ANTIN // 2021 Universal Registration Document

INFORMATION ABOUT THE COMPANY 7 Organisational structure of Antin

7.2.2 Antin’s entities

3 Antin Infrastructure Partners IV Luxembourg FP GP is a private limited liability company (société à responsabilité limitée) , incorporated under the laws of the Grand Duchy of Luxembourg. Its registered office is located at 17 Boulevard F.W. Raiffeisen, L-2411 Luxembourg and it is registered under number B227043 with Luxembourg Trade and Companies Registrar. The Company indirectly holds 100% of the capital and voting rights of Antin Infrastructure Partners IV Luxembourg FP GP; 3 Antin Infrastructure Partners Mid Cap I Luxembourg FP GP is a private limited liability company (société à responsabilité limitée) , incorporated under the laws of the Grand Duchy of Luxembourg. Its registered office is located at 17 Boulevard F.W. Raiffeisen, L-2411 Luxembourg and it is registered under number B248070 with the Luxembourg Trade and Companies Registrar. The Company indirectly holds 100% of the capital and voting rights of Antin Infrastructure Partners Mid Cap I Luxembourg FP GP; 3 Antin Infrastructure Partners Mid Cap I Luxembourg GP is a private limited liability company (société à responsabilité limitée) , incorporated under the laws of the Grand Duchy of Luxembourg. Its registered office is located at 17 Boulevard F.W. Raiffeisen, L-2411 Luxembourg and it is registered under number B248069 with Luxembourg Trade and Companies Registrar. The Company indirectly holds 100% of the capital and voting rights of Antin Infrastructure Partners Mid Cap I Luxembourg GP; 3 Antin Infrastructure NextGen Fund I Luxembourg GP is a private limited liability company (société à responsabilité limitée) , incorporated under the laws of the Grand Duchy of Luxembourg. Its registered office is located at 17 Boulevard F.W. Raiffeisen, L-2411 Luxembourg and it is registered under number B256930 with Luxembourg Trade and Companies Registrar. The Company indirectly holds 100% of the capital and voting rights of Antin Infrastructure NextGen Fund I Luxembourg GP; 3 Antin Infrastructure NextGen Fund I Luxembourg FP GP is a private limited liability company (société à responsabilité limitée) , incorporated under the laws of the Grand Duchy of Luxembourg. Its registered office is located at 17 Boulevard F.W. Raiffeisen, L-2411 Luxembourg and it is registered under number B258446 with Luxembourg Trade and Companies Registrar. The Company indirectly holds 100% of the capital and voting rights of Antin Infrastructure Partners NextGen Fund I Luxembourg FP GP. Antin’s Consolidated Financial Statements (Section 6 “ Financial statements ” of the Universal Registration Document) comprise the abovementioned entities.

The principal direct or indirect subsidiaries of the Company are described below: 3 Antin Infrastructure Partners SAS is a simplified joint stock company (société par actions simplifiée) , incorporated under the laws of France. Its registered office is located at 374, rue Saint-Honoré, 75001 Paris, France and it is registered under number 789 002 300 RCS Paris. AIP SAS is authorised and regulated by the AMF under number GP-15000003. The Company directly holds 100% of the capital and voting rights of AIP SAS; 3 Antin Infrastructure Partners UK Limited is a private limited company, incorporated under the laws of England andWales. Its registered office is located at 14 St. George Street, London W1S 1FE, United Kingdom and it is registered under company number 8492573. AIP UK is authorised and regulated by the FCA under number FRN 649872. The Company directly holds 100% of the capital and voting rights of AIP UK; 3 Antin Infrastructure Partners US Services LLC is a limited liability company, incorporated under the laws of Delaware, United States. Its registered office is located at 1114 Avenue of the Americas 29 th Floor, New York 10036, United States and it is an investment adviser registered with the United States SEC. The Company indirectly holds 100% of the capital and voting rights of AIP US; 3 Antin Infrastructure Partners Asia Private Ltd is a private company limited by shares, incorporated under the laws of Singapore. Its registered office is located at Tower 3, 12 Marina Boulevard, Singapore 018982 and it is registered under number 2021205233Z with the Singapore registrar of companies and business names of the Accounting and Corporate Regulatory Authority. The Company directly holds 100% of the capital and voting rights of Antin Infrastructure Partners Asia Private Ltd; 3 Antin Infrastructure Partners II Luxembourg GP, S.à.r.l. is a private limited liability company (société à responsabilité limitée) , incorporated under the laws of the Grand Duchy of Luxembourg. Its registered office is located at 17 Boulevard F.W. Raiffeisen, L-2411 Luxembourg and it is registered under number B179122 with the Luxembourg Trade and Companies Registrar. The Company indirectly holds 100% of the capital and voting rights of Antin Infrastructure Partners II Luxembourg GP, S.à.r.l.; 3 Antin Infrastructure Partners III Luxembourg GP, S.à.r.l. is a private limited liability company (société à responsabilité limitée) , incorporated under the laws of the Grand Duchy of Luxembourg. Its registered office is located at 17 Boulevard F.W. Raiffeisen, L-2411 Luxembourg and it is registered under number B208832 with the Luxembourg Trade and Companies Registrar. The Company indirectly holds 100% of the capital and voting rights of Antin Infrastructure Partners III Luxembourg GP, S.à.r.l.; 3 Antin Infrastructure Partners IV Luxembourg GP is a private limited liability company (société à responsabilité limitée) , incorporated under the laws of the Grand Duchy of Luxembourg. Its registered office is located at 17 Boulevard F.W. Raiffeisen, L-2411 Luxembourg and it is registered under number B227018 with the Luxembourg Trade and Companies Registrar. The Company indirectly holds 100% of the capital and voting rights of Antin Infrastructure Partners IV Luxembourg GP;

188 ANTIN INFRASTRUCTURE PARTNERS S.A. - UNIVERSAL REGISTRATION DOCUMENT 2021