1 OFFICE PROPERTIES N A R E I T R E I T W O R L D 2 0 1 9 A N N UA L C O N F E R E N C E N O V E M B E R 2 0 1 9 D I S C L A I M E R This presentation contains statements that constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and other securities laws. Also, whenever we use words such as "believe", "expect", "anticipate", "intend", "plan", "estimate", "will", "may" and negatives or derivatives of these or similar expressions, we are making forwa ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-34364 OFFICE PROPERTIES INCOME TRUST (Registrant's Telephone Number, Including Area Code) (Exact Name of Registrant as Specified in Its Charter) Securiti ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-34364 OFFICE PROPERTIES INCOME TRUST (Exact Name of Registrant as Specified in Its Charter) Maryland 26-4273474 (State or Other Jurisdiction of Incorporation ...

WASHINGTON, D.C. 20549 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-34364 OFFICE PROPERTIES INCOME TRUST (Exact Name of Registrant as Specified in Its Charter) Maryland 26-4273474 Large accelerated filer ☒ Accelerated filer ☐ ...

OFFICE PROPERTIES INCOME TRUST Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 1-34364 (Exact Name of Registrant as Specified in Its Charter) Maryland (State of Organization) 26-4273474 (IRS Employer Identificati ...