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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
PBLSParabilis Medicines, Inc.6.77%29,177,964$868,627,988244,5930.85%Form 4
TYRATYRA BIOSCIENCES, INC.3.13%14,130,492$359,338,4121,931,86715.84%13D
CLYMClimb Bio, Inc.2.35%23,249,186$299,914,49911,948,247105.73%13D
ARTVArtiva Biotherapeutics, Inc.1.44%18,489,293$183,598,679533,6512.97%Form 4
SLDBSOLID BIOSCIENCES INC0.93%12,036,126$120,240,8992,696,14828.87%$9.9913F
ZLABZAI LAB LTD-ADR0.85%5,743,533$109,127,12736,2710.64%$1913F
VORVor Biopharma Inc.0.69%4,501,882$88,912,1702,099,78787.41%Form 4
XNCRXENCOR INC0.66%5,274,274$84,915,811377,0377.7%$16.113F
ACRSACLARIS THERAPEUTICS INC0.52%12,723,026$67,304,8085,918,95486.99%$5.2913F
DMRADAMORA THERAPEUTICS INC0.49%2,399,702$62,416,2493920.02%$26.0113F
RZLTREZOLUTE INC0.38%9,445,039$49,114,203265,0392.89%$5.213F
BIOABIOAGE LABS INC0.32%1,671,648$40,972,09221,0001.27%$24.5113F
SABSSAB Biotherapeutics, Inc.0.31%9,609,852$36,997,9305,208,352118.33%13D
ACRVACRIVON THERAPEUTICS INC0.17%12,229,396$21,768,3253,888,88846.63%$1.7813F
CAPRCapricor Therapeutics, Inc.0.17%3,014,183$21,099,2811,506,33999.90%13G
AVTXAVALO THERAPEUTICS INC0.14%1,000,000$18,480,000337,03250.84%$18.4813F