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Denmark
Mattias Siø Fjellvang

MS

Mattias Siø Fjellvang

Founder, Fjellvang Holding ApS

Johan Kellers Vej 53, 1. thDK2 active roles

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Denmark · Data sourcesRisika·CVR·Virk

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Denmark
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Finland

Data sources

CVR / Virk
Brønnøysundsregistrene
Bolagsverket / SCB
PRH / YTJ

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© 2026 Risika A/S · Riskpilot is operated by Risika A/S, CVR 37677892EN|DAData updated daily from official Nordic registers

Mattias Siø Fjellvang is a Danish director with 2 active roles across Danish companies, including Founder at Fjellvang Holding ApS.

Overview

Active roles

2

directorships & management

Past roles

4

historical positions

Dissolved companies

3

in directorship history

Career timeline

2017 – 2018
Board of Directors, uniqkey A/S
2015 – 2021
Founder, Resecond ApS
2015 – 2019
Founder, ATHLIIT ApS
2014 – now
Founder, Fjellvang Holding ApS
2013 – 2015
Management, EDUKARMA ApS
2012 – now
Stakeholder, Constant Solutions

Personal details

Nationality

DK

Address

Johan Kellers Vej 53, 1. th

More on Mattias Siø Fjellvang

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