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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: $9.44 B
Last 13-F Filed: Q1 2026
Concentration in top 10: 61.29%
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Stock Company % Portfolio Shares Held Market Value Change in Shares % Change Quarter End Price Source
ASNDASCENDIS PHARMA A/S - ADR19.52%10,281,496$2,351,686,580No Change$228.7313F
PCVXVAXCYTE INC5.53%11,474,599$666,788,948750,0006.99%$58.1113F
RYTMRHYTHM PHARMACEUTICALS INC4.81%6,666,837$579,814,814No Change$86.9713F
PBLSParabilis Medicines, Inc.4.34%26,285,093$525,701,86026,285,093NewForm 4
TYRATYRA BIOSCIENCES INC3.88%12,198,625$467,207,338No Change$38.313F
SIONSIONNA THERAPEUTICS INC3.30%9,905,045$397,093,254No Change$40.0913F
CLYMClimb Bio, Inc.3.08%23,249,186$299,914,49911,948,247105.73%13D
EWTXEDGEWISE THERAPEUTICS INC2.73%10,428,437$328,495,766No Change$31.513F
NAMSNEWAMSTERDAM PHARMA CO NV2.54%9,550,191$305,701,614No Change$32.0113F
WVEWAVE LIFE SCIENCES LTD.2.30%34,225,506$259,771,5917,250,00126.88%13D
NUVLNUVALENT INC-A2.16%2,534,145$259,623,155654,08834.79%$102.4513F
DNTHDIANTHUS THERAPEUTICS INC1.82%2,611,733$219,176,6331,000,00062.05%$83.9213F
MLYSMINERALYS THERAPEUTICS INC1.73%7,692,750$208,396,598369,0005.04%$27.0913F
SGPSPYGLASS PHARMA INC1.73%8,021,117$207,827,1418,021,117New$25.9113F
COAGHemab Therapeutics Holdings, Inc.1.68%7,808,628$195,059,5277,808,628NewForm 4
ARTVArtiva Biotherapeutics, Inc.1.43%18,137,650$162,331,9688,284,34884.08%Form 4
SEPNSEPTERNA INC1.40%6,995,858$168,110,468No Change$24.0313F
IRONDISC MEDICINE INC1.30%2,450,221$156,667,131474,08923.99%$63.9413F
JANXJANUX THERAPEUTICS INC1.29%11,189,693$155,536,733No Change$13.913F
BCRXBIOCRYST PHARMACEUTICALS INC1.25%15,827,186$150,674,811No Change$9.5213F
BCAXBICARA THERAPEUTICS INC1.20%7,255,993$144,321,701300,0004.31%$19.8913F
SLDBSOLID BIOSCIENCES INC.1.02%12,036,126$99,899,8462,696,14828.87%13D
PRAXPRAXIS PRECISION MEDICINES I1.00%373,787$120,430,434No Change$322.1913F
GHRSGH RESEARCH PLC0.90%7,676,697$107,934,360No Change$14.0613F
ZLABZAI LAB LTD-ADR0.89%5,707,262$107,353,5985,707,262New$18.8113F
TSHATAYSHA GENE THERAPIES INC0.87%23,555,648$105,293,747No Change$4.4713F
GERNGERON CORP0.79%63,771,366$95,019,335No Change$1.4913F
SPRYARS PHARMACEUTICALS INC0.72%10,860,977$87,213,645No Change$8.0313F
SRPTSAREPTA THERAPEUTICS INC0.70%3,902,596$84,920,4893,902,596New$21.7613F
SYRESPYRE THERAPEUTICS INC0.68%1,621,620$81,794,513No Change$50.4413F
EVMNEVOMMUNE INC0.67%3,494,638$80,341,72835,8681.04%$22.9913F
IKTInhibikase Therapeutics, Inc.0.54%25,000,000$51,000,00025,000,000New13G
SANASana Biotechnology, Inc.0.54%18,750,000$58,875,00018,750,000New13G
DMRADAMORA THERAPEUTICS INC0.52%2,399,310$62,142,1292,399,310New$25.913F
XNCRXENCOR INC0.49%4,897,237$59,060,6784,897,237New$12.0613F
LBRXLB PHARMACEUTICALS INC0.45%2,208,604$54,464,175No Change$24.6613F
JBIOJADE BIOSCIENCES INC0.43%3,671,083$51,578,716No Change$14.0513F
ABOSACUMEN PHARMACEUTICALS INC0.41%20,992,669$49,542,6996,060,60640.59%$2.3613F
FULCFULCRUM THERAPEUTICS INC0.39%6,053,960$46,433,873No Change$7.6713F
FDMT4D MOLECULAR THERAPEUTICS IN0.39%5,049,779$47,013,442-603,432-10.67%$9.3113F
CAPRCAPRICOR THERAPEUTICS INC0.38%1,507,844$45,838,458No Change$30.413F
ALTAltimmune, Inc.0.33%13,000,000$37,050,00013,000,000New13G
IPSCCENTURY THERAPEUTICS INC0.33%17,754,430$40,125,01217,754,430New$2.2613F
LENZLENZ THERAPEUTICS INC0.32%4,178,823$38,236,230No Change$9.1513F
OLMAOLEMA PHARMACEUTICALS INC0.32%2,600,000$38,766,000No Change$14.9113F
VORVor Biopharma Inc.0.31%2,402,095$37,881,038-3,002,903-55.56%Form 4
MNPRMONOPAR THERAPEUTICS INC0.30%667,207$36,556,272No Change$54.7913F
