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) January 25, 2018

EVOFEM BIOSCIENCES, INC.

(Exact name of registrant as specified in its charter)

12400 High Bluff Drive, Suite 600

San Diego, CA 92130

(Address of Principal Executive Offices and Zip Code)

Registrant’s telephone number, including area code (858) 550-1900

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 (see General Instruction A.2. below):

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.  ☒

On January 19, 2018, the Audit Committee of the Board of Directors of Evofem Biosciences, Inc. (the “Audit Committee”), a Delaware corporation formerly known as Neothetics, Inc. (the “Company”), approved the dismissal of Ernst & Young LLP (“Ernst & Young”) as the Company’s independent registered public accounting firm, effective upon Ernst & Young’s completion of its audit services for the Company’s financial statements for the fiscal year ended December 31, 2017.

On January 19, 2018, the Audit Committee appointed Deloitte & Touche LLP (“Deloitte”) as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2018.

The reports of Ernst & Young on the Company’s financial statements for each of the two fiscal years ended December 31, 2016 and December 31, 2015 did not contain an adverse opinion or a disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope or accounting principles.

In connection with the audits of the Company’s financial statements for each of the two fiscal years ended December 31, 2016 and December 31, 2015, and in the subsequent interim period through January 19, 2018, there were no disagreements (as that term is defined in Item 304(a)(1)(iv) of Regulation S-K and related instructions) with Ernst & Young on any matters of accounting principles or practices, financial statement disclosure or auditing scope and procedures which, if not resolved to the satisfaction of Ernst & Young, would have caused Ernst & Young to make reference to the matter in their reports

The Company provided Ernst & Young with a copy of the disclosures it is making in this Current Report on Form 8-K and requested that Ernst & Young furnish the Company with a letter addressed to the SEC stating whether it agrees with the statements contained herein.

A copy of Ernst & Young’s letter, dated January 25, 2018, is filed as Exhibit 16.1 to this Current Report on Form 8-K.

During the years ended December 31, 2016 and 2015, and the subsequent interim period through January 19, 2018, neither the Company nor anyone on its behalf consulted with Deloitte regarding either (i) the application of accounting principles to a specific transaction, completed or proposed, or the type of audit opinion that might be rendered on the Company’s financial statements, and neither a written report nor oral advice was provided to the Company that Deloitte concluded was an important factor considered by the Company in reaching a decision as to any accounting, auditing or financial reporting issue or (ii) any matter that was either the subject of a disagreement (as defined in Item 304(a)(1)(iv) of Regulation S-K and the related instructions) or a reportable event (as described in Item 304(a)(1)(v) of Regulation S-K).

(d) Exhibits.

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.