Notice of the 2026 annual general meeting in Instalco AB (publ)

The annual general meeting of Instalco AB (publ), 559015-8944, ("Instalco" or the "company") will be held on Tuesday 5 May 2026 at 14:00 CEST at Venue 81, Drottninggatan 81 in Stockholm. Registration for the annual general meeting will commence at 13:30 CEST. The board has decided that shareholders may exercise their voting rights at the annual general meeting also by postal voting in advance, in accordance with the provisions of Instalco's articles of association.

The notice is attached to this press release, and is also available at the company's website, www.instalco.se/en/.

PARTICIPATIONShareholders who wish to participate in the annual general meeting must be recorded as a shareholder in the presentation of the share register prepared by Euroclear Sweden AB concerning the circumstances on Friday 24 April 2026, and give notice of participation no later than Tuesday 28 April 2026.

To be entitled to participate in the annual general meeting, shareholders whose shares are registered in the names of nominees must, in addition to giving notice of participation in accordance with the instructions below, register such shares in their own name so that the shareholder is recorded in the presentation of the share register as of the record date Friday 24 April 2026. Such registration may be temporary (so called voting rights registration) and can be requested from the nominee in accordance with the nominee's procedures in such time in advance as the nominee determines. Voting rights registrations effected by the nominee no later than Tuesday 28 April 2026 will be considered in the presentation of the share register.

Participation at the meeting venueShareholders who wish to attend the meeting venue in person or by proxy must give notice of participation no later than Tuesday 28 April 2026 on the company's website, www.instalco.se/en/, by telephone to +46 (0)771 24 64 00 (on weekdays between 09:00 and 16:00 CEST), by mail to Computershare AB, "Instalco's AGM", P.O. Box 149, SE-182 12 Danderyd, Sweden or by e-mail to [email protected]. The notification shall include name, personal identification number or company registration number, address, phone number, e-mail address and, if applicable, the number of assistants (not more than two).

If the shareholder is represented by a proxy, a written and dated power of attorney signed by the shareholder shall be issued to the proxy. A template proxy form is available on the company's website, www.instalco.se/en/. If the shareholder is a legal entity, a registration certificate or a corresponding authorisation document shall be enclosed. To facilitate registration at the annual general meeting, the power of attorney, registration certificate and other authorisation documents should be sent to the company at the above address well in advance of the annual general meeting.

Participation by postal votingShareholders who wish to participate in the annual general meeting by postal voting must give notice of participation by casting their postal vote so that it is received by Computershare AB no later than Tuesday 28 April 2026. A special form shall be used for postal voting. The postal voting form is available on the company's website, www.instalco.se/en/. A completed and signed postal voting form can be submitted either by mail to Computershare AB, "Instalco's AGM", P.O. Box 149, SE-182 12 Danderyd, Sweden or by e-mail to [email protected]. Shareholders may also cast their postal vote electronically through BankID verification via the company's website, www.instalco.se/en/.

If the shareholder postal votes by proxy, a written and dated power of attorney signed by the shareholder shall be enclosed with the form. A template proxy form is available on the company's website, www.instalco.se/en/. If the shareholder is a legal entity, a registration certificate or a corresponding authorisation document shall be enclosed with the form. Further instructions can be found on the postal voting form.

PROPOSED AGENDA1. Opening of the annual general meeting2. Election of chair of the annual general meeting3. Preparation and approval of the voting list4. Approval of the agenda5. Election of one or two persons to check and verify the minutes6. Determination of whether the annual general meeting has been duly convened7. Presentation by the CEO8. Presentation of the annual and sustainability report and the auditor's report, as well as the consolidated financial statements, the auditor's report on the consolidated financial statements, and the assurance report on the sustainability report9. Resolution on the adoption of the income statement and balance sheet as well as the consolidated income statement and consolidated balance sheet10. Resolution on disposition of the company's profits in accordance with the adopted balance sheet11. Resolution on discharge from liability for the directors of the board and the CEO12. Determination of the number of directors of the board13. Determination of the remuneration to the directors of the board14. Election of directors of the board and chair of the board

(a) Johnny Alvarsson(b) Carina Edblad(c) Per Leopoldsson(d) Carina Qvarng¥rd(e) Per Sj¶strand(f) Ulf Wretskog(g) Camilla -berg

(h) Johnny Alvarsson

15. Determination of the number of auditors and any deputy auditors16. Determination of the remuneration to the auditor17. Election of auditor and any deputy auditors18. Presentation of the remuneration report of the board for approval19. Resolution on guidelines for remuneration to the senior management20. Resolution on a long-term incentive programme of warrants21. Resolution on authorisation for the board to resolve to issue shares, convertible bonds and/or warrants22. Resolution on authorisation for the board to resolve on acquisitions and transfers of own shares23. Closing of the annual general meeting

For further information:Fredrik Trahn, Head of Communications & Sustainability, +46-70-913 67 96, [email protected] Mathilda Eriksson, Head of IR, +46-70-972 34 29, [email protected]

Instalco is one of the leading installation companies in Northern Europe for electrical, heating & plumbing, ventilation, industrial solutions and technical consulting. We offer system design, installation and service & maintenance of buildings and facilities in Sweden, Norway, Finland and Germany. The business is run through our 150+ subsidiaries, with support from a small, central organisation. Instalco is listed on Nasdaq Stockholm under the ticker INSTAL. For more information, visit www.instalco.se

AttachmentsInstalco AB Notice Of The 2026 Annual General Meeting