UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 18, 2020

SUNESIS PHARMACEUTICALS, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (650) 266-3500

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

 Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

As previously reported by Sunesis Pharmaceuticals, Inc., or the Company, it had received a written notice from the Nasdaq Stock Market LLC, or Nasdaq, indicating that the Company was not in compliance with Nasdaq Listing Rule 5550(a)(2), or the Rule, as the Company’s closing bid price for its common stock was below $1.00 per share for 30 consecutive business days.

On September 18, 2020, the Company received a letter from the Nasdaq Listing Qualifications Department notifying that the closing bid price of the Company’s common stock has been at or above the minimum $1.00 per share for ten consecutive days.  Accordingly, the Company had regained compliance with the Rule and the matter is now closed.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.