GBIO Insider Trading

GBIO · full profile →Last filing Feb 9, 2026
Mixed · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$0
0 insiders
Net Insider Flow
$0
open market, 180d
Reporting Insiders
0
0 P/S transactions
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Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Feb 9, 2026Rhodes Jason PDirectorDisposed to issuer(D)3K
Feb 9, 2026Rhodes Jason PDirectorDisposed to issuer(D)6K
Feb 9, 2026Appelhans DannielleDirectorTender(U)1K
Feb 9, 2026Appelhans DannielleDirectorTender(U)736
Feb 9, 2026Appelhans DannielleDirectorDisposed to issuer(D)6K
Feb 9, 2026Appelhans DannielleDirectorDisposed to issuer(D)4K
Feb 9, 2026Appelhans DannielleDirectorDisposed to issuer(D)3K
Feb 9, 2026Appelhans DannielleDirectorDisposed to issuer(D)3K
Feb 9, 2026Christensen GustavDirectorTender(U)13K
Feb 9, 2026Christensen GustavDirectorDisposed to issuer(D)3K
Feb 9, 2026Christensen GustavDirectorDisposed to issuer(D)5K
Feb 9, 2026Christensen GustavDirectorDisposed to issuer(D)6K
Feb 9, 2026Christensen GustavDirectorDisposed to issuer(D)2K
Feb 9, 2026Christensen GustavDirectorDisposed to issuer(D)3K
Feb 9, 2026Christensen GustavDirectorDisposed to issuer(D)2K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERTender(U)2K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)3K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)3K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)6K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)200
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)249
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)36K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)2K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)550
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)2K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)621
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)1K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)283
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)1K
Feb 9, 2026Conway Kevin JohnCHIEF FINANCIAL OFFICERDisposed to issuer(D)1K
Feb 9, 2026Cooper Ronald Harold WilfredDirectorTender(U)950
Feb 9, 2026Cooper Ronald Harold WilfredDirectorDisposed to issuer(D)2K
Feb 9, 2026Cooper Ronald Harold WilfredDirectorDisposed to issuer(D)3K
Feb 9, 2026Cooper Ronald Harold WilfredDirectorDisposed to issuer(D)3K
Feb 9, 2026Cooper Ronald Harold WilfredDirectorDisposed to issuer(D)6K
Feb 9, 2026Cooper Ronald Harold WilfredDirectorDisposed to issuer(D)3K
Feb 9, 2026Howze YalondaINTERIM CEO AND PRESIDENTTender(U)4K
Feb 9, 2026Howze YalondaINTERIM CEO AND PRESIDENTDisposed to issuer(D)8K
Feb 9, 2026Howze YalondaINTERIM CEO AND PRESIDENTDisposed to issuer(D)25K
Feb 9, 2026Howze YalondaINTERIM CEO AND PRESIDENTDisposed to issuer(D)11K
Feb 9, 2026Howze YalondaINTERIM CEO AND PRESIDENTDisposed to issuer(D)12K
Feb 9, 2026Jonas Jeffrey MDirectorDisposed to issuer(D)2K
Feb 9, 2026Jonas Jeffrey MDirectorDisposed to issuer(D)6K
Feb 9, 2026Jonas Jeffrey MDirectorDisposed to issuer(D)3K
Feb 9, 2026Jonas Jeffrey MDirectorDisposed to issuer(D)3K
Feb 9, 2026Jonas Jeffrey MDirectorDisposed to issuer(D)4K
Feb 9, 2026Jonas Jeffrey MDirectorDisposed to issuer(D)5K
Feb 9, 2026Jonas Jeffrey MDirectorDisposed to issuer(D)2K
