Insys Therapeutics (INSY) 10-K 2016 FY Annual report

 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

For purposes of Section 1350 of Chapter 63 of Title 18 of the United States Code, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned officers of Insys Therapeutics, Inc., a Delaware corporation (“Company”), does hereby certify, to such officer’s knowledge, that:

The Annual Report on Form 10-K for the fiscal year ended December 31, 2016 (“Form 10-K”) of the Company 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 Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: March 31, 2017	/s/ Dr. Santosh Vetticaden
	Dr. Santosh Vetticaden
	Interim Chief Executive Officer and Chief Medical Officer

Dated: March 31, 2017	/s/ Darryl S. Baker
	Darryl S. Baker
	Chief Financial Officer