Company: SION
Filing Date: 2025-04-29
Form Type: DEF 14A
Source: 0001193125-25-101830
Chunk: 49

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-04-29
Form: DEF 14A
Chunk 49
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 pursuant to Section 280G of the Code. These payments and benefits may also subject an eligible participant, including the NEOs, to an excise tax under Section 4999 of the Code. If the payments or benefits payable in connection with a change in control would be subject to the excise tax imposed under Section 4999 of the Code, then those payments or benefits will be reduced if such reduction would result in a higher net after-tax benefit to the participant.

The New Severance and CIC Plan fully supersedes and replaces all previous severance and change in control plans, policies, arrangements, and agreements, except that if an Eligible Employee is party to a fully-executed offer letter, employment agreement, severance or change in control agreement with Sionna (each, an “Existing Employment Agreement”), e.g., the Severance and CIC Agreements described above, that, as of the New Severance and CIC Plan Effective Date, provides for more favorable terms or provisions than provided under such New Severance and CIC Plan, then the more favorable definition, term or provision, or relevant combination thereof, will be applicable for the benefit of the eligible employee; provided, however, that (i) there is no duplication of benefits; (ii) a more favorable definition of “cause” under an employee non-competition agreement shall not apply for purposes of “cause” as used in New Severance and CIC Plan, and (iii) the following provisions under any Existing Employment Agreement will continue to apply to any equity awards granted before the New Severance and CIC Plan Effective Date, but will not apply to any equity awards granted after the New Severance and CIC Plan Effective Date: (A) extending the time for exercising any stock-based awards beyond 3 months following a termination of service (other than due to death or disability), (B) providing for acceleration of vesting of unvested equity award(s) upon a termination of employment prior to a change in control or other sales transaction of Sionna; and/or (C) providing for “single trigger” acceleration of vesting of unvested equity award(s) upon a change in control or other sales transaction of Sionna.

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Outstanding Equity Awards at Fiscal 2024 Year-End The following table sets forth information concerning all outstanding equity awards held by our NEOs as of December 31, 2024.

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