Company: BRSL
Filing Date: 2025-11-18
Form Type: 6-K
Source: 0001628280-25-052772
Chunk: 0

Company: Brightstar Lottery PLC
Filing Date: 2025-11-18
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 |     | ☐ |

<div align='center'>Brightstar Lottery PLC Signs Nine-Year Agreement to Continue Operation of Italy Lotto</div>

On November 18, 2025, Brightstar Lottery PLC (NYSE: BRSL) (the "

#### Company
") announced that its subsidiary, LottoItalia S.r.l., has signed the agreement to operate the Italy Lotto for the next nine years.

A copy of the news release relating to the above matters is set forth in Exhibit 99.1, 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 18, 2025 |     | BRIGHTSTAR LOTTERY PLC |     |                          |
|:------------------------|:----|:-----------------------|:----|:-------------------------|
|                         |     | By:                    |     | /s/ Pierfrancesco Boccia |
|                         |     |                        |     | Pierfrancesco Boccia     |
|                         |     |                        |     | Corporate Secretary      |

<div align='center'>4</div>