Macquarie Infrastructure Company to Conduct Conference Call and Webcast Covering Second Quarter 2012 Financial Results on Thursday, August 2, 2012

Macquarie Infrastructure Company (NYSE: MIC) will release its financial results for the second quarter of 2012 after the close of market trading on Wednesday, August 1, 2012. MIC has scheduled a conference call and webcast for analysts and investors at 8:00 a.m. Eastern Time on Thursday, August 2, 2012, during which management will discuss the results. The conference call/webcast will be followed by a question and answer session.

To access the conference call please dial +1(650) 521-5252 at least 10 minutes prior to the scheduled start time. Listeners may access the webcast of the conference call on the company’s website at www.macquarie.com/mic.

MIC will prepare printable materials in support of its presentation. A link to the materials will be available on the MIC website the morning of August 2, 2012 prior to the conference call/webcast.

A replay of the webcast will be available after 2:00 p.m. on August 2 through midnight August 16 at +1(404) 537-3406, Passcode: 93685696. An archive of the webcast will be available on the MIC website for one year following the call.

ABOUT MACQUARIE INFRASTRUCTURE COMPANY

Macquarie Infrastructure Company owns, operates and invests in a diversified group of infrastructure businesses providing basic, everyday services to customers in the United States. Its businesses consist of three energy-related businesses including a gas processing and distribution business (The Gas Company in Hawaii), a controlling interest in a district energy business (Thermal Chicago), and a 50% interest in a bulk liquid storage terminal business (International-Matex Tank Terminals). MIC also owns and operates an aviation-related airport services business (Atlantic Aviation). The Company is managed by a wholly-owned subsidiary of Macquarie Group. For additional information, please visit the Macquarie Infrastructure Company website at www.macquarie.com/mic. MIC-G

MIC is not an authorized deposit-taking institution for the purposes of the Banking Act 1959 (Commonwealth of Australia). The obligations of MIC do not represent deposits or other liabilities of Macquarie Bank Limited ABN 46 008 583 542 (MBL). MBL does not guarantee or otherwise provide assurance in respect of the obligations of MIC.