Company: SION
Filing Date: 2025-02-03
Form Type: S-1/A
Source: 0001193125-25-018825
Chunk: 257

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-02-03
Form: S-1/A
Chunk 257
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 performance bonus in effect as of immediately prior to a change in control, as applicable) for each of our Executives (which includes the NEOs) and senior vice presidents and (C) if
the Eligible Employee elects to continue health and dental insurance coverage following such termination, an amount equal to the monthly employer contribution, based on the premiums as of the date of termination, that we would have made to provide
health insurance for the applicable executive if he or she had remained employed by us for up to (x) 12 months for our chief executive officer and (y) nine months for each of our Executives (which includes the NEOs other than the chief
executive officer) and for each of our senior vice presidents. The payments under (A) and (C), as applicable, will be paid in substantially equal installments in accordance with our payroll practice over 12 months for our chief executive
officer and nine months for each of our Executives (which includes the NEOs other

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than the chief executive officer) and each of our senior vice presidents, and the payments under (B) are payable upon the first installment of such payments in accordance with our payroll
practice.

The New Severance and CIC Plan will also provide that, at any time during the change in control period, upon a (i) termination by us
for any reason other than due to cause, death or disability or (ii) for Executives, resignation for good reason, an Eligible Employee will be entitled to receive, in lieu of the payments and benefits above and subject to the execution and
delivery of an effective and irrevocable release of claims in favor of the Company and continued compliance with all applicable restrictive covenants, (A) a lump sum cash amount equal to (x) 1.5x the sum of the base salary and the target bonus
for our chief executive officer, (y) 1x the sum of the base salary and the target bonus for each of our Executives (which includes the NEOs other than the chief executive officer) and for each of our senior vice presidents and (z) 0.75x the sum of
the base salary and the target bonus for our each of our vice presidents, (B) if the Eligible Employee elects to continue health and dental insurance coverage following such termination, an amount equal to the monthly employer contribution,
based on the premiums as of the date of termination, that we would have made