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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 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/Derivative conversionVerified data

Alexandria Venture Investments, LLC reported TRXB

10% Owner · TRex Bio, Inc. · TRex Bio, Inc. — Series B Preferred Stock

Side
C
Value
—
Shares
3.48M
Price
—
Executed
Oct 13, 2026
Disclosed
Oct 15, 2026
Disclosure timeline2 days from execution to publication · legal deadline 2 business days
Oct 13 executedOct 15, 2026 disclosed

TRXB · 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
9/ 100 · ROUTINE
Methodology →
  • Transaction type0 / 20

    Derivative conversion — administrative, little informational value

  • Relative size+1 / 25

No reported dollar value · new 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 · TRXB

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    47
    AI
    Alexandria Venture Investments, LLC10% Owner
    TRXBTRex Bio, Inc.
    Open-market purchase
    		BUY$2.50M
    178.6K sh
    		Oct 13, 2026Oct 15, 2026
    traded Oct 13, 2026
    		+2dSEC FORM 4

    Evidence

    9
    AI
    Alexandria Venture Investments, LLC10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    1.17M sh
    		Oct 13, 2026Oct 15, 2026
    traded Oct 13, 2026
    		+2dSEC FORM 4

    Evidence

    9
    AI
    Alexandria Venture Investments, LLC10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    1.03M sh
    		Oct 13, 2026Oct 15, 2026
    traded Oct 13, 2026
    		+2dSEC FORM 4

    Evidence

    17
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    53.9K sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    61
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Open-market purchase
    		BUY$1.26M
    89.8K sh
    		Oct 8, 2026Oct 13, 2026
    traded Oct 8, 2026
    		+5dSEC FORM 4

    Evidence

    17
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    1.57M sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    13
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    475.4K sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    52
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Open-market purchase
    		BUY$43K
    3,074 sh
    		Oct 8, 2026Oct 13, 2026
    traded Oct 8, 2026
    		+5dSEC FORM 4

    Evidence

    13
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    16.3K sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    5
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    669.9K sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    5
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    1.57M sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    5
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    475.4K sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    5
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    53.9K sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    5
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    16.3K sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC FORM 4

    Evidence

    5
    SV
    Svlsf Vi, Llc10% Owner
    TRXBTRex Bio, Inc.
    Derivative conversion
    		C—
    669.9K sh
    		Oct 13, 2026Oct 13, 2026
    traded Oct 13, 2026
    		+0dSEC 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
    0001722024-26-000004
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Oct 13, 2026
    Published
    Oct 15, 2026
    Ingested by INSIDER
    Nov 5, 02:11 UTC
    Last re-read
    Nov 5, 02:11 UTC

    Extracted facts

    Filer
    Alexandria Venture Investments, LLC
    Role
    10% Owner
    Transaction
    Derivative conversionAs filed: “C”
    Asset
    TRex Bio, Inc. — Series B Preferred Stock
    Ticker
    TRXB
    Shares
    3.48M
    Price per share
    $0
    Execution date (reported)
    Oct 13, 2026
    Owned after transaction
    0 shares
    Days from execution to publication
    2

    What this establishes

    Alexandria Venture Investments, LLC filed this Form 4 reporting a derivative conversion of TRXB on Oct 13, 2026. It became public on Oct 15, 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
    10% Owner
    Alexandria Venture Investments, LLCcik:0001722024
    Issuer
    TRex Bio, Inc.cik:0002139097

    Revision history · 0

    No field has changed since this record was first ingested.

    Company events

    No records

    No material filings recorded for this issuer.