FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * GRAY DIEDRE J   2. Issuer Name and Ticker or Trading Symbol Post Holdings, Inc. [POST] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP, GC & CAO, SECY (Last) (First) (Middle) C/O POST HOLDINGS, INC., 2503 S. HANLEY ROAD 3. Date of Earliest Transaction (Month/Day/Year) 11/13/2018 (Street) ST. LOUIS, MO 63144 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 11/13/2018   A   5,938 (1) A $ 0 13,606 D   Common Stock 11/13/2018   M   965 A $ 0 14,571 D   Common Stock 11/13/2018   F   292 (2) D $ 92.08 14,279 D   Common Stock 11/14/2018   F   656 (3) D $ 91.65 13,623 D   Common Stock               8,832 I By Trust

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Employee Stock Options (right to buy)

$ 92.08

11/13/2018

A

16,966

(4)

11/13/2028

Common Stock

16,966

$ 0

16,966

D

Restricted Stock Units

(5)

11/13/2018

M

965

(6)

11/13/2027

Common Stock

965

$ 0

1,931

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
GRAY DIEDRE J C/O POST HOLDINGS, INC. 2503 S. HANLEY ROAD ST. LOUIS, MO 63144			EVP, GC & CAO, SECY

Signatures

/s/ Diedre J. Gray		11/15/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Each restricted stock unit represents a contingent right to receive one share of Post Holdings, Inc. common stock. The restricted stock units were granted under the Post Holding, Inc. 2016 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3 and vest in equal annual installments over three years.
(2)	Surrender of shares in payment of tax withholding due as a result of the vesting of 965 RSUs in accordance with Rule 16b-3.
(3)	Surrender of shares in payment of tax withholding due as a result of the vesting of 2,167 RSUs in accordance with Rule 16b-3.
(4)	The option to purchase 16,966 shares of common stock was awarded under the Post Holdings, Inc. 2016 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3 and vest in equal annual installments over three years.
(5)	Each restricted stock unit represents a contingent right to receive one share of Post Holdings, Inc. common stock or a cash payment equal to the fair market value of one share of common stock at the Company's discretion upon vesting. The restricted stock units were awarded on November 13, 2017 under the Post Holdings, Inc. 2016 Long-Term Incentive Plan in a transaction exempt under Rule 16b-3 and vest in equal annual installments over three years.
(6)	One-third of the restricted stock units vest on each of the first, second, and third anniversaries of the date of grant without any action on the part of the participant.

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