Feb 9, 2026McDonough GeoffDirectorTender(U)138K
Feb 9, 2026McDonough GeoffDirectorTender(U)28K
Feb 9, 2026McDonough GeoffDirectorTender(U)23K
Feb 9, 2026McDonough GeoffDirectorDisposed to issuer(D)20K
Feb 9, 2026McDonough GeoffDirectorDisposed to issuer(D)25K
Feb 9, 2026McDonough GeoffDirectorDisposed to issuer(D)37K
Feb 9, 2026McDonough GeoffDirectorDisposed to issuer(D)24K
Feb 9, 2026McDonough GeoffDirectorDisposed to issuer(D)90K
Feb 9, 2026McDonough GeoffDirectorDisposed to issuer(D)17K
Feb 9, 2026McDonough GeoffDirectorDisposed to issuer(D)51K
Feb 9, 2026Nicholson Donald WilliamDirectorTender(U)21K
Feb 9, 2026Nicholson Donald WilliamDirectorDisposed to issuer(D)3K
Feb 9, 2026Nicholson Donald WilliamDirectorDisposed to issuer(D)5K
Feb 9, 2026Nicholson Donald WilliamDirectorDisposed to issuer(D)6K
Feb 9, 2026Nicholson Donald WilliamDirectorDisposed to issuer(D)2K
Feb 9, 2026Nicholson Donald WilliamDirectorDisposed to issuer(D)3K
Feb 9, 2026Nicholson Donald WilliamDirectorDisposed to issuer(D)2K
Feb 9, 2026Quinn Anthony G.DirectorTender(U)30K
Feb 9, 2026Quinn Anthony G.DirectorTender(U)7K
Feb 9, 2026Quinn Anthony G.DirectorDisposed to issuer(D)3K
Feb 9, 2026Quinn Anthony G.DirectorDisposed to issuer(D)2K
Feb 9, 2026Quinn Anthony G.DirectorDisposed to issuer(D)2K
Feb 9, 2026Quinn Anthony G.DirectorDisposed to issuer(D)5K
Feb 9, 2026Quinn Anthony G.DirectorDisposed to issuer(D)3K
Feb 9, 2026Quinn Anthony G.DirectorDisposed to issuer(D)6K
Feb 9, 2026Rhodes Jason PDirectorTender(U)117K
Feb 9, 2026Rhodes Jason PDirectorTender(U)60
Feb 9, 2026Rhodes Jason PDirectorTender(U)711K
Feb 9, 2026Rhodes Jason PDirectorDisposed to issuer(D)3K
Feb 9, 2026Rhodes Jason PDirectorDisposed to issuer(D)2K
Feb 9, 2026Rhodes Jason PDirectorDisposed to issuer(D)2K
Feb 9, 2026Rhodes Jason PDirectorDisposed to issuer(D)5K
Feb 9, 2026Rowland Charles A JrDirectorTender(U)53K
Feb 9, 2026Rowland Charles A JrDirectorDisposed to issuer(D)3K
Feb 9, 2026Rowland Charles A JrDirectorDisposed to issuer(D)4K
Feb 9, 2026Rowland Charles A JrDirectorDisposed to issuer(D)5K
Feb 9, 2026Rowland Charles A JrDirectorDisposed to issuer(D)6K
Feb 9, 2026Rowland Charles A JrDirectorDisposed to issuer(D)2K
Feb 9, 2026Rowland Charles A JrDirectorDisposed to issuer(D)3K
Feb 9, 2026Rowland Charles A JrDirectorDisposed to issuer(D)2K
Feb 9, 2026Stehman-Breen CatherineDirectorTender(U)5K
Feb 9, 2026Stehman-Breen CatherineDirectorDisposed to issuer(D)3K
Feb 9, 2026Stehman-Breen CatherineDirectorDisposed to issuer(D)5K
Feb 9, 2026Stehman-Breen CatherineDirectorDisposed to issuer(D)6K
Feb 9, 2026Stehman-Breen CatherineDirectorDisposed to issuer(D)2K
Feb 9, 2026Stehman-Breen CatherineDirectorDisposed to issuer(D)3K
Feb 9, 2026Stehman-Breen CatherineDirectorDisposed to issuer(D)2K
Feb 9, 2026Atlas Venture Associates X, L.P.10% OwnerTender(U)711K
Feb 9, 2026Atlas Venture Associates X, L.P.10% OwnerTender(U)60
Feb 9, 2026Atlas Venture Associates X, L.P.10% OwnerTender(U)117K
Feb 2, 2026McDonough GeoffDirectorOption exercise(M)2K
Feb 2, 2026McDonough GeoffDirectorTax withholding(F)550$5.64$3K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-292026-07-14. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).