INSIDER
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ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
01Overview02Follow the Money03Daily Brief04Live05Congress06Directory07Corporate Insiders08Government Money09Political Influence10Institutions11Washington Network12Follow the Power13Disclosure Clock14AI Investigator15Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
Data sources
SEC FORM 42h ago
HOUSE PTR2h ago
SEC 13F2h ago
ROBINHOOD CHAIN2h ago
Corporate insider
MJ

Mainer Matthew J

EVP, CFO & TREASURERCIK 0001954094

EDGAR filingsOpen in network
Disclosed transactions14
Buys / sells0 / 0
Max Insider Score21
Connections1with evidence

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
17
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Grant or award
A—
18.0K sh
Oct 22, 2026Oct 26, 2026
traded Oct 22, 2026
+4dSEC FORM 4

Evidence

Verified connections

  • Insider ofevidence
    Post Holdings, Inc.EVP, CFO & TREASURER · Nov 14, 2025
19
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Tax withholding
F
$620K
7,940 sh
Oct 22, 2026
Oct 26, 2026
traded Oct 22, 2026
+4d
SEC FORM 4

Evidence

12
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Gift
G—
600 sh
Dec 4, 2025Dec 5, 2025
traded Dec 4, 2025
+1dSEC FORM 4

Evidence

9
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Tax withholding
F$28K
269 sh
Dec 1, 2025Dec 2, 2025
traded Dec 1, 2025
+1dSEC FORM 4

Evidence

13
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Grant or award
A—
8,123 sh
Nov 18, 2025Nov 20, 2025
traded Nov 18, 2025
+2dSEC FORM 4

Evidence

17
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Grant or award
A—
17.3K sh
Nov 18, 2025Nov 20, 2025
traded Nov 18, 2025
+2dSEC FORM 4

Evidence

12
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Tax withholding
F$133K
1,249 sh
Nov 14, 2025Nov 18, 2025
traded Nov 14, 2025
+4dSEC FORM 4

Evidence

12
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Tax withholding
F$100K
937 sh
Nov 15, 2025Nov 18, 2025
traded Nov 15, 2025
+3dSEC FORM 4

Evidence

13
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Option exercise
M—
6,008 sh
Nov 12, 2025Nov 14, 2025
traded Nov 12, 2025
+2dSEC FORM 4

Evidence

21
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Option exercise
M—
3,916 sh
Nov 12, 2025Nov 14, 2025
traded Nov 12, 2025
+2dSEC FORM 4

Evidence

19
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Tax withholding
F$281K
2,647 sh
Nov 12, 2025Nov 14, 2025
traded Nov 12, 2025
+2dSEC FORM 4

Evidence

13
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Option exercise
M—
3,916 sh
Nov 12, 2025Nov 14, 2025
traded Nov 12, 2025
+2dSEC FORM 4

Evidence

12
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Tax withholding
F$183K
1,725 sh
Nov 12, 2025Nov 14, 2025
traded Nov 12, 2025
+2dSEC FORM 4

Evidence

9
MJ
Mainer Matthew JEVP, CFO & TREASURER
POSTPost Holdings, Inc.
Option exercise
M—
6,008 sh
Nov 12, 2025Nov 14, 2025
traded Nov 12, 2025
+2dSEC FORM 4

Evidence