# Article 4 — Transparency of fee structures **Commission Delegated Regulation (EU) 2017/573 · binding · OJ L 87, 31.3.2017 · dated 6 Jun 2016 [in force]** *In force · Commission Delegated Regulation (EU) 2017/573, OJ L 87, 31.3.2017 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/eli/reg_del/2017/573/oj/eng)* Trading venues shall publish the objective criteria for the establishment of their fees and fee structures and other conditions provided for in Article 3, together with execution fees, ancillary fees, rebates, incentives and disincentives in one comprehensive and publicly accessible document on their website.