INSIDER
01Overview02Follow the Money03Daily Brief04Live05Congress06Corporate Insiders07Government Money08Political Influence09Institutions10Washington Network11Follow the Power12Disclosure Clock13AI Investigator14Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodologyMatch reviewLaunch readiness
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 41h ago
HOUSE PTR1h ago
SEC 13F1h ago
ROBINHOOD CHAIN1h ago
SEC FORM 4/Option exerciseVerified data

Mcdonough Geoff reported GBIO

Director · Generation Bio Co. · Generation Bio Co. — Restricted Stock Units

Side
M
Value
—
Shares
659
Price
—
Executed
Oct 31, 2025
Disclosed
Nov 21, 2025
Disclosure timeline21 days from execution to publication · legal deadline 2 business days
Oct 31 executedNov 21, 2025 disclosed

GBIO · 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
31/ 100 · ELEVATED
Methodology →
  • Transaction type0 / 20

    Option exercise — administrative, little informational value

  • Relative size+13 / 25

No reported dollar value · 50.0% of prior position

  • Filing timing+10 / 15

    Disclosed 15 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 · GBIO

    ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
    13
    HY
    Howze YalondaINTERIM CEO & PRESIDENT
    GBIOGeneration Bio Co.
    Tax withholding
    		F$2,792
    495 sh
    		Feb 2, 2026Feb 4, 2026
    traded Feb 2, 2026
    		+2dSEC FORM 4

    Evidence

    9
    HY
    Howze YalondaINTERIM CEO & PRESIDENT
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    1,673 sh
    		Feb 2, 2026Feb 4, 2026
    traded Feb 2, 2026
    		+2dSEC FORM 4

    Evidence

    9
    CJ
    Conway Kevin JohnChief Financial Officer
    GBIOGeneration Bio Co.
    Tax withholding
    		F$406
    72 sh
    		Feb 2, 2026Feb 4, 2026
    traded Feb 2, 2026
    		+2dSEC FORM 4

    Evidence

    9
    CJ
    Conway Kevin JohnChief Financial Officer
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    235 sh
    		Feb 2, 2026Feb 4, 2026
    traded Feb 2, 2026
    		+2dSEC FORM 4

    Evidence

    21
    HY
    Howze YalondaINTERIM CEO & PRESIDENT
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    1,673 sh
    		Feb 2, 2026Feb 4, 2026
    traded Feb 2, 2026
    		+2dSEC FORM 4

    Evidence

    13
    CJ
    Conway Kevin JohnChief Financial Officer
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    235 sh
    		Feb 2, 2026Feb 4, 2026
    traded Feb 2, 2026
    		+2dSEC FORM 4

    Evidence

    9
    MG
    Mcdonough GeoffDirector
    GBIOGeneration Bio Co.
    Tax withholding
    		F$773
    137 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    17
    MG
    Mcdonough GeoffDirector
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    395 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    9
    CJ
    Conway Kevin JohnChief Financial Officer
    GBIOGeneration Bio Co.
    Tax withholding
    		F$95.88
    17 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    9
    CJ
    Conway Kevin JohnChief Financial Officer
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    59 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    13
    HY
    Howze YalondaCHIEF LEGAL OFFICER
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    335 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    9
    HY
    Howze YalondaCHIEF LEGAL OFFICER
    GBIOGeneration Bio Co.
    Tax withholding
    		F$558
    99 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    17
    HY
    Howze YalondaCHIEF LEGAL OFFICER
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    335 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    9
    MG
    Mcdonough GeoffDirector
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    395 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    17
    CJ
    Conway Kevin JohnChief Financial Officer
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    59 sh
    		Jan 15, 2026Jan 16, 2026
    traded Jan 15, 2026
    		+1dSEC FORM 4

    Evidence

    19
    MG
    Mcdonough GeoffDirector
    GBIOGeneration Bio Co.
    Tax withholding
    		F$1,614
    293 sh
    		Oct 31, 2025Nov 21, 2025
    traded Oct 31, 2025
    		+21dSEC FORM 4

    Evidence

    19
    MG
    Mcdonough GeoffDirector
    GBIOGeneration Bio Co.
    Option exercise
    		M—
    659 sh
    		Oct 31, 2025Nov 21, 2025
    traded Oct 31, 2025
    		+21dSEC 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
    0001732701-25-000007
    Machine-readable
    Structured copy

    Timestamps

    Event (reported)
    Oct 31, 2025
    Published
    Nov 21, 2025
    Ingested by INSIDER
    Nov 5, 04:31 UTC
    Last re-read
    Nov 5, 04:31 UTC

    Extracted facts

    Filer
    Mcdonough Geoff
    Role
    Director
    Transaction
    Option exerciseAs filed: “M”
    Asset
    Generation Bio Co. — Restricted Stock Units
    Ticker
    GBIO
    Shares
    659
    Price per share
    $0
    Execution date (reported)
    Oct 31, 2025
    Owned after transaction
    1,977 shares
    Days from execution to publication
    21

    What this establishes

    Mcdonough Geoff filed this Form 4 reporting a option exercise of GBIO on Oct 31, 2025. It became public on Nov 21, 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
    Mcdonough Geoffcik:0001732701
    Issuer
    Generation Bio Co.cik:0001733294

    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 GBIO 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.