Alf Olav Herdlevær is a private shareholder with an estimated portfolio value of NOK 1.2m. Alf Olav Herdlevær holds stakes in 3 companies, and roles in several others.

Estimated portfolio value

NOK 1.2m

The sum of estimated values across all known holdings in Norwegian AS/ASA companies

Companies Alf Olav Herdlevær owns

Company	Stake	Value (est.)
MIKROKALK AS	100.0%	NOK 522,000
ALF HERDLEVÆR BYGGKONSULENT AS	100.0%	NOK 18,000
PETRONOR E&P ASA	0.0%	NOK 9,000

Roles

Daglig leder

2 selskaper

ALF HERDLEVÆR BYGGKONSULENT AS 998989205

MIKROKALK AS 980643220

Styrets leder

2 selskaper

ALF HERDLEVÆR BYGGKONSULENT AS 998989205

MIKROKALK AS 980643220

Styremedlem

1 selskap

BARRON HOLDING AS 924781696

Active roles recorded in the Register of Business Enterprises / the Central Coordinating Register

Source: Biztrac.no · Data from the Brønnøysund Register Centre and the Norwegian Tax Administration · Last updated 03.10.2026.