Office Properties Income Trust

Item 8.01. Other Events. On September 10, 2026, we announced that we priced an offering of $425 million aggregate principal amount of 8.75% Senior Secured Notes due 2031 (the “Notes”) in a private offering to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”), and outside the United States to non-United States persons in compliance with Regulation S under the Securities Act. A copy of the press release announcing the pricing of the offering is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The offer and sale of the Notes and the related guarantees have not been and will not be registered under the Securities Act or any state securities laws, and, unless so registered, the Notes and the related guarantees may not be offered or sold in the United States or to U.S. persons except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act and applicable state securities laws. Warning Concerning Forward-Looking Statements This Current Report contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and other securities laws. These statements include statements about the expected closing date of the offering of the Notes and the use of proceeds therefrom. These forward-looking statements are based upon our present intent, beliefs and expectations, but these statements and the implications of these statements are not guaranteed to occur and may not occur for various reasons, some of which are beyond our control. The closing of the offering is subject to various customary conditions and contingencies. If these conditions are not satisfied or the specified contingencies do not occur, the offering may not close. Further, our current intentions with respect to the use of the net proceeds from the offering to repay all of the outstanding borrowings under our secured revolving credit facility and our secured term loan is dependent on the closing of the offering and may not occur. The information contained in our filings with the Securities and Exchange Commission (“SEC”), including under the caption “Risk Factors” in our periodic reports, or incorporated therein, identifies other important factors that could cause differences from our forward-looking statements. Our filings with the SEC are available on the SEC’s website at www.sec.gov. You should not place undue reliance upon any forward-looking statements. Except as required by law, we do not intend to update or change any forward-looking statements as a result of new information, future events or otherwise.