JM
Jonathan McNeill
President and COO

Jonathan McNeill insider trades: Crescent Biopharma (CBIO) stock sales

President and COO, Crescent Biopharma Last trade Sep 18, 2026 31 Form 4 filings
$447K
Sold, last 12 months
2 sales
$0
Bought, last 12 months
0 buys
20
Open-market trades
since 2021
2
Companies
last trade 2026

Trades on the price chart

Daily close, with an arrow on each day they bought or sold

Companies

Where Jonathan reports to the SEC

Open-market buys and sales

20 trades reported on SEC Form 4, newest first

DateStockTypeValue
Sep 18, 2026CBIO↓ Sell10b5-1$77K
Jun 22, 2026CBIO↓ Sell10b5-1$370K
Aug 19, 2024DYN↓ Sell$122K
Jun 11, 2024DYN↓ Sell$57K
May 16, 2024DYN↓ Sell10b5-1$78K
Mar 11, 2024DYN↓ Sell10b5-1$2.9M
Mar 7, 2024DYN↓ Sell10b5-1$63K
Mar 1, 2024DYN↓ Sell$812K
Jan 26, 2024DYN↓ Sell$491K
Jan 4, 2024DYN↓ Sell$529K
Dec 11, 2023DYN↓ Sell10b5-1$13K
Sep 18, 2023DYN↓ Sell10b5-1$12K
Sep 12, 2023DYN↓ Sell$13K
Jun 13, 2023DYN↓ Sell10b5-1$29K
Mar 14, 2023DYN↓ Sell10b5-1$29K
Jan 18, 2023DYN↓ Sell$140K
Jan 9, 2023DYN↓ Sell$349K
Dec 12, 2022DYN↓ Sell10b5-1$5K
Mar 11, 2022DYN↓ Sell10b5-1$4K
Sep 21, 2021DYN↓ Sell10b5-1$20K

Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.

Other CBIO insiders

Open-market trades in the last 12 months

About Jonathan McNeill's insider trades

Jonathan McNeill is President and COO at Crescent Biopharma (CBIO). Since Sep 21, 2021, Jonathan has reported no open-market purchases and 20 sales worth $6.1M on SEC Form 4. In the last 12 months: 2 sales ($447K).

12 sales (59% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.

Their filings also include grants and awards (9 filings), option exercises (5 filings), shares returned to the company (3 filings). These aren't open-market trades and aren't counted above.

How to read insider trades

Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every CBIO insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.