On June 3, 2019, CTI BioPharma Corp. (the “Company”) received written notice from The Nasdaq Stock Market LLC (“Nasdaq”) indicating that the Company is not in compliance with the $1.00 minimum bid price requirement for continued listing on The Nasdaq Capital Market, as set forth in Nasdaq Listing Rule 5550(a)(2). In accordance with Nasdaq Listing Rule 5810(c)(3)(A), the Company has a period of 180 calendar days, or until December 2, 2019, to regain compliance with the minimum bid price requirement. To regain compliance, the closing bid price of the Company’s common stock must meet or exceed $1.00 per share for a minimum of ten consecutive business days during this 180-day period.

If the Company does not regain compliance with the minimum bid price requirement by December 2, 2019, Nasdaq may grant the Company a second period of 180 calendar days to regain compliance. To qualify for this additional compliance period, the Company would be required to meet the continued listing requirement for market value of publicly held shares and all other initial listing standards for The Nasdaq Capital Market, other than the minimum bid price requirement. In addition, the Company would also be required to notify Nasdaq of its intent to cure the minimum bid price deficiency, which may include, if necessary, implementing a reverse stock split.

If the Company does not regain compliance within the allotted compliance periods, including any extensions that may be granted by Nasdaq, Nasdaq will provide notice that the Company’s common stock will be subject to delisting. The Company would then be entitled to appeal that determination to a Nasdaq hearings panel.

The notification has no immediate effect on the listing of the Company’s common stock on The Nasdaq Capital Market. The Company intends to monitor the closing bid price of its common stock and consider implementing available options to regain compliance with the minimum bid price requirement.

About CTI BIOPHARMA CORP. (NASDAQ:CTIC)

CTI BioPharma Corp. (CTI) is a biopharmaceutical company focused on the acquisition, development and commercialization of targeted therapies covering a spectrum of blood-related cancers to patients and healthcare providers. The Company is primarily focused on commercializing PIXUVRI in select countries in the European Union, for multiply relapsed or refractory aggressive B-cell non-Hodgkin lymphoma (NHL). It is also engaged in evaluating pacritinib for the treatment of adult patients with myelofibrosis. Its earlier stage product candidate, tosedostat, is an oral, once-daily aminopeptidase inhibitor that has demonstrated responses in patients with acute myeloid leukemia (AML). It also evaluates its pipeline candidate paclitaxel poliglumex (Opaxio), which targets solid tumors. It is evaluating Opaxio through cooperative group sponsored trials and investigator-sponsored trials (ISTs), such as the ongoing maintenance therapy trial in patients with ovarian cancer.