LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
ETNBCIK 0001785173

89bio, Inc.

105 transactions by 14 insiders, from October 22, 2025 to October 30, 2025.

Transactions
10514 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
Quoc Le-NguyenOfficer13———
Michael R. HaydenDir13———
Ryan MartinsCFO12———
Rohan PalekarCEO10———
Harry H. MansbachCMO10———
RA CAPITAL MANAGEMENT, L.P.Dir10———
Steven AltschulerDir7———
Derek DiRoccoDir7———
Lota S. ZothDir6———
Kathleen LaporteDir5———
Edward Morrow Atkinson IIIDir4———
Charles McWherterDir3———
Francis Willard SarenaCOO3———
Martin BablerDir2———

All transactions

105 in total, newest filings first.

InsiderDateCodeSharesPriceValue
RA CAPITAL MANAGEMENT, L.P.DirDERIVJOINTOct 30D56,400$0.00—?
RA CAPITAL MANAGEMENT, L.P.DirDERIVJOINTOct 30D45,150$0.00—?
RA CAPITAL MANAGEMENT, L.P.DirDERIVJOINTOct 30D27,400$0.00—?
RA CAPITAL MANAGEMENT, L.P.DirDERIVJOINTOct 30D25,000$0.00—?
RA CAPITAL MANAGEMENT, L.P.DirDERIVJOINTOct 30D12,500$0.00—?
RA CAPITAL MANAGEMENT, L.P.DirDERIVJOINTOct 30D7,000$0.00—?
RA CAPITAL MANAGEMENT, L.P.DirDERIVJOINTOct 30D7,000$0.00—?
RA CAPITAL MANAGEMENT, L.P.DirDERIVJOINTOct 30D4,331,081$0.00—?
RA CAPITAL MANAGEMENT, L.P.DirJOINTOct 30D335,364——
RA CAPITAL MANAGEMENT, L.P.DirJOINTOct 30D19,554,319——
Kathleen LaporteDirDERIVOct 30D56,400$0.00—?
Kathleen LaporteDirDERIVOct 30D45,150$0.00—?
Kathleen LaporteDirDERIVOct 30D27,400$0.00—?
Kathleen LaporteDirDERIVOct 30D12,500$0.00—?
Kathleen LaporteDirDERIVOct 30D25,000$0.00—?
Michael R. HaydenDirDERIVOct 30D56,400$0.00—?
Michael R. HaydenDirDERIVOct 30D45,150$0.00—?
Michael R. HaydenDirDERIVOct 30D27,400$0.00—?
Michael R. HaydenDirDERIVOct 30D25,000$0.00—?
Michael R. HaydenDirDERIVOct 30D12,500$0.00—?
Michael R. HaydenDirDERIVOct 30D7,000$0.00—?
Michael R. HaydenDirDERIVOct 30D7,000$0.00—?
Michael R. HaydenDirDERIVOct 30D22,730$0.00—?
Michael R. HaydenDirDERIVOct 30D2,933$0.00—?
Michael R. HaydenDirDERIVOct 30D27,647$0.00—?
Michael R. HaydenDirOct 30U61,538——
Michael R. HaydenDirOct 30U103,978——
Michael R. HaydenDirOct 30U80,904——
Ryan MartinsCFODERIVOct 30D300,000$0.00—?
Ryan MartinsCFODERIVOct 30D175,000$0.00—?
Ryan MartinsCFODERIVOct 30D110,000$0.00—?
Ryan MartinsCFODERIVOct 30D48,102$0.00—?
Ryan MartinsCFODERIVOct 30D57,500$0.00—?
Ryan MartinsCFODERIVOct 30D47,500$0.00—?
Ryan MartinsCFOOct 30U374,295——
Ryan MartinsCFOOct 30A35,000$0.00—
Steven AltschulerDirDERIVOct 30D56,400$0.00—?
Steven AltschulerDirDERIVOct 30D45,150$0.00—?
Steven AltschulerDirDERIVOct 30D27,400$0.00—?
Steven AltschulerDirDERIVOct 30D25,000$0.00—?
Steven AltschulerDirDERIVOct 30D12,500$0.00—?
Steven AltschulerDirDERIVOct 30D7,000$0.00—?
Steven AltschulerDirDERIVOct 30D40,000$0.00—?
Rohan PalekarCEODERIVOct 30D848,000$0.00—?
Rohan PalekarCEODERIVOct 30D605,000$0.00—?
