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OrbiMed Advisors LLC

SEC CIK
0001055951
Latest filing
Aug 14, 2026

SION holding history

Sionna Therapeutics, Inc. in every 13F filed by OrbiMed Advisors LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

SION overviewAll 13F holders of SIONFull Q2 2026 holdings

Shares (Q2 2026)
2,555,877
Value
$112.4M
% of portfolio
2.1%
Quarters held
6
Since Q1 2025
Holdings of SION by OrbiMed Advisors LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 20262,555,877$112.4M2.1%−974,825−27.6%ReducedHolders
Q1 20263,530,702$141.5M3.2%−30,953−0.9%ReducedHolders
Q4 20253,561,655$146.5M3.0%−143,304−3.9%ReducedHolders
Q3 20253,704,959$109.0M2.6%00.0%UnchangedHolders
Q2 20253,704,959$64.3M1.6%00.0%UnchangedHolders
Q1 20253,704,959$38.8M0.9%+3,704,959NewHolders