Insidervault
LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
GBIOCIK 0001733294

Generation Bio Co.

119 transactions by 13 insiders, from October 15, 2025 to February 9, 2026.

Transactions
11913 insiders
Bought · P
Nonenobody bought on the open market
Sold · S
Nonenobody sold on the open market
Net
+$0net buying

Officers and directors

People inside the company. What they do with their own shares is the reason this data exists.

InsiderTradesPlannedBoughtSold
Kevin John ConwayCFO24———
Geoff McDonoughDir16———
Yalonda HowzeCEO11———
Jason P. RhodesDir9———
Charles A. Rowland Jr.Dir8———
Anthony G. QuinnDir8———
Jeffrey M. JonasDir7———
Gustav ChristensenDir7———
Catherine Stehman-BreenDir7———
Donald William NicholsonDir7———
Ronald Harold Wilfred CooperDir6———
Dannielle AppelhansDir6———

Large holders and funds

Holders above 10%, often funds. They file the same form, but they trade for portfolio reasons, not because of what they know.

InsiderTradesPlannedBoughtSold
Atlas Venture Fund X, L.P.10%3———

All transactions

119 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Catherine Stehman-BreenDirDERIVFeb 9D6,000——
Catherine Stehman-BreenDirDERIVFeb 9D2,500——
Catherine Stehman-BreenDirDERIVFeb 9D1,920——
Catherine Stehman-BreenDirDERIVFeb 9D1,500——
Catherine Stehman-BreenDirDERIVFeb 9D5,200——
Catherine Stehman-BreenDirDERIVFeb 9D3,000——
Catherine Stehman-BreenDirFeb 9U4,752——
Charles A. Rowland Jr.DirDERIVFeb 9D6,000——
Charles A. Rowland Jr.DirDERIVFeb 9D2,500——
Charles A. Rowland Jr.DirDERIVFeb 9D1,920——
Charles A. Rowland Jr.DirDERIVFeb 9D1,500——
Charles A. Rowland Jr.DirDERIVFeb 9D5,200——
Charles A. Rowland Jr.DirDERIVFeb 9D4,246——
Charles A. Rowland Jr.DirDERIVFeb 9D3,000——
Charles A. Rowland Jr.DirFeb 9U53,475——
Jason P. RhodesDirDERIVFeb 9D6,000——
Jason P. RhodesDirDERIVFeb 9D2,500——
Jason P. RhodesDirDERIVFeb 9D1,920——
Jason P. RhodesDirDERIVFeb 9D1,500——
Jason P. RhodesDirDERIVFeb 9D5,200——
Jason P. RhodesDirDERIVFeb 9D3,000——
Jason P. RhodesDirFeb 9U60——
Jason P. RhodesDirFeb 9U116,693——
Jason P. RhodesDirFeb 9U711,193——
Anthony G. QuinnDirDERIVFeb 9D6,000——
Anthony G. QuinnDirDERIVFeb 9D2,500——
Anthony G. QuinnDirDERIVFeb 9D1,920——
Anthony G. QuinnDirDERIVFeb 9D1,500——
Anthony G. QuinnDirDERIVFeb 9D5,200——
Anthony G. QuinnDirDERIVFeb 9D3,000——
Anthony G. QuinnDirFeb 9U7,283——
Anthony G. QuinnDirFeb 9U29,928——
Donald William NicholsonDirDERIVFeb 9D6,000——
Donald William NicholsonDirDERIVFeb 9D2,500——
Donald William NicholsonDirDERIVFeb 9D1,920——
Donald William NicholsonDirDERIVFeb 9D1,500——
Donald William NicholsonDirDERIVFeb 9D5,200——
Donald William NicholsonDirDERIVFeb 9D3,000——
Donald William NicholsonDirFeb 9U21,357——
Geoff McDonoughDirDERIVFeb 9D24,046——
Geoff McDonoughDirDERIVFeb 9D16,874——
Geoff McDonoughDirDERIVFeb 9D90,168——
Geoff McDonoughDirDERIVFeb 9D50,624——
Geoff McDonoughDirDERIVFeb 9D37,499——
