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No. 881/2026

21 July 2026

RULES

on the disclosure obligations of issuers of securities.

Article 1. Scope.

These rules apply to the further implementation of the Act on the disclosure obligations of issuers of securities and flagging obligations, No. 20/2021, with regard to:

• Calculation of voting rights in a trading book pursuant to Articles 24 and 25 of the Act.

• Common electronic reporting format pursuant to Article 6 of the Act.

• Calculation of voting rights pursuant to Articles 12 and 14 of the Act.

• Access to information pursuant to Articles 35 and 36 of the Act.

Article 2. References.

5% threshold: References in these rules to thresholds in the fifth and sixth paragraphs of Article 9 of Directive 2004/109/EC shall be understood as references to thresholds in Articles 24 and 25 of Act No. 20/2021.

Voting rights pursuant to point (a) of the first paragraph of Article 13 of Directive 2004/109/EC: References in these rules to voting rights pursuant to point (a) of the first paragraph of Article 13 of Directive 2004/109/EC shall be understood as references to voting rights pursuant to point (a) of the first paragraph of Article 14 of Act No. 20/2021, cf. points (a) and (d)–(h) of item 2 of the first paragraph of Article 4 of Act No. 115/2021 on markets for financial instruments.

Voting rights pursuant to point (b) of the first paragraph of Article 13 of Directive 2004/109/EC: References in these rules to voting rights pursuant to point (b) of the first paragraph of Article 13 of Directive 2004/109/EC shall be understood as references to voting rights pursuant to point (b) of the first paragraph of Article 14 of Act No. 20/2021, cf. points (a) and (d)–(h) of item 2 of the first paragraph of Article 4 of Act No. 115/2021.

Annual financial statements and audit reports: References in these rules to information pursuant to Article 4 of Directive 2004/109/EC shall be understood as references to information pursuant to Articles 6 and 10 of Act No. 20/2021.

Changes in rights attached to classes of shares or securities: References in these rules to information pursuant to Article 16 of Directive 2004/109/EC shall be understood as references to information pursuant to Article 31 of Act No. 20/2021.

Storage in a central storage system and access: References in these rules to storage in a central storage system and access pursuant to the first paragraph of Article 21 of Directive 2004/109/EC shall be understood as references to central storage and access pursuant to Articles 35 and 36 of Act No. 20/2021.

Payments to public authorities: References in these rules to information pursuant to Article 6 of Directive 2004/109/EC shall be understood as references to information pursuant to Article 9 of Act No. 20/2021.

Half-yearly financial statements and audit reports or limited reviews: References in these rules to all information pursuant to Article 5 of Directive 2004/109/EC shall be understood as references to information pursuant to Articles 7 and 10 of Act No. 20/2021.

Home Member State of the issuer: References in these rules to the home Member State of the issuer in point (i) of the first paragraph of Article 2 of Directive 2004/109/EC shall be understood as references to the home state pursuant to Article 5 of Act No. 20/2021.

Total voting rights and share capital: References in these rules to Article 15 of Directive 2004/109/EC shall be understood as references to Article 19 of Act No. 20/2021.

Inside information: References in these rules to inside information pursuant to Article 6 of Directive 2003/6/EC shall be understood as references to inside information pursuant to Article 17 of Regulation (EU) No. 596/2014 of the European Parliament and of the Council on market abuse, cf. Act No. 60/2021 on measures against market abuse.

Purchase or sale of the issuer's own shares: References in these rules to information pursuant to Article 14 of Directive 2004/109/EC shall be understood as references to information pursuant to Article 29 of Act No. 20/2021.

Electronic reporting format: References in these rules to the electronic reporting format pursuant to the seventh paragraph of Article 4 of Directive 2004/109/EC shall be understood as references to the electronic reporting format pursuant to Article 6 of Act No. 20/2021.

Aggregation of holdings: References in these rules to Articles 9, 10 and 13 of Directive 2004/109/EC shall be understood as references to Articles 12, 13, 14, 23, 24, 25 and 26 of Act No. 20/2021.

Aggregation of holdings in a group: References in these rules to point (e) of Article 10 of Directive 2004/109/EC shall be understood as references to point (e) of the first paragraph of Article 13 of Act No. 20/2021.

Notifications concerning voting rights: References in these rules to information pursuant to Article 12 of Directive 2004/109/EC shall be understood as references to information pursuant to Articles 16, 20, 21, 22, 27 and 28 of Act No. 20/2021.

Exemption for trading on behalf of clients: References in these rules to the sixth paragraph of Article 9 of Directive 2004/109/EC shall be understood as references to Article 24 of Act No. 20/2021.

