What GC Rieber does

GC Rieber is a privately held Norwegian industrial group headquartered at Damsgårdsveien 14 in Bergen, founded in 1879 and operating across multiple unrelated industrial verticals through wholly owned subsidiaries and acquisition platforms. Its portfolio encompasses GC Rieber VivoMega, which produces high-concentration omega-3 oils from fish oil and algae at a concentrate factory in Kristiansund for nutraceutical, food, beverage, pharmaceutical and personal-care customers globally; Biomega Group (acquired January 2026), which runs biorefineries at Skaganeset in Øygarden and Hirtshals, Denmark, that process salmon rest raw materials into marine proteins and marine oils using patented continuous enzymatic hydrolysis technology; GC Rieber Shipping, which owns and charters the WindKeeper SWATH-design Service Operation Vessels (SOV) for the offshore wind market, with an order of two vessels (about 110 million EUR total) at Cemre Shipyard in Turkey and options for two more; GC Rieber Minerals, a Nordic industrial salt supplier (including circular salts from fly ash byproducts) across Norway, Denmark, Iceland and the Faroe Islands; GC Rieber Eiendom, which owns, develops and manages approximately 270,000 square meters of residential, hotel and commercial property across Bergen-area locations such as Solheimsviken, Marineholmen, Bontelabo, Damsgård, Flesland and Birkeland; SHM Solutions (majority stake acquired February 2026), which supplies cranes, plate locks, winches and hydraulic systems for aquaculture service vessels; and GC Rieber Fortuna, which manages two investment mandates—SCALEIT (400 MNOK, established July 2025, focused on maritime and healthcare growth companies) and GROWIT (early-stage Foodtech, Proptech and Industry 4.0). GC Rieber Compact, an emergency-rations and specialized-nutrition business, was divested to Lorenz in December 2024.

The group employs more than 250 people across portfolio companies and runs a sales-led B2B model with international distribution for VivoMega and Biomega ingredients, direct chartering of WindKeeper vessels to offshore wind operators, direct salt supply to Nordic industrial and municipal customers, and direct leasing of commercial and residential real estate in the Bergen region. Proprietary technology stacks include Biomega's patented continuous enzymatic hydrolysis process, SHM Solutions' patented SHM Platelås plate lock and crane systems, and the WindKeeper SWATH design with Charge2Work all-electric field operation. The Krohnen office building in Solheimsviken was developed by GC Rieber Eiendom and holds BREEAM NOR Excellent, NOLLCO2 and Paris Proof certifications.

Ownership is split roughly 50/50 between the Rieber family (4th and 5th generation descendants of founder Gottlieb Christian Rieber) and GC Riber Fondene, a structure of six foundations supporting culture, research and health—which means approximately half of earnings are returned to community benefit. Professional management was introduced in June 2023 when Jan Roger Bjerkestrand succeeded family-CEO Paul Christian Rieber after 143 years of family stewardship; the group has held UN Global Compact membership since 2010 and reports sustainability under the VSME framework.

Name

GC Rieber

Legal name

GC Rieber AS

Website

https://gcrieber.no

Company type

Private

Founded year

1879

Operating status

Operating

Headcount range

251–500 employees

Short description

GC Rieber is a privately held Norwegian industrial group founded in 1879, operating ~250+ employees across omega-3 concentrates (VivoMega, Biomega), offshore wind service vessels (WindKeeper SOVs), Nordic industrial salts, Bergen real estate (~270,000 sqm), and growth-stage investment mandates (SCALEIT, GROWIT), serving global nutraceutical, food, aquaculture, maritime and municipal B2B customers.

Ownership category

akta.pro rank

Product category

Diversified Industrial Holdings

NAICS

Seafood Product Preparation and Packaging (31171)

SIC

Prepared Fresh Or Frozen Fish & Seafoods (2092), Wholesale-Chemicals & Allied Products (5160)

akta.pro primary industry

Sustainable & Alternative-Protein Aquafeed (Insect, Algae, Single-Cell, Byproduct-Based) (AFADADAM)

Keywords

• Omega-3 concentrates
• Marine ingredient processing
• Offshore wind vessels
• Aquaculture deck equipment
• Industrial salt supply

Headquarters

HQ city

Bergen

HQ country

Norway

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D

Revenue model

1. Omega-3 and Marine Ingredients: GC Rieber VivoMega produces and sells high-concentrated omega-3 ingredients from fish oil and microalgae to international customers. Biomega processes marine by-products into proteins and oils for animal feed and human nutrition.
2. Shipping and Maritime Operations: GC Rieber Shipping operates vessels and develops maritime projects including WindKeeper SOV vessels for offshore wind. Revenue from vessel chartering and maritime services.
3. Real Estate: GC Rieber Eiendom owns, develops and operates property including residential, hotel and commercial real estate. Manages approximately 270,000 square meters.
4. Minerals and Salts: GC Rieber Minerals produces and supplies industrial salts, including circular salts from fly ash byproducts, serving Nordic markets.
5. Investment Returns: GC Rieber Fortuna and GROWIT invest in growth companies with focus on returns through active ownership. SCALEIT mandate manages 400 MNOK capital base.

