EXHIBIT 32.2

CERTIFICATION OF THE PRINCIPAL FINANCIAL OFFICER PURSUANT TO RULE 13a-14(b) OF THE EXCHANGE ACT AND 18 U.S.C. SECTION 1350

In connection with the Quarterly Report on Form 10-Q of Curis, Inc. (the “Company”) for the period ended March 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, William Steinkrauss, Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; 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 12, 2021	/S/ WILLIAM STEINKRAUSS
		William Steinkrauss
		Chief Financial Officer
		(Principal Financial Officer)