Flagging thresholds: References in these rules to the first paragraph of Article 9 of Directive 2004/109/EC shall be understood as references to the first and third paragraphs of Article 12 of Act No. 20/2021.

Article 3. Common electronic reporting format.

Annual financial statements shall be published in a common electronic reporting format in accordance with the provisions of this Article and Articles 4-6. Issuers shall prepare their annual financial statements in XHTML format.

Core taxonomy means a combined set of taxonomy elements set out in Annex VI to Regulation (EU) 2019/815 and the following linkbases:

• Presentation linkbase that describes the hierarchy of taxonomy elements.

• Calculation linkbase that describes the mathematical relationship between taxonomy elements.

• Label linkbase that describes the meaning of all taxonomy elements.

• Definition linkbase that reflects the dimensional relationship between taxonomy elements.

Extension taxonomy means a combined set of taxonomy elements and the following linkbases, both of which are created by the issuer:

• Presentation linkbase that describes the hierarchy of taxonomy elements.

• Calculation linkbase that describes the mathematical relationship between taxonomy elements.

• Label linkbase that describes the meaning of all taxonomy elements.

• Definition linkbase that ensures the results of dimensional validation performed on the XBRL file and defined in the extension taxonomy.

IFRS consolidated financial statements (e. IFRS consolidated financial statements) means consolidated financial statements prepared in accordance with either IFRS according to Regulation (EU) 1606/2002 or IFRS referred to in point (a) of the first subparagraph of Decision 2008/961/EC.

Article 4. Inline IFRS consolidated financial statements.

Where annual financial statements include IFRS consolidated financial statements, the consolidated financial statements shall be marked up (e. mark up) by the issuer.

The issuer shall, at a minimum, mark up (e. mark up) the disclosures (e. disclosures) specified in Annex II to Regulation (EU) 2019/815, where these disclosures are part of the IFRS consolidated financial statements.

The issuer may mark up (e. mark up) disclosures (e. disclosures) that are part of IFRS consolidated financial statements other than those specified in paragraph 2.

For the mark up (e. mark up) in paragraphs 1 to 3 of the provision, the issuer shall use XBRL mark up language (e. mark up language) and use a taxonomy (e. taxonomy) where the same elements as in the core taxonomy shall be used. Where, in accordance with point 4 of Annex IV to Regulation (EU) 2019/815, it is not appropriate to use elements from the core taxonomy, the issuer shall prepare an extended taxonomy of elements in accordance with Annex IV to Regulation (EU) 2019/815.

Article 5. Inline financial statements other than IFRS consolidated financial statements.

Issuers within the member states of the European Economic Area are authorised to mark up (e. mark up) parts of annual financial statements other than those specified in Article 4 if XBRL mark up language (e. mark up language) is used and a taxonomy (e. taxonomy) intended for the specified parts of the annual financial statement is used and the taxonomy is approved by the member state in which the issuer is registered.

Article 6. Common rules on inline.

For mark ups (e. mark ups) in accordance with Articles 4 and 5, the issuer shall comply with the following:

• The embedding of markups (e. embedding of markups) in the issuer's annual financial statement in XHTML format shall be based on the Inline XBRL specification set out in Annex III to Regulation (EU) 2019/815.

• The conditions regarding marking up (e. marking up) and file rules set out in Annex IV to Regulation (EU) 2019/815.

Article 7. Implementation of regulations.

With these rules, the following Commission Regulations (EU) shall also enter into force in this country, as published in the EEA Supplement to the Official Journal of the European Union No. 7 of 28 January 2021, pp. 439-442 and 443-449, which were incorporated into the EEA Agreement by Decision of the Joint EEA Committee No. 82/2020 of 12 June 2020, which is published in the EEA Supplement to the Official Journal of the European Union No. 22 of 16 March 2023, pp. 26-27, cf. also Protocol 1 on horizontal adaptation to the Agreement on the European Economic Area, cf. Act No. 2/1993 on the European Economic Area, in which the Protocol is enacted:

• Commission Delegated Regulation (EU) 2015/761 of 17 December 2014 supplementing Directive 2004/109/EC of the European Parliament and of the Council with regard to certain regulatory technical standards on major holdings.

• Commission Delegated Regulation (EU) 2016/1437 of 19 May 2016 supplementing Directive 2004/109/EC of the European Parliament and of the Council with regard to regulatory technical standards on access to information provided for by Union rules.

