AM1 on Nasdaq Helsinki Ltd

Ahlstrom-Munksjö

Logo: Npttrangg, CC BY-SA 4.0, via Wikimedia Commons3

Finnish fiber company

Ahlstrom Oyj (previously Ahlstrom-Munksjö) is a manufacturer of fiber-based products. Renewable fibers represent about 95% of Ahlstrom's total fiber use.2 From Wikipedia, CC BY-SA 4.0

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Last updated Oct 16, 2026.

Overview

1851Founded1

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  • TickerAM1 on Nasdaq Helsinki Ltd1
  • Industryindustrial manufacturing1
  • HeadquartersHelsinki1
  • Websitewww.ahlstrom.com
  • Legal formosakeyhtiö1

Ahlstrom Oyj (previously Ahlstrom-Munksjö) is a manufacturer of fiber-based products. Renewable fibers represent about 95% of Ahlstrom's total fiber use. Ahlstrom operates in Europe, North and South America, and Asia. Most production sites are located in Europe and United States. The head office is located in Espoo, Finland.2

How it started

Munksjö

The creation of the Munksjö paper mill in 1862 was due to a chance meeting of two men: Janne Lundström, an inventor and industrialist from Jönköping, and Lars Johan Hierta, a prominent financier, publisher and politician.

Ahlstrom

Ahlstrom has its roots in Finland: the founder, Antti Ahlström, was one of Finland's most prominent 19th-century businessmen. The company was founded in 1851 and timber trading, shipping, and sawmill operations started to grow. The company focused on pulp, paper and timber production and machinery, later expanding to glassworks (Iittala and Karhula).

Ahlstrom's paper production began in Varkaus in 1921 on Europe's largest paper production machine. By the beginning of the 1930s, Ahlstrom had grown into Finland's largest industrial conglomerate. The outbreak of World War II led the company to convert much of its production to support the Finnish war effort. Following the war, the company played a major role in Finland's reconstruction and in its war reparations obligation. Ahlstrom alone accounted for nearly 15 percent of the country's total reparations. The company continued to expand into the 1950s, stepping up its engineering operations while also expanding into chemical wood processing technology.

Ahlstrom Corporation began to rapidly grow internationally in 1963, by acquiring a majority interest in a paper mill in Mathi close to Turin, Italy, that produced filter papers and rifle cartridge paper. This was the first significant international acquisition made by a Finnish company and made Ahlstrom a pioneer among major Finnish companies in internationalization. The town of Varkaus grew up around the A. Ahlström paper mills. In the 1930s, the Sunila Plant in Karhula (now Kotka), designed by Alvar Aalto, was built by Ahlström. In the 1980s, in a large swap of facilities, the Varkaus works were handed over to Enso Gutzeit (now Stora Enso).

From Wikipedia’s article on Ahlstrom-Munksjö, shared under CC BY-SA 4.0.2

Products and brands

  • fiber

Listed on Wikidata.1

Subsidiaries and ownership

Subsidiaries

  • Ahlstrom (United States)

From Wikidata.1

Acquisitions

  1. Succeeded Ahlström1
  2. Succeeded Munksjö1

Timeline

  1. 2017Went public Listed on Nasdaq Helsinki Ltd1
  2. 1851Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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