Company: SION
Filing Date: 2025-01-17
Form Type: S-1
Source: 0001193125-25-008474
Chunk: 361

Company: Sionna Therapeutics, Inc.
Filing Date: 2025-01-17
Form: S-1
Chunk 361
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 in these transactions. Each of the recipients of securities in these transactions was an accredited investor within the meaning of Rule 501 of Regulation D under the Securities Act and had adequate access, through employment, business or other relationships, to information about us. No underwriters were involved in these transactions. (b) Grants and Exercises of Stock Options Since January 1, 2021, we have granted to certain of our directors, employees and consultants options to purchase 6,154,553 shares of our common stock at a $3.94 per share weighted average exercise price under the 2020 Plan. Since January 1, 2021, 285,371 shares of common stock have been issued upon the exercise of stock options pursuant to the 2020 Plan. Since January 1, 2021, 851,860 stock options previously issued pursuant to the 2020 Plan have been forfeited. The offers, sales and issuances of the securities described above were deemed to be exempt from registration under Rule 701 promulgated under the Securities Act as transactions under compensatory benefit plans and contracts relating to compensation, or under Section 4(a)(2) of the Securities Act as a transaction by an issuer not involving a public offering. The recipients of such securities were our directors, employees or bona fide consultants and received the securities under our equity incentive plans. Appropriate legends were affixed to the securities issued in these transactions. Each of the recipients of securities in these transactions had adequate access, through employment, business or other relationships, to information about us. Item 16. Exhibits and Financial Statement Schedules.

| (a) | Exhibits. |

| Exhibit 
 Number  |     | Description                                                                                                                                       |
| 1.1*    |     | Form of Underwriting Agreement.                                                                                                                   |
| 3.1     |     | Fourth Amended and Restated Certificate of Incorporation, as amended and currently in effect.                                                     |
| 3.2*    |     | Form of Fifth Amended and Restated Certificate of Incorporation, to be in effect immediately prior to the completion of this offering.            |
| 3.3     |     | Bylaws, as currently in effect.                                                                                                                   |
| 3.4*    |     | Form of Amended and Restated Bylaws, to be in effect as of the effectiveness of the registration statement of which this prospectus forms a part. |
| 4.1     |     | Specimen Common Stock Certificate