Delcath Systems (DCTH) 10-Q 2017 Q3 Quarterly report

Exhibit 32.1

DELCATH SYSTEMS, INC.

PRINCIPAL EXECUTIVE OFFICER’S CERTIFICATION

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of DELCATH SYSTEMS, INC. (the “Company”) on Form 10-Q for the period ended September 30, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jennifer K. Simpson, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 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), as applicable, 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.

November 14, 2017
	/s/ Jennifer K. Simpson
	Jennifer K. Simpson
	President and Chief Executive Officer
	(Principal Executive Officer)