Company: THS
Filing Date: 2025-03-03
Form Type: PRER14A
Source: 0001320695-25-000014
Chunk: 0

Company: TreeHouse Foods, Inc.
Filing Date: 2025-03-03
Form: PRER14A
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
<div align='center'>(Rule 14a-101)</div>

#### SCHEDULE 14A INFORMATION
<div align='center'>Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No.__ )</div>

| ☒ |     | Filed by the Registrant |     | ☐ |     | Filed by a Party other than the Registrant |

| CHECK THE APPROPRIATE BOX: |     |                                                                                 |
| ☒                          |     | Preliminary Proxy Statement                                                     |
| ☐                          |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐                          |     | Definitive Proxy Statement                                                      |
| ☐                          |     | Definitive Additional Materials                                                 |
| ☐                          |     | Soliciting Material Under §240.14a-12                                           |

#### TREEHOUSE FOODS, INC.
<div align='center'>(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</div>

| PAYMENT OF FILING FEE (CHECK ALL BOXES THAT APPLY): |     |                                                                                                     |
| ☒                                                   |     | No fee required                                                                                     |
| ☐                                                   |     | Fee paid previously with preliminary materials                                                      |
| ☐                                                   |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |

| Notice of Annual Meeting 
 of Stockholders          |

| Meeting Details                           
 DATE AND TIME                             
 Thursday, April 24, 2025                  
 9:00 a.m. CT                              
 LOCATION                                  
 Via live webcast at                       
 www.virtualshareholdermeeting.com/THS2025 |     |           |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                To the Stockholders of TreeHouse Foods, Inc.: 
                                                                                                                                                                                                                                                                                                                    You are cordially invited to the Annual Meeting of Stockholders (“Annual Meeting”) of TreeHouse Foods, Inc. ("TreeHouse Foods," “TreeHouse,” “Company,” "we," "us," or "our," as the context requires) to be held on Thursday, April 24, 2025, at 9:00 a.m. Central Time. 
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