Technical Correction MAR 2026: what financial entities must review

Key data

Financial entities and issuers of listed securities in the EU must review their regulatory compliance procedures following the publication, on 13 March 2026, of the correction of errors in EU Regulation 2016/522, which is part of the regulatory framework on market abuse (MAR). The official reference is CELEX:32016R0522R(03).

Although the corrections are technical in nature and do not alter the substance of the regulation, ignoring a published errata in the Official Journal may generate inconsistencies in internal compliance procedures, especially with regard to notification thresholds, formats and procedures established by Regulation 2016/522.

What does this regulation establish?

EU Regulation 2016/522 is a delegated regulation that complements the market abuse regulation (MAR). Its content regulates specific technical aspects, including:

• Notification thresholds: amounts and conditions that determine when an operation must be reported to the competent authorities.
• Notification formats: structure and fields required in mandatory communications.
• Procedures: steps and deadlines that entities must follow to comply with MAR transparency obligations.

The correction published on 13 March 2026 (CELEX:32016R0522R(03)) is an errata that corrects inaccuracies in the original text. It does not modify the regulatory substance, but updates the official text that regulatory compliance departments must use as a reference.

This type of correction is common in the European regulatory framework and its operational impact depends on whether the corrected inaccuracies affect the specific procedures that each entity has documented.

Economic and operational impact

The direct impact of this correction is operational, not economic. It does not introduce new obligations, does not modify amounts and does not create new penalties. However, it has practical consequences that should not be ignored:

• Review of internal documentation: compliance manuals, notification policies and reporting templates that cite or reproduce the text of Regulation 2016/522 must be updated to reflect the corrected text.
• Consistency with official text: in the event of inspection or regulatory request, entities must be able to demonstrate that their procedures are based on the current and correct version of the regulation.
• Limited impact for non-financial companies: unless the company is an issuer of listed securities, the practical impact is minimal.

For issuers of listed securities, attention should focus on transaction notification requirements, which is the area where Regulation 2016/522 has the greatest practical application on a daily basis.

Who does it affect?

According to the text of the regulation, those affected are:

• Financial entities operating in EU markets and subject to the MAR framework.
• Issuers of listed securities on regulated markets in the EU, which have transaction notification obligations under MAR.
• Financial market operators (trading platforms, systematic internalizers, etc.).
• Non-financial companies with listed securities, with regard to their transaction notification obligations for persons with management responsibilities (PDMR).

For other companies — SMEs, self-employed persons, unlisted companies — this correction has no practical impact.

Practical example

A compliance department of a financial entity has documented in its internal manual the procedure for reporting suspicious transactions, with express reference to the text of Regulation 2016/522. Following the publication of the correction of errors (CELEX:32016R0522R(03) on 13 March 2026), the compliance officer must:

1. Access the corrected text on EUR-Lex and identify which passages have been modified by the errata.
2. Compare those passages with those in the internal manual and notification templates.
3. Update the affected documents and record the change in the compliance manual version register.

Similarly, an issuer of listed securities that has implemented a procedure for reporting transactions by its executives (PDMR) must verify that the thresholds, formats and procedures documented match the corrected text of Regulation 2016/522.

What should companies do now?

1. Identify if you are an affected entity: if your company is a financial entity, issuer of listed securities or market operator, this correction directly affects you. If not, you can ignore it.
2. Access the corrected text: download the updated version of Regulation 2016/522 from EUR-Lex and identify the passages modified by the errata.
3. Review internal compliance documentation: compare the corrected passages with your manuals, policies and notification templates. Update any reference to the previous text.
4. Verify transaction notification procedures: especially with regard to notification thresholds, formats and procedures established by Regulation 2016/522.
5. Document the review: record in the version register of your compliance manual that this verification has been carried out and, where applicable, the changes introduced.
6. Confirm the entry into force date: since it is not specified in the available data, consult the official source to determine from when the corrected text applies.