Mainmast AS

928 349 217 ↗Other technical consultancy
identity
AS · est 2021OsloParent · 6 subsidiaries
Brreg · companies
Employees
CEO · since
Chair · since2024-12-03Thomas Dessen Nielsen
headcount series appears after two register changes
Roles from Brreg, shown for business contact only. No birth date is shown or exported (purpose limitation, GDPR Art. 6(1)(f)).
Brreg · company_people
2 registered roles
Styrets lederThomas Dessen Nielsen Multiple boards2024-12-03
StyremedlemPeter-Emil Soltvedt Johannessen Multiple boards2024-12-03
NOK, amounts in thousands
20242025
Revenue1 796
Operating result−306−4 402
Result before tax2 498−4 823
Net result2 356−4 823
Total assets11 0397 929
Equity10 1275 305
202020212022202320242025
Revenue1 796
Operating result−306−4 402
Result before tax2 498−4 823
Net result2 356−4 823
Total assets11 0397 929
Equity10 1275 305
Regnskapsregisteret · company_revenue · FY2025 (company)
register ledger · money
2026-07-09regaccounts_filed: sisteInnsendteAarsregnskap2024 -> 2025
20242025
ENNA AS
TIGHT HOLDING AS 2525
HAVIS AS 2525
PES: AS 2525
RADIX AS 2525
202020212022202320242025
ENNA AS 50
TIGHT HOLDING AS 5025252525
HAVIS AS 25252525
PES: AS 25252525
RADIX AS 25252525
Aksjonærregisteret · company_ownership · 2025 · both directions
register ledger · owners
2022-12-31own+PES: AS acquired 25.0 pct
2022-12-31own+HAVIS AS acquired 25.0 pct
2022-12-31own+RADIX AS acquired 25.0 pct
2022-12-31own−ENNA AS exited (held 50.0 pct)
stewards
202420252026
auditor GYLLSTRØM & JOHANSEN AS 2026-06-23
accountant ECIT CONSULTA AS 2026-06-23
2020202120222023202420252026
auditor GYLLSTRØM & JOHANSEN AS 2026-06-23
accountant ECIT CONSULTA AS 2026-06-23
Brreg · company_org_roles
tenders
No recorded tender wins.
Relevant open tenders — matched · NACE 71.129 ↔ CPV
subscribers sharpen matches with per-company keywords
open-tender matching (NACE ↔ CPV) awaits Intelligo's open-tenders view
Doffin/TED · company_tender_wins · 2026-08-19
hiring
No job ads on record in the last 12 months.
NAV Arbeidsplassen · company_job_ad_months
group · owns
Group revenue kr 47.4MGroup net kr -2.32MTenders won 0Rolled up across the parent + 6 subsidiaries — Oceans5 AS alone is kr 32.9M.
rollup estimate · filed konsernregnskap not yet in Intelligo
Havkonsult AS 100%Other technical consultancy
Oceans5 AS 100%Other technical consultancykr 32.9M
O5 Invest AS 100%
51%
O5 Operations AS 51%Other technical consultancykr 11.7M
Oceans5 Group AS 51%Other technical consultancykr 2.85M
Fishency Innovation AS 0.4%
Aksjonærregisteret · company_ownership · 2025 · both directions
report
This company's annual report has not been read yet. The filed figures above come from the accounts form; everything the board wrote around them is in the PDF, which is read on request.
Regnskapsregisteret (årsberetning) · company_annual_reports
register
registered 2021-12-16tdn@oceans5.no · +4799325210
Brreg · companies
register ledger · 5 events
2026-07-09regaccounts_filed: sisteInnsendteAarsregnskap2024 -> 2025
2022-12-31own+PES: AS acquired 25.0 pct
2022-12-31own+HAVIS AS acquired 25.0 pct
2022-12-31own+RADIX AS acquired 25.0 pct
2022-12-31own−ENNA AS exited (held 50.0 pct)
Skiwo · company_events