SION — SIONNA THERAPEUTICS INC

Ownership history in ORBIMED ADVISORS LLC  ·  4 quarters on record

This page tracks every 13F SEC filing in which ORBIMED ADVISORS LLC reported a position in SIONNA THERAPEUTICS INC (SION). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
2.99% (2025 Q4)
Avg. % of fund
2.02%
First filed
2025 Q1
Last filed
2025 Q4
Quarters held
4
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 REDUCED 3,561,655 -143,304 -3.9% 2.99% $146.5M $41.14
2025 Q3 UNCHANGED 3,704,959 — 0% 2.56% $109.0M $29.41
2025 Q2 UNCHANGED 3,704,959 — 0% 1.61% $64.3M $17.35
2025 Q1 INITIATED 3,704,959 — — 0.92% $38.8M $10.46
% of Fund (quarterly)    SION price (monthly, adj. close)

Other funds also holding SION

As of 2025 Q4 — sorted by position size

Atlas Venture Life Science Advisors, LLC 3Y 14.24% TPG GP A, LLC 3Y 10.33% RA CAPITAL MANAGEMENT, L.P. 3Y 7Y 4.17% SUPERSTRING CAPITAL MANAGEMENT LP 3.98% PERCEPTIVE ADVISORS LLC 3Y 7Y 0.86% Artia Global Partners LP 3Y 0.7% DEERFIELD MANAGEMENT COMPANY, L.P. 3Y 7Y 0.51% EVENTIDE ASSET MANAGEMENT, LLC 3Y 7Y 0.41% Soleus Capital Management, L.P. 3Y 0.41% Siren, L.L.C. 0.37%
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