Company: SION
Filing Date: 2025-04-29
Form Type: DEF 14A
Source: 0001193125-25-101830
Chunk: 66

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-04-29
Form: DEF 14A
Chunk 66
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 The Notice and Proxy Statement and Form 10-Kare available at www.proxyvote.com. V72400-P31556 SIONNA THERAPEUTICS, INC. ANNUAL MEETING OF STOCKHOLDERS JUNE 12, 2025 10:00 A.M., EDTTHIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORSThe stockholder(s) hereby appoint(s) Michael Cloonan, Elena Ridloff and Jennifer Fitzpatrick, or any of them, as proxies, each with the power to appoint (his/her) substitute, and hereby authorize(s) them to represent and to vote, as designated on the reverse side of this ballot, all of the shares of Common Stock of Sionna Therapeutics, Inc. that the stockholder(s) is/are entitled to vote at the Annual Meeting of Stockholders to be held on June 12, 2025, on 10:00 a.m., EDT, at www.virtualshareholdermeeting.com/SION2025, and any adjournment or postponement thereof. This proxy, when properly executed, will be voted in the manner directed herein. If no such direction is made, this proxy will be voted in accordance with the Board of Directors’ recommendations. The proxies are authorized to vote upon such other business as may properly come before the meeting. Continued and to be signed on reverse side