Matthew J Mainer Post Holdings, Inc. (POST) insider trading activity

Matthew J Mainer is EVP, CFO & TREASURER of Post Holdings, Inc.. Currently has a direct ownership of 74,670 shares of POST, which is worth approximately $7.97 Million. The most recent transaction as insider was on Dec 04, 2025, when has been sold 600 shares (Common Stock) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 74.7K

99.48% 3M change

99.48% 12M change

Total Value Held $7.97 Million

MATTHEW J MAINER Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 04 2025	SELL Bona fide gift	-	600 Reduced 0.8%	74,670 Common Stock
Dec 01 2025	SELL Payment of exercise price or tax liability	$27,984 $104.03 p/Share	269 Reduced 0.36%	75,270 Common Stock
Nov 18 2025	BUY Grant, award, or other acquisition	-	25,461 Added 25.21%	75,539 Common Stock
Nov 15 2025	SELL Payment of exercise price or tax liability	$99,977 $106.7 p/Share	937 Reduced 1.84%	50,078 Common Stock
Nov 14 2025	SELL Payment of exercise price or tax liability	$132,818 $106.34 p/Share	1,249 Reduced 2.39%	51,015 Common Stock
Nov 12 2025	SELL Payment of exercise price or tax liability	$463,519 $106.02 p/Share	4,372 Reduced 7.72%	52,264 Common Stock
Nov 12 2025	BUY Exercise of conversion of derivative security	-	9,924 Added 15.53%	53,989 Common Stock

Oct 22 2025	SELL Payment of exercise price or tax liability	$783,344 $107.19 p/Share	7,308 Reduced 13.53%	46,712 Common Stock
Oct 22 2025	BUY Grant, award, or other acquisition	-	16,588 Added 23.49%	54,020 Common Stock
Dec 05 2024	SELL Bona fide gift	-	500 Reduced 1.32%	37,432 Common Stock
Dec 01 2024	SELL Payment of exercise price or tax liability	$322,284 $120.48 p/Share	2,675 Reduced 6.59%	37,932 Common Stock
Nov 20 2024	SELL Payment of exercise price or tax liability	$68,723 $110.31 p/Share	623 Reduced 1.51%	40,607 Common Stock
Nov 15 2024	SELL Payment of exercise price or tax liability	$101,313 $107.78 p/Share	940 Reduced 2.23%	41,230 Common Stock
Nov 14 2024	SELL Payment of exercise price or tax liability	$516,698 $109.47 p/Share	4,720 Reduced 10.07%	42,170 Common Stock
Oct 21 2024	SELL Payment of exercise price or tax liability	$321,781 $115.21 p/Share	2,793 Reduced 5.62%	46,890 Common Stock
Oct 21 2024	BUY Grant, award, or other acquisition	-	6,326 Added 11.29%	49,683 Common Stock
Dec 01 2023	SELL Payment of exercise price or tax liability	$295,848 $85.53 p/Share	3,459 Reduced 7.39%	43,357 Common Stock
Nov 20 2023	SELL Payment of exercise price or tax liability	$116,415 $86.17 p/Share	1,351 Reduced 2.8%	46,816 Common Stock
Nov 15 2023	SELL Payment of exercise price or tax liability	$80,541 $85.5 p/Share	942 Reduced 1.92%	48,167 Common Stock
Nov 14 2023	BUY Grant, award, or other acquisition	-	16,355 Added 24.98%	49,109 Common Stock
Aug 20 2023	SELL Payment of exercise price or tax liability	$14,975 $88.09 p/Share	170 Reduced 0.52%	32,754 Common Stock
Dec 01 2022	SELL Payment of exercise price or tax liability	$327,997 $94.09 p/Share	3,486 Reduced 9.57%	32,924 Common Stock

MJM

Matthew J Mainer

EVP, CFO & TREASURER

St. Louis, MO

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