Øystein Sjaastad Andreassen

ACM Ltd (ACM) is a private equity firm founded in 2000 by Pentti Karkkainen and Jeffrey van Steenbergen. The firm is headquartered in Calgary, Canada.

Aarbakke AS operates as a holding company that develops production monitoring tool that controls process in the company. Its tool Monza:engine production system ensure continuous status updates of order. The firm delivers solutions and parts to the oil and gas industry, focusing on subsea and downhole. They provides engineering, manufacturing, assembly and testing services. The company was founded in 1918 and is headquartered in Bryne, Norway.

Aquamarine Subsea AS provides drilling maintenance and related services. It also provides solutions for marine, energy, steel, and machinery industries. Its purpose is to invest in own shares, financial instruments, and investments in other companies, both equity and debt. The company was founded on September 23, 2013 and is headquartered in Lysaker, Norway.

Nammo AS develops and manufactures ammunition systems and rocket motors for both military and civilian customers. The firm operates through business units such as commercial ammunition, small and medium caliber ammunition, large caliber ammunition, shoulder fired systems, and aerospace propulsion. Its product portfolio includes shoulder-launched munitions systems, military and sports ammunition, rocket motors for military and space applications, and demilitarization services. The company was founded in 1998 and is headquartered in Raufoss, Norway.

Altus Intervention AS provides oilfield products, systems, and services for customers in the oil and gas industry worldwide. Its knowledge and technologies span from reservoir to production and through the life of a field. The firm offers a range of intervention services such as wireline, wireline tractor, and logging services. It gives drilling services activities for petroleum and natural gas. The company is headquartered in Stavanger, Norway.

Altus Intervention Group AS provides oil well intervention technology services. Its products include wireline tractor tools, rotational tools, scale removal tools, and collecting tools. It offers combinations of innovative and field-proven well intervention technologies and tools. The company was founded on September 24, 2013 and is headquartered in Stavanger, Norway.

Servatur Holding AS acquires, manages, and trades shares and participations. The company was founded on April 20, 2007 and is headquartered in Gjovik, Norway.