Atrium Mortgage Investment Corporation Announces Exercise in Full of Over-Allotment Option

Toronto, Ontario--(Newsfile Corp. - June 21, 2017) - Atrium Mortgage Investment Corporation (TSX: AI) (TSX: AI.DB) (TSX: AI.DB.A) (TSX: AI.DB.B) (TSX: AI.DB.C) is pleased to announce that the underwriters of its offering of 5.30% convertible unsecured subordinated debentures due June 30, 2024 exercised, in full, their previously announced over-allotment option, resulting in the issue of an additional $3,300,000 aggregate principal amount of debentures. The exercise of the over-allotment option brings the total aggregate principal amount of such debentures issued by Atrium to $25,300,000. The debentures are listed on the Toronto Stock Exchange under the symbol "AI.DB.C".

The underwriting syndicate for the offering of debentures was bookrun by TD Securities Inc. and RBC Capital Markets and co-led by CIBC Capital Markets, and included Scotiabank, BMO Capital Markets, National Bank Financial Inc., Canaccord Genuity Corp., GMP Securities L.P., Industrial Alliance Securities Inc. and Raymond James Ltd.

Atrium will use the net proceeds from the exercise of the over-allotment option to repay existing indebtedness under its revolving operating credit facility, which will then be available to be drawn, as required, for general corporate purposes, particularly funding future mortgage loan opportunities.

The details of the debentures are described in Atrium's press release issued on June 13, 2017 in connection with the closing of the offering of the debentures.

No securities regulatory authority has either approved or disapproved of the contents of this news release. The securities being offered have not been, and will not be, registered under the United States Securities Act of 1933, as amended, or any state securities laws, and may not be offered or sold in the United States unless an exemption from registration is available. This news release is for information purposes only and does not constitute an offer to sell or a solicitation of an offer to buy any securities of Atrium in any jurisdiction.

About Atrium

Canada's Premier Non-Bank Lender™

Atrium is a non-bank provider of residential and commercial mortgages that lends in major urban centres in Canada where the stability and liquidity of real estate are high. Atrium's objectives are to provide its shareholders with stable and secure dividends and preserve shareholders' equity by lending within conservative risk parameters.

Atrium is a Mortgage Investment Corporation (MIC) as defined in the Income Tax Act (Canada), so is not taxed on income provided that its taxable income is paid to its shareholders in the form of dividends within 90 days after December 31 each year. Such dividends are generally treated by shareholders as interest income, so that each shareholder is in the same position as if the mortgage investments made by the company had been made directly by the shareholder. For further information, please refer to regulatory filings available at www.sedar.com or Atrium's website at www.atriummic.com.

For further information, please contact

Robert G. Goodall
President and Chief Executive Officer

Jeffrey D. Sherman
Chief Financial Officer

(416) 867-1053
info@atriummic.com
www.atriummic.com

THIS NEWS RELEASE IS NOT FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES.