LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
CBIOCIK 0001253689

CRESCENT BIOPHARMA, INC.

51 transactions by 13 insiders, from December 4, 2025 to September 18, 2026.

Transactions
5113 insiders
Bought · P
$30.6Mopen market
Sold · S
$1.5Mopen market
Net
+$29.1Mnet buying

Officers and directors

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

InsiderTradesPlannedBoughtSold
Joshua T. BrummCEO73/7—$921K
Jonathan McNeillCOO73/7—$447K
Ryan LynchOfficer52/5—$13K
Ellie Eunkyung ImCMO52/5—$33K
Barbara Harlin BisphamOfficer52/5—$33K
Fairmount Funds Management LLCDir5—$30.6M—
Jan PinkasChief52/5—$35K
Richard William ScalzoCFO52/5—$30K
Christopher Grant DoughtyChief3———
David Charles LubnerDir1———
Jonathan ViolinDir1———
Susan MoranDir1———
Alexandra BalcomDir1———

All transactions

51 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Ryan LynchOfficerSep 16SPLAN240$17.90$4K
Jan PinkasChiefSep 16SPLAN658$17.90$12K
Ellie Eunkyung ImCMOSep 16SPLAN623$17.90$11K
Richard William ScalzoCFOSep 16SPLAN568$17.90$10K
Barbara Harlin BisphamOfficerSep 16SPLAN620$17.90$11K
Joshua T. BrummCEOSep 18SPLAN7,837$16.71$131K
Joshua T. BrummCEOSep 16SPLAN1,610$17.90$29K
Jonathan McNeillCOOSep 18SPLAN3,839$16.71$64K
Jonathan McNeillCOOSep 16SPLAN731$17.90$13K
Fairmount Funds Management LLCDirDERIVJOINTJul 16P525,897$14.50$7.6M?
Fairmount Funds Management LLCDirJOINTJul 16P853,450$14.50$12.4M
Ryan LynchOfficerJun 22SPLAN465$17.99$8K
Jan PinkasChiefJun 22SPLAN1,288$17.99$23K
Richard William ScalzoCFOJun 22SPLAN1,112$17.99$20K
Ellie Eunkyung ImCMOJun 22SPLAN1,219$17.99$22K
Jonathan McNeillCOOJun 22SPLAN20,549$17.99$370K
Joshua T. BrummCEOJun 22SPLAN42,305$17.99$761K
Barbara Harlin BisphamOfficerJun 22SPLAN1,218$17.99$22K
Jonathan ViolinDirDERIVJun 2A11,050$0.00—?
David Charles LubnerDirDERIVJun 2A11,050$0.00—?
Susan MoranDirDERIVJun 2A11,050$0.00—?
Fairmount Funds Management LLCDirDERIVJOINTJun 2A11,050$0.00—?
Alexandra BalcomDirDERIVJun 2A11,050$0.00—?
Jan PinkasChiefDERIVDec 15A70,025$0.00—?
Jan PinkasChiefDec 15A5,000——
Jan PinkasChiefDec 15A17,507——
Christopher Grant DoughtyChiefDERIVDec 15A58,855$0.00—?
Christopher Grant DoughtyChiefDec 15A8,000——
Christopher Grant DoughtyChiefDec 15A14,714——
Richard William ScalzoCFODERIVDec 15A57,688$0.00—?
Richard William ScalzoCFODec 15A5,000——
Richard William ScalzoCFODec 15A14,422——
Jonathan McNeillCOODERIVDec 15A78,029$0.00—?
Jonathan McNeillCOODec 15A6,000——
Jonathan McNeillCOODec 15A19,507——
Ellie Eunkyung ImCMODERIVDec 15A65,190$0.00—?
Ellie Eunkyung ImCMODec 15A5,000——
Ellie Eunkyung ImCMODec 15A16,298——
Ryan LynchOfficerDERIVDec 15A33,512$0.00—?
Ryan LynchOfficerDec 15A4,000——
Ryan LynchOfficerDec 15A8,378——
Joshua T. BrummCEODERIVDec 15A180,467$0.00—?
Joshua T. BrummCEODec 15A10,000——
Joshua T. BrummCEODec 15A45,117——
Barbara Harlin BisphamOfficerDERIVDec 15A72,185$0.00—?
Barbara Harlin BisphamOfficerDec 15A6,000——
Barbara Harlin BisphamOfficerDec 15A12,422——
Jonathan McNeillCOODERIVDec 8A172,836$0.00—?
Joshua T. BrummCEODERIVDec 8A345,672$0.00—?
Fairmount Funds Management LLCDirDERIVJOINTDec 4P131,434$13.41$1.8M?
Fairmount Funds Management LLCDirJOINTDec 4P1,360,000$13.41$18.2M