Stein Ole Onsøyen • 1969 • Fornebu • 4 roles • 7 shareholdings

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Roles

Boards

Name	Role	Total operating income	Total equity	Shares
S SOO INVEST AS	Chairman	-	44,672,207	100 % directly
R ROTOR OFFSHORE AS	Board Member	68,517,085	11,394,590	18.8 % indirectly
R ROTOR SYSTEMS AS	Board Member	40,130,252	-	10.7 % indirectly
R ROTOR NEWCO HOLDING AS	Board Member	-	-	-

Last update: Aug 28, 2026

Related industries

1

Services
Counseling

Direct relationships

5

EH
Eskil Hansen1970
ROTOR SYSTEMS AS, ROTOR OFFSHORE AS, ROTOR NEWCO HOLDING AS
TF
Tom Fedog1962
ROTOR SYSTEMS AS, ROTOR NEWCO HOLDING AS
EH
Erik Heimar Zachariasen1961
ROTOR SYSTEMS AS, ROTOR NEWCO HOLDING AS
CG
Christina Grindheim Onsøyen1969
SOO INVEST AS
SA
Sven August Smedshaug1970
ROTOR OFFSHORE AS

Shares owned by Stein Ole Onsøyen

Name	Share class	Total operating income	Total equity	Share
S SOO INVEST AS	Ordinære aksjer	0	44,672,207	100 % directly
R ROTOR OFFSHORE AS		68,517,085	11,394,590	18.8 % indirectly
R ROTOR SYSTEMS AS		40,130,252	0	10.7 % indirectly
A AKER SOLUTIONS ASA	NO0010716582	53,000,000	7,346,000,000	< 0.01 % directly
A AKER CARBON CAPTURE ASA Closed	NO0010890304	6,000,000	4,841,000,000	< 0.01 % directly
A AKER HORIZONS ASA Closed	NO0010921232	0	4,048,000,000	< 0.01 % directly
A AKASTOR ASA	NO0010215684	5,000,000	4,793,000,000	< 0.01 % directly

Limited to direct ownership positions of 0.5% or more.

Last update: Jun 2, 2025