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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
TM

Tappin Matthew

President, Software ProductsCIK 0001986259

EDGAR filingsOpen in network
Disclosed transactions13
Buys / sells0 / 3
Max Insider Score51
Connections1with evidence

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
17
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Option exercise
M—
1,458 sh
Mar 7, 2026Mar 10, 2026
traded Mar 7, 2026
+3dSEC FORM 4

Evidence

Verified connections

  • Insider ofevidence
    STEM, INC.President, Software Products · Nov 12, 2025
17
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Option exercise
M
—
1,458 sh
Mar 7, 2026
Mar 10, 2026
traded Mar 7, 2026
+3d
SEC FORM 4

Evidence

31
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Open-market sale
SELL$7,284
655 sh
Mar 10, 2026Mar 10, 2026
traded Mar 10, 2026
+0dSEC FORM 4

Evidence

5
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Option exercise
M—
670 sh
Mar 1, 2026Mar 2, 2026
traded Mar 1, 2026
+1dSEC FORM 4

Evidence

13
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Option exercise
M—
670 sh
Mar 1, 2026Mar 2, 2026
traded Mar 1, 2026
+1dSEC FORM 4

Evidence

5
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Grant or award
A—
25.8K sh
Feb 26, 2026Mar 2, 2026
traded Feb 26, 2026
+4dSEC FORM 4

Evidence

5
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Grant or award
A—
17.2K sh
Feb 26, 2026Mar 2, 2026
traded Feb 26, 2026
+4dSEC FORM 4

Evidence

21
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Open-market sale
SELL$4,172
366 sh
Feb 20, 2026Feb 23, 2026
traded Feb 20, 2026
+3dSEC FORM 4

Evidence

13
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Tax withholding
F$5,899
522 sh
Feb 19, 2026Feb 19, 2026
traded Feb 19, 2026
+0dSEC FORM 4

Evidence

51
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Open-market sale
SELL$170K
9,584 sh
Nov 11, 2025Nov 24, 2025
traded Nov 11, 2025
+13dSEC FORM 4

Evidence

27
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Option exercise
M—
15.0K sh
Nov 7, 2025Nov 12, 2025
traded Nov 7, 2025
+5dSEC FORM 4

Evidence

24
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Tax withholding
F$99K
5,416 sh
Nov 10, 2025Nov 12, 2025
traded Nov 10, 2025
+2dSEC FORM 4

Evidence

15
TM
Tappin MatthewPresident, Software Products
STEMSTEM, INC.
Option exercise
M—
15.0K sh
Nov 7, 2025Nov 12, 2025
traded Nov 7, 2025
+5dSEC FORM 4

Evidence