Company: SION
Filing Date: 2025-05-12
Form Type: 10-Q
Source: 0002036042-25-000016
Chunk: 450

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-05-12
Form: 10-Q
Item: Part II, Item 1A
Chunk 450
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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 it by reference.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIONNA THERAPEUTICS, INC.Date: May 12, 2025By:/s/Michael CloonanName:Michael Cloonan, M.B.A.Title:President and Chief Executive Officer(Principal Executive Officer)Date: May 12, 2025By:/s/Elena RidloffName:Elena Ridloff, C.F.A.Title:Chief Financial Officer and Head of Corporate Development(Principal Financial Officer and Principal Accounting Officer)

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