INSIDER
01Overview02Daily Brief03Live04Congress05Corporate Insiders06Government Money07Political Influence08Institutions09Washington Network10Follow the Power11Disclosure Clock12AI Investigator13Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
Data sources

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

RH CHAIN…
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
01Overview02Daily Brief03Live04Congress05Corporate Insiders06Government Money07Political Influence08Institutions09Washington Network10Follow the Power11Disclosure Clock12AI Investigator13Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 43h ago
HOUSE PTR3h ago
SEC 13F3h ago
ROBINHOOD CHAIN3h ago
SEC FORM 4/Tax withholdingVerified data

Durham Mark reported GTLS

Chief Accounting Officer · CHART INDUSTRIES INC · Common stock, par value $0.01 per share

Side
F
Value
$71K
Shares
345
Price
$206.94
Executed
Apr 1, 2026
Disclosed
Apr 2, 2026
Disclosure timeline1 days from execution to publication · legal deadline 2 business days
Apr 1 executedApr 2, 2026 disclosed

GTLS · daily

Yahoo Finance chart API
▲Execution▼Disclosure●Material company filing●Other disclosed buy●Other disclosed sellUnofficial public endpoint; daily OHLCV, split-adjusted. Replace with a licensed feed for production.

Insider Score

Experimental signal
16/ 100 · ROUTINE
Methodology →
  • Transaction type0 / 20

    Tax withholding — administrative, little informational value

  • Relative size+8 / 25

$71K reported value · 12.2% of prior position

  • Filing timing0 / 15

    Disclosed 1 business day after execution (deadline: 2)

  • Historical behavior+8 / 15

    First recorded trade by this actor in this security

  • Frequency & clustering0 / 15

    No clustered activity in the dataset

  • Market events0 / 10

    No material company filing within 60 days after the trade

    • The Insider Score measures how far a disclosure deviates from normal filing patterns. A high score is a prompt for research, not evidence of illegal insider trading.

    Other disclosed activity · GTLS

    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

    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

    Evidence

    Verified data

    Read directly from the primary public document; every field below is as reported by the filer.

    Source

    Document
    SEC Form 4
    Publisher
    U.S. Securities and Exchange Commission (EDGAR)
    Document ID
    0002073180-26-000004
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Apr 1, 2026
    Published
    Apr 2, 2026
    Ingested by INSIDER
    Nov 5, 04:08 UTC
    Last re-read
    Nov 5, 04:08 UTC

    Extracted facts

    Filer
    Durham Mark
    Role
    Chief Accounting Officer
    Transaction
    Tax withholdingAs filed: “F”
    Asset
    CHART INDUSTRIES INC
    Ticker
    GTLS
    Shares
    345
    Price per share
    $206.94
    Value
    $71,394
    Execution date (reported)
    Apr 1, 2026
    Owned after transaction
    3,181 shares
    Days from execution to publication
    1

    Calculation

    Value = shares × reported price per share

    • Shares: 345
    • Price: $206.94

    = $71,394

    What this establishes

    Durham Mark filed this Form 4 reporting a tax withholding of GTLS on Apr 1, 2026. It became public on Apr 2, 2026. The filing establishes the reported transaction and the filer's stated role. It does not establish why the trade was made or what the filer knew.

    Extraction

    Method
    Form 4 XML
    Confidence
    1.00
    Chief Accounting Officer
    Durham Markcik:0002073180
    Issuer
    CHART INDUSTRIES INCcik:0000892553

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.

    Source error

    Price history for GTLS is unavailable.

    An error occurred in the Server Components render. The specific message is omitted in production builds to avoid leaking sensitive details. A digest property is included on this error instance which may provide additional details about the nature of the error.