CRESCENT BIOPHARMA, INC. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Pinkas Jan | Chief Scientific Officer | Award / Grant | 17,507 | — | — | 17,507 | Dec 15, 2025 |
| Doughty Christopher Grant | Chief Business Officer | Award / Grant | 8,000 | — | — | 62,194 | Dec 15, 2025 |
| Brumm Joshua T | Chief Executive Officer | Award / Grant | 10,000 | — | — | 323,517 | Dec 15, 2025 |
| Scalzo Richard William | Chief Financial Officer | Award / Grant | 5,000 | — | — | 19,422 | Dec 15, 2025 |
| McNeill Jonathan | President and COO | Award / Grant | 6,000 | — | — | 159,707 | Dec 15, 2025 |
| Im Ellie Eunkyung | Chief Medical Officer | Award / Grant | 16,298 | — | — | 16,298 | Dec 15, 2025 |
| Lynch Ryan | See Remarks | Award / Grant | 4,000 | — | — | 12,378 | Dec 15, 2025 |
| Bispham Barbara Harlin | See Remarks | Award / Grant | 12,422 | — | — | 12,422 | Dec 15, 2025 |
| Harwin Peter Evan | — | Purchase | 1,360,000 | $13.41 | $18,237,600 | 2,747,866 | Dec 4, 2025 |
| BVF GP HOLDINGS LLC | — | Other | 657,308 | — | — | 707,116 | Jun 13, 2025 |
| Siren, L.L.C. | — | Sale | 260,873 | $0.19 | $49,566 | 6,317,565 | Aug 7, 2024 |
| Invus Public Equities Advisors, LLC | — | Sale | 55,732 | $0.18 | $10,032 | 6,639,926 | Aug 5, 2024 |
| Siren, L.L.C. | — | Sale | 63,564 | $0.22 | $13,984 | 7,146,381 | Aug 2, 2024 |
| Siren, L.L.C. | — | Sale | 756,835 | $0.22 | $166,504 | 7,209,945 | Jul 29, 2024 |
| Rock Edwin | Chief Medical Officer | Purchase | 115,000 | $0.27 | $31,050 | 680,403 | Jun 20, 2024 |
| Hahn Brian M. | SVP Finance, CFO | Purchase | 17,500 | $0.25 | $4,375 | 70,643 | Jun 18, 2024 |
| JUNIUS DANIEL M | — | Award / Grant | 5,209 | $3.00 | $15,627 | 98,459 | Mar 29, 2024 |
| Goldberg Mark Alan | — | Award / Grant | 4,584 | $3.00 | $13,752 | 24,828 | Mar 29, 2024 |
| King Rachel K. | — | Award / Grant | 3,334 | $3.00 | $10,002 | 515,194 | Mar 29, 2024 |
| Andrews Patricia S | — | Award / Grant | 5,191 | $2.36 | $12,251 | 58,608 | Dec 29, 2023 |
| King Rachel K. | — | Award / Grant | 4,238 | $2.36 | $10,002 | 511,860 | Dec 29, 2023 |
| Goldberg Mark Alan | — | Award / Grant | 5,827 | $2.36 | $13,752 | 20,244 | Dec 29, 2023 |
| Goldberg Mark Alan | — | Award / Grant | 9,167 | $1.50 | $13,751 | 14,417 | Sep 30, 2023 |
| Andrews Patricia S | — | Award / Grant | 8,167 | $1.50 | $12,251 | 53,417 | Sep 30, 2023 |
| King Rachel K. | — | Award / Grant | 6,667 | $1.50 | $10,001 | 507,622 | Sep 30, 2023 |
| Rock Edwin | Chief Medical Officer | Purchase | 35,000 | $1.38 | $48,300 | 345,000 | Sep 22, 2023 |
| Koenig Scott | — | Option Exercise | 21,000 | $0.60 | $12,600 | 36,750 | Jun 1, 2023 |
| Hahn Brian M. | SVP Finance, CFO | Sale | 3,700 | $1.95 | $7,215 | 53,143 | May 17, 2023 |
| JUNIUS DANIEL M | — | Purchase | 30,000 | $1.56 | $46,800 | 93,250 | May 10, 2023 |
| Johnson Bruce S | SVP & Chief Commercial Officer | Purchase | 13,500 | $1.57 | $21,195 | 138,980 | May 8, 2023 |
| Wittouck Amaury | — | Purchase | 100,000 | $1.70 | $170,000 | 8,589,064 | Feb 24, 2023 |
| Artal Group S.A. | — | Purchase | 150,000 | $1.79 | $268,500 | 8,289,064 | Feb 21, 2023 |
| Wittouck Amaury | — | Purchase | 1,000,000 | $2.16 | $2,160,000 | 7,573,798 | Feb 17, 2023 |
| Wittouck Amaury | — | Purchase | 11,451 | $3.24 | $37,101 | 6,573,798 | Feb 9, 2023 |
| Koenig Scott | — | Option Exercise | 10,500 | $2.55 | $26,775 | 15,750 | Jan 27, 2023 |
| SANDELL SCOTT D | — | Sale | 358,371 | $3.26 | $1,168,289 | 4,379,242 | Jan 25, 2023 |
| SANDELL SCOTT D | — | Sale | 32,139 | $2.76 | $88,704 | 3,881,933 | Jan 5, 2023 |
| SANDELL SCOTT D | — | Sale | 56,054 | $2.91 | $163,117 | 4,776,836 | Jan 3, 2023 |
| Rock Edwin | Chief Medical Officer | Purchase | 110,000 | $2.25 | $247,500 | 310,000 | Dec 22, 2022 |
| JUNIUS DANIEL M | — | Purchase | 20,000 | $1.87 | $37,400 | 63,250 | Nov 17, 2022 |
| Rock Edwin | Chief Medical Officer | Purchase | 100,000 | $1.66 | $166,000 | 200,000 | Nov 14, 2022 |
| PEARSON TIMOTHY R | — | Purchase | 19,400 | $1.29 | $25,026 | 24,650 | Nov 11, 2022 |
| Semerjian Harout | Chief Executive Officer | Purchase | 25,000 | $1.29 | $32,250 | 25,000 | Nov 11, 2022 |
| Hahn Brian M. | SVP Finance, CFO | Purchase | 20,000 | $1.06 | $21,200 | 56,843 | Nov 11, 2022 |
| Magnani John L. | SVP of Research, CSO | Purchase | 45,045 | $1.17 | $52,703 | 366,078 | Nov 11, 2022 |
| Girard Armand | SVP, Chief Business Officer | Purchase | 6,500 | $1.05 | $6,825 | 29,161 | Nov 11, 2022 |
| King Rachel K. | — | W | 11,641 | — | — | 500,955 | Aug 2, 2022 |
| Magnani John L. | SVP of Research, CSO | Sale | 3,227 | $1.09 | $3,517 | 321,033 | Mar 9, 2022 |
| Girard Armand | SVP, Chief Business Officer | Sale | 2,339 | $1.09 | $2,550 | 22,661 | Mar 9, 2022 |
| Hahn Brian M. | SVP Finance, CFO | Sale | 2,917 | $1.09 | $3,180 | 36,843 | Mar 9, 2022 |