Select Income REIT (NYSE: SIR) today announced that it commenced a public offering of 6,000,000 common shares. SIR expects to use the net proceeds from this offering to repay amounts outstanding under its revolving credit facility. It is contemplated that the underwriters will also be granted a 30-day option to purchase up to an additional 900,000 common shares. Morgan Stanley, BofA Merrill Lynch and Wells Fargo Securities are the joint book running managers for the offering. Citigroup, Jefferies, RBC Capital Markets and UBS Investment Bank are the joint lead managers. Janney Montgomery Scott and Oppenheimer & Co. are the co-managers. A registration statement relating to these securities has been filed with the Securities and Exchange Commission (SEC), but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This press release is neither an offer to sell nor a solicitation of an offer to buy shares, nor shall there be any sale of these securities in any state or jurisdiction in which the offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state or jurisdiction. The preliminary prospectus relating to this offering has been filed with the SEC, and copies can be obtained by contacting the offices of: Morgan Stanley & Co. LLC, Attention: Prospectus Department,180 Varick Street, 2 nd floor, New York, New York, 10014; Attention: Prospectus Department, by email at firstname.lastname@example.org; BofA Merrill Lynch, 222 Broadway, New York, New York, 10038; Attention: Prospectus Department, by email at email@example.com; or Wells Fargo Securities, Attention: Equity Syndicate Department, 375 Park Avenue, New York, New York, 10152, by email at firstname.lastname@example.org. WARNING CONCERNING FORWARD LOOKING STATEMENTS THIS PRESS RELEASE CONTAINS FORWARD LOOKING STATEMENTS WITHIN THE MEANING OF THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995 AND OTHER SECURITIES LAWS. THESE FORWARD LOOKING STATEMENTS ARE BASED UPON SIR’S PRESENT BELIEFS AND EXPECTATIONS, BUT THESE STATEMENTS ARE NOT GUARANTEED. FOR EXAMPLE, ALTHOUGH THIS PRESS RELEASE REFERS TO AN OFFERING OF 6,000,000 COMMON SHARES, GREATER OR FEWER THAN 6,000,000 COMMON SHARES MAY BE SOLD, OR THIS OFFERING MAY BE WITHDRAWN. INVESTORS SHOULD NOT PLACE UNDUE RELIANCE UPON ANY FORWARD LOOKING STATEMENT.