Press Release

BETHESDA, Md., May 25, 2011 /PRNewswire via COMTEX/ -- American Capital Agency Corp. (Nasdaq: AGNC) ("AGNC" or the "Company") announced today that it has rescheduled its 2011 annual meeting of stockholders, originally scheduled for May 31, 2011. The new meeting date and time is Friday, June 10, 2011 at 9 a.m. (ET). The annual meeting will be held at AGNC, located at 2 Bethesda Metro Center, 14th Floor, Bethesda, Maryland 20814.

The Company also announced that it has supplemented its proxy statement for the 2011 annual meeting to amend the charter amendment proposal to eliminate the proposed increase in the Company's authorized shares of preferred stock and to modify the requested increase in the Company's authorized shares of common stock. The amended proposal now only requests an increase in the authorized number of shares of the Company's common stock to 300,000,000 instead of 500,000,000. The Company rescheduled its annual meeting in order to provide its stockholders with additional time to consider and vote on the amended proposal.

The annual meeting will be held for the purposes set forth below.

1. To elect the Board of Directors, with each director serving a one-year term and until his successor is elected and qualified;
2. To approve an amendment to the Company's Amended and Restated Certificate of Incorporation to increase the total authorized number of shares of common stock from 150,000,000 to 300,000,000;
3. To ratify the selection of Ernst & Young LLP to serve as the Company's independent public accountant for the year ending December 31, 2011; and
4. To transact such other business as may properly come before the meeting or any adjournment thereof.

The Board of Directors of the Company has recommended a vote "FOR" all of the director nominees and "FOR" proposals 2 and 3 above.

Formal notice of the rescheduled meeting and the supplement to the Company's proxy statement and revised proxy card are being mailed today to the Company's stockholders. More information on the items to be discussed at the meeting can be found in the Company's proxy statement, which is available at www.AGNC.com/2011proxymaterials.

Stockholders of record at the close of business on April 11, 2011 are entitled to notice of, and to vote at, the 2011 annual meeting and any adjournment of the meeting. If you wish to vote shares held in your name or attend the annual meeting in person, please register in advance by emailing Investor Relations at [email protected]or by phone at (301) 968-9300. Attendance at the 2011 annual meeting will be limited to persons presenting proof of stock ownership on the record date and picture identification. If you hold shares directly in your name as the stockholder of record, proof of ownership could include a copy of your account statement or a copy of your stock certificate(s). If you hold shares through an intermediary, such as a broker, bank or other nominee, proof of stock ownership could include a proxy from your broker, bank or other nominee or a copy of your brokerage or bank account statement. Additionally, if you intend to vote your shares at the meeting, you must request a "legal proxy" from your broker, bank or other nominee and bring this legal proxy to the meeting.

For further information or questions, please do not hesitate to call the Company's Investor Relations Department at (301) 968-9300 or send an email to [email protected].

ABOUT AMERICAN CAPITAL AGENCY CORP.

American Capital Agency Corp. is a REIT that invests in agency pass-through securities and collateralized mortgage obligations for which the principal and interest payments are guaranteed by a U.S. Government agency or a U.S. Government-sponsored entity. The Company is externally managed and advised by American Capital Agency Management, LLC, an affiliate of American Capital, Ltd. ("American Capital"). For further information, please refer to http://www.agnc.com/.

ABOUT AMERICAN CAPITAL

American Capital is a publicly traded private equity firm and global asset manager. American Capital, both directly and through its asset management business, originates, underwrites and manages investments in middle market private equity, leveraged finance, real estate and structured products. Founded in 1986, American Capital has $37 billion in assets under management and eight offices in the U.S., Europe and Asia. American Capital and its affiliates will consider investment opportunities from $10 million to $300 million. For further information, please refer to http://www.americancapital.com/.

CONTACT:
Investors - (301) 968-9300

SOURCE: American Capital Agency Corp.