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Data sources

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

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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 41h ago
HOUSE PTR1h ago
SEC 13F1h ago
ROBINHOOD CHAIN1h ago
SEC FORM 4/Open-market purchaseVerified data

Donoso Diego bought ATMU

Director · Atmus Filtration Technologies Inc. · Common Stock

Side
BUY
Value
$1,125
Shares
25
Price
$45
Executed
Aug 13, 2025
Disclosed
Nov 19, 2025
Disclosure timeline98 days from execution to publication · legal deadline 2 business days
Aug 13 executedNov 19, 2025 disclosed

ATMU · 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
51/ 100 · NOTABLE
Methodology →
  • Transaction type+20 / 20

    Open-market purchase

  • Relative size+1 / 25

    $1K reported value · 0.3% of prior position

  • Filing timing+15 / 15

    Disclosed 70 business days after execution (deadline: 2)

  • Historical behavior+15 / 15

    Reverses direction: 1 prior trade the other way

  • 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 · ATMU

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    24
    SR
    Swan ReneeChief People Officer
    ATMUAtmus Filtration Technologies Inc.
    Open-market sale
    		SELL$197K
    3,870 sh
    		Aug 17, 2026Aug 18, 2026
    traded Aug 17, 2026
    		+1dSEC FORM 4

    Evidence

    43
    MC
    Masters CharlesSenior Vice President
    ATMUAtmus Filtration Technologies Inc.
    Open-market sale
    		SELL$131K
    2,890 sh
    		Jun 1, 2026Jun 2, 2026
    traded Jun 1, 2026
    		+1dSEC FORM 4

    Evidence

    49
    DS
    Disher StephanieDirector, Chief Executive Officer
    ATMUAtmus Filtration Technologies Inc.
    Open-market sale
    		SELL$1.16M
    25.7K sh
    		Jun 1, 2026Jun 2, 2026
    traded Jun 1, 2026
    		+1dSEC FORM 4

    Evidence

    43
    KJ
    Kienzler JackChief Financial Officer
    ATMUAtmus Filtration Technologies Inc.
    Open-market sale
    		SELL$232K
    5,132 sh
    		Jun 1, 2026Jun 2, 2026
    traded Jun 1, 2026
    		+1dSEC FORM 4

    Evidence

    39
    SR
    Swan ReneeChief People Officer
    ATMUAtmus Filtration Technologies Inc.
    Open-market sale
    		SELL$116K
    2,566 sh
    		Jun 1, 2026Jun 2, 2026
    traded Jun 1, 2026
    		+1dSEC FORM 4

    Evidence

    9
    CN
    Carpenter Kevin NSVP-Chief Supply Chain Officer
    ATMUAtmus Filtration Technologies Inc.
    Grant or award
    		A—
    28.5K sh
    		May 12, 2026May 13, 2026
    traded May 12, 2026
    		+1dSEC FORM 4

    Evidence

    21
    SH
    Sharp HeathDirector
    ATMUAtmus Filtration Technologies Inc.
    Grant or award
    		A—
    2,619 sh
    		May 12, 2026May 13, 2026
    traded May 12, 2026
    		+1dSEC FORM 4

    Evidence

    13
    BE
    Bennett Roy EdwinDirector
    ATMUAtmus Filtration Technologies Inc.
    Grant or award
    		A—
    2,619 sh
    		May 12, 2026May 13, 2026
    traded May 12, 2026
    		+1dSEC FORM 4

    Evidence

    17
    SR
    Swan ReneeChief People Officer
    ATMUAtmus Filtration Technologies Inc.
    Grant or award
    		A—
    18.5K sh
    		Feb 13, 2026Feb 17, 2026
    traded Feb 13, 2026
    		+4dSEC FORM 4

    Evidence

    21
    MC
    Masters CharlesSenior Vice President
    ATMUAtmus Filtration Technologies Inc.
    Grant or award
    		A—
    21.2K sh
    		Feb 13, 2026Feb 17, 2026
    traded Feb 13, 2026
    		+4dSEC FORM 4

    Evidence

    21
    DS
    Disher StephanieDirector, Chief Executive Officer
    ATMUAtmus Filtration Technologies Inc.
    Grant or award
    		A—
    169.2K sh
    		Feb 13, 2026Feb 17, 2026
    traded Feb 13, 2026
    		+4dSEC FORM 4

    Evidence

    21
    KJ
    Kienzler JackChief Financial Officer
    ATMUAtmus Filtration Technologies Inc.
    Grant or award
    		A—
    41.1K sh
    		Feb 13, 2026Feb 17, 2026
    traded Feb 13, 2026
    		+4dSEC FORM 4

    Evidence

    17
    SH
    Sharp HeathDirector
    ATMUAtmus Filtration Technologies Inc.
    Grant or award
    		A—
    614 sh
    		Feb 5, 2026Feb 9, 2026
    traded Feb 5, 2026
    		+4dSEC FORM 4

    Evidence

    23
    DD
    Donoso DiegoDirector
    ATMUAtmus Filtration Technologies Inc.
    Open-market sale
    		SELL$977
    20 sh
    		Nov 13, 2025Nov 19, 2025
    traded Nov 13, 2025
    		+6dSEC FORM 4

    Evidence

    36
    DD
    Donoso DiegoDirector
    ATMUAtmus Filtration Technologies Inc.
    Open-market sale
    		SELL$1,512
    40 sh
    		Apr 2, 2025Nov 19, 2025
    traded Apr 2, 2025
    		+231dSEC FORM 4

    Evidence

    8
    DD
    Donoso DiegoDirector
    ATMUAtmus Filtration Technologies Inc.
    Other acquisition or disposition
    		J—
    20 sh
    		Nov 18, 2025Nov 19, 2025
    traded Nov 18, 2025
    		+1dSEC FORM 4

    Evidence

    40
    DD
    Donoso DiegoDirector
    ATMUAtmus Filtration Technologies Inc.
    Open-market purchase
    		BUY$687
    15 sh
    		Sep 5, 2025Nov 19, 2025
    traded Sep 5, 2025
    		+75dSEC 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
    0001809708-25-000004
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Aug 13, 2025
    Published
    Nov 19, 2025
    Ingested by INSIDER
    Nov 5, 04:32 UTC
    Last re-read
    Nov 5, 04:32 UTC

    Extracted facts

    Filer
    Donoso Diego
    Role
    Director
    Transaction
    Open-market purchaseAs filed: “P”
    Asset
    Atmus Filtration Technologies Inc.
    Ticker
    ATMU
    Shares
    25
    Price per share
    $45
    Value
    $1,125
    Execution date (reported)
    Aug 13, 2025
    Owned after transaction
    9,063 shares
    Days from execution to publication
    98

    Calculation

    Value = shares × reported price per share

    • Shares: 25
    • Price: $45

    = $1,125

    What this establishes

    Donoso Diego filed this Form 4 reporting a open-market purchase of ATMU on Aug 13, 2025. It became public on Nov 19, 2025. 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
    Director
    Donoso Diegocik:0001809708
    Issuer
    Atmus Filtration Technologies Inc.cik:0001921963

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.