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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: $11.51 B
Last 13-F Filed: Q2 2026
Concentration in top 10: 60.42%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
RYTMRHYTHM PHARMACEUTICALS INC5.75%6,666,837$740,218,912No Change$111.0313F
PCVXVAXCYTE INC5.18%11,474,599$667,018,440No Change$58.1313F
SIONSIONNA THERAPEUTICS INC3.39%9,905,045$435,722,930No Change$43.9913F
NAMSNEWAMSTERDAM PHARMA CO NV2.52%9,550,191$323,655,973No Change$33.8913F
BCAXBICARA THERAPEUTICS INC1.67%7,255,993$215,430,432No Change$29.6913F
MLYSMINERALYS THERAPEUTICS INC1.61%7,692,750$207,550,395No Change$26.9813F
IRONDISC MEDICINE INC1.39%2,450,221$179,209,164No Change$73.1413F
SGPSPYGLASS PHARMA INC1.39%8,021,117$178,550,064No Change$22.2613F
JANXJANUX THERAPEUTICS INC1.34%11,189,693$171,873,684No Change$15.3613F
TSHATAYSHA GENE THERAPIES INC1.25%23,555,648$160,413,963No Change$6.8113F
BCRXBIOCRYST PHARMACEUTICALS INC1.23%15,827,186$158,271,860No Change$1013F
WVEWAVE LIFE SCIENCES LTD1.22%26,975,505$156,727,684No Change$5.8113F
SPRYARS PHARMACEUTICALS INC0.68%10,860,977$86,996,426No Change$8.0113F
JBIOJADE BIOSCIENCES INC0.63%3,671,083$81,571,464No Change$22.2213F
LBRXLB PHARMACEUTICALS INC0.56%2,208,604$71,680,243No Change$32.4613F
FDMT4D MOLECULAR THERAPEUTICS IN0.52%5,049,779$67,162,061No Change$13.313F
MNPRMONOPAR THERAPEUTICS INC0.48%667,207$61,776,696No Change$92.5913F
ABOSACUMEN PHARMACEUTICALS INC0.44%20,992,669$56,050,426No Change$2.6713F
EVMNEVOMMUNE INC0.36%3,494,638$46,443,739No Change$13.2913F
IPSCCENTURY THERAPEUTICS INC0.34%17,754,430$43,498,354No Change$2.4513F
CCCCC4 THERAPEUTICS INC0.29%8,000,000$37,360,000No Change$4.6713F
MIRMMIRUM PHARMACEUTICALS INC0.29%318,554$37,293,117No Change$117.0713F
PEPGPEPGEN INC0.28%20,064,545$36,116,181No Change$1.813F
NKTXNKARTA INC0.24%10,805,129$30,578,515No Change$2.8313F
AVRANTERIS TECHNOLOGIES GLOBAL0.23%3,000,000$29,550,000No Change$9.8513F
ASMBASSEMBLY BIOSCIENCES INC0.22%1,020,410$28,040,867No Change$27.4813F
ALXOALX ONCOLOGY HOLDINGS INC0.21%13,011,849$26,934,527No Change$2.0713F
BNTCBENITEC BIOPHARMA INC0.19%1,850,000$24,753,000No Change$13.3813F
LENZLENZ THERAPEUTICS INC0.18%4,178,823$23,735,715No Change$5.6813F
LXEOLEXEO THERAPEUTICS INC0.18%5,000,000$23,275,000No Change$4.6613F
KPTIKARYOPHARM THERAPEUTICS INC0.15%1,917,354$18,732,549No Change$9.7713F
DRUGBRIGHT MINDS BIOSCIENCES INC0.14%265,000$18,603,000No Change$70.213F
OKURONKURE THERAPEUTICS INC-A0.14%3,998,333$18,232,398No Change$4.5613F
PALIPALISADE BIO INC0.12%7,124,116$14,889,402No Change$2.0913F
HLXCHELIX ACQUISITION CORP-CL A0.10%1,250,000$13,300,000No Change$10.6413F
EQEQUILLIUM INC0.08%3,096,336$9,908,275No Change$3.213F
WAYWAYSTAR HOLDING CORP0.08%529,400$10,868,582No Change$20.5313F
MGNXMACROGENICS INC0.07%1,864,176$8,612,493No Change$4.6213F
PCSCPERCEPTIVE CAPITAL SOLUTIONS0.06%750,000$8,160,000No Change$10.8813F
NAMSWNEWAMSTERDAM PHARMA CO NV-270.06%333,333$7,123,326No Change$21.3713F
CRVSCORVUS PHARMACEUTICALS INC0.05%450,000$6,723,000No Change$14.9413F
RANIRANI THERAPEUTICS HOLDINGS-A0.05%8,500,000$6,463,400No Change$0.7613F