

supports a range of products and uses. Sawlogs suitable for lumber are processed by regional sawmills, while pulpwood and residual fiber from sawmilling — including chips and bark — support pulp and energy production. Together, these

fiber flows connect forest management, regional sawmilling, pulp production and renewable energy generation, supporting broader utilization of the region’s fiber supply.

About Mercer International Inc.

Mercer

International Inc. is a global forest products company with operations in Germany, the United States and Canada with consolidated annual production capacity of 2.1 million tonnes of pulp, 1,023 million board feet of lumber, 210,000 cubic

meters of cross-laminated timber, 45,000 cubic meters of glulam, 17 million pallets and 230,000 metric tonnes of biofuels. For further information about the Company, please visit www.mercerint.com.

Forward-Looking Statements

The

preceding includes forward-looking statements which involve known and unknown risks and uncertainties which may cause our actual results in future periods to differ materially from forecasted results. Words such as “expects”,

“anticipates”, “are optimistic that”, “projects”, “intends”, “designed”, “will”, “believes”, “estimates”, “may”, “could” and

variations of such words and similar expressions are intended to identify such forward-looking statements. Among those factors which could cause actual results to differ materially are the following: the highly cyclical nature of our business, raw

material costs, our level of indebtedness, ability to refinance or obtain any necessary financing on acceptable terms in the future, competition, foreign exchange and interest rate fluctuations, our use of derivatives, expenditures for capital

projects, environmental regulation and compliance, disruptions to our production, market conditions and other risk factors listed from time to time in our SEC reports.

Mercer International Inc. | www.mercerint.com

Corporate Office: Suite 1120, 700 West Pender Street,

Vancouver, BC, V6C 1G8, Canada | +1 604 684 1099

US Office: 14900 Interurban Avenue South, Suite 282

Seattle, Washington, USA 98168 | +1 206 674 4639

APPROVED BY:

William D. McCartney

Chairman of the Board

+1 (604) 684-1099

Juan

Carlos Bueno

Chief Executive Officer

+1 (604) 684-1099

Mercer International Inc. | www.mercerint.com

Corporate Office: Suite 1120, 700 West Pender Street,

Vancouver, BC, V6C 1G8, Canada | +1 604 684 1099

US Office: 14900 Interurban Avenue South, Suite 282

Seattle, Washington, USA 98168 | +1 206 674 4639

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