Office Properties Income Trust ("OPI") today announced that the characterization of dividends for 2025 income tax reporting purposes is as follows:

OPI Common Shares

			Dividend Allocation Per Share
				Section		Total	Unrecaptured	Section 897
Record	Paid/Payable	Dividends	Ordinary	199A	Qualified	Capital	Section 1250	Capital	Return of
Dates	Dates	Per Share	Income	Dividend⁽¹⁾	Dividend⁽²⁾	Gain	Gain⁽³⁾	Gain	Capital
01/27/25	02/20/25	$0.01	$0.0000	$0.0000	$0.0000	$0.0000	$0.0000	$0.0000	$0.0100
04/22/25	05/15/25	$0.01	$0.0000	$0.0000	$0.0000	$0.0000	$0.0000	$0.0000	$0.0100
	TOTALS:	$0.02	$0.0000	$0.0000	$0.0000	$0.0000	$0.0000	$0.0000	$0.0200

(1)	Section 199A Dividends are a subset of, and included in, the Ordinary Income amount.
(2)	Qualified Dividends are a subset of, and included in, the Ordinary Income amount.
(3)	Unrecaptured Section 1250 Gain is a subset of, and included in, the Total Capital Gain amount.

OPI's common share CUSIP number is 67623C109. This information represents final income allocations.

Shareholders should look to IRS Form 1099-DIV for their tax reporting. This press release is not intended to replace the Form 1099-DIV. For additional information regarding the effect on the tax basis of OPI shares, please see Form(s) 8937 published on the OPI website: https://www.opireit.com/investors/stock-information/default.aspx#distributions

About Office Properties Income Trust

OPI is a national REIT focused on owning and leasing office properties to high credit quality tenants in markets throughout the United States. OPI's property portfolio consists of 122 wholly owned properties located in 29 states and the District of Columbia, containing approximately 17.1 million rentable square feet. OPI is managed by The RMR Group (NASDAQ:RMR), a leading U.S. alternative asset management company with approximately $39 billion in assets under management as of September 30, 2025, and more than 35 years of institutional experience in buying, selling, financing and operating commercial real estate. OPI is headquartered in Newton, MA.

A Maryland Real Estate Investment Trust with transferable shares of beneficial interest listed on the Nasdaq.

No shareholder, Trustee or officer is personally liable for any act or obligation of the Trust.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260120996148/en/

Kevin Barry, Senior Director, Investor Relations

(617) 219-1410

Office Properties Income Trust Announces 2025 Dividend Allocations