Mercer extends September shutdown at Rosenthal mill
Mercer International Inc. filed a current report describing an operational update at its German pulp mill, Mercer Rosenthal.
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Rhea-AI Filing Summary
Mercer International Inc. filed a current report describing an operational update at its German pulp mill, Mercer Rosenthal. The mill’s planned maintenance shutdown in September 2026, originally set for two weeks, will now cover the entire month of September.
The company states it is coordinating the extended shutdown with its production, wood procurement, logistics, and pulp sales teams, as well as with customers and other stakeholders. Mercer highlights its broader scale, with consolidated annual capacity of 2.1 million tonnes of pulp and significant lumber, engineered wood, pallet, and biofuel production across operations in Germany, the United States, and Canada.
8-K Event Classification
Key Figures
Key Terms
Regulation FD regulatory
maintenance shutdown technical
kraft pulp technical
biomass power plant technical
Inline XBRL regulatory
NBSK technical
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What operational change did Mercer International (MERC) disclose for September 2026?
Which facility is affected by Mercer International’s extended maintenance shutdown?
How large is Mercer International’s overall pulp production capacity?
What is the annual kraft pulp capacity of Mercer Rosenthal?
What other products and capabilities does Mercer Rosenthal have besides pulp?
How many people work at Mercer Rosenthal according to Mercer International?
AI-generated analysis. How Rhea-AI works. Not financial advice.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM
CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934
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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).
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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 June 30, 2026, Mercer International Inc. announced by press release that its German pulp mill, Mercer Rosenthal, will extend its maintenance shutdown, originally scheduled for two weeks, to cover the entire month of September 2026. 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 June 30, 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: June 30, 2026 |
By: |
/s/ Richard Short | ||||
| Richard Short | ||||||
| Chief Financial Officer | ||||||
Exhibit 99.1
NEWS RELEASE
Maintenance mill shutdown at Mercer Rosenthal in September
Rosenthal am Rennsteig, June 30, 2026 – Mercer International Inc., a global forest products company with operations in Germany, the U.S., and Canada, announces that its German pulp mill, Mercer Rosenthal, will extend its maintenance shutdown, originally scheduled for two weeks, to cover the entire month of September 2026.
Mercer is working with production, wood procurement, logistics, and pulp sales to coordinate this undertaking with our customers and stakeholders.
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, 960 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, please visit www.mercerint.com.
About Mercer Rosenthal
Mercer Rosenthal (MR) produces a variety of wood-based products such as kraft pulp, tall oil and lignin. Mercer Rosenthal also operates Thuringia’s largest biomass power plant (413 MW thermal / 57 MW electrical). This allows the mill to be completely energy self-sufficient while also feeding electricity into the public grid. MR produces 360,000 tonnes of kraft pulp (NBSK) annually for paper and tissue production. With a focus on the European market, the site also serves international demand. Mercer Rosenthal employs approximately 400 people, including apprentices. For more information, please visit www.mercerint.com.