Fundz

Post Holdings Appoints Matthew J. Mainer as Interim Chief Accounting Officer

PUBLIC · POSTOct 16, 2026
Internal move“Mainer is currently the Executive Vice President, Chief Financial Officer and Treasurer of the Company.”

Position

Chief Accounting Officer

Company

Post Holdings

Matthew J. Mainer
St. LouisFood and BeverageAgriculture and FarmingRetailFarmingFood Processing

Description

On October 13, 2026, Post Holdings, Inc. announced that Matthew J. Mainer will serve as Interim Chief Accounting Officer during the temporary medical leave of absence of Bradly A

Quick answer

Post Holdings Appoints Matthew J. Mainer as Interim Chief Accounting Officer (October 16, 2026). Post Holdings is based in St. Louis, Missouri, United States.

Who is the new Chief Accounting Officer at Post Holdings?
Post Holdings named Matthew J. Mainer Chief Accounting Officer, announced October 16, 2026.
What did Post Holdings announce on October 16, 2026?
On October 13, 2026, Post Holdings, Inc. announced that Matthew J. Mainer will serve as Interim Chief Accounting Officer during the temporary medical leave of absence of Bradly A
What does Post Holdings do?
Post Holdings, Inc., headquartered in St. Louis, Missouri, is a consumer packaged goods holding company with businesses operating in the center-of-the-store, refrigerated, foodservice and food ingredient categories.
Where is Post Holdings based?
Post Holdings is based in St. Louis, Missouri, United States.
Which similar companies made leadership changes around the same time?
The Marzetti Company (October 9, 2026), John B. Sanfilippo & Son (October 2, 2026), General Mills (September 30, 2026) and Utz Brands (November 9, 2026) also announced leadership changes within 45 days of Post Holdings.

Source: Fundz verified event record.

Other recent leadership changes in Food and Beverage and Agriculture and Farming

Executive moves at companies in the same sectors within 45 days, from Fundz verified event records.

Who to call at Post Holdings, and when

A new leader at Post Holdings brings new priorities and often new vendors. The first weeks are when they listen.

  • An alert the day Post Holdings raises, hires an executive or expands, scored against what you sell
  • The decision-makers there, with verified emails
  • Who you already know at Post Holdings, from your own LinkedIn network

Works inside ChatGPT and Claude. Ask who to call at Post Holdings. With Fundz connected, it knows.

Watch Fundz in
See plan options
Trusted byOracleSnowflakeCloudflareLinkedInGoogleSalesforce 4.8/5 on G2

Company Information

Company

Post Holdings

Location

2503 S. Hanley Road

St. Louis, Missouri, United States

About

Post Holdings, Inc., headquartered in St. Louis, Missouri, is a consumer packaged goods holding company with businesses operating in the center-of-the-store, refrigerated, foodservice and food ingredient categories. Its businesses include Post Consumer Brands, Weetabix, Michael Foods and Bob Evans Farms. Post Consumer Brands is a leader in the North American ready-to-eat cereal category and also markets Peter Pan® peanut butters. Weetabix is home to the United Kingdom’s number one selling ready-to-eat cereal brand, Weetabix®. Michael Foods and Bob Evans Farms are leaders in refrigerated foods, delivering innovative, value-added egg and refrigerated potato side dish products to the foodservice and retail channels. Post participates in the private brand food category through its ownership interest with third parties in 8th Avenue Food & Provisions, Inc., a leading, private brand centric, consumer products holding company. For more information, visit www.postholdings.com.

AI made execution free. Knowing first is the whole game now.

Fundz sees it the moment Post Holdings changes its leadership, hires an exec or expands, usually minutes after it happens, and tells you who to reach.

Related People

Rob
Likely contact at this company
••••••••@••••••••

See Rob's verified email →

Create an account to reveal verified emails
Predictive Intelligence
Strategic

ML-powered predictions for Post Holdings's next move

Learn about Strategic plan

Post Holdings changed its leadership. Fundz had it the day it was filed, with the decision-maker at the company attached.

145 of these a day, filtered to the companies you pick, with the decision-maker attached.

5 screens from a live account. No signup.

Fundz is a real-time business intelligence platform powered by agentic AI that proactively delivers personalized daily signals, including funding rounds, executive changes, M&A activity, 13F institutional filings, SEC 8-K events, investor activity, and website modifications, based on each user's watchlist and ICP. A trusted data source at firms such as BlackRock, Oracle, Kleiner Perkins, LinkedIn, HubSpot, and Cloudflare, Fundz democratizes the institutional-grade intelligence that previously required a PitchBook or Bloomberg terminal. Features include Daily Briefing for AI-powered daily briefings, and unified cross-signal alerts across 281,000+ organizations. Developers and data teams can access these signals programmatically via the Fundz Funding Data API, with transparent published pricing.