Regulatory release no. 9 - 2026: Major shareholder announcement

Major shareholder announcement With reference to company announcement no. 4-2026 dated 11 June 2026 related to the results of the initial public offering (the "Offering”) and admission to trading of all of the shares of InstallatørGruppen A/S ("InstallatørGruppen” or the "Company”, and together with its consolidated subsidiaries, the "Group”) to trading on Nasdaq Copenhagen A/S ("Nasdaq Copenhagen”), InstallatørGruppen hereby announces that it has received the following notification pursuant to