X0508 4 2025-11-18 0 0001530950 Post Holdings, Inc. POST 0001557413 GRAY DIEDRE J C/O POST HOLDINGS, INC. 2503 S. HANLEY ROAD ST. LOUIS MO 63144 0 1 0 0 EVP, GC & CAO, SECY 0 Common Stock 2025-11-18 4 A 0 17104 0 A 64737 D Common Stock 2025-11-18 4 A 0 8123 0 A 72860 D Common Stock 123929 I By Trust Common Stock 45839 I By Spouse's Trust Each restricted stock unit ("RSU") represents a contingent right to receive one share of Post Holdings, Inc. ("Post") common stock. The RSUs were granted under the Post Holdings, Inc. Amended and Restated 2021 Long-Term Incentive Plan (the "A&R 2021 LTIP") in a transaction exempt under Rule 16b-3 and vest in equal annual increments over three years, subject to the terms of the award agreement. Each RSU represents a contingent right to receive one share of Post common stock. The RSUs were granted under the A&R 2021 LTIP in a transaction exempt under Rule 16b-3 and vest in full on the first anniversary of the date of grant, subject to the terms of the award agreement. /s/ Diedre J. Gray 2025-11-20