Rohan PalekarCEODERIVOct 30D300,000$0.00—?
Rohan PalekarCEODERIVOct 30D220,000$0.00—?
Rohan PalekarCEODERIVOct 30D203,750$0.00—?
Rohan PalekarCEODERIVOct 30D170,000$0.00—?
Rohan PalekarCEODERIVOct 30D132,242$0.00—?
Rohan PalekarCEODERIVOct 30D120,231$0.00—?
Rohan PalekarCEOOct 30U934,273——
Rohan PalekarCEOOct 30A125,000$0.00—
Charles McWherterDirDERIVOct 30D56,400$0.00—?
Charles McWherterDirDERIVOct 30D67,700$0.00—?
Charles McWherterDirOct 30U25,000——
Edward Morrow Atkinson IIIDirDERIVOct 30D56,400$0.00—?
Edward Morrow Atkinson IIIDirDERIVOct 30D45,150$0.00—?
Edward Morrow Atkinson IIIDirDERIVOct 30D27,400$0.00—?
Edward Morrow Atkinson IIIDirDERIVOct 30D20,000$0.00—?
Lota S. ZothDirDERIVOct 30D56,400$0.00—?
Lota S. ZothDirDERIVOct 30D45,150$0.00—?
Lota S. ZothDirDERIVOct 30D27,400$0.00—?
Lota S. ZothDirDERIVOct 30D25,000$0.00—?
Lota S. ZothDirDERIVOct 30D12,500$0.00—?
Lota S. ZothDirDERIVOct 30D20,000$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D17,500$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D26,400$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D320,000$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D195,000$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D120,000$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D70,000$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D67,500$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D50,000$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D3,312$0.00—?
Quoc Le-NguyenOfficerDERIVOct 30D4,063$0.00—?
Quoc Le-NguyenOfficerOct 30U13,694——
Quoc Le-NguyenOfficerOct 30U351,684——
Quoc Le-NguyenOfficerOct 30A50,000$0.00—
Martin BablerDirDERIVOct 30D56,400$0.00—?
Martin BablerDirDERIVOct 30D67,700$0.00—?
Derek DiRoccoDirDERIVOct 30D56,400$0.00—?
Derek DiRoccoDirDERIVOct 30D45,150$0.00—?
Derek DiRoccoDirDERIVOct 30D27,400$0.00—?
Derek DiRoccoDirDERIVOct 30D25,000$0.00—?
Derek DiRoccoDirDERIVOct 30D12,500$0.00—?
Derek DiRoccoDirDERIVOct 30D7,000$0.00—?
Derek DiRoccoDirDERIVOct 30D7,000$0.00—?
Francis Willard SarenaCOODERIVOct 30D215,000$0.00—?
Francis Willard SarenaCOODERIVOct 30D350,000$0.00—?
Francis Willard SarenaCOOOct 30U75,310——
Harry H. MansbachCMODERIVOct 30D320,000$0.00—?
Harry H. MansbachCMODERIVOct 30D195,000$0.00—?
Harry H. MansbachCMODERIVOct 30D120,000$0.00—?
Harry H. MansbachCMODERIVOct 30D70,000$0.00—?
Harry H. MansbachCMODERIVOct 30D67,500$0.00—?
Harry H. MansbachCMODERIVOct 30D45,000$0.00—?
Harry H. MansbachCMODERIVOct 30D39,037$0.00—?
Harry H. MansbachCMODERIVOct 30D98,204$0.00—?
Harry H. MansbachCMOOct 30U352,656——
Harry H. MansbachCMOOct 30A50,000$0.00—
Ryan MartinsCFODERIVOct 22M3,898$0.00—?
Ryan MartinsCFODERIVOct 22M76,901$0.00—?
Ryan MartinsCFOOct 22M3,898$4.44$17K
Ryan MartinsCFOOct 22M76,901$3.11$239K