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  • RA CAPITAL MANAGEMENT, L.P. (Data extracted from 13F, 13D, 13G and Form 4)

RA CAPITAL MANAGEMENT, L.P.

AUM: $11.32 B
13-F Portfolio Value: $8.12 B
Last 13-F Filed: Q3 2025
Concentration in top 10: 63.91%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
ASNDASCENDIS PHARMA A/S - ADR25.10%10,281,496$2,044,064,220No Change$198.8113F
PCVXVAXCYTE INC5.29%11,965,991$431,014,996No Change$36.0213F
NAMSNEWAMSTERDAM PHARMA CO NV3.54%10,138,938$288,351,397No Change$28.4413F
JANXJANUX THERAPEUTICS INC3.36%11,189,693$273,476,097No Change$24.4413F
ACLXARCELLX INC3.06%3,036,527$249,298,867No Change$82.113F
TYRATYRA BIOSCIENCES INC2.10%12,198,625$170,658,764No Change$13.9913F
SEPNSEPTERNA INC1.62%6,995,858$131,592,089No Change$18.8113F
DNTHDIANTHUS THERAPEUTICS INC1.39%2,866,733$112,805,944No Change$39.3513F
BCAXBICARA THERAPEUTICS INC1.35%6,955,993$109,835,129No Change$15.7913F
GHRSGH RESEARCH PLC1.35%7,676,697$109,776,767No Change$14.313F
SPRYARS PHARMACEUTICALS INC1.34%10,860,977$109,152,819No Change$10.0513F
IRONDISC MEDICINE INC1.28%1,577,106$104,215,164No Change$66.0813F
GERNGERON CORP1.02%60,379,366$82,719,731No Change$1.3713F
TSHATAYSHA GENE THERAPIES INC0.95%23,555,648$77,026,969No Change$3.2713F
CLYMCLIMB BIO INC0.78%31,419,267$63,152,727No Change$2.0113F
GPCRSTRUCTURE THERAPEUTICS INC0.52%1,517,418$42,487,704No Change$2813F
MNPRMONOPAR THERAPEUTICS INC0.51%511,207$41,750,276No Change$81.6713F
FDMT4D MOLECULAR THERAPEUTICS IN0.49%4,563,211$39,654,304No Change$8.6913F
MTSRMETSERA INC0.43%675,525$35,350,223No Change$52.3313F
ARTVARTIVA BIOTHERAPEUTICS INC0.35%9,853,302$28,278,977No Change$2.8713F
TVTXTRAVERE THERAPEUTICS INC0.34%1,150,000$27,485,000No Change$23.913F
ABOSACUMEN PHARMACEUTICALS INC0.31%14,932,063$25,533,828No Change$1.7113F
NKTXNKARTA INC0.27%10,805,129$22,366,617No Change$2.0713F
LRMRLARIMAR THERAPEUTICS INC0.24%6,045,351$19,526,484No Change$3.2313F
TNGXTANGO THERAPEUTICS INC0.21%2,000,000$16,800,000No Change$8.413F
ACRVACRIVON THERAPEUTICS INC0.19%8,340,508$15,096,319No Change$1.8113F
RCUSARCUS BIOSCIENCES INC0.19%1,136,364$15,454,550No Change$13.613F
ELDNELEDON PHARMACEUTICALS INC0.11%3,566,338$9,236,815No Change$2.5913F
PCSCPerceptive Capital Solutions Corp0.11%750,000$9,150,000No Change13D
CTMXCYTOMX THERAPEUTICS INC0.10%2,661,331$8,489,646No Change$3.1913F
SRZNSURROZEN INC0.10%602,626$7,764,836No Change$12.8813F
HOWLWEREWOLF THERAPEUTICS, INC.0.10%6,681,307$8,084,381No Change13D
ACETADICET BIO INC0.08%7,541,000$6,109,718No Change$0.8113F
WGSGENEDX HOLDINGS CORP0.08%58,044$6,253,661No Change$107.7413F
NAMSWNEWAMSTERDAM PHARMA CO NV-270.07%333,333$5,703,328No Change$17.1113F
IFRXINFLARX NV0.03%1,973,233$2,644,132No Change$1.3413F