Eagle Filters Group

Eagle Filters Group is a Finnish industrial company whose principal operating business is Eagle Filters Ltd, a manufacturer of air-intake filtration systems for gas turbines and other industrial applications. The group also develops energy-saving and filtration-efficiency-enhancing fibre solutions for industrial and building uses, and has produced FFP2 and FFP3 respirators for healthcare professionals and industrial customers. Its identity is therefore centered on engineered filtration rather than on consumer air-purification products. The operating company was founded in Kotka, Finland, in 1995. The name Eagle reflects Kotka: the Finnish word for the city means “eagle” in English. The company’s original premise was that imported filters used in Finnish energy-production facilities did not consistently meet the required quality level. Its founders worked with ideas developed in cooperation with VTT Technical Research Centre of Finland and began supplying filtration solutions to gas-turbine power plants. Imatran Voima became an important early customer and helped the business gain access to international projects. Eagle Filters completed its first export sale to Hungary in 1999 and subsequently built a presence across multiple continents. During the early 2000s, Eagle Filters concentrated on the relationship between clean turbine-inlet air, power-plant output, fuel consumption, and maintenance. It developed and patented an inlet-air filtration solution intended to limit the efficiency losses associated with contaminated or inadequately filtered air. The company positions these systems as a way to improve turbine performance, reduce operating and maintenance costs, and extend equipment life compared with lower-cost alternatives. Its product range covers coarse and medium filtration, fine filtration, and EPA or semi-HEPA filtration classes used in gas-turbine intake systems. The company briefly considered broadening into residential air-conditioning filtration in the late 2000s, but ultimately retained its emphasis on gas-turbine applications. Before its industrial transformation, the listed parent was an investment and development company. It operated under the names Cleantech Invest Oyj and later Loudspring Oyj or Loudspring Plc, investing in businesses associated with clean technology and resource efficiency. In 2021, management made a strategic decision to turn the parent from an investment-focused company into an industrial group built around Eagle Filters. In September of that year, the parent acquired the remaining 15% of Eagle Filters Oy from founder Juha Kariluoto, making the subsidiary wholly owned. The stated direction was to devote available resources progressively to Eagle Filters’ growth while disposing of other holdings over time. The corporate rebranding was completed after the company’s general meeting on 27 October 2022, when the parent changed its name to Eagle Filters Group Plc. Trading under the new name and symbol began on Nasdaq Nordic First North Finland and Nasdaq Nordic First North Sweden on 14 November 2022. The group later obtained approval to delist from First North Sweden, effective 12 May 2023, citing low trading volumes. In January 2023, its unlisted, high-vote Series K shares were converted into listed Series A shares with one vote each, leaving all shares in the company in the listed A-share class. The group has continued to carry certain assets inherited from the former Loudspring investment structure. By the first half of 2023, its reported subsidiaries included Eagle Filters Ltd, Lumeron Ltd, and Loudspring Sweden Ltd. The company has also reassessed the value of several legacy investments amid uncertainty in fair-value measurement. This leaves Eagle Filters as the central operating asset and makes the group’s current strategic profile substantially more industrial and filtration-oriented than its predecessor’s investment-company profile. The company’s market opportunity is tied to power-generation efficiency, industrial air quality, equipment protection, and demand for specialized filtration in energy and process industries.

