Company: SION
Filing Date: 2025-04-29
Form Type: DEF 14A
Source: 0001193125-25-101830
Chunk: 55

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-04-29
Form: DEF 14A
Chunk 55
---
    60,000 |     | $        |  1,080,000 |
| Entities affiliated with OrbiMed(4)       |     |           |   550,000 |     | $        |  9,900,000 |
| Sionna Aggregator, LP(5)                  |     |           |   550,000 |     | $        |  9,900,000 |

| (1) | Entities affiliated with TPG Growth hold five percent or more of our capital stock. Lucian Iancovici, M.D., a member of our board of directors, is a managing director at TPG Growth. |

| (2) | Entities affiliated with RA Capital hold five percent or more of our capital stock. Joshua Resnick, M.D., M.B.A., a member of our board of directors, is a senior managing director at RA Capital. |

| (3) | Entities affiliated with Atlas Venture hold five percent or more of our capital stock. Bruce Booth, D.Phil., a member of our board of directors, is a general partner at Atlas Venture. |

| (4) | Entities affiliated with OrbiMed hold five percent or more of our capital stock. Peter A. Thompson, M.D., a member of our board of directors, is a member at OrbiMed. |

| (5) | Sionna Aggregator, LP holds five percent or more of our capital stock. Sionna Aggregator, LP is an affiliate of Enavate Sciences. H. Edward Fleming, Jr., M.D., a member of our board of directors, is an executive vice president of commercialization at Enavate Sciences. |

Employment Arrangements We have entered into employment agreements with certain of our NEOs, and granted stock options to our NEOs and certain of our directors, as more fully described in “ Executive Compensation” and “ Director Compensation.” Agreements with Our Stockholders Investors’ Rights Agreement In March 2024, we entered into a third amended and restated investors’ rights agreement (the “investors’ rights agreement”) with certain holders of more than 5% of our outstanding capital stock. This investors’ rights agreement provides certain holders of our preferred stock with certain rights, including certain registration rights with respect to the registrable securities held by them. Indemnification Agreements We have entered into agreements to indemnify our directors and executive officers. These agreements, among other things, require us to indemnify these