EDITEditas Medicine, Inc.0.29%8,889,000$31,733,7308,889,000New13G
PEPGPEPGEN INC0.29%20,064,545$35,514,245No Change$1.7713F
AGENAgenus Inc.0.28%4,344,772$26,590,0054,344,772New13G
PRLDPrelude Therapeutics Incorporated0.27%6,477,309$29,925,1686,477,309New13G
DSGNDESIGN THERAPEUTICS INC0.26%2,972,973$31,632,4331,511,592103.44%$10.6413F
ASMBASSEMBLY BIOSCIENCES INC0.24%1,020,410$28,316,378No Change$27.7513F
BIOABIOAGE LABS INC0.24%1,650,648$28,869,8341,650,648New$17.4913F
LXEOLEXEO THERAPEUTICS INC0.24%5,000,000$28,700,000No Change$5.7413F
MIRMMIRUM PHARMACEUTICALS INC0.24%318,554$29,428,019318,554New$92.3813F
RZLTREZOLUTE INC0.23%9,180,000$27,999,000No Change$3.0513F
ALXOALX ONCOLOGY HOLDINGS INC0.22%13,011,849$26,088,75713,011,849New$213F
ACRVACRIVON THERAPEUTICS, INC.0.22%12,284,906$24,201,2653,944,39847.29%13D
AKTSAKTIS ONCOLOGY INC0.22%1,503,084$26,890,1731,503,084New$17.8913F
QTTBQ32 Bio Inc.0.22%2,332,457$24,047,6322,332,457New13G
ACRSACLARIS THERAPEUTICS INC0.21%6,804,072$25,515,2706,804,072New$3.7513F
OVIDOVID THERAPEUTICS INC0.20%10,714,000$23,785,080No Change$2.2213F
NKTXNKARTA INC0.19%10,805,129$22,798,822No Change$2.1113F
GRALGRAIL INC0.18%428,266$22,132,787No Change$51.6813F
TVTXTRAVERE THERAPEUTICS INC0.18%746,841$22,188,646746,841New$29.7113F
CCCCC4 THERAPEUTICS INC0.17%8,000,000$21,040,000No Change$2.6313F
RLMDRELMADA THERAPEUTICS INC0.17%2,947,369$20,513,6882,947,369New$6.9613F
BNTCBENITEC BIOPHARMA INC0.16%1,850,000$19,702,500No Change$10.6513F
DRUGBRIGHT MINDS BIOSCIENCES INC0.16%265,000$19,337,050265,000New$72.9713F
STROSUTRO BIOPHARMA INC0.15%715,307$17,818,297715,307New$24.9113F
AVRANTERIS TECHNOLOGIES GLOBAL0.14%3,000,000$16,650,0003,000,000New$5.5513F
CTNMCONTINEUM THERAPEUTICS INC-A0.14%1,296,012$16,925,917-883,699-40.54%$13.0613F
INSPINSPIRE MEDICAL SYSTEMS INC0.14%325,663$16,797,698183,699129.4%$51.5813F
OKURONKURE THERAPEUTICS INC-A0.14%3,998,333$16,553,0993,998,333New$4.1413F
SABSSAB BIOTHERAPEUTICS INC0.14%4,401,500$16,857,745No Change$3.8313F
HNGEHINGE HEALTH INC-A0.12%364,613$14,059,477284,500355.12%$38.5613F
WGSGENEDX HOLDINGS CORP0.11%209,887$13,478,943151,843261.6%$64.2213F
WAYWAYSTAR HOLDING CORP0.11%529,400$12,763,834385,000266.62%$24.1113F
HLXCHELIX ACQUISITION CORP-CL A0.11%1,250,000$12,700,0001,250,000New$10.1613F
RNAATRIUM THERAPEUTICS INC0.10%864,102$11,553,044864,102New$13.3713F
PALIPALISADE BIO INC0.10%7,124,116$12,467,203No Change$1.7513F
KPTIKARYOPHARM THERAPEUTICS INC0.09%1,917,354$10,679,6621,917,354New$5.5713F
AVTXAVALO THERAPEUTICS INC0.08%662,968$9,898,112No Change$14.9313F
ACETADICET BIO INC0.07%1,182,624$8,053,669234,37524.72%$6.8113F
PCSCPERCEPTIVE CAPITAL SOLUTIONS0.07%750,000$8,227,500No Change$10.9713F
NAMSWNEWAMSTERDAM PHARMA CO NV-270.06%333,333$6,679,993No Change$20.0413F
CRVSCORVUS PHARMACEUTICALS INC0.05%450,000$6,583,500450,000New$14.6313F
EQEQUILLIUM INC0.05%3,096,336$6,192,6723,096,336New$213F
RANIRANI THERAPEUTICS HOLDINGS-A0.05%8,500,000$6,245,800No Change$0.7313F
MGNXMACROGENICS INC0.04%1,864,176$5,387,4691,864,176New$2.8913F
MPLTMAPLIGHT THERAPEUTICS INC0.04%248,294$5,047,817248,294New$20.3313F
JATTJATT II Acquisition Corp0.04%500,000$4,080,000500,000New13G
PTNPALATIN TECHNOLOGIES INC0.01%70,000$1,219,400No Change$17.4213F
HOWLWEREWOLF THERAPEUTICS, INC.0.00734%1,985,541$714,795-4,695,766-70.28%13D
IVVDINVIVYD INC-17,119,096Exited13F
ACLXARCELLX INC-1,267,156Exited13F
RNAAVIDITY BIOSCIENCES INC-8,641,031Exited13F
BLTEBELITE BIO INC - ADR-432,484Exited13F
CDTXCIDARA THERAPEUTICS INC-3,365,523Exited13F
HCATHEALTH CATALYST INC-793,749Exited13F
MDLNMEDLINE INC-CL A-335,000Exited13F
KIDSORTHOPEDIATRICS CORP-109,959Exited13F
PGNYPROGYNY INC-96,628Exited13F
QGENQIAGEN N.V.-43,976Exited13F