Eagle Filters began in Kotka, Finland, in 1995 as a specialist supplier of air-filtration products for energy-production facilities. The business was founded in response to perceived shortcomings in the quality of imported filters used in Finnish power plants. Its founders developed technical concepts with input from VTT Technical Research Centre of Finland and initially focused on filtration for gas-turbine installations. The company’s name derives from Kotka, whose Finnish name means “eagle.” An early commercial relationship with Imatran Voima provided an important reference and helped Eagle Filters participate in projects outside Finland. The company made its first export sale to Hungary in 1999 and later supplied customers on several continents. In the early 2000s, it concentrated on the effect of inlet-air quality on gas-turbine performance. It developed and patented a filtration solution intended to reduce fuel use, avoid typical output losses associated with dirty intake air, and lower maintenance requirements. The company considered entering residential air-conditioning filtration during the late 2000s, but decided to keep its main emphasis on gas-turbine air intake. Eagle Filters’ product portfolio developed across several filtration stages, including G4-M6, MERV 7-12, F7-F9, MERV 13-15, and EPA or semi-HEPA E10-E12 and MERV 16 products. These systems are marketed for use in energy and process industries where turbine efficiency, machinery protection, and operating cost are important. The business later expanded its stated scope to include fibre solutions that improve energy performance or filtration efficiency in industrial and building applications, as well as FFP2 and FFP3 respirators for healthcare and industrial use. The listed parent followed a different path before adopting the Eagle Filters identity. It had previously operated as Cleantech Invest Oyj and then Loudspring Oyj or Loudspring Plc, functioning as an investment and development company with interests in clean technology and resource-efficiency businesses. In 2021, the parent approved a strategic transition toward an industrial operating model centered on Eagle Filters. In September 2021, it purchased the remaining 15% of Eagle Filters Oy from founder Juha Kariluoto. The announced intention was to use available resources to grow Eagle Filters and gradually sell other holdings. The parent changed its name to Eagle Filters Group Plc at a general meeting on 27 October 2022. The new name and trading identity were introduced on Nasdaq Nordic First North Finland and Nasdaq Nordic First North Sweden on 14 November 2022. A subsequent application to withdraw from First North Sweden was approved in March 2023, and the Swedish listing ended on 12 May 2023 because trading volumes were low. In January 2023, the company also simplified its share structure by converting the unlisted Series K shares, which had carried enhanced voting rights, into listed Series A shares with one vote per share. The group retained several investments from its Loudspring period. By the first half of 2023, the reported subsidiary structure comprised Eagle Filters Ltd, Lumeron Ltd, and Loudspring Sweden Ltd. It also held interests in companies including Nuuka Solutions and Enersize. During 2023, the company recognized impairment and valuation changes affecting legacy holdings as uncertainty around fair-value measurement increased. These actions reinforced Eagle Filters’ role as the group’s main operating asset. The group’s current business profile is consequently that of a focused industrial filtration company with a residual portfolio of former investment-company assets.

• 2023

  Share-class conversion

  [1]Eagle Filters Groupen.wikipedia.org

  Series K shares with enhanced voting rights were converted into listed Series A shares with one vote each.

• 2023

  Swedish listing discontinued

  [1]Eagle Filters Groupen.wikipedia.org

  The company’s First North Sweden listing ended on 12 May following approval attributed to low trading volumes.

• 2022

  Corporate rebrand approved

  [1]Eagle Filters Groupen.wikipedia.org

  The parent changed its name from Loudspring Plc to Eagle Filters Group Plc at its 27 October general meeting.

• 2022

  New trading identity introduced

  [1]Eagle Filters Groupen.wikipedia.org

  The company began trading under the Eagle Filters Group name on Nasdaq First North Finland and Sweden on 14 November.

• 2021

  Strategic shift toward an industrial group

  [1]Eagle Filters Groupen.wikipedia.org

  Loudspring decided to move away from its investment-company model and focus its resources on Eagle Filters and the industrial filtration business.

• 2021

  Eagle Filters becomes wholly owned

  [1]Eagle Filters Groupen.wikipedia.org

  The parent acquired the remaining 15% of Eagle Filters Oy from founder Juha Kariluoto.

• 1999

  First export sale

  [1]Eagle Filters Groupen.wikipedia.org

  The company completed its first export transaction in Hungary and subsequently expanded its international project presence.

• 1995

  Eagle Filters founded in Kotka

  [1]Eagle Filters Groupen.wikipedia.org

  Eagle Filters was established in Kotka, Finland, to develop and supply improved air-filtration solutions for energy-production facilities.

A specialist industrial filtration group positioned around gas-turbine performance, energy efficiency, equipment protection, and high-efficiency air filtration.

