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Fairmount Funds Management LLC

Q4 2025 · 13F-HR

Fairmount Funds Management LLCholdings as filed

Filed 2026-02-17 · accession 0001104659-26-016303

$1.31B
Reported value
13
Positions
2025-12-31
Period end
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The Brief · Fairmount Funds Management LLC · Q4 2025

AI · grounded in 13F

Fairmount Funds Management LLC closed its position in AXSM, reducing its exposure by $99.0M. The fund also exited positions in SRRK and ABVX, totaling losses of $67.9M and $60.6M respectively. On the buy side, the fund increased its stake in Crescent Biopharma Inc. by 97.99% and accumulated more shares of JBIO by 41.4%.

Holdings as filed

CUSIPTickerIssuerValue% port.SharesClassVoting
19240Q201COGTCOGENT BIOSCIENCES INC$319.8M24.3%9,003,418CommonSOLE
03770N101APGEAPOGEE THERAPEUTICS INC$154.6M11.8%2,048,647CommonSOLE
00773J202SYRESPYRE THERAPEUTICS INC$131.6M10.0%4,018,101CommonSOLE
92790C104VRDNVIRIDIAN THERAPEUTICS INC$121.8M9.27%3,914,458CommonSOLE
687604108ORKAORUKA THERAPEUTICS INC$112.3M8.55%3,705,262CommonSOLE
252828108DNTHDIANTHUS THERAPEUTICS INC$88.1M6.70%2,137,191CommonSOLE
98937L105ZBIOZENAS BIOPHARMA INC$80.2M6.11%2,209,025CommonSOLE
670703107NUVLNUVALENT INC$73.2M5.57%727,563CommonSOLE
008064206JBIOJADE BIOSCIENCES INC$70.3M5.35%4,553,494CommonSOLE
29337E102ELVNENLIVEN THERAPEUTICS INC$57.2M4.35%3,711,444CommonSOLE
G52694109KNSAKINIKSA PHARMACEUTICALS INTL$54.4M4.14%1,319,688CommonSOLE
G2545C104CBIOCRESCENT BIOPHARMA INC.$32.6M2.48%2,747,866CommonSOLE
45719W205IKTINHIBIKASE THERAPEUTICS INC$17.7M1.35%8,625,000CommonSOLE

Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.