Company: TRTN-PA
Filing Date: 2025-02-06
Form Type: 8-A12B
Source: 0001193125-25-021807
Chunk: 1

Company: Triton International Ltd
Filing Date: 2025-02-06
Form: 8-A12B
Chunk 1
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, 2024 (the “Base Prospectus” and together with the Prospectus Supplement, the “Prospectus”) relating to the offering of the Series F Preference Shares, which Prospectus forms a part of the Registrant’s Registration Statement on Form F-3(File No. 333-283474)that was declared effective by the Securities and Exchange Commission on January 10, 2025. Reference is made specifically to the section in the Base Prospectus captioned “Description of Share Capital” and to the section in the Prospectus Supplement captioned “Description of Series F Preference Shares.” Item 2. Exhibits.

| Exhibit 
 No.     
 3.1     
 3.2     |     | Description                                                                                                                                                  
 Amended and Restated Bye-Laws of Triton International Limited, dated April                                                                                   
 27, 2021 (incorporated by reference to Exhibit 3.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2021, filed July 27, 2021). 
 Memorandum of Association of Triton International Limited, dated September 29, 2015, as amended September                                                    
 28, 2023 (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K, filed September 28, 2023).                                   |
|:--------|:----|:-------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 4.1     |     | Certificate of Designations of 7.625% Series F Cumulative Redeemable Perpetual Preference Shares (incorporated by reference to Exhibit 4.1 to                
 the Company’s Current Report on Form 6-K filed February 6, 2025).                                                                                            |

SIGNATURE Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized.

| Date: February 6, 2025 |     | TRITON INTERNATIONAL LIMITED 
 By:                          |     | /s/ Carla L. Heiss                                   |
|:-----------------------|:----|:-----------------------------|:----|:-----------------------------------------------------|
|                        |     | Name:                        |     | Carla L. Heiss                                       |
|                        |     | Title:                       |     | Senior Vice President, General Counsel and Secretary |