ANTIN // 2021 Universal Registration Document

INFORMATION ON THE SHARE CAPITAL AND MAJOR SHAREHOLDERS 8 Information on the share capital On 14 October 2021, (i) 209,102 shares were issued, for a total amount of €3,512,913.60, in the context of the offer of ordinary shares reserved to the employees within the framework of the employee savings plan ( plan d'épargne entreprise ) and (ii) 82,528 shares were issued, for a total amount of €1,386,470.40, in the context of the offer of ordinary shares reserved to employees of AISL 2 and other employees of Antin whose participation in the Employee Offering could be subject to specific eligibility conditions, corresponding to a total amount of 291,630 shares issued for a global total amount of €4,285,529.97 (nominal amount of €2,916.30 shares and premium of €4,285,529.97). In accordance with Articles L. 3332-18 and seq. of the French Labor Code:

Information about the amount of any convertible securities, exchangeable securities or securities with warrants There are no securities or other rights representing liabilities of the Company, convertible bonds, exchangeable bonds and/ or bonds redeemable in shares that give or could give access to the capital except for a free share plan (see Section 8.2.1 “ Instruments giving access to equity- Free share plan ” of this Universal Registration Document). There are no shares that do not represent capital, such as founders shares or voting rights certificates. Stock options As of the date of this Universal Registration Document, the Company has not granted any stock options. Securities not representing share capital As of the date of this Universal Registration Document, the Company has not issued any securities not representing the share capital. Information about the terms of any acquisition rights or obligations over authorised but unissued capital Not Applicable. Information about the share capital of any Group entity which is subject to an option or agreed to be subject to an option Not Applicable.

3 all employees of Antin's companies, members of an employee savings plan, were eligible to the employee share purchase plan, subject to a three months seniority condition; 3 the subscription price of the Company's share within the framework of the employee share purchase plan was equal to the IPO price, less a 30% discount; and 3 the shares subscribed by the participating employees are locked-up for five years, subject to authorised early exit events provided by French law and local regulations.

Free Shares 2021

14 September 2021

Grant date by the Board of Directors

23 September 2021 11 November 2021

5% of the share capital as of the pricing of the IPO after completion of the Contributions

Maximum number of shares authorized Maximum number of shares granted

7,033,396

414,233

Number of initial beneficiaries

9

1

Price per share

€24.0

€32.8

Vesting date of the shares Vesting condition of the shares Duration of lock-up period

23 September 2023 11 November 2023

See paragraph 8.2.1

3 years (1)

3 years (1)

Number of shares vested

0 0

0 0

Number of shares cancelled or lapsed as at December 31, 2021 Number of shares granted and still to be vested as at December 31, 2021

7,033,396

414,233

(1) Such lock-up period shall expire with respect to 25% of the free shares after one (1) year as from the acquisition date and an additional 25% after two (2) years from the acquisition date.

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