With these rules, the annexes to the following Commission Regulation (EU) shall also enter into force in this country, as published in the Official Journal of the European Union, and incorporated into the EEA Agreement by Decision of the Joint EEA Committee No. 82/2020 of 12 June 2020, which is published in the EEA Supplement to the Official Journal of the European Union No. 22 of 16 March 2023, pp. 26-27, cf. also Protocol 1 on horizontal adaptation to the Agreement on the European Economic Area, cf. Act No. 2/1993 on the European Economic Area, in which the Protocol is enacted and the transitional provision in Act No. 20/2021:

• Commission Delegated Regulation (EU) 2019/815 of 17 December 2018 supplementing Directive 2004/109/EC of the European Parliament and of the Council with regard to regulatory technical standards on the specification of a single electronic reporting format (published in the Official Journal of the EU L 143, 29 May 2019, p. 1), cf. corrections in the Official Journal of the EU L 145, 4 June 2019, p. 85, as amended by: Commission Delegated Regulation (EU) 2019/2100 of 30 September 2019 (published in the Official Journal of the EU L 326, 16 December 2019, p. 1).

With these rules, the annexes to the following Commission Regulations (EU) shall also enter into force in this country, cf. the authorisation to refer to their English version in the Official Journal of the European Union in the transitional provision in Act No. 20/2021:

Commission Delegated Regulation (EU) 2020/1989 of 6 November 2020 amending Delegated Regulation (EU) 2019/815 as regards the 2020 update of the taxonomy set out in the regulatory technical standards for the single electronic reporting format (published in the Official Journal of the EU L 429, 18 December 2020, p. 1) which was incorporated into the EEA Agreement by Decision of the Joint EEA Committee No. 185/2022 of 10 June 2022, published in the EEA Supplement to the Official Journal of the European Union No. 66 of 13 October 2022, p. 33, cf. also Protocol 1 on horizontal adaptation to the Agreement on the European Economic Area, cf. Act No. 2/1993 on the European Economic Area, in which the Protocol is incorporated into law, and the transitional provision in Act No. 20/2021.

Commission Delegated Regulation (EU) 2022/352 of 29 November 2021 amending Delegated Regulation (EU) 2019/815 as regards the 2021 update of the taxonomy laid down in the technical regulatory standards for the single electronic reporting format (published in the Official Journal of the EU L 77, 7 March 2022, p. 1), which was incorporated into the EEA Agreement by Decision of the EEA Joint Committee No. 186/2022 of 10 June 2022, published in the EEA Supplement to the Official Journal of the European Union No. 66 of 13 October 2022, p. 34, cf. also Protocol 1 on horizontal adaptation to the Agreement on the European Economic Area, cf. Act No. 2/1993 on the European Economic Area, in which the Protocol is incorporated into law, and the transitional provision in Act No. 20/2021.

Commission Delegated Regulation (EU) 2022/2553 of 21 September 2022 amending Delegated Regulation (EU) 2019/815 as regards the 2022 update of the taxonomy laid down in the technical regulatory standards for the single electronic reporting format (published in the Official Journal of the EU L 339 of 30 December 2022, p. 1), which was incorporated into the EEA Agreement by Decision of the EEA Joint Committee No. 56/2023 of 17 March 2023, published in the EEA Supplement to the Official Journal of the European Union No. 55, 26 October 2023, p. 50, cf. also Protocol 1 on horizontal adaptation to the Agreement on the European Economic Area, cf. Act No. 2/1993 on the European Economic Area, in which the Protocol is incorporated into law, and the transitional provision in Act No. 20/2021.

Commission Delegated Regulation (EU) 2025/19 of 26 September 2024 amending the technical regulatory standards laid down in Delegated Regulation (EU) 2019/815 as regards the 2024 update of the taxonomy for the single electronic reporting format (published in the Official Journal of the EU L, 2025/19, 15 January 2025), which was incorporated into the EEA Agreement by Decision of the EEA Joint Committee No. 211/2025 of 19 September 2025, published in the EEA Supplement to the Official Journal of the European Union No. 3 of 15 January 2026, p. 45, cf. also Protocol 1 on horizontal adaptation to the Agreement on the European Economic Area, cf. Act No. 2/1993 on the European Economic Area, in which the Protocol is incorporated into law, and the transitional provision in Act No. 20/2021.

Article 8. Entry into force.

These rules are laid down pursuant to the authorisation in the first to fourth items of the second paragraph of Article 55, cf. the transitional provision, of Act No. 20/2021. The rules enter into force immediately. At the same time, the rules on the disclosure obligations of securities issuers, No. 655/2023, shall cease to be in force.

Central Bank of Iceland, 21 July 2026.
Björk Sigurgísladóttir
Deputy Governor for Financial Supervision.
Linda Kolbrún Björgvinsdóttir
Director.

Part B — Publication date: 7 August 2026