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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 43h ago
HOUSE PTR3h ago
SEC 13F3h ago
ROBINHOOD CHAIN3h ago
SEC FORM 4/Open-market saleVerified data

Marantz Jing L. sold SRRK

CHIEF MEDICAL OFFICER · Scholar Rock Holding Corp · Common Stock

Side
SELL
Value
$258K
Shares
5,798
Price
$44.48
Executed
Jan 16, 2026
Disclosed
Jan 21, 2026
Disclosure timeline5 days from execution to publication · legal deadline 2 business days
Jan 16 executedJan 21, 2026 disclosed

SRRK · 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
52/ 100 · NOTABLE
Methodology →
  • Transaction type+12 / 20

    Open-market sale

  • Relative size+11 / 25

    $258K reported value · 5.7% of prior position

  • Filing timing+6 / 15

    Disclosed 3 business days after execution (deadline: 2)

  • Historical behavior+8 / 15

    First recorded trade by this actor in this security

  • Frequency & clustering+15 / 15

    3 other actors traded the same direction within 14 days

  • 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 · SRRK

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    27
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Open-market sale
    		SELL$372K
    7,989 sh
    		Feb 17, 2026Feb 19, 2026
    traded Feb 17, 2026
    		+2dSEC FORM 4

    Evidence

    26
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Open-market sale · 10b5-1 plan
    		SELL$599K
    12.8K sh
    		Jan 22, 2026Jan 23, 2026
    traded Jan 22, 2026
    		+1dSEC FORM 4

    Evidence

    19
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Open-market sale · 10b5-1 plan
    		SELL$97K
    2,119 sh
    		Jan 22, 2026Jan 23, 2026
    traded Jan 22, 2026
    		+1dSEC FORM 4

    Evidence

    48
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Open-market sale
    		SELL$374K
    8,406 sh
    		Jan 16, 2026Jan 21, 2026
    traded Jan 16, 2026
    		+5dSEC FORM 4

    Evidence

    48
    PC
    Parlavecchio CarynCHRO
    SRRKScholar Rock Holding Corp
    Open-market sale
    		SELL$294K
    6,600 sh
    		Jan 16, 2026Jan 21, 2026
    traded Jan 16, 2026
    		+5dSEC FORM 4

    Evidence

    48
    HJ
    Ho JunlinGENERAL COUNSEL
    SRRKScholar Rock Holding Corp
    Open-market sale
    		SELL$357K
    8,016 sh
    		Jan 16, 2026Jan 21, 2026
    traded Jan 16, 2026
    		+5dSEC FORM 4

    Evidence

    26
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Open-market sale · 10b5-1 plan
    		SELL$593K
    13.1K sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M—
    1,407 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    7
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M—
    321 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    3
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M—
    2,813 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M—
    2,678 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M—
    5,893 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M$25K
    1,407 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M$2,446
    321 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M$28K
    2,813 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    2
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M$93K
    5,893 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    0
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M$94K
    2,678 sh
    		Jan 14, 2026Jan 16, 2026
    traded Jan 14, 2026
    		+2dSEC FORM 4

    Evidence

    10
    PK
    Peng KatieDirector
    SRRKScholar Rock Holding Corp
    Open-market sale · 10b5-1 plan
    		SELL$32K
    726 sh
    		Dec 16, 2025Dec 18, 2025
    traded Dec 16, 2025
    		+2dSEC FORM 4

    Evidence

    10
    PK
    Peng KatieDirector
    SRRKScholar Rock Holding Corp
    Open-market sale · 10b5-1 plan
    		SELL$12K
    280 sh
    		Dec 16, 2025Dec 18, 2025
    traded Dec 16, 2025
    		+2dSEC FORM 4

    Evidence

    7
    QM
    Qatanani MoCHIEF SCIENTIFIC OFFICER
    SRRKScholar Rock Holding Corp
    Option exercise · 10b5-1 plan
    		M—
    8,035 sh
    		Dec 4, 2025Dec 5, 2025
    traded Dec 4, 2025
    		+1dSEC 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
    0001834528-26-000003
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Jan 16, 2026
    Published
    Jan 21, 2026
    Ingested by INSIDER
    Nov 5, 04:21 UTC
    Last re-read
    Nov 5, 04:21 UTC

    Extracted facts

    Filer
    Marantz Jing L.
    Role
    CHIEF MEDICAL OFFICER
    Transaction
    Open-market saleAs filed: “S”
    Asset
    Scholar Rock Holding Corp
    Ticker
    SRRK
    Shares
    5,798
    Price per share
    $44.48
    Value
    $257,882
    Execution date (reported)
    Jan 16, 2026
    Owned after transaction
    95.7K shares
    Days from execution to publication
    5

    Calculation

    Value = shares × reported price per share

    • Shares: 5,798
    • Price: $44.4777

    = $257,882

    What this establishes

    Marantz Jing L. filed this Form 4 reporting a open-market sale of SRRK on Jan 16, 2026. It became public on Jan 21, 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 MEDICAL OFFICER
    Marantz Jing L.cik:0001834528
    Issuer
    Scholar Rock Holding Corpcik:0001727196

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.