CBIO- Crescent Biopharma, Inc.

Insider activity in CBIO over the last quarter tilts toward selling: insiders offloaded a net 16,726 shares worth roughly $286K.

Classified under Biotechnology (Health Care sector), CBIO's insider flows are most useful compared with peers in the same group.

Insider Ownership

Role	Insider	Shares	Value	30d
10%	Fairmount Funds Management LLC	3.60M	$52.22M	-
CEO	Brumm Joshua T	271.8K	$4.54M	-
COO	McNeill Jonathan	134.6K	$2.25M	-
Other	Doughty Christopher Grant	54.2K	-	-
Other	Pinkas Jan	21.6K	$386.3K	-

Buys and sells only

10 filings · page 2

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
Jun 22, 2026	McNeill Jonathan55	President And COO	Sell	20,549	$17.99	$369,676.51	-12.9%	-7.5%	-
Jun 22, 2026	Pinkas Jan	Chief Scientific Officer	Sell	1,288	$17.99	$23,171.12	-5.5%	-7.5%	-
Jun 22, 2026	Im Ellie Eunkyung	Chief Medical Officer	Sell	1,219	$17.99	$21,929.81	-5.2%	-7.5%	-
Jun 22, 2026	Scalzo Richard William58	Chief Financial Officer	Sell	1,112	$17.99	$20,004.88	-5.2%	-7.5%	-
Jun 22, 2026	Lynch Ryan	See Remarks	Sell	465	$17.99	$8,365.35	-3.2%	-7.5%	-
Dec 4, 2025	Fairmount Funds Management LLC74	Director, 10% Owner	Buy	1,360,000	$13.41	$18,237,600.00	+98.0%	-11.5%	-
Aug 8, 2024	Invus Public Equities, L.P.78	10% Owner	Sell	322,361	$0.19	$61,206.32	-4.9%	+100.7%	-31.5%
Aug 6, 2024	Invus Public Equities, L.P.78	10% Owner	Sell	220,255	$0.19	$41,183.94	-3.2%	+128.8%	-38.6%
Aug 2, 2024	Invus Public Equities, L.P.78	10% Owner	Sell	349,764	$0.20	$71,097.02	-4.9%	+100.4%	-40.9%
Jul 30, 2024	Invus Public Equities, L.P.78	10% Owner	Sell	1,379,119	$0.23	$315,261.62	-16.1%	-22.8%	-42.2%