Company: CAG
Filing Date: 2025-07-15
Form Type: 424B5
Source: 0001104659-25-067959
Chunk: 4

Company: CONAGRA BRANDS INC.
Filing Date: 2025-07-15
Form: 424B5
Chunk 4
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us;

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we can disclose important information to you by referring you to those documents; and

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information that we file with the SEC after the date of this prospectus supplement will automatically update and supersede the information contained in this prospectus supplement, the accompanying prospectus and incorporated filings.

We incorporate by reference the documents listed below that we filed with the SEC under the Exchange Act:

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our Annual Report on Form 10-K for the fiscal year ended May 25, 2025;

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the portions of our Definitive Proxy Statement on Schedule 14A filed with the SEC on August 7, 2024incorporated by reference into our Annual Report on Form 10-K for the fiscal year ended May 26, 2024; and

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our Current Reports on Form 8-K filed with the SEC on June 18, 2025and June 30, 2025.

We also incorporate by reference each of the documents that we file with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act on or after the date of this prospectus supplement and until the

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completion of the offering of securities described in this prospectus supplement. We will not, however, incorporate by reference in this prospectus supplement or the accompanying prospectus any documents or portions thereof that are not deemed “filed” with the SEC, including any information furnished pursuant to Item 2.02 or Item 7.01 of our Current Reports on Form 8-K after the date of this prospectus supplement unless, and except to the extent, specified in such Current Reports.

We will provide to each person, including any beneficial owner of our securities to whom this prospectus supplement is delivered, a copy of any or all of the documents that have been incorporated by reference in this prospectus supplement or the accompanying prospectus but not delivered with this prospectus supplement or the accompanying prospectus (other than an exhibit to these documents, unless the exhibit is specifically incorporated by reference into the filing requested) at no cost, if you submit a request to us by writing or telephoning us at the following address or telephone number:

<div align='center'>Conagra Brands, Inc. 
 222 W. Merchandise Mart Plaza, Suite 1300 
 Chicago, Illinois 60654 
 Attention: Corporate Secretary 
 (312) 549-5000</div>

### NOTICE TO PROSPECT