Post director plans $32.8M stock sale in 2026

Post Holdings, Inc. (POST) received a notice that director P. Stiritz, through Fidelity Brokerage Services LLC and acting "out of the SUSAN E STIRITZ REVOCABLE TRST," plans to sell 384,132 shares of Post common stock under Rule 144.

Rhea-AI Filing Summary

Post Holdings, Inc. (POST) received a notice that director P. Stiritz, through Fidelity Brokerage Services LLC and acting "out of the SUSAN E STIRITZ REVOCABLE TRST," plans to sell 384,132 shares of Post common stock under Rule 144. The planned sale has an aggregate market value of $32,785,666.00, with Post common shares outstanding stated as 43,956,805 and the contemplated sale date of 08/31/2026 on the NYSE.

Key Figures

Shares to be sold: 384,132 shares Aggregate market value: $32,785,666.00 Shares outstanding: 43,956,805 shares +3 more

6 metrics

Shares to be sold 384,132 shares Number of Post common shares covered by the Rule 144 notice

Aggregate market value $32,785,666.00 Aggregate market value of shares to be sold under the notice

Shares outstanding 43,956,805 shares Post common shares outstanding referenced in the notice

Planned sale date 08/31/2026 Date listed for sales on the NYSE

Trust-related sale lot 166 shares One acquisition lot via merger dated 05/08/1997 among securities to be sold

Open market lot 100,000 shares One open market acquisition lot dated 11/21/2016 among securities to be sold

Key Terms

Rule 144, aggregate market value, Open Market, revocable trust

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

aggregate market value financial

"Common | Fidelity Brokerage Services LLC ... | 384132 | 32785666.00 |"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Open Market market

"Common | 02/09/2016 | Open Market | Open Market |"

An open market is a system where buying and selling of goods, services, or financial assets happen freely without restrictions or special controls. For investors, it means they can trade assets easily and quickly, which helps determine fair prices based on supply and demand. This environment encourages transparency and competition, making it easier to buy or sell with confidence.

revocable trust financial

"Remarks | Selling out of the SUSAN E STIRITZ REVOCABLE TRST"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing disclose for POST?

It discloses that director P. Stiritz, via Fidelity Brokerage Services LLC and a revocable trust, intends to sell 384,132 shares of Post Holdings, Inc. common stock under Rule 144, with an aggregate market value of $32,785,666.00, on or about 08/31/2026.

How many Post (POST) shares are planned to be sold under this Form 144?

The notice states an intention to sell 384,132 shares of Post Holdings, Inc. common stock through Fidelity Brokerage Services LLC, with sales contemplated on the NYSE.

What is the aggregate market value of the POST shares in this Form 144?

The planned sale of Post Holdings, Inc. common stock has an aggregate market value of $32,785,666.00 as reported in the Form 144 notice.

What is the stated number of Post (POST) shares outstanding in the Form 144?

The Form 144 notice lists 43,956,805 Post Holdings, Inc. common shares as outstanding in connection with the planned Rule 144 sale.

Who is selling the POST shares and through what account?

The seller is identified as STIRITZ P, a director of Post Holdings, Inc. The remarks state the transaction is "Selling out of the SUSAN E STIRITZ REVOCABLE TRST," with Fidelity Brokerage Services LLC acting as broker.

When is the planned sale date for the POST shares in this Form 144?

The intended sale date for the Post Holdings, Inc. common shares is listed as 08/31/2026, with sales to occur on the NYSE, subject to Rule 144 conditions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/31/2026 - 04:33 PM EDT Accepted by SEC EDGAR 08/31/2026 - 04:32 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001052058
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Post Holdings, Inc.
SEC File Number	001-35305
Address of Issuer	2503 S. HANLEY ROAD ST. LOUIS MISSOURI 63144
Phone	314-644-7600
Name of Person for Whose Account the Securities are To Be Sold	STIRITZ WILLIAM P
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 245 Summer Street Boston MA 02110	384132	32785666.00	43956805	08/31/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/08/1997	Merger	Issuer			166	05/08/1997	N/A
Common	02/09/2016	Open Market	Open Market			70000	02/09/2016	Cash/ check
Common	11/21/2016	Open Market	Open Market			100000	11/21/2016	Cash/ check
Common	02/08/2016	Open Market	Open Market			79907	02/08/2016	Cash/ check
Common	02/06/2019	Open Market	Open Market			134059	02/06/2019	Cash/ check

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks	Selling out of the SUSAN E STIRITZ REVOCABLE TRST
Date of Notice	08/31/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Cristina Garcia, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for STIRITZ WILLIAM P
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)