INSYS Therapeutics Issues Clarifying Statement

PHOENIX, AZ--(Marketwired - May 12, 2014) - Insys Therapeutics, Inc. (NASDAQ: INSY) today issued a clarifying statement regarding its Subsys® (fentanyl sublingual spray) product.

Insys takes patient safety very seriously and we are committed to working with physicians to help ensure the proper prescribing and use of our products.

In terms of our business, we have continually expanded our commercial organization since launch due to the success of Subsys in treating break through cancer pain in opioid tolerant cancer patients who are 18 years or older. As such, we have expanded our prescriber base and for 2014 year-to-date, no single physician has written more than 5% of total Subsys prescriptions.

Based on recent activity, we feel it is appropriate to summarize and address some of the important items regarding Subsys. Subsys is governed by the Transmucosal Immediate Release Fentanyl (“TIRF”) Risk Evaluation and Mitigation Strategy (“REMS”) Access program, which was approved and launched by the FDA in March 2012. lnsys began commercializing Subsys on March 26, 2012 after the implementation of this TIRF-REMS program.

This TIRF-REMS program is designed to ensure informed risk-benefit decisions before initiating treatment and appropriate use of TIRF medicines. The purpose of the TIRF-REMS program is to mitigate the risk of misuse, abuse, addiction, overdose and serious complications due to medication errors with the use of TIRF medicines. Subsys can only be prescribed after physicians have undergone training on the risks and benefits of such products and products can only be dispensed via pharmacies who are REMS enrolled. Additionally, all patients and physicians are required to sign a prescriber patient agreement form as part of this process. Insys continues to support the TIRF-REMS program that was co-developed with other participant companies. More information regarding the TIRF-REMS program can be found at www.tirfremsaccess.com.

Insys does not sell directly to physicians. lnsys only sells Subsys through DEA approved wholesalers who monitor and track prescribing activity for this TIRF class of drugs and all opioids. Insys remains committed to our compliance program and protocols in place that are designed to ensure our sales and marketing practices comply with applicable laws.

About Insys Therapeutics, Inc.
Insys Therapeutics is a specialty pharmaceutical company that develops and commercializes innovative products for supportive care of cancer and pain patients. Using its proprietary sublingual spray technology and its capability to develop pharmaceutical cannabinoids, the company addresses the clinical shortcomings of existing commercial products. The company currently markets two products, Subsys, which is sublingual Fentanyl spray for break through cancer pain, and a generic version of Dronabinol (THC) capsules. The company plans to file a New Drug Application (NDA) for an oral liquid formulation of Dronabinol in the second half of 2014 and believes it is a clinically superior product to current Dronabinol capsules. The company is developing a pipeline of sublingual sprays, as well as pharmaceutical CBD.

Forward-Looking Statements
This press release contains forward-looking statements including the statements related to plans to file a New Drug Application (NDA) for an oral liquid formulation of Dronabinol in the second half of 2014, the Company’s belief that this oral liquid formulation of Dronabinol is a clinically superior product to current Dronabinol capsules and the Company’s statement regard a pipeline of sublingual sprays, as well as pharmaceutical CBD. These forward-looking statements are based on management’s expectations and assumptions as of the date of this press release, and actual results may differ materially from those in these forward-looking statements as a result of various factors, many of which are beyond our control. For a description of these risks facing the Company, please see the risk factors described in our filings with the United States Securities and Exchange Commission, including those factors discussed under the caption “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2013 and any subsequent updates that may occur in our Quarterly Reports on Form 10-Q. Forward-looking statements speak only as of the date of this press release and we undertake no obligation to update or revise these statements, except as may be required by law.