Harold Edward Fleming - 12 Jun 2025 Form 4 Insider Report for Sionna Therapeutics, Inc. (SION)

Role
Director
Signature
Jennifer Fitzpatrick, Attorney-in-Fact
Issuer symbol
SION
Transactions as of
12 Jun 2025
Net transactions value
$0
Form type
4
Filing time
16 Jun 2025, 17:07:11 UTC
Previous filing
12 Jun 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Fleming Harold Edward Director C/O SIONNA THERAPEUTICS, INC., 21 HICKORY DRIVE, SUITE 500, WALTHAM Jennifer Fitzpatrick, Attorney-in-Fact 16 Jun 2025 0001857250

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
transaction SION Non-Qualified Stock Option (right to buy) Award $0 +19,959 $0.000000 19,959 12 Jun 2025 Common Stock 19,959 $16.99 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Reporting Person has agreed to receive and hold for the benefit of Enavate Sciences, LP, any securities granted to him for his service as a director on the Issuer's board of directors. As such, the Reporting Person disclaims beneficial ownership of, and all right, title and interest in, the option and the shares issuable upon exercise thereof.
F2 This option vests in full upon the earlier of June 12, 2026 or the date of the next annual meeting of Sionna Therapeutics, Inc., subject to the Reporting Person's continued service on such vesting date.