Private · Person · registered roles
Marius Christoffer Hornslien
Active in 5 companiesChair · Board memberOslo & Bærum
↳ Brreg · company_people
Role timeline
HORNSLIEN HORIZONS HOLDING AS
Styrets leder
KEYSTONE EDUCATION GROUP AS
Varamedlem
TALENTECH TOPCO AS
Styremedlem
HR NORDIC INVEST AS
Styremedlem
HR NORDIC TOPCO AS
Styremedlem
since 2021 · bars start at the registry's change date — full periods are not published
Across their companies5 · rolled up
Combined revenue
— +
Tenders won
0
Status
all active
Reach
2 industries
HHHORNSLIEN HORIZONS HOLDING AS ↗Styrets lederno accounts filedHNHR NORDIC INVEST AS ↗Styremedlem · Computing infrastructure, data processing, hosting and related activitiesno accounts filedHNHR NORDIC TOPCO AS ↗Styremedlem · Computing infrastructure, data processing, hosting and related activitiesno accounts filedKEKEYSTONE EDUCATION GROUP AS ↗Varamedlem · Web search portal activitiesno accounts filedTTTALENTECH TOPCO AS ↗Styremedlemno accounts filed
Brreg roles + Regnskap · rolled up across their companies — includes historical roles
Reach by industry
Computing infrastructure, data processing, hosting and related activities
2
Web search portal activities
1
Recent role changes
2026-05-07Became Styremedlem — HR NORDIC TOPCO AS
2026-04-28Became Styremedlem — HR NORDIC INVEST AS
2026-03-03Became Styremedlem — TALENTECH TOPCO AS
2025-06-21Became Varamedlem — KEYSTONE EDUCATION GROUP AS
2021-07-01Became Styrets leder — HORNSLIEN HORIZONS HOLDING AS
Signals
Multiple boardscurrent board roles at 2+ companies
computed from Brreg roles