John Kristian Jahnsen • 1964 • Fredrikstad • 7 roles • 1 shareholding

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Roles

Management

Name	Role	Total operating income	Total equity	Shares
M MAINFRAME DATA AS	Managing Director/CEO	739,083	295,796	100 % directly

Boards

Name	Role	Total operating income	Total equity	Shares
M MAINFRAME DATA AS	Chairman	739,083	295,796	100 % directly
V VETDESK AS Closed	Board Member	-	-107,700	-
N NROF AVD. SØNDRE ØSTFOLD	Chairman	-	-	-
C CONNECTOR AS Closed	Chairman	56,739	101,364	-
F FREDRIKSTAD PISTOLKLUBB	Board Member	-	-	-
R REGIMENTSMYRA SKYTEPARK	Board Member	-	-	-

Last update: Jan 7, 2026

Related industries3

Direct relationships5

RB
Rino Bjørn Wold Otkjær1963
FREDRIKSTAD PISTOLKLUBB, NROF AVD. SØNDRE ØSTFOLD
SO
Skjalg Oddbjørn Sannes1966
REGIMENTSMYRA SKYTEPARK
HA
Halfdan Amundsen Solberg1974
FREDRIKSTAD PISTOLKLUBB
NK
Nils Kaulum1978
REGIMENTSMYRA SKYTEPARK
CG
Carsten Glindø1962
VETDESK AS

Shares owned by John Kristian Wold Jahnsen

Name	Share class	Total operating income	Total equity	Share
M MAINFRAME DATA AS	Ordinære aksjer	739,083	295,796	100 % directly

Limited to direct ownership positions of 0.5% or more.

Last update: Jun 2, 2025