Wednesday, October 28, 2026
Data from SEC filings, checked daily
Public filings, plainly told
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StockCIK 1253689

CRESCENT BIOPHARMA, INC. (CBIO): Insider Trades and Fund Holdings

In the past 12 months, CRESCENT BIOPHARMA, INC. insiders reported 0 open-market purchases worth $0 and 9 sales worth $286K; 9 of the sales were reported as made under a 10b5-1 trading plan.

0Insider buys, 12 months
$0Bought by insiders, 12 months
$286KSold by insiders, 12 months
0Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Sep 18, 2026.

Recent CBIO insider trades
FiledTradedInsiderRoleTypeSharesPrice ($)ValueHoldingFiling
Sep 18Sep 18Joshua T. BrummCEOCEO▼ SELL10b5-17,83716.71$131K−2.8%Form 4 ↗
Sep 18Sep 18Jonathan McNeillCOOCOO▼ SELL10b5-13,83916.71$64K−2.8%Form 4 ↗
Sep 18Sep 16Joshua T. BrummCEOCEO▼ SELL10b5-11,61017.90$29K−0.6%Form 4 ↗
Sep 18Sep 16Jonathan McNeillCOOCOO▼ SELL10b5-173117.90$13K−0.5%Form 4 ↗
Sep 18Sep 16Jan PinkasChief Scientific OfficerChief Scientific Officer▼ SELL10b5-165817.90$12K−3.0%Form 4 ↗
Sep 18Sep 16Ellie Eunkyung ImChief Medical OfficerChief Medical Officer▼ SELL10b5-162317.90$11K−2.8%Form 4 ↗
Sep 18Sep 16Barbara Harlin BisphamSee RemarksSee Remarks▼ SELL10b5-162017.90$11K−3.2%Form 4 ↗
Sep 18Sep 16Richard William ScalzoCFOCFO▼ SELL10b5-156817.90$10K−2.8%Form 4 ↗
Sep 18Sep 16Ryan LynchSee RemarksSee Remarks▼ SELL10b5-124017.90$4K−1.7%Form 4 ↗
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Insiders who traded in the past year

InsiderRoleBuysBoughtSellsSoldLatest
Joshua T. BrummCEO0$02$160KSep 18, 2026
Jonathan McNeillCOO0$02$77KSep 18, 2026
Jan PinkasChief Scientific Officer0$01$12KSep 18, 2026
Ellie Eunkyung ImChief Medical Officer0$01$11KSep 18, 2026
Barbara Harlin BisphamSee Remarks0$01$11KSep 18, 2026
Richard William ScalzoCFO0$01$10KSep 18, 2026
Ryan LynchSee Remarks0$01$4KSep 18, 2026

Tracked funds that report CBIO

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

FundQuarterSharesValue% of portfolioChange
Renaissance TechnologiesQ2 20260$00.00%▼ Sold out
Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →