Exhibit 32.2
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report of Soleno Therapeutics, Inc. (the “Company”) on Form 10-Q for the fiscal quarter ended June 30, 2024, as filed with the Securities and Exchange Commission (the “Report”), James Mackaness, Chief Financial Officer of the Company does hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
Date: August 7, 2024
| /s/ James Mackaness | 
| James Mackaness | 
| Chief Financial Officer | 
| (principal financial and accounting officer) |