Go-to-market motion3 records

Distribution channels4 records

Marketing channels4 records

Core offering

GC Rieber is a diversified Norwegian industrial group operating portfolio companies that produce and sell high-concentration omega-3 ingredients from fish oil and microalgae (VivoMega), maritime deck equipment for aquaculture service vessels (SHM Solutions), marine proteins and oils from salmon by-products (Biomega), industrial salts including circular salts from fly ash (Minerals), offshore wind service operation vessels (WindKeeper/GC Rieber Shipping), and real estate including a climate-neutral office building in Solheimsviken. The group also invests in growth-stage and established scaling companies through SCALEIT (400 MNOK mandate) and GROWIT early-stage programs.

Product overview

GC Rieber is a Norwegian industrial group established in 1879, consisting of portfolio companies operating in diverse sectors. The portfolio includes GC Rieber VivoMega (high-concentrated Omega-3 oils from fish oil and microalgae), GC Rieber Minerals (Nordic salt and mineral supplier), GC Rieber Shipping (vessel owner with WindKeeper SOV for offshore wind), GC Rieber Eiendom (real estate development and management), GC Rieber Fortuna (investment company managing SCALEIT and GROWIT mandates), Biomega Group (marine biotech processing salmon rest raw materials), and SHM Solutions (maritime deck equipment for aquaculture). The group also developed Krohnen, a certified climate-neutral office building. The company is approximately 50% owned by the Rieber family and 50% by GC Rieber Fondene (foundations supporting health, education, and community benefit).

Differentiator

Problem solved

Functional benefit

Products and services

• WindKeeper An innovative Service Operation Vessel (SOV) based on Small Water Area Twin Hull (SWATH) methodology and design for offshore wind farm operations. Provides significantly lower environmental footprint compared to monohull vessels, reduced emissions from day one, extended operational window with safe and efficient sea and station keeping performance, and Charge2Work capability for fully electric operation in field.
• GC Rieber VivoMega Omega-3 Concentrates Leading producer of high-concentrated Omega-3 oils from fish oil and microalgae. Operates a high-tech concentration factory in Kristiansund producing some of the market's best Omega-3 concentrates sold to customers worldwide. Products support brain health, cognitive function, and preventive nutrition applications across dietary supplements, functional foods, beverages, pharmaceuticals, and personal care.
• Algae-Based Omega-3 Concentrate Plant-based Omega-3 EPA and DHA concentrate produced from microalgae at commercial scale, targeted at consumers and manufacturers seeking plant-based alternatives to fish oil without compromising on quality.
• GC Rieber Minerals Industrial Salts Supplier of industrial salts and minerals in the Nordic countries spanning the entire value chain from salt production to purchasing, transport, storage/handling and delivery to customers. Pursues sustainability goals as the first Nordic supplier to issue EPDs for sea salt and rock salt, with exploration of circular salts from fly ash residue.
• GC Rieber Eiendom Real Estate Services Real estate company that owns, develops and operates residential, hotel, and commercial property while working on area development in Solheimsviken, Marineholmen, Bontelabo, Damsgård, Flesland, and Birkeland. Manages a property portfolio of approximately 270,000 square meters with around 40 employees.
• GC Rieber Shipping Maritime Services Shipping company developing and operating vessels for maritime projects with focus on the renewable energy sector. Strategy emphasizes creating value through project development as a project house with long experience in developing ship designs and investing in profitable and sustainable maritime projects.
• Biomega Group Marine Ingredients Marine biotech company processing Atlantic salmon rest raw materials into functional ingredients including marine proteins, marine oils, and mineral fractions for animal feed and human nutrition. Operates biorefineries at Skaganeset, Norway and Hirtshals, Denmark, using patented continuous enzymatic hydrolysis for stable operation and consistent quality.
• SHM Solutions Maritime Deck Equipment Leading Norwegian supplier of maritime deck equipment and technological systems for service vessels, particularly in the aquaculture sector. Products include the patented SHM Platelås (most powerful plate lock on the market), SHM 225 cranes, rope locks, winches, and control and hydraulic systems. Operates with 40 employees across offices in Molde, Harstad, and Stord.
• SCALEIT Investment Mandate Investment mandate under GC Rieber Fortuna for established growth and scaling companies, managing a capital base of 400 MNOK with particular focus on the maritime sector and healthcare. Invests as minority or majority owner, functioning as a long-term partner for companies with clear growth potential.
• GROWIT Early-Stage Investment Mandate Investment mandate targeting early-stage companies within Foodtech, Proptech, and Industri 4.0 as part of GC Rieber Fortuna's investment strategy for startup companies with sustainable business models.

