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Sionna Therapeutics, Inc.

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

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About this filing

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$3.57+8.8%Stored close · as of Nov 9, 2026

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

See the whole filing, with its images and exhibits
Contents

Table of Contents

Page No.
PART I
Item 1.Business10
Item 1A.Risk Factors58
Item 1B.Unresolved Staff Comments115
Item 1C.Cybersecurity115
Item 2.Properties115
Item 3.Legal Proceedings115
Item 4.Mine Safety Disclosures116
PART II
Item 5.Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities117
Item 6.[Reserved]118
Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations118
Item 7A.Quantitative and Qualitative Disclosures About Market Risk130
Item 8.Financial Statements and Supplementary DataF-1
Item 9.Changes in and Disagreements with Accountants On Accounting and Financial Disclosure120
Item 9A.Controls and Procedures120
Item 9B.Other Information121
Item 9C.Disclosure Regarding Foreign Jurisdictions that Prevent Inspections121
PART III
Item 10.Directors, Executive Officers and Corporate Governance122
Item 11.Executive Compensation122
Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters122
Item 13.Certain Relationships and Related Transactions, and Director Independence122
Item 14.Principal Accountant Fees and Services122
PART IV
Item 15.Exhibits and Financial Statement Schedules123
Signatures126
ContentsView on SEC.gov

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