SION — Sionna Therapeutics Inc

Ownership history in TPG GP A, LLC  ·  4 quarters on record

This page tracks every 13F SEC filing in which TPG GP A, 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
10.8% (2025 Q3)
Avg. % of fund
7.19%
First filed
2025 Q1
Last filed
2025 Q4
Quarters held
4
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 UNCHANGED 6,744,962 — 0% 10.33% $277.5M $41.14
2025 Q3 UNCHANGED 6,744,962 — 0% 10.80% $198.4M $29.41
2025 Q2 ADDED 6,744,962 +60,000 +0.9% 6.24% $117.0M $17.35
2025 Q1 INITIATED 6,684,962 — — 1.38% $69.9M $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% RA CAPITAL MANAGEMENT, L.P. 3Y 7Y 4.17% SUPERSTRING CAPITAL MANAGEMENT LP 3.98% ORBIMED ADVISORS LLC 3Y 7Y 2.99% 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%
← Back to TPG GP A, LLC Holdings