INSIDER
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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 BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
OverviewFollow the MoneyDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 41h ago
HOUSE PTR1h ago
SEC 13F1h ago
ROBINHOOD CHAIN1h ago
Corporate insider
DM

Durham Mark

Chief Accounting OfficerCIK 0002073180

EDGAR filingsOpen in network
Disclosed transactions5
Buys / sells0 / 0
Max Insider Score21
Connections1with evidence

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
17
DM
Durham MarkChief Accounting Officer
GTLSCHART INDUSTRIES INC
Grant or award
A—
689 sh
Apr 1, 2026Apr 2, 2026
traded Apr 1, 2026
+1dSEC FORM 4

Evidence

Verified connections

  • Insider ofevidence
    CHART INDUSTRIES INCChief Accounting Officer · Nov 13, 2025
16
DM
Durham MarkChief Accounting Officer
GTLSCHART INDUSTRIES INC
Tax withholding
F
$71K
345 sh
Apr 1, 2026
Apr 2, 2026
traded Apr 1, 2026
+1d
SEC FORM 4

Evidence

21
DM
Durham MarkChief Accounting Officer
GTLSCHART INDUSTRIES INC
Grant or award
A—
1,050 sh
Jan 2, 2026Jan 6, 2026
traded Jan 2, 2026
+4dSEC FORM 4

Evidence

9
DM
Durham MarkChief Accounting Officer
GTLSCHART INDUSTRIES INC
Tax withholding
F$14K
66 sh
Jan 2, 2026Jan 6, 2026
traded Jan 2, 2026
+4dSEC FORM 4

Evidence

19
DM
Durham MarkChief Accounting Officer
GTLSCHART INDUSTRIES INC
Tax withholding
F$24K
117 sh
Nov 10, 2025Nov 13, 2025
traded Nov 10, 2025
+3dSEC FORM 4

Evidence