Company: SION
Filing Date: 2025-04-29
Form Type: DEF 14A
Source: 0001193125-25-101830
Chunk: 42

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-04-29
Form: DEF 14A
Chunk 42
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 under Section 501(a) of the Code. As a tax-qualified retirement plan, contributions to our 401(k) plan and earnings and matching amounts on those contributions are not taxable to the employees until distributed from our 401(k) plan. We did not provide matching or discretionary contributions under the 401(k) plan during the fiscal year ended December 31, 2024. We believe that providing a vehicle for tax-deferred retirement savings though our 401(k) plan adds to the overall desirability of our executive compensation package and further incentivizes our employees, including our NEOs, in accordance with our compensation policies. Other than the 401(k) plan, we do not provide any qualified or non-qualified retirement or deferred compensation benefits to our employees, including our NEOs.

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**Perquisites or Personal Benefits

We did not provide perquisites or personal benefits to our NEOs during the fiscal year ended December 31, 2024.

Executive Employment Arrangements

We have entered into an offer letter with each of our NEOs in connection with their employment with us, which sets forth the terms and conditions of each NEO’s employment. Each of Mr. Cloonan, Ms. Ridloff and Dr. McKee has entered into a standard employee confidentiality, assignment and nonsolicitation agreement, pursuant to which each NEO has agreed to covenants relating to confidentiality and assignment of inventions, as well as covenants not to solicit certain of our service providers and customers during the NEO’s employment and for one year after termination of employment. Dr. McKee has also agreed to a covenant not to compete during her employment and for one year after termination of employment.

Offer Letters in Place for Our NEOs

Michael Cloonan, M.B.A.

In March 2021, we entered into an offer letter with Mr. Cloonan (the “Cloonan Offer Letter”). Under the Cloonan Offer Letter, Mr. Cloonan is entitled to receive an annual base salary (which has subsequently been increased as described above), an annual bonus opportunity, and an initial equity grant consisting of 547,343 shares of restricted stock, which vested as to 25% on the first anniversary following Mr. Cloonan’s start date and vests as to the remaining 75% in 36 equal monthly installments thereafter, subject to Mr. Cloonan’s continued service with us through each applicable vesting date; provided that, the vesting of such