FORM 8.3 IRISH TAKEOVER PANEL DISCLOSURE UNDER RULE 8.3 OF THE IRISH TAKEOVER PANEL ACT, 1997, TAKEOVER RULES, 2007 (AS AMENDED) DEALINGS BY PERSONS WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE 1. KEY INFORMATION Name of person dealing (Note 1) Investec Asset Management Limited Company dealt in Aer Lingus Group PLC Class of relevant security to which the dealings being Ordinary Shares disclosed relate (Note 2) EUR0.05 Date of dealing 23 April 2015 2. INTERESTS AND SHORT POSITIONS (a) Interests and short positions (following dealing) in the class of relevant security dealt in(Note 3) Class of relevant security: Interests Short positions Number % Number % (1) Relevant security 9,888,902 1.85 (2) Derivatives (other than options): (3) Options and agreements to purchase/sell: TOTAL: 9,888,902 1.85 (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of relevant security: Interests Short positions Number % Number % (1) Relevant security (2) Derivatives (other than options): (3) Options and agreements to purchase/sell: TOTAL: 3. DEALINGS (Note 4) (a) Purchases and sales Purchase/sale Number of relevant Price per unit securities (Note 5) Sale 9,744 EUR 2.401 (b) Derivatives transactions (other than options transactions) Product description Nature of transaction Number of Price per e.g. CFD (Note 6) relevant unit (Note 5) securities (Note 7) (c) Options transactions in respect of existing relevant securities (i) Writing, selling, purchasing or varying Product name e.g. Writing, Number of Exercise Type Expiry Option call option selling, securities price e.g. date money purchasing, to which American, paid/ varying option European received etc. relates etc. per unit (ii) Exercising Product name Number of Exercise price per e.g. call option securities unit (Note 5) (d) Other dealings (including transactions in respect of new securities. (Note4) Nature of transaction Details Price per unit (Note 8) (if applicable) (Note 5) 4. OTHER INFORMATION Agreements, arrangements or understandings relating to options or derivatives Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated. NONE Is a Supplemental Form 8 attached? (Note 9) No Date of disclosure: 24 April 2015 Contact name: Ian Gartshore Telephone number: 0044 207 597 1825 If a connected EFM, name of offeree/ AER LINGUS GROUP PLC (OFFEREE) offeror with which connected If a connected EFM, state nature of Investec Bank are broker and sponsor connection (Note 10) to the offeree