Company: SION
Filing Date: 2025-05-12
Form Type: 10-Q
Source: 0002036042-25-000016
Chunk: 199

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-05-12
Form: 10-Q
Item: Part II, Item 3
Chunk 199
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ated by reference to Exhibit 10.4 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-284352) filed on February 3, 2025).10.4#Senior Executive Cash Incentive Bonus Plan (Incorporated by reference to Exhibit 10.5 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-284352) filed on February 3, 2025).10.5#Severance and Change in Control Plan (Incorporated by reference to Exhibit 10.6 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-284352) filed on February 3, 2025).10.6#Non-Employee Director Compensation Policy (Incorporated by reference to Exhibit 10.7 of the Registrant’s Registration Statement on Form S-1/A (File No. 333-284352) filed on February 3, 2025).31.1*Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.31.2*Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.32.1*+Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.101.INSInline XBRL Instance Document101.SCHInline XBRL Taxonomy Extension Schema With Embedded Linkbase Documents104Cover Page Interactive Data File (embedded with the Inline XBRL document)

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*Filed herewith.

#Indicates a management contract or any compensatory plan, contract or arrangement.

+The certification furnished in Exhibit 32.1 hereto is deemed to be furnished with this Quarterly Report and will not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, except to the extent that the Registrant specifically incorporates