Welcome to our dedicated page for Post Holdings SEC filings (Ticker: POST), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Post Holdings, Inc. filings document operating results, material events, governance actions and capital-structure changes for a consumer packaged goods holding company. Form 8-K reports include quarterly results releases, Regulation FD disclosures, officer and director changes, board appointments, and amendments to the company’s articles of incorporation that lowered certain supermajority voting thresholds after shareholder approval.
The filing record also details senior unsecured note issuances, including notes due 2034 and 2036, related indentures, subsidiary guarantees, interest terms, maturity dates and the ranking of the obligations. Shareholder meeting and proxy-related disclosures cover voting matters, governance provisions, director compensation arrangements and security-holder rights.
Post Holdings (POST) reported an insider transaction on a Form 4 for EVP, GC & CAO, Secretary Diedre J. Gray. She acquired 46,852 common shares at $0 upon payout of earned PRSUs under Rule 16b-3, with the award tied to relative total shareholder return for the period from October 1, 2022 through September 30, 2025. She then surrendered 20,639 shares at $107.19 to cover tax withholding associated with the vesting. After these transactions, holdings are 45,538 shares direct, plus 123,929 by trust and 45,839 by spouse's trust.
Post Holdings (POST) insider activity: On 10/22/2025, the company’s Pres & CEO, PCB reported acquiring 40,723 shares at $0 pursuant to a payout of earned performance share awards under Rule 16b-3. In a related move, 18,570 shares were surrendered to cover tax withholding at $107.19. Following these transactions, the executive directly holds 59,590 shares.
The PRSU payout was based on relative total shareholder return performance for the period from October 1, 2022 through September 30, 2025. The filing was made as a single-reporting-person Form 4.
Post Holdings, Inc. reported a governance update. On October 16, 2025, the Board amended and restated the company’s bylaws to permit shareholders holding at least 25% of the outstanding voting shares to call a special meeting of shareholders. The ninth Amended and Restated Bylaws took effect the same day. The full bylaws and a marked version showing changes were filed as Exhibits 3.1 and 3.2.
William P. Stiritz filed Amendment No. 3 to Schedule 13D reporting his beneficial ownership in Post Holdings, Inc. (POST). He reports aggregate beneficial ownership of 4,882,968 shares of common stock, representing approximately 9.28% of outstanding shares.
The filing details sole voting and dispositive power over 4,498,836 shares and shared voting and dispositive power over 384,132 shares with his spouse, Susan Stiritz. Holdings include 4,329,467 shares held directly, 169,369 shares through The Wildwood Trust, and 384,132 shares via his spouse.
The amendment notes an open‑market purchase of 36,000 shares at $109.53 per share on August 19, 2025. Post Holdings had 52,604,677 shares outstanding as of October 15, 2025.
Dimensional Fund Advisors LP reports beneficial ownership of 2,812,423 shares of Post Holdings Inc common stock, representing 5.2% of the class. Dimensional states these shares are held for various funds it advises and disclaims direct beneficial ownership; the filing shows sole voting power over 2,737,432 shares and sole dispositive power over 2,812,423 shares. The statement affirms the holdings are held in the ordinary course of business and not for the purpose of changing control of the issuer. The schedule identifies Dimensional as an investment adviser and clarifies that the reported securities are owned by client Funds for which Dimensional provides investment management or advisory services.
Jennifer Kuperman Johnson, a Director of Post Holdings, Inc. (POST), reported deferred compensation credited as 103.376 stock equivalents on 09/30/2025. Those stock equivalents have no exercisable or expiration dates and are tracked under the company’s Deferred Compensation Plan for Non-Management Directors. The filing shows 6,100.362 shares of common stock beneficially owned by the reporting person following the reported transaction. The filing was signed on behalf of the reporting person by an attorney-in-fact on 10/02/2025.
David W. Kemper, a Director of Post Holdings, Inc. (POST), reported a deferred-compensation credit of 160.233 stock equivalents on 09/30/2025. The filing states these equivalents are part of the company’s Deferred Compensation Plan for Non-Management Directors and are credited shortly after the month in which the retainer is earned. The equivalents carry no exercise or expiration dates and are payable in cash on a one-for-one basis upon the director’s separation from the board. The report shows a per-share valuation of $107.48 for the underlying common stock and the reporting person’s total direct beneficial ownership after the transaction is 19,374.568 shares. The Form 4 was signed by an attorney-in-fact on 10/02/2025.
Director Thomas C. Erb reported on 09/30/2025 the acquisition of 103.376 Post Holdings, Inc. stock equivalents under the companys Deferred Compensation Plan for Non-Management Directors. The filing shows these equivalents were credited as compensation for his director retainer and carry no fixed exercise or expiration dates; they are distributable in cash on a one-for-one basis upon separation from the board. Following the reported transaction, Mr. Erb is recorded as beneficially owning 6,100.362 shares of Post Holdings common stock. The Form 4 was signed by an attorney-in-fact on 10/02/2025.
Dorothy M. Burwell, a director of Post Holdings, Inc. (POST), reported a deferred-compensation transaction dated 09/30/2025. She was credited with 103.376 Post Holdings stock equivalents under the company's Deferred Compensation Plan for Non-Management Directors, recorded at a per-unit value of $107.48. The filing shows 7,612.233 shares beneficially owned by Ms. Burwell following the transaction. The stock equivalents have no fixed exercise or expiration dates and are paid in cash on a one-for-one basis upon separation from the board.
Post Holdings insider transaction summary: Nicolas Catoggio, identified as President & CEO (PCB), reported a transaction dated 09/13/2025 related to the vesting of restricted stock units. In connection with the vesting of 13,846 restricted stock units, 6,314 shares of Post Holdings common stock were surrendered to satisfy tax withholding obligations at a price of $104.98 per share. After the transaction, the reporting person beneficially owned 37,437 shares, held directly.
The Form 4 indicates the disposition was a withholding surrender tied to compensation vesting rather than an open-market sale.