# EDGAR Filing Document

**Accession Number:** 0001794846
**File Stem:** 0001193125-25-273550
**Filing Date:** 2025-11
**Character Count:** 2884
**Document Hash:** 7e806a72c0cfb1b67186bbe2b55787dc
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-273550.hdr.sgml**: 20251110

**ACCESSION NUMBER**: 0001193125-25-273550

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

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251110

**DATE AS OF CHANGE**: 20251110

**EFFECTIVENESS DATE**: 20251110

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Atlas Corp.
- **CENTRAL INDEX KEY:** 0001794846
- **STANDARD INDUSTRIAL CLASSIFICATION:** DEEP SEA FOREIGN TRANSPORTATION OF FREIGHT [4412]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** 1T
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 15-12G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39237
- **FILM NUMBER:** 251465036

**BUSINESS ADDRESS:**
- **STREET 1:** 2600-200 GRANVILLE STREET
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 1S4
- **BUSINESS PHONE:** 604-638-2575

**MAIL ADDRESS:**
- **STREET 1:** 2600-200 GRANVILLE STREET
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 1S4

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**FORM 15** 

**CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION** 

**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: 001-39237** 

## ATLAS CORP.
**(Translation of registrant's name into English)** 

**23 Berkeley Square** 

**London, United Kingdom** 

**W1J 6HE** 

**(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)** 

**Common Shares, par value of $0.01 per share** 

**Series D Preferred Shares, par value of $0.01 per share** 

**Series H Preferred Shares, par value of $0.01 per share** 

**7.125% Senior Notes due 2027** 

**(Title of each class of securities covered by this Form)** 

**None** 

**(Titles 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 the 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) | ☐ |

---

Approximate number of holders of record as of the certification or notice date: One (1) holder

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

---

| | | |
|:---|:---|:---|
| Date: November 10, 2025 | **Atlas Corp.** | **Atlas Corp.** |
|  | By: | */s/ Peter Li* |
|  | Name: | Peter Li |
|  | Title: | Secretary and General Counsel |

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