Arribatec Group ASA: Mandatory notification of trade and disclosure of large shareholding

Håkon Reistad Fure, Chair of the Board of Directors of Arribatec Group ASA (the "Company"), has today, through his wholly owned company Company One AS, acquired 280,650 shares in the Company at an average price of NOK 5.7089 per share, a total consideration of NOK 1,602,202.79. The transaction was carried out on Oslo Børs (XOSL) on 27 August 2026.

Prior to the transaction, Company One AS held 6,719,350 shares in the Company, representing approximately 9.74% of the outstanding shares. Following the transaction, Company One AS holds 7,000,000 shares, representing approximately 10.15% of the Company's 68,978,676 outstanding shares and voting rights. Through this acquisition, Company One AS has crossed the 10% threshold of the Company's share capital and voting rights.

The notification of trade (Finanstilsynet form KRT-1500) is attached to this announcement.

This disclosure is made pursuant to Article 19 of Regulation (EU) No. 596/2014 (Market Abuse Regulation) and Chapter 4 of the Norwegian Securities Trading Act relating to disclosure of major shareholdings.

For further information, please contact:

Ole Jakob Kjølvik, CEO, Arribatec Group ASA, Tel: +47 915 98 935, Email: olejakob.kjolvik@arribatec.com Bent Hammer, CFO, Arribatec Group ASA, Tel: +47 982 15 497, Email: bent.hammer@arribatec.com

About Arribatec | www.arribatec.com Arribatec is a software and consulting company headquartered in Oslo. Combining a customer-centric engagement model with deep system, integration and domain expertise, Arribatec builds long-term strategic partnerships across a broad customer base. The company employs over 250 people and is listed on the Oslo Stock Exchange under the ticker ARR.