SCHEDULE 13D/A Filed 2026-07-20 Event 2026-07-16 SEC 0001104659-26-085114 →

Fairmount Funds Management LLC → Crescent Biopharma, Inc. CBIO

Stake: — Shares: 6,593,385 Class: Ordinary Shares, $0.001 par value

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

4 transactions

4 buys · 0 sales · 0 awards/exercises

Issuer Cluster

2 13D/G filings on this issuer

1 other filing besides this one

Filer Track Record

18 filings by this filer

17 other filings in the data moat

Short Interest · settle 2026-06-30

DTC 7.03

3,673,343 shares short · +9.8% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $3.56M

Point72 Asset Mgmt

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-06-02	Violin Jonathan	director	Award	11,050	$17.01	$188K
2026-06-02	Lubner David Charles	director	Award	11,050	$17.01	$188K
2026-06-02	Balcom Alexandra	director	Award	11,050	$17.01	$188K
2026-06-02	Moran Susan	director	Award	11,050	$17.01	$188K

Other 13D/G Filings on Crescent Biopharma, Inc.

Filed	Form	Filer	Stake	Shares
2025-06-20	SCHEDULE	Adage Capital Management, L.P.	37.00%	50,912	view →

Other Filings by Fairmount Funds Management LLC

Filed	Form	Issuer	Stake	Shares
2026-07-01	SCHEDULE 13D/A	ORUKA THERAPEUTICS, INC. ORKA	19.50%	14,553,895	view →
2026-06-23	SCHEDULE 13D/A	SPYRE THERAPEUTICS, INC. SYRE	—	8,835,440	view →
2026-06-23	SCHEDULE 13D/A	Apogee Therapeutics, Inc. APGE	9.99%	6,713,519	view →
2026-06-09	SCHEDULE 13D/A	Jade Biosciences, Inc. JBIO	19.99%	14,069,494	view →
2026-05-13	SCHEDULE 13D/A	Viridian Therapeutics, Inc.\DE VRDN	—	17,201,800	view →
2026-01-22	SCHEDULE	Apogee Therapeutics, Inc. APGE	9.99%	6,047,027	view →
2026-01-22	SCHEDULE	Cogent Biosciences, Inc. COGT	9.90%	16,261,918	view →
2025-10-14	SCHEDULE	Apogee Therapeutics, Inc. APGE	9.99%	5,776,881	view →
2025-09-15	SCHEDULE	Dianthus Therapeutics, Inc. /DE/ DNTH	9.90%	4,052,052	view →
2025-03-10	SCHEDULE	Oruka Therapeutics, Inc. ORKA	19.99%	8,511,824	view →
2024-04-01	SC	Dianthus Therapeutics, Inc. /DE/ DNTH	—	—	view →
2024-04-01	SC	Viridian Therapeutics, Inc.\DE VRDN	—	—	view →
2024-04-01	SC	Apogee Therapeutics, Inc. APGE	—	—	view →
2024-04-01	SC	Cogent Biosciences, Inc. COGT	—	—	view →
2023-12-11	SC	Spyre Therapeutics, Inc. SYRE	—	—	view →
2023-06-13	SC	Cogent Biosciences, Inc. COGT	—	—	view →
2021-09-23	SC	Viridian Therapeutics, Inc.\DE VRDN	—	—	view →

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