22 insiders reported 70 Form 4 transactions for CRESCENT BIOPHARMA, INC. (CBIO) over the past 18 months (most recent 2026-09-18). Recent activity: Brumm Joshua T (Chief Executive Officer) Sell 1,610 shares, Lynch Ryan (Treasurer, Senior Vice President of Finance and Chief Accounting Officer) Sell 240 shares, Scalzo Richard William (Chief Financial Officer) Sell 568 shares, McNeill Jonathan (President and COO) Sell 731 shares, Im Ellie Eunkyung (Chief Medical Officer) Sell 623 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-18 | Brumm Joshua T | Chief Executive Officer | Sell | 1,610 | $28,819 |
| 2026-09-18 | Lynch Ryan | Treasurer, Senior Vice President of Finance and Chief Accounting Officer | Sell | 240 | $4,296 |
| 2026-09-18 | Scalzo Richard William | Chief Financial Officer | Sell | 568 | $10,167 |
| 2026-09-18 | McNeill Jonathan | President and COO | Sell | 731 | $13,085 |
| 2026-09-18 | Im Ellie Eunkyung | Chief Medical Officer | Sell | 623 | $11,152 |
| 2026-09-18 | Bispham Barbara Harlin | General Counsel and Corporate Secretary | Sell | 620 | $11,098 |
| 2026-09-18 | Pinkas Jan | Chief Scientific Officer | Sell | 658 | $11,778 |
| 2026-09-18 | Brumm Joshua T | Chief Executive Officer | Sell | 7,837 | $130,956 |
| 2026-09-18 | McNeill Jonathan | President and COO | Sell | 3,839 | $64,150 |
| 2026-07-20 | Kiselak Tomas | Director | Buy | 853,450 | $12.4M |
| 2026-07-20 | Fairmount Healthcare Fund II L.P. | Director | Buy | 853,450 | $12.4M |
| 2026-07-20 | Fairmount Funds Management LLC | Director | Buy | 853,450 | $12.4M |
| 2026-07-20 | Harwin Peter Evan | Director | Buy | 853,450 | $12.4M |
| 2026-06-23 | Pinkas Jan | Chief Scientific Officer | Sell | 1,288 | $23,171 |
| 2026-06-23 | Scalzo Richard William | Chief Financial Officer | Sell | 1,112 | $20,005 |
| 2026-06-23 | McNeill Jonathan | President and COO | Sell | 20,549 | $369,677 |
| 2026-06-23 | Im Ellie Eunkyung | Chief Medical Officer | Sell | 1,219 | $21,930 |
| 2026-06-23 | Bispham Barbara Harlin | General Counsel and Corporate Secretary | Sell | 1,218 | $21,912 |
| 2026-06-23 | Lynch Ryan | Treasurer, Senior Vice President of Finance and Chief Accounting Officer | Sell | 465 | $8,365 |
| 2026-06-23 | Brumm Joshua T | Chief Executive Officer | Sell | 42,305 | $761,067 |
| 2025-12-17 | Doughty Christopher Grant | Chief Business Officer | Buy | 14,714 | $0 |
| 2025-12-17 | Doughty Christopher Grant | Chief Business Officer | Buy | 8,000 | $0 |
| 2025-12-17 | Brumm Joshua T | Chief Executive Officer | Buy | 45,117 | $0 |
| 2025-12-17 | Brumm Joshua T | Chief Executive Officer | Buy | 10,000 | $0 |
| 2025-12-17 | Bispham Barbara Harlin | General Counsel and Corporate Secretary | Buy | 12,422 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-09-18