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RA CAPITAL MANAGEMENT, L.P.
RA CAPITAL MANAGEMENT, L.P.
SION
6 quarters
Position history for RA CAPITAL MANAGEMENT, L.P.'s holdings in SIONNA THERAPEUTICS INC
Yes. RA Capital Management holds 9,905,045 shares of SION (Sionna Therapeutics), worth $435.7M, as of its Q2 2026 13F filing. The share count is unchanged from Q1 2026. RA Capital Management has held SION in every 13F on record since Q1 2025, 6 quarterly filings. SION is 3.8% of RA Capital Management's reported 13F portfolio.
Current Value
$435.7M
Current Shares
9.9M
Total Value Change
+$326.5M
Total Shares Change
-540,277
Quarter-by-Quarter History