Press Release

AIG

175 Water Street

New York, NY

10038

www.aig.com

Exhibit 99.1

FOR IMMEDIATE RELEASE

Contacts:

Liz Werner (Investors): 212-770-7074; elizabeth.werner@aig.com

Fernando Melon (Investors): 212-770-4630; fernando.melon@aig.com

Jennifer Hendricks Sullivan (Media): 212-770-3141; jennifer.sullivan@aig.com

AIG ANNOUNCES EARLY PARTICIPATION RESULTS OF ITS CASH TENDER OFFER

NEW YORK, March 8, 2016 – American International Group, Inc. (NYSE: AIG) today announced the results as of the early participation date of its previously announced cash tender offer for the notes and debentures issued or guaranteed by AIG listed in the table below. As previously announced, the early participation date for the tender offer was 5:00 p.m., New York City time, on March 7, 2016. The complete terms of the tender offer are set forth in the offer to purchase dated February 23, 2016 (the “Offer to Purchase”) and the related letter of transmittal. The expiration date of the tender offer is 11:59 p.m., New York City time, on March 21, 2016, unless extended. The payment date for this tender offer will be promptly following its expiration and is expected to be on or about March 23, 2016. Consummation of the tender offer is subject to a number of conditions (as described in the Offer to Purchase). Withdrawal rights for the tender offer expired at 5:00 p.m., New York City time, on March 7, 2016 and have not been extended.

AIG intends to accept for purchase all notes and debentures validly tendered and not withdrawn prior to 5:00 p.m., New York City time, on March 7, 2016; provided that if the aggregate principal amount of notes or debentures validly tendered prior to the expiration date exceeds $1.0 billion, AIG will accept for payment all notes or debentures validly tendered in accordance with the acceptance priority levels set forth in the table below. If there are sufficient remaining funds to purchase some, but not all, of the remaining tendered notes or debentures at any acceptance priority level without exceeding the tender cap, AIG will accept for payment such tendered notes or debentures on a prorated basis.

As previously announced, the applicable “Reference Yield” and resulting “Total Consideration” for each series of notes and debentures included in the tender offer will be determined (i) with respect to each series of notes or debentures denominated in U.S. Dollars at 10:00 a.m., New York City time, today and (ii) with respect to each series of securities denominated in Sterling or Euro at 3:00 p.m., London time, today. See the Offer to Purchase for additional information.

Copies of the Offer to Purchase and the related letter of transmittal are available at the following web address: http://www.gbsc-usa.com/aig/.

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This press release is qualified in its entirety by the Offer to Purchase and related letter of transmittal.

AIG has retained Credit Suisse Securities (Europe) Limited, Credit Suisse Securities (USA) LLC and Wells Fargo Securities, LLC as the Joint Lead Dealer Managers. Global Bondholder Services Corporation is the Information Agent and Depositary. For additional information regarding the terms of the tender offer, please contact: Credit Suisse Securities (Europe) Limited at +44 (0) 207 888 5564; Credit Suisse Securities (USA) LLC at (800) 820-1653 (toll-free) or (212) 538-2147 (collect); or Wells Fargo Securities, LLC at (866) 309-6316 (toll-free) or (704) 410-4760 (collect). Requests for documents and questions regarding the tendering of securities may be directed to 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), by email at aig@gbsc-usa.com or to the Joint Lead Dealer Managers at their respective telephone numbers.

This news release does not constitute an offer or an invitation by AIG to participate in the tender offer in any jurisdiction in which it is unlawful to make such an offer or solicitation in such jurisdiction.

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. Founded in 1919, today we provide a wide range of property casualty insurance, life insurance, retirement products, mortgage insurance and other financial services to customers in more than 100 countries and jurisdictions. Our diverse offerings include products and services that help businesses and individuals protect their assets, manage risks and provide for retirement security. 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 and www.aig.com/strategyupdate | YouTube: www.youtube.com/aig | Twitter: @AIGinsurance | LinkedIn: http://www.linkedin.com/company/aig. These references with additional information about AIG have been provided as a convenience, and the information contained on such websites is not incorporated by reference into this press release.

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.