Company: SION
Filing Date: 2025-02-07
Form Type: 424B4
Source: 0001193125-25-022709
Chunk: 225

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-02-07
Form: 424B4
Chunk 225
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 the operations of our partners. In the U.S., numerous federal and state laws and regulations, including data breach notification laws, health
information privacy and security laws and consumer protection laws and regulations govern the collection, use, disclosure, and protection of health-related and other personal information. In addition, certain foreign laws govern the privacy and
security of personal data, including health-related data. Privacy and security laws, regulations and other obligations are constantly evolving, may conflict with each other to complicate compliance.

Employees and Human Capital Resources

As of December 31,
2024, we had 35 full-time employees, of which 13 had M.D. or Ph.D. degrees. Within our workforce, 21 employees were engaged in research and development and 14 were engaged in business development, finance, legal and general management and
administration as of December 31, 2024. None of our employees are represented by labor unions or covered by collective bargaining agreements. We consider our relationship with our employees to be good.

Our human capital resources objectives include, as applicable, identifying, recruiting, retaining, incentivizing and integrating our existing and new
employees, advisors and consultants. The principal purposes of our equity incentive plans are to attract, retain and reward personnel through the granting of equity-based compensation awards in order to increase shareholder value and the success of
our company by motivating such individuals to perform to the best of their abilities and achieve our objectives.

We believe that our future success
largely depends upon our continued ability to attract and retain highly skilled employees. We provide our employees with competitive salaries and bonuses, opportunities for equity ownership, development programs that enable continued learning and
growth and a robust employment package that promotes well-being across all aspects of their lives, including health care, retirement planning and paid time off.

We believe that much of our success is rooted in the diversity of our teams and our commitment to inclusion. We value diversity at all levels and focus
on extending our diversity and inclusion initiatives across our entire workforce.

Facilities

Our corporate headquarters is located in Waltham, Massachusetts, where we lease and occupy approximately 24,051 square feet of laboratory and office
space at 21 Hickory Drive, Suite 500, Waltham, Massachusetts 02451. We sublease approximately 6,399 square feet of such laboratory and office space. The current term of our lease expires in November 2030.

We believe that our facilities are adequate for our current needs and for the foreseeable future. To meet the future needs of our