• Industrial air filtration

  Gas-turbine inlet-air filters

  Eagle Filters’ core product family is designed for the air-intake systems of gas turbines used in power generation and process industries. The filters are intended to remove airborne contaminants before air enters the turbine, helping protect equipment and maintain operating performance. The company markets the systems as supporting fuel efficiency, reducing maintenance requirements, and extending equipment life compared with lower-cost filtration solutions. The range covers multiple filtration stages and classes, allowing systems to be configured for different environmental and operating conditions.

• High-efficiency filtration

  Fine and EPA filtration products

  The company offers fine filters in F7-F9 and MERV 13-15 classes, together with EPA or semi-HEPA products in E10-E12 and MERV 16 classes. These products are intended for applications requiring tighter control of particulates and improved protection of downstream turbine equipment. Their use is particularly relevant where dust, salt, moisture, or other contaminants can affect turbine output, component wear, or maintenance intervals.

• Industrial and building materials

  Fibre efficiency solutions

  Eagle Filters Group also describes energy-saving and filtration-efficiency-enhancing fibre solutions for industrial and building applications. These solutions broaden the group’s technology scope beyond replacement filter elements and target applications in which the structure or material of a fibre product can influence energy consumption, airflow, or filtration performance. Detailed product names and commercial launch dates are not specified in the available reference material.

• Respiratory protection

  FFP2 and FFP3 respirators

  The group has produced FFP2 and FFP3 respirators for healthcare professionals and industrial users. These products represent a personal-protection application of the company’s filtration capabilities, separate from its main gas-turbine business. The available material identifies the product classes and target users but does not provide a complete model range, launch chronology, or current sales mix.

• 2023

  Convert Series K shares into Series A sharesOther

  Background

  The company had two share classes, with unlisted Series K shares carrying 20 votes and listed Series A shares carrying one vote.

  Action taken

  The extraordinary general meeting on 18 January 2023 approved conversion of the K shares into listed A shares.

  Aftermath

  All company shares became listed A shares with one vote each; the reported total was 273,638,464 shares.

  Source

• 2023

  Exit the Nasdaq First North Sweden listingStrategy

  Background

  The company reported low trading volumes on its Swedish First North listing.

  Action taken

  It applied for delisting from Nasdaq First North Sweden and received approval in March 2023.

  Aftermath

  The Swedish listing ended on 12 May 2023, leaving Finland as the stated First North listing venue.

  Source

• 2023

  Reassess legacy investment holdingsOther

  Background

  The group retained investments from its former Loudspring structure and faced greater uncertainty in measuring their fair values.

  Action taken

  The company impaired several holdings and later decided to recognize the impairment and reassess its Nuuka Solutions holding at zero.

  Aftermath

  The inherited portfolio was largely revalued at zero, apart from the operating subsidiaries and assets specifically retained by the group.

  Source

• 2022

  Rename the listed parent Eagle Filters GroupStrategy

  Background

  The company’s former Loudspring identity no longer reflected its intended industrial focus on filtration.

  Action taken

  At the 27 October 2022 general meeting, the parent changed its name to Eagle Filters Group Plc and introduced the new trading identity in November.

  Aftermath

  The company traded under the Eagle Filters Group name on First North Finland and First North Sweden from 14 November 2022.

  Source

• 2021

  Transform the parent from an investment company into an industrial groupStrategy

  Background

  The listed parent had historically invested in clean-technology and resource-efficiency companies under the Cleantech Invest and Loudspring identities. Management identified Eagle Filters as the principal operating asset and decided to build the group around it.

  Action taken

  The company resolved to direct available resources progressively toward Eagle Filters, sell other holdings over a reasonable period, and acquire the remaining minority interest in the operating company.

  Aftermath

  The remaining 15% of Eagle Filters was acquired from founder Juha Kariluoto in September 2021, and the parent later adopted the Eagle Filters Group name.

  Source

1. 1Eagle Filters Groupen.wikipedia.org