Sitio Royalties (STR) 10-Q 2021 Q1 Quarterly report

Exhibit 32.2

Certification of the

Chief Financial Officer

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 Falcon Minerals Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Bryan C. Gunderson, the Chief Financial Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 10, 2021

/s/ Bryan C. Gunderson

Bryan C. Gunderson

Chief Financial Officer