Company: BRSL
Filing Date: 2025-11-04
Form Type: 6-K
Source: 0001628280-25-048518
Chunk: 0

Company: Brightstar Lottery PLC
Filing Date: 2025-11-04
Form: 6-K
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### WASHINGTON, D.C. 20549

#### FORM 6-K

### REPORT OF FOREIGN PRIVATE ISSUER

#### PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE

#### SECURITIES EXCHANGE ACT OF 1934

#### For the month of November 2025

#### Commission File Number 001-36906

### BRIGHTSTAR LOTTERY PLC
<div align='center'>(Translation of registrant’s name into English)</div>

#### 10 Finsbury Square, Third Floor

#### London, EC2A 1AF

#### United Kingdom
<div align='center'>(Address of principal executive offices)</div>

| Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F: |     |   |     |           |     |   |
| Form 20-F                                                                                                              |     | ☒ |     | Form 40-F |     | ☐ |

### Third Quarter 2025 Results of Brightstar Lottery PLC
On November 4, 2025, Brightstar Lottery PLC (NYSE: BRSL) (the "

#### Company
") reported results for the quarter ended September 30, 2025.

On November 4, 2025, the Company also announced that the Board of Directors declared a quarterly cash dividend of $0.22 per share on its ordinary shares. The dividend is payable on December 2, 2025 to holders of record as of the close of business on November 18, 2025.

A copy of the news release relating to the above matters is set forth in Exhibit 99.1, which is being furnished herewith. In addition, a slide presentation relating to the results is set forth in Exhibit 99.2, which is being furnished herewith.

<div align='center'>2</div>

### EXHIBIT INDEX
<div align='center'>3</div>

### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

| Date: November 4, 2025 |     | BRIGHTSTAR LOTTERY PLC |     |                          |
|:-----------------------|:----|:-----------------------|:----|:-------------------------|