Geoff McDonoughDirDERIVFeb 9D25,099——
Geoff McDonoughDirDERIVFeb 9D19,903——
Geoff McDonoughDirFeb 9U27,500——
Geoff McDonoughDirFeb 9U22,646——
Geoff McDonoughDirFeb 9U138,492——
Jeffrey M. JonasDirDERIVFeb 9D6,000——
Jeffrey M. JonasDirDERIVFeb 9D2,500——
Jeffrey M. JonasDirDERIVFeb 9D1,920——
Jeffrey M. JonasDirDERIVFeb 9D1,500——
Jeffrey M. JonasDirDERIVFeb 9D5,200——
Jeffrey M. JonasDirDERIVFeb 9D4,246——
Jeffrey M. JonasDirDERIVFeb 9D3,000——
Yalonda HowzeCEODERIVFeb 9D7,630——
Yalonda HowzeCEODERIVFeb 9D25,102——
Yalonda HowzeCEODERIVFeb 9D11,883——
Yalonda HowzeCEODERIVFeb 9D10,710——
Yalonda HowzeCEOFeb 9U3,759——
Ronald Harold Wilfred CooperDirDERIVFeb 9D6,000——
Ronald Harold Wilfred CooperDirDERIVFeb 9D2,500——
Ronald Harold Wilfred CooperDirDERIVFeb 9D1,920——
Ronald Harold Wilfred CooperDirDERIVFeb 9D3,000——
Ronald Harold Wilfred CooperDirDERIVFeb 9D3,000——
Ronald Harold Wilfred CooperDirFeb 9U950——
Kevin John ConwayCFODERIVFeb 9D1,763——
Kevin John ConwayCFODERIVFeb 9D550——
Kevin John ConwayCFODERIVFeb 9D1,877——
Kevin John ConwayCFODERIVFeb 9D35,525——
Kevin John ConwayCFODERIVFeb 9D249——
Kevin John ConwayCFODERIVFeb 9D200——
Kevin John ConwayCFODERIVFeb 9D5,940——
Kevin John ConwayCFODERIVFeb 9D2,800——
Kevin John ConwayCFODERIVFeb 9D2,585——
Kevin John ConwayCFODERIVFeb 9D1,399——
Kevin John ConwayCFODERIVFeb 9D621——
Kevin John ConwayCFODERIVFeb 9D1,061——
Kevin John ConwayCFODERIVFeb 9D283——
Kevin John ConwayCFODERIVFeb 9D1,192——
Kevin John ConwayCFOFeb 9U2,072——
Gustav ChristensenDirDERIVFeb 9D6,000——
Gustav ChristensenDirDERIVFeb 9D2,500——
Gustav ChristensenDirDERIVFeb 9D1,920——
Gustav ChristensenDirDERIVFeb 9D1,500——
Gustav ChristensenDirDERIVFeb 9D5,200——
Gustav ChristensenDirDERIVFeb 9D3,000——
Gustav ChristensenDirFeb 9U13,142——
Dannielle AppelhansDirDERIVFeb 9D6,000——
Dannielle AppelhansDirDERIVFeb 9D2,500——
Dannielle AppelhansDirDERIVFeb 9D3,840——
Dannielle AppelhansDirDERIVFeb 9D3,000——
Dannielle AppelhansDirFeb 9U736——
Dannielle AppelhansDirFeb 9U1,263——
Atlas Venture Fund X, L.P.10%JOINTFeb 9U60——
Atlas Venture Fund X, L.P.10%JOINTFeb 9U116,693——
Atlas Venture Fund X, L.P.10%JOINTFeb 9U711,193——
Yalonda HowzeCEODERIVFeb 2M1,673$0.00—?
Yalonda HowzeCEOFeb 2F495$5.64$3K
Yalonda HowzeCEOFeb 2M1,673——
Geoff McDonoughDirDERIVFeb 2M1,582$0.00—?
Geoff McDonoughDirFeb 2F550$5.64$3K
Geoff McDonoughDirFeb 2M1,582——
Kevin John ConwayCFODERIVFeb 2M235$0.00—?
Kevin John ConwayCFOFeb 2F72$5.64$406
Kevin John ConwayCFOFeb 2M235——
Yalonda HowzeGCDERIVJan 15M335$0.00—?
Yalonda HowzeGCJan 15F99$5.64$558
Yalonda HowzeGCJan 15M335——
Geoff McDonoughDirDERIVJan 15M395$0.00—?
Geoff McDonoughDirJan 15F137$5.64$773
Geoff McDonoughDirJan 15M395——
Kevin John ConwayCFODERIVJan 15M59$0.00—?
Kevin John ConwayCFOJan 15F17$5.64$96
Kevin John ConwayCFOJan 15M59——
Kevin John ConwayCFODERIVOct 15M58$0.00—?
Kevin John ConwayCFOOct 15F18$6.71$121
Kevin John ConwayCFOOct 15M58——