Viking Global Investors Lp

13F Holdings History for Sionna Therapeutics, Inc. - Common Stock, $0.001 par value per share (SION)

Symbol: SION on Nasdaq
Investment type: Equity / Common Stock, $0.001 par value per share
Latest Disclosed Ownership: 2.95M shares
Security Ownership: 6.7%

Shares, Excluding Options vs Price

Value, Excluding Options

VIKING GLOBAL INVESTORS LP ownership in Sionna Therapeutics, Inc. Common Stock, $0.001 par value per share (SION)

2025-02-14 - VIKING GLOBAL INVESTORS LP has filed an SCHEDULE 13G form with the Securities and Exchange Commission (SEC) disclosing ownership of 2.95M shares of Sionna Therapeutics, Inc. Common Stock, $0.001 par value per share (SION). This represents 6.7% percent ownership of the company.

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filed at
VIKING GLOBAL INVESTORS LP	6.7%		$22.6M	2.95M			$7.66	13G	2/10/2025	14 Feb 2025 16:58:02

Holdings date	Option	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
6/30/2025		0.16%	+0.01%	$55.4M	3.2M	+242,427	+8.21%	$17.35	Q2 2025
3/31/2025		0.1%	+0.1%	$30.9M	2.95M	+2,952,754	NEW	$10.46	Q1 2025

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.