Company: SION
Filing Date: 2025-04-29
Form Type: DEF 14A
Source: 0001193125-25-101830
Chunk: 26

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-04-29
Form: DEF 14A
Chunk 26
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     | reviewing and approving the compensation arrangements with our other executive officers and certain other senior management; |

| • |     | reviewing and recommending to our board of directors the compensation paid to our directors; |

| • |     | reviewing and assessing the compensation disclosures to be included in our proxy statement or annual report on Form 10-K; |

| • |     | administering our equity incentive plans and other benefit programs; |

| • |     | administering the compensation recovery policy; |

| • |     | overseeing and administering our compensation and similar plans; and |

| • |     | reviewing and establishing general policies relating to compensation and benefits of our employees, including our overall compensation philosophy. |

The compensation committee may delegate authority to one or more of its members or our executive officers to carry out its responsibilities. Currently, the compensation committee has delegated to our Chief Executive Officer authority to grant certain equity-based awards to newly hired employees, subject to certain parameters approved by our compensation committee, including equity grant guidelines and limits regarding the size of the grants and the vesting schedules. Our compensation committee operates under a written charter that satisfies the applicable Nasdaq listing rules and is available at https://investors.sionnatx.com/corporate-governance/documents-charters. Pearl Meyer & Partners, LLC (“Pearl Meyer”) has served as the compensation committee’s independent compensation consultant since the compensation committee was formed in June 2024. Pearl Meyer reports directly to the compensation committee, and the compensation committee has the sole authority to hire, fire and direct the work of Pearl Meyer. Pearl Meyer provides various executive compensation services to the compensation committee, including an analysis of compensation related to base salary, target annual cash incentives and long-term equity incentives for executive officers and other senior management, and advice on evolving industry practices and market information. As part of its engagement, Pearl Meyer assists our compensation committee in developing an appropriate group of peer companies to help us determine the appropriate level of overall compensation for our executive officers and other senior management, as well as assess each separate element of compensation, with a goal of ensuring that the compensation we offer is competitive and fair. Pearl Meyer also provides the compensation committee with advice and analysis regarding compensation of non-employeedirectors. The compensation committee has assessed the independence of Pearl Meyer pursuant to SEC and Nasdaq rules and concluded that the work of Pearl Meyer for the compensation committee does not raise any conflict of interest. Nominating and Corporate Governance Committee Paul Clancy, M.B.A., Marcella Kuhlman Ruddy, M.D