UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the Month of May 2017

Commission File Number: 001-37993

OBSEVA SA

(Translation of registrant’s name into English)

Chemin des Aulx, 12

1228 Plan-les-Ouates

Geneva, Switzerland

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:   ☒     Form  20-F   ☐     Form 40-F

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ☐

INCORPORATION BY REFERENCE

Exhibits 99.1 and 99.2 to this Report on Form 6-K shall be deemed to be incorporated by reference into the registration statement on Form S-8 (Registration Number 333-216170) of ObsEva SA and to be a part thereof from the date on which this report is filed, to the extent not superseded by documents or reports subsequently filed or furnished.

Exhibit 99.3 to this Report on Form 6-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act.

RISK FACTORS

The risk factors set forth in the discussion of material risks in Item 3.D of our Annual Report on Form 20-F for the fiscal year ended December 31, 2016 are incorporated herein. Additional risks and uncertainties not currently known to us, or that we currently deem to be immaterial, also may affect our business, financial condition and/or future operating results.

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, thereunto duly authorized.

	ObsEva SA
Date: May 18, 2017	By:	/s/ Ernest Loumaye
		Name	Ernest Loumaye
		Title:	Chief Executive Officer

EXHIBIT INDEX

Exhibit No.	Description
99.1	Unaudited Consolidated Interim Financial Statements
99.2	Management’s Discussion and Analysis of Financial Condition and Results of Operations
99.3	Press Release dated May 18, 2017