# EDGAR Filing Document

**Accession Number:** 0001456772
**File Stem:** 9999999995-26-001722
**Filing Date:** 2026-5
**Character Count:** 1651
**Document Hash:** 284bacedc23617dec00aa2cb15199fea
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**9999999995-26-001722.hdr.sgml**: 20260522

**ACCESSION NUMBER**: 9999999995-26-001722

**CONFORMED SUBMISSION TYPE**: EFFECT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260521

**DATE AS OF CHANGE**: 20260522

**EFFECTIVENESS DATE**: 20260521

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** OFFICE PROPERTIES INCOME TRUST
- **CENTRAL INDEX KEY:** 0001456772
- **STANDARD INDUSTRIAL CLASSIFICATION:** REAL ESTATE [6500]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 264273474
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** EFFECT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-285051
- **FILM NUMBER:** 261010627

**BUSINESS ADDRESS:**
- **STREET 1:** C/O THE RMR GROUP
- **STREET 2:** TWO NEWTON PL., 255 WASH. ST., STE. 300
- **CITY:** NEWTON
- **STATE:** MA
- **ZIP:** 02458
- **BUSINESS PHONE:** (617) 219-1440

**MAIL ADDRESS:**
- **STREET 1:** C/O THE RMR GROUP
- **STREET 2:** TWO NEWTON PL., 255 WASH. ST., STE. 300
- **CITY:** NEWTON
- **STATE:** MA
- **ZIP:** 02458

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GOVERNMENT PROPERTIES INCOME TRUST
- **DATE OF NAME CHANGE:** 20161006

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Government Properties Income Trust
- **DATE OF NAME CHANGE:** 20090220

### UNITED STATES
### SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## Notice of Effectiveness

**Date:** May 21, 2026

**Accession Number:** 0001104659-26-062776

**Form Type:** POS AM

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**CIK:** 0001456772

**Company Name:** OFFICE PROPERTIES INCOME TRUST

**File Number:** 333-285051