# EDGAR Filing Document

**Accession Number:** 0000803649
**File Stem:** 0000803649-25-000048
**Filing Date:** 2025-6
**Character Count:** 3176
**Document Hash:** ad0ce6ab44ff2ca5ced006e2f4ffbd46
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000803649-25-000048.hdr.sgml**: 20250613

**ACCESSION NUMBER**: 0000803649-25-000048

**CONFORMED SUBMISSION TYPE**: 15-12G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250613

**DATE AS OF CHANGE**: 20250613

**EFFECTIVENESS DATE**: 20250613

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Equity Commonwealth
- **CENTRAL INDEX KEY:** 0000803649
- **STANDARD INDUSTRIAL CLASSIFICATION:** REAL ESTATE INVESTMENT TRUSTS [6798]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 046558834
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 15-12G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-09317
- **FILM NUMBER:** 251044711

**BUSINESS ADDRESS:**
- **STREET 1:** TWO NORTH RIVERSIDE PLAZA
- **STREET 2:** SUITE 2000
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 312.646.2800

**MAIL ADDRESS:**
- **STREET 1:** TWO NORTH RIVERSIDE PLAZA
- **STREET 2:** SUITE 2000
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CommonWealth REIT
- **DATE OF NAME CHANGE:** 20100702

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HRPT PROPERTIES TRUST
- **DATE OF NAME CHANGE:** 19980701

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HEALTH & RETIREMENT PROPERTIES TRUST
- **DATE OF NAME CHANGE:** 19940811

---

| |
|:---|
| **UNITED STATES** |
| **SECURITIES AND EXCHANGE COMMISSION** |
| **Washington, D.C. 20549** |
| **FORM 15** |
| **CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION<br>UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.**  |
| **Commission File Number 001-09317** |
| **EQUITY COMMONWEALTH** |
| (Exact name of registrant as specified in its charter) |
| **Two North Riverside Plaza, Suite 2000** |
| **Chicago, IL 60606** |
| **(312) 646-2800** |
| (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)  |
| **Common Shares of Beneficial Interest** |
| (Title of each class of securities covered by this Form) |
| **N/A** |
| (Title of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains) |

---

Please place an X in the box(es) to designate appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

---

| | |
|:---|:---|
| Rule 12g-4(a)(1) | ☒ |
| Rule 12g-4(a)(2) | ☐ |
| Rule 12h-3(b)(1)(i) | ☒ |
| Rule 12h-3(b)(1)(ii) | ☐ |
| Rule 15d-6 | ☐ |
| Rule 15d-22(b)  | ☐ |

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Approximate number of holders of record as of the certification or notice date: Zero

Pursuant to the requirements of the Securities Exchange Act of 1934, Equity Commonwealth has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

---

| | | | |
|:---|:---|:---|:---|
| Date: | June 13, 2025 | By: | /s/ Orrin S. Shifrin |
|  |  | Name: | Orrin S. Shifrin |
|  |  | Title: | Executive Vice President, General Counsel and Secretary |

---

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