v3.26.1
Employee Benefit Plan, Schedule, Asset Held for Investment (Tables)
 12 Months Ended
Dec. 31, 2025
EBP 001  
EBP, Investment, Fair Value and NAV [Line Items]  
EBP, Schedule of Asset Held for Investment
Post Holdings, Inc.
Savings Investment Plan
EIN 45-3355106 Plan 001
Schedule H, Line 4i - Schedule of Assets (Held at End of Year)
December 31, 2025
Identity of Issuer, Borrower, Lessor or Similar PartyDescription of InvestmentCostCurrent Value
*The Vanguard Group
Mutual Fund - Vanguard Explorer Fund Admiral Shares
**$9,425,514 
*The Vanguard Group
Mutual Fund - Vanguard Extended Market Index Fund Institutional Shares
**22,519,689 
*The Vanguard Group
Mutual Fund - Vanguard Federal Money Market Fund
**24,471,772 
*The Vanguard Group
Mutual Fund - Vanguard Institutional Index Fund Institutional Shares
**106,452,108 
*The Vanguard Group
Mutual Fund - Vanguard International Growth Fund Admiral Shares
**13,970,706 
*The Vanguard Group
Mutual Fund - Vanguard PRIMECAP Fund Admiral Shares
**44,153,193 
*The Vanguard Group
Mutual Fund - Vanguard Real Estate Index Fund Institutional Shares
**7,677,943 
*The Vanguard Group
Mutual Fund - Vanguard Small-Cap Index Fund Institutional Shares
**13,661,624 
*The Vanguard Group
Mutual Fund - Vanguard Strategic Small-Cap Equity Fund
**8,954,285 
*The Vanguard Group
Mutual Fund - Vanguard Total Bond Market Index Fund Instl Shares
**35,188,605 
*The Vanguard Group
Mutual Fund - Vanguard Total Intl Bond Index Fund Admiral Shares
**5,369,424 
*The Vanguard Group
Mutual Fund - Vanguard Total Intl Stock Index Fund Instl Shares
**33,763,552 
*The Vanguard Group
Mutual Fund - Vanguard Wellington Fund Admiral Shares
**35,418,449 
*The Vanguard Group
Mutual Fund - Vanguard Windsor II Fund Admiral Shares
**19,013,998 
Total Investment in Shares in Mutual Funds
380,040,862 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2020 Trust I**38,143,248 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2025 Trust I**84,223,450 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2030 Trust I**173,684,829 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2035 Trust I**143,229,354 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2040 Trust I**103,340,974 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2045 Trust I**74,038,063 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2050 Trust I**67,022,055 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2055 Trust I**39,701,454 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2060 Trust I**18,161,409 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2065 Trust I**9,430,003 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement 2070 Trust I**2,156,103 
*The Vanguard GroupCollective Trust - Vanguard Target Retirement Income Trust I**18,630,112 
*The Vanguard GroupCollective Trust - Vanguard Retirement Savings Trust III**19,032,602 
Total Investment in Units in Collective Trusts
790,793,656 
*Post Holdings, Inc.
Common Stock Fund - Post Holdings, Inc. Common Stock
**21,232,910 
*Loans to Participants
Loans to Participants (various maturity dates, 4.25% - 10.5% interest)
— 26,425,961 
$1,218,493,389 
* Party-in-Interest
** Participant-directed investment