Company: BBU
Filing Date: 2025-08-07
Form Type: 6-K
Source: 0001628280-25-039018
Chunk: 0

Company: Brookfield Business Partners L.P.
Filing Date: 2025-08-07
Form: 6-K
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
<div align='center'>____________________________________________________________________________</div>

#### FORM 6-K
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### REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO

#### RULE 13a-16 OR 15d-16

#### UNDER THE SECURITIES EXCHANGE ACT OF 1934

#### For the month of August 2025

#### Commission File Number: 001-37775
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### BROOKFIELD BUSINESS PARTNERS L.P.
<div align='center'>(Translation of registrant's name into English)

____________________________________________________________________________</div>

#### 73 Front Street, 5th Floor

#### Hamilton, HM 12 Bermuda
<div align='center'>(Address of principal executive office)

____________________________________________________________________________

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 ý Form 40-F o

Exhibit 99.1 included in this Form 6-K is incorporated by reference into Brookfield Business Partners L.P.'s registration statements on Form F-3 (File Nos: 333-285450 , 333-273181 and 333-273180-01 ).</div>

### EXHIBIT LIST
| Exhibit 
 99.1    |     | Title                                                                                  
 Brookfield Business Partners L.P.’s interim report for the quarter ended June 30, 2025 |
|:--------|:----|:---------------------------------------------------------------------------------------|
| 99.2    |     | Form 52 — 109F2 — Certification of Interim Filings — CEO                               |
| 99.3    |     | Form 52 — 109F2 — Certification of Interim Filings — CFO                               |

### 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.

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EXHIBIT LIST

SIGNATURES