# Article 26 — Information to be provided to the competent authorities **Commission Delegated Regulation (EU) 2025/1156 · binding · OJ L, 2025/1156, 3.11.2025 · dated 12 Jun 2025 [in force]** *In force · Commission Delegated Regulation (EU) 2025/1156, OJ L, 2025/1156, 3.11.2025 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/eli/reg_del/2025/1156/oj/eng)* 1. Market data providers shall provide the competent authorities, upon request, with the information on the total costs, and reasonable margins, as referred to in Chapter II, by means of the template set out in Annex II. 1. The information to be provided to the competent authorities shall specify: **(a)** details for the purpose of identification of the market data provider and, where applicable, the group to which that market data provider belongs; **(b)** details on the type of market data offered; **(c)** details on the total costs, including the following elements: **(i)** a description of the key infrastructures used by the market data provider; **(ii)** the components of that infrastructure which are relevant to determine the total costs; **(iii)** a specification of cost figures attributable to market data production and dissemination; **(d)** the reasonable margin applied; **(e)** explanations on how the level of fees is determined; **(f)** where differentials in fees are applied, an explanation on how costs and margins are allocated among the distinct categories of market data clients, if applicable; **(g)** any other information or supporting documents or both, which may be deemed relevant for the competent authority when considering the total costs and reasonable margins. **CHAPTER VIII — FINAL PROVISIONS**