Thorbjørn Grindhaug • 1953 • Fornebu • 11 roles • 19 shareholdings

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Roles

Management

Name	Role	Total operating income	Total equity	Shares
R REVISJONSFIRMAET FLATTUM & CO AS	Managing Director/CEO	37,353,513	17,636,844	12.5 % directly
S SYSTEMREVISJON AS	Managing Director/CEO	5,771,970	-	12.5 % indirectly

Boards

Name	Role	Total operating income	Total equity	Shares
T TOG INVEST AS	Chairman	-	16,357,697	100 % directly
R REVISJONSFIRMAET FLATTUM & CO AS	Board Member	37,353,513	17,636,844	12.5 % directly
S SYSTEMREVISJON AS	Board Member	5,771,970	-	12.5 % indirectly
A AKVATECH AS	Chairman	2,369,914	1,250,944	3.08 % indirectly
T THORBJØRN GRINDHAUG CONSULT	Holder	-	-	-
N NORSK ENØK OG ENERGI AS KONKURSBO Closed	Auditor	-	-	-
N NETS HOLDCO 5 AS	Board Member	15,098,000	26,920,004,000	-
A ASLAK BOLIGRUPPE SA	Chairman	-	-	-
K K. BUGGE AS Closed	Chairman	535,865	3,254,455	-

Last update: Dec 10, 2025

Related industries

5

Services
Counseling
Services
Organizations
Services
Accounting
Primary sector
Ocean Aquaculture
Services
Auditing

Direct relationships

5

ØB
Øyvind Baltzersen1955
SYSTEMREVISJON AS, REVISJONSFIRMAET FLATTUM & CO AS
ES
Eirik Skjølberg1988
SYSTEMREVISJON AS, REVISJONSFIRMAET FLATTUM & CO AS
ES
Erik Sandtrø1971
NORSK ENØK OG ENERGI AS KONKURSBO
GS
Geir Spiten1964
AKVATECH AS
GL
Geir Lislerud1968
AKVATECH AS

Shares owned by Thorbjørn Grindhaug

Name	Share class	Total operating income	Total equity	Share
T TOG INVEST AS	Ordinære aksjer	0	16,357,697	100 % directly
R REVISJONSFIRMAET FLATTUM & CO AS	Ordinære aksjer	37,353,513	17,636,844	12.5 % directly
S SYSTEMREVISJON AS		5,771,970	0	12.5 % indirectly
A AKVATECH AS		2,369,914	1,250,944	3.08 % indirectly
M MØLLADAMMEN NÆRINGSPARK INVEST AS		0	3,474,564	1.6 % indirectly
K KORALFISK AS	Ordinære aksjer	0	104,263,154	0.02 % directly < 0.01 %
O OKEA ASA	Ordinære aksjer	808,101,000	57,199,000	< 0.01 % directly
N Norsk Hydro ASA	Ordinære aksjer	154,000,000	54,480,000,000	< 0.01 % directly
P PUBLIC PROPERTY INVEST ASA Closed	Ordinære aksjer	13,568,481	5,336,319,412	< 0.01 % directly
V VEND MARKETPLACES ASA	Ordinære aksjer	91,000,000	30,050,000,000	< 0.01 % directly
G GRIEG SEAFOOD ASA	Ordinære aksjer	275,760,000	3,981,042,000	< 0.01 % directly
K KONGSBERG GRUPPEN ASA	Ordinære aksjer	2,968,000,000	7,846,000,000	< 0.01 % directly
T TELENOR ASA	Ordinære aksjer	77,292,000,000	75,629,000,000	< 0.01 % directly
P PROTECTOR FORSIKRING ASA	Ordinære aksjer	-	-	< 0.01 % directly
H HÖEGH AUTOLINERS ASA	Ordinære aksjer	0	1,237,937,000	< 0.01 % directly
A AKASTOR ASA	Ordinære aksjer	5,000,000	4,793,000,000	< 0.01 % directly
S SATS ASA	Ordinære aksjer	0	2,505,000,000	< 0.01 % directly
B BORREGAARD ASA	Ordinære aksjer	0	2,318,680,000	< 0.01 % directly
E ENTRA ASA	Ordinære aksjer	194,000,000	5,262,000,000	< 0.01 % directly

Limited to direct ownership positions of 0.5% or more.

Last update: Oct 30, 2026