X0508 4 2025-12-19 0 0001320695 TreeHouse Foods, Inc. THS 0001808900 ODonnell Patrick M 2021 SPRING ROAD, SUITE 600 OAK BROOK IL 60523 0 1 0 0 EVP, Chief Financial Officer 0 Common Stock 2025-12-19 4 M 0 5307 0 A 21119 D Common Stock 2025-12-19 4 F 0 1555 23.60 D 19564 D Common Stock 2025-12-19 4 M 0 6250 0 A 25814 D Common Stock 2025-12-19 4 F 0 1832 23.60 D 23982 D Common Stock 2025-12-19 4 M 0 749 0 A 24731 D Common Stock 2025-12-19 4 F 0 220 23.60 D 24511 D Restricted Stock Unit 2025-12-19 4 M 0 5307 0 D Common Stock 5307 5307 D Restricted Stock Unit 2025-12-19 4 M 0 6250 0 D Common Stock 6250 12500 D Restricted Stock Unit 2025-12-19 4 M 0 749 0 D Common Stock 749 0 D Settlement of restricted stock units into shares of common stock. Shares withheld to satisfy minimum tax withholding requirements upon vesting of restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of TreeHouse Foods, Inc. This award was scheduled to vest in three equal installments on 03/15/2025, 03/15/2026, and 03/15/2027, subject to the reporting person's continued service through such vesting date but the vesting of the portion reflected herein was accelerated from 03/15/2026 in order to mitigate the adverse impact to the Issuer and the Reporting Person of Section 280G of the Internal Revenue Code in connection with the pending transaction between the Issuer and Industrial F&B Investments III Inc. ("Section 280G Mitigation"). This award will be subject to clawback in the event it is determined that the Reporting Person would not have ultimately vested in the award notwithstanding the acceleration reflected herein. This award was scheduled to vest in three equal installments on 02/27/2026, 02/27/2027, and 02/27/2028, subject to the reporting person's continued service through such vesting date but the vesting of the portion reflected herein was accelerated from 02/27/2026 in connection with the Section 280G Mitigation. This award was scheduled to vest in three equal installments on 03/13/2024, 03/13/2025, and 03/13/2026, subject to the reporting person's continued service through such vesting date but the vesting of the portion reflected herein was accelerated from 03/13/2026 in connection with the Section 280G Mitigation. /s/ Kristy N. Waterman, by Power of Attorney 2025-12-22