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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 ChainProofTradingTokenProMethodologyMatch reviewLaunch readiness
01Overview02Daily Brief03Live04Congress05Corporate Insiders06Government Money07Political Influence08Institutions09Washington Network10Follow the Power11Disclosure Clock12AI Investigator13Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProMethodologyMatch reviewLaunch readiness
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 418m ago
HOUSE PTR17m ago
SEC 13F17m ago
ROBINHOOD CHAIN17m ago
SEC FORM 4/Tax withholdingVerified data

Niedzwiecki Daniel reported LNTH

See Remarks · Lantheus Holdings, Inc. · Common Stock

Side
F
Value
$630K
Shares
8,259
Price
$76.3
Executed
Mar 2, 2026
Disclosed
Mar 4, 2026
Disclosure timeline2 days from execution to publication · legal deadline 2 business days
Mar 2 executedMar 4, 2026 disclosed

LNTH · 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
19/ 100 · ROUTINE
Methodology →
  • Transaction type0 / 20

    Tax withholding — administrative, little informational value

  • Relative size+11 / 25

$630K reported value · 10.9% of prior position

  • Filing timing0 / 15

    Disclosed 2 business days 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 · LNTH

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    12
    MJ
    Marshall Robert J. Jr.CFO and Treasurer
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$73K
    721 sh
    		Aug 31, 2026Sep 2, 2026
    traded Aug 31, 2026
    		+2dSEC FORM 4

    Evidence

    19
    DL
    Dinkelborg LudgerSee Remarks
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$256K
    2,536 sh
    		Aug 17, 2026Aug 19, 2026
    traded Aug 17, 2026
    		+2dSEC FORM 4

    Evidence

    9
    BK
    Brown KimberlyChief Accounting Officer
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$47K
    463 sh
    		Aug 17, 2026Aug 19, 2026
    traded Aug 17, 2026
    		+2dSEC FORM 4

    Evidence

    22
    HA
    Heino Mary AnneDirector, Executive Chair and CEO
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$119K
    1,227 sh
    		May 14, 2026Jun 3, 2026
    traded May 14, 2026
    		+20dSEC FORM 4

    Evidence

    19
    BG
    Ber GerardDirector
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$37K
    381 sh
    		May 14, 2026Jun 3, 2026
    traded May 14, 2026
    		+20dSEC FORM 4

    Evidence

    17
    BM
    Baylor-Henry MinnieDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    13
    TH
    Thrall James HDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    21
    EM
    Eastland Julia MarieDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    13
    BG
    Ber GerardDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    13
    MJ
    McHugh JulieDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    21
    MK
    Morrow Phuong KhanhDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    13
    MC
    Maeusli Heinz ChristophDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    13
    LR
    Leno Sam RDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    21
    PJ
    Pruden Gary JDirector
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    4,137 sh
    		May 14, 2026May 18, 2026
    traded May 14, 2026
    		+4dSEC FORM 4

    Evidence

    12
    ND
    Niedzwiecki DanielSee Remarks
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$160K
    1,911 sh
    		Apr 17, 2026Apr 21, 2026
    traded Apr 17, 2026
    		+4dSEC FORM 4

    Evidence

    12
    MJ
    Marshall Robert J. Jr.CFO and Treasurer
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$90K
    1,182 sh
    		Mar 5, 2026Mar 9, 2026
    traded Mar 5, 2026
    		+4dSEC FORM 4

    Evidence

    21
    BK
    Brown KimberlyChief Accounting Officer
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    6,158 sh
    		Mar 5, 2026Mar 9, 2026
    traded Mar 5, 2026
    		+4dSEC FORM 4

    Evidence

    9
    BK
    Brown KimberlyChief Accounting Officer
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$10K
    133 sh
    		Mar 5, 2026Mar 9, 2026
    traded Mar 5, 2026
    		+4dSEC FORM 4

    Evidence

    9
    MM
    Morgan Amanda MichelleChief Commercial Officer
    LNTHLantheus Holdings, Inc.
    Tax withholding
    		F$45K
    595 sh
    		Mar 5, 2026Mar 9, 2026
    traded Mar 5, 2026
    		+4dSEC FORM 4

    Evidence

    21
    MM
    Morgan Amanda MichelleChief Commercial Officer
    LNTHLantheus Holdings, Inc.
    Grant or award
    		A—
    26.2K sh
    		Mar 5, 2026Mar 9, 2026
    traded Mar 5, 2026
    		+4dSEC 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
    0002064832-26-000113
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Mar 2, 2026
    Published
    Mar 4, 2026
    Ingested by INSIDER
    Nov 5, 04:13 UTC
    Last re-read
    Nov 5, 04:13 UTC

    Extracted facts

    Filer
    Niedzwiecki Daniel
    Role
    See Remarks
    Transaction
    Tax withholdingAs filed: “F”
    Asset
    Lantheus Holdings, Inc.
    Ticker
    LNTH
    Shares
    8,259
    Price per share
    $76.3
    Value
    $630,162
    Execution date (reported)
    Mar 2, 2026
    Owned after transaction
    84.0K shares
    Days from execution to publication
    2

    Calculation

    Value = shares × reported price per share

    • Shares: 8,259
    • Price: $76.3

    = $630,162

    What this establishes

    Niedzwiecki Daniel filed this Form 4 reporting a tax withholding of LNTH on Mar 2, 2026. It became public on Mar 4, 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
    See Remarks
    Niedzwiecki Danielcik:0001861113
    Issuer
    Lantheus Holdings, Inc.cik:0001521036

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.