Exhibit 32.1 

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 accompanying report on Form 10–Q for the period ended September 30, 2019 of Harvest Oil & Gas Corp. (the “Company”) and filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Michael E. Mercer, Chief Executive Officer, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes–Oxley Act of 2002, that: 

•the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and 

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

Date: November 14, 2019	/s/ MICHAEL E. MERCER
	Michael E. Mercer
	Chief Executive Officer