Euronext // 2021 Universal Registration Document

Presentation of the Group 1 Description of the Business

LCH SA The partnership between Euronext and LCH SA relies on three pillars: i) Euronext owns 11.1% of LCH SA, and has the right to appoint one Director to the LCH SA board, ii) Euronext and LCH SA have signed a ten-year agreement for the clearing of derivatives (the Derivatives Clearing Agreement) and iii) Euronext and LCH SA have a clearing agreement for the cash markets (the Cash Clearing Agreement). LCH SA is an EU27 based multi-asset class CCP covering Listed and OTC derivatives, Commodities, CDS, Cash equities and ETFs as well as the Repo Fixed income market. Thanks to its position across these market segments, LCH SA has a large pool of collateral posted by clearing members enabling it to be extremely resilient in stressed market conditions requiring short-term liquidity, as defined by ESMA through the CCP stress tests framework. Under the Derivatives Clearing Agreement, renewed in 2017, Euronext benefits from a revenue-sharing agreement with LCH SA, at approximately the same level of profitability as the previous agreement. Euronext therefore receives clearing fee revenues based on the number of financial and commodities derivatives trades cleared through LCH SA The Derivatives Clearing Agreement features solid governance rights as well as pre-emption rights for Euronext in the case of a sale of LCH SA In 2016, Euronext acquired 20% of EuroCCP with the aim of offering customers more choice for the clearing of their trades executed on Euronext cash markets, in line with the EU policy to favour competition in clearing services (in particular through Open Access provisions prescribed by MiFIR). In December 2019, Euronext entered into a binding agreement to sell its 20% minority stake in EuroCCP to Cboe Global Markets, alongside the other current EuroCCP shareholders. Following regulatory clearances and the arrangement of a supporting liquidity facility at the clearing entity level, the transaction was completed on 1 July 2020 and as of this date, Euronext is no longer a shareholder of EuroCCP, although it continues to use EuroCCP’s clearing services for a number of Euronext markets and segments. 1.3.7.2 Custody & Settlement Since 2019 Euronext has significantly grown its custody and settlement business through the successive acquisitions of Euronext Securities Oslo in Norway in 2019, Euronext Securities Copenhagen in Denmark in 2020 and Euronext Securities Milan in Italy in 2021. In November 2021 Euronext launched a new brand for its four central securities depositories (“CSDs”) – Euronext Securities. Euronext Securities is the CSD network connecting European economies to global capital markets. It represents more than €6.5 trillion of assets under custody (1) and processed more than 130 million settlement instructions in 2021. As part of the “Growth for Impact 2024” strategy, Euronext plans to “scale up and pan-Europeanise Euronext Securities”, with the following priorities: n Expand services : further develop local and Nordic added value services for financial institutions and issuers;

n Converge : mutualise and harmonise infrastructure to facilitate access to local markets served by Euronext Securities; n Scale European activities : support Euronext’s primary and secondary markets across Europe and leverage Euronext Securities digital securities issuance capabilities; n Improve local & international customers experience : roll out targeted new client interfaces and client service model. Euronext Securities Porto Euronext Securities Porto is a wholly-owned subsidiary of Euronext, established in Portugal. It provides issuance, custody and settlement services for c. €0.4 trillion of securities. Euronext Securities Porto is authorised as a CSD under Regulation (EU) n°909/2014 (“CSDR”) and is the operator of a designated securities settlement system under Directive 98/26/EC. Euronext Securities Oslo Euronext Securities Oslo is a wholly-owned subsidiary of Euronext, established in Norway. It provides issuance, custody and settlement services for c. €0.7 trillion of securities. Euronext Securities Oslo received its authorisation as a CSD under Regulation (EU) n°909/2014 (“CSDR”), effective as of 1 March 2022. Euronext Securities Copenhagen Euronext Securities Copenhagen is a wholly-owned subsidiary of Euronext, established in Denmark. It provides issuance, custody and settlement services for c. €1.5 trillion of securities. Euronext Securities Copenhagen is authorised as a CSD under Regulation (EU) n°909/2014 (“CSDR”) and is the operator of a designated securities settlement system under Directive 98/26/EC. Euronext Securities Milan Euronext Securities Milan is a wholly-owned subsidiary of Euronext, established in Italy. It provides issuance, custody and settlement services for c. €3.7 trillion of securities. Euronext Securities Milan is authorised as a CSD under Regulation (EU) n°909/2014 (“CSDR”) and is the operator of a designated securities settlement system under Directive 98/26/EC. Euronext Technology Solutions & Other comprises Euronext’s commercial Technology Solutions and services business, and former Borsa Italiana businesses including Gatelab and Integrated Technology Solutions “X2M”. Euronext offers custom solutions and cost-effective services to exchanges, venue operators, and financial institutions, who require complex, functional capabilities, and low latency processing across multiple-asset classes surrounded by exchange-grade business services used to operating within highly regulated environments. Euronext Technology Solutions also provides commercial services based on its Regulatory Reporting Services, registered as both an Approved Publication Arrangement (“APA”) and an Approved Reporting Mechanism (“ARM”) within the 1.3.8 EURONEXT TECHNOLOGY SOLUTIONS & OTHER

(1) At 31 December 2021.

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2021 UNIVERSAL REGISTRATION DOCUMENT