Quantifiable outcome

• Fishmeal and fish oil market growing at 7.5% CAGR to USD 18.2B by 2036
• +2 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• SHM Solutions AScoreStrategic or Co-development Partner · 9 February 2026GC Rieber Fortuna acquired majority stake in SHM Solutions AS, a leading supplier of deck equipment and systems for aquaculture service vessels. This is GC Rieber Fortuna's first investment in the fish farming industry, aiming to leverage capital and expertise to scale the company internationally.
• Biomega Group AScoreStrategic or Co-development Partner · 20 January 2026GC Rieber AS acquired 100% of Biomega Group AS including Biomega Norway AS and Biomega Denmark A/S. Biomega processes marine by-products into high-value ingredients for animal feed and human nutrition, strengthening GC Rieber's role in the value chain for marine raw materials from salmon and trout.
• LinstowcoreStrategic or Co-development Partner · 14 July 2025GC Rieber Eiendom acquired 50% stake in Linstow's Bergen properties and took over management and further development. Partnership formalized through new holding company with equal ownership.
• Bergen NæringsrådcoreStrategic or Co-development Partner · 16 June 2023GC Rieber Gruppen became a main partner of Bergen Chamber of Commerce (Bergens Næringsråd), contributing unique expertise and background within its extensive business areas regionally, nationally and internationally.
• LorenzminorStrategic or Co-development PartnerGerman family-owned company Lorenz acquired GC Rieber Compact AS in December 2024. Compact produces emergency food and specialized nutritional products for the international disaster and emergency preparedness market.
• Cemre ShipyardcoreStrategic or Co-development PartnerGC Rieber Shipping ordered two WindKeeper vessels at Cemre shipyard in Turkey, with options for two additional vessels. First vessel delivery expected Q1 2025.

Scale indicators8 records

Recent moves10 records

Expansion highlights6 records

Broad incumbents

• Croda International: Global specialty-ingredients incumbent with a marine/health omega-3 and lipids business, a larger diversified competitor to GC Rieber's omega-3 ingredient unit.
• Orkla: Norwegian diversified industrial holding with branded consumer, ingredient and financial-investment portfolios, offering a broad multi-sector holding comparison to GC Rieber.
• Aker ASA: Large Norwegian industrial investment company with holdings across energy, maritime and marine bioscience; a broader, larger analog to GC Rieber's active-ownership industrial holding approach.

Direct peers

• Pelagia (Epax): Norwegian marine-ingredient group whose Epax business is a leading omega-3 concentrate producer, directly overlapping with GC Rieber VivoMega's high-concentration omega-3 offering.
• Golden Omega: Global producer of high-concentration omega-3 fish-oil concentrates for nutraceuticals and pharma, competing directly with GC Rieber VivoMega in the same ingredient category.
• Ferd: Norwegian family-owned diversified investment and industrial holding company with active ownership across multiple sectors, closely mirroring GC Rieber's family/foundation-backed holding structure.
• Hofseth BioCare: Norwegian marine-ingredient company converting salmon rest raw material into proteins, oils and calcium for nutrition; directly comparable to GC Rieber's Biomega and VivoMega marine-ingredient operations.
• Wilh. Wilhelmsen Holding: Norwegian family-controlled maritime industrial holding spanning shipping, services and investments, comparable to GC Rieber's diversified shipping-plus-industrial holding model.

Regional players

• Scanbio Marine Group: Norwegian producer of marine proteins and oils from fish by-products for feed and nutrition, comparable to Biomega's by-product valorization in the same Nordic market.

Others

• Umoe: Norwegian family-owned diversified industrial and investment group across renewables, seafood and services; a thematically related private holding comparable in ownership model to GC Rieber.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/5118105

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments2 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GC Rieber