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Sionna Therapeutics, Inc.

For the period ended Dec 31, 2025. Filed Mar 2, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 2, 2026

SION$3.70+3.6%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Item 3. Legal Proceedings

From time to time, we may become involved in legal proceedings arising from the ordinary course of business. We record a liability for such matters when it is probable that future losses will be incurred and that such losses can be reasonably estimated. Significant judgment by us is required to determine both probability and the estimated amount. Our management is currently not aware of any legal matters that could have a material effect on our financial position, results of operations or cash flows, nor are we aware of any governmental proceedings involving potential monetary sanctions of $300,000 or more.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.