Jennifer Fitzpatrick - Apr 1, 2025 Form 3 Insider Report for Sionna Therapeutics, Inc. (SION)

Role
Chief Legal Officer
Signature
/s/ Jennifer Fitzpatrick, Attorney-in-Fact
Stock symbol
SION
Transactions as of
Apr 1, 2025
Transactions value $
$0
Form type
3
Date filed
4/1/2025, 04:05 PM
Next filing
Sep 5, 2025
SEC
View on sec.gov

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding SION Stock Option (Right to Buy) Apr 1, 2025 Common Stock 147K $6.11 Direct F1
holding SION Stock Option (Right to Buy) Apr 1, 2025 Common Stock 121K $18.00 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 25% of the shares underlying this option shall vest on June 3, 2025, with the remainder vesting in thirty-six equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date.
F2 The shares underlying this option vest in forty-eight equal monthly installments following February 6, 2025, subject to the Reporting Person's continued service on each such vesting date.

Remarks:

Exhibit 24 - Power of Attorney.