Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
PORTNOY ADAM D.
  2. Issuer Name and Ticker or Trading Symbol
GOVERNMENT PROPERTIES INCOME TRUST [NASDAQ:OPI]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O THE RMR GROUP LLC,, TWO NEWTON PL., 255 WASH. ST., STE. 300
3. Date of Earliest Transaction (Month/Day/Year)
12/31/2018
(Street)

NEWTON, MA 02458
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Shares of Beneficial Interest 12/31/2018   A   111,836 A $ 0 (1) 529,803 (2) D  
Common Shares of Beneficial Interest 12/31/2018   A   1,543,253 A $ 0 (3) 2,305,034 (2) I See Footnote (4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
PORTNOY ADAM D.
C/O THE RMR GROUP LLC,
TWO NEWTON PL., 255 WASH. ST., STE. 300
NEWTON, MA 02458
  X      

Signatures

 /s/ Adam D. Portnoy   01/02/2019
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Acquired pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of September 14, 2018, by and among the issuer, GOV MS REIT, a wholly owned subsidiary of the issuer, and Select Income REIT ("SIR") in exchange for 107,535 SIR common shares of beneficial interest having a market value of $7.36 per share on the effective date of the merger of SIR with and into GOV MS REIT (the "Merger"), based on the closing price of SIR's common shares of beneficial interest on such effective date.
(2) Following the closing of the Merger on December 31, 2018, the issuer changed its name from Government Properties Income Trust to Office Properties Income Trust, and the issuer effected a reverse share split (the "Reverse Split") pursuant to which every four common shares of the issuer were converted and reclassified into one common share of the issuer, subject to the receipt of cash in lieu of fractional shares. The amounts set forth in the table are presented prior to giving effect to the impact of the Reverse Split.
(3) Acquired pursuant to the Merger Agreement in exchange for 1,483,898 SIR common shares of beneficial interest having a market value of $7.36 per share on the effective date of the Merger, based on the closing price of SIR's common shares of beneficial interest on such effective date.
(4) These shares are held by ABP Trust; Mr. Portnoy, as president, sole trustee and a beneficial owner of ABP Trust, may be deemed to be a beneficial owner of these shares, but Mr. Portnoy disclaims such beneficial ownership except to the extent of his pecuniary interest therein.

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