Exhibit 99.1

FOR IMMEDIATE RELEASE

AIG ANNOUNCES FINAL RESULTS OF ITS TENDER OFFER

NEW YORK, April 14, 2015 – American International Group, Inc. (NYSE: AIG) today announced the final results as of 11:59 p.m., New York City time, on April 13, 2015 (the “Expiration Date”), of its previously announced cash tender offer for up to $1.25 billion maximum aggregate purchase price of the notes and debentures issued or guaranteed by AIG listed in the table below, pursuant to its offer to purchase dated March 17, 2015. As previously announced, the early participation date for the tender offer was 5:00 p.m., New York City time, on March 30, 2015. The complete terms of the tender offer, including certain capitalized terms used but not defined herein, are set forth in the offer to purchase and the related letter of transmittal.

As previously announced, the tender offer was oversubscribed. Accordingly, AIG has accepted all notes and debentures validly tendered and not withdrawn of acceptance priority levels 1 through 6. Validly tendered debentures of acceptance priority level 7 have been accepted on a prorated basis, as described in the offer to purchase and set forth in the table below. No notes or debentures of acceptance priority levels 8 through 17 have been accepted by AIG.

As of the Expiration Date, the principal amount of notes and debentures of each series validly tendered and accepted by AIG, the acceptance priority level and the Total Consideration per $1,000, £1,000 or €1,000 principal amount are as set forth in the table below. The Total Consideration includes an early participation amount of $50, £50 or €50 per $1,000, £1,000 or €1,000 principal amount, as applicable, of notes and debentures validly tendered prior to 5:00 p.m., New York City time, on March 30, 2015 and accepted for purchase. Holders who validly tendered their notes or debentures after the early participation date and on or prior to the Expiration Date and whose notes or debentures have been accepted for purchase will receive only the Tender Offer Consideration, which is equal to the Total Consideration less the early participation amount.

The payment date is expected to be on or about April 15, 2015. Holders whose notes and debentures are accepted in this tender offer will also receive a cash payment representing accrued interest from the most recent interest payment date to but excluding the payment date.

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AIG retained Barclays Bank PLC, Barclays Capital Inc., BofA Merrill Lynch, Goldman, Sachs & Co. and Goldman Sachs International as the Joint Lead Dealer Managers. Global Bondholder Services Corporation was the Information Agent and Depositary. For additional information regarding the expiration of the tender offer or the expected Payment Date, please contact: Barclays Bank PLC at +44 (0) 207 773 8990 (international); Barclays Capital Inc. at (800) 438-3242 (toll-free) or (212) 528-7581 (collect); BofA Merrill Lynch at +44 (0) 20 7995 2929 (international), (888) 292-0070 (toll-free) or (980) 387-3907 (collect); Goldman, Sachs & Co. at (800) 828-3182 (toll-free) or (212) 902-5183 (collect); Goldman Sachs International at +44 (0) 207 774 9862 (international); or Global Bondholder Services Corporation by telephone at (212) 430-3774 (for banks and brokers only), (866) 924-2200 (for all others toll-free) or +001-212-430-3774 (international), or by email at aig@gbsc-usa.com.

Certain statements in this press release, including those describing the completion of the tender offer, constitute forward-looking statements. These statements are not historical facts but instead represent only AIG’s belief regarding future events, many of which, by their nature, are inherently uncertain and outside AIG’s control. It is possible that actual results will differ, possibly materially, from the anticipated results indicated in these statements. Factors that could cause actual results to differ, possibly materially, from those in the forward-looking statements are discussed throughout AIG’s periodic filings with the SEC pursuant to the Securities Exchange Act of 1934.

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American International Group, Inc. (AIG) is a leading global insurance organization serving customers in more than 100 countries and jurisdictions. AIG companies serve commercial, institutional, and individual customers through one of the most extensive worldwide property-casualty networks of any insurer. In addition, AIG companies are leading providers of life insurance and retirement services in the United States. AIG common stock is listed on the New York Stock Exchange and the Tokyo Stock Exchange.

Additional information about AIG can be found at www.aig.com | YouTube: www.youtube.com/aig | Twitter: @AIGinsurance  |   LinkedIn: http://www.linkedin.com/company/aig

AIG is the marketing name for the worldwide property-casualty, life and retirement, and general insurance operations of American International Group, Inc. For additional information, please visit our website at www.aig.com. All products and services are written or provided by subsidiaries or affiliates of American International Group, Inc. Products or services may not be available in all countries, and coverage is subject to actual policy language. Non-insurance products and services may be provided by independent third parties. Certain property-casualty coverages may be provided by a surplus lines insurer. Surplus lines insurers do not generally participate in state guaranty funds, and insureds are therefore not protected by such funds.

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