Company · Ownership research

CRESCENT BIOPHARMA, INC. CBIO

CIK 0001253689

Form 3 statements with an event date from Sep 1, 2023 to Sep 24, 2026.

Insider trading Initial holdings Institutional holders

Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Where insider ownership starts.

Form 3 is an initial ownership statement filed when someone becomes a reporting insider. These holdings do not mean they bought shares that day.

202513 of 13 statements

Holdings date	Insider	Initial holdings
2025-07-07	Pinkas Jan Chief Scientific Officer	No securities reported	▾
2025-06-13	Im Ellie Eunkyung Chief Medical Officer	1 derivative holding	▾
2025-06-13	Bispham Barbara Harlin See Remarks	1 derivative holding	▾
2025-06-13	Lynch Ryan See Remarks	1 derivative holding	▾
2025-06-13	Doughty Christopher Grant Chief Business Officer	39.48K shares · 1 derivative holding	▾
2025-06-13	Scalzo Richard William Chief Financial Officer	1 derivative holding	▾
2025-06-13	McNeill Jonathan See Remarks	134.20K shares · 1 derivative holding	▾
2025-06-13	Brumm Joshua T Chief Executive Officer · Director	268.40K shares · 1 derivative holding	▾
2025-06-13	Harwin Peter Evan · Fairmount Healthcare Fund II L.P. · Fairmount Funds Management LLC · Kiselak Tomas Director · 10% owner / Director · 10% owner / Director · 10% owner / Director · 10% owner	1.39M shares · 2 derivative holdings	▾
2025-06-13	Lubner David Charles Director	1 derivative holding	▾
2025-06-13	Violin Jonathan Director	69.52K shares · 1 derivative holding	▾
2025-06-13	Balcom Alexandra Director	1 derivative holding	▾
2025-06-13	Moran Susan Director	1 derivative holding	▾

Showing 13 / 13 statements in 2025. The complete set is available through the API.

CRESCENT BIOPHARMA, INC. · CBIO

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.