Celyad Oncology (CLYYF) 6-K Celyad Reports Half Year 2019 Financial Results and Second Quarter Business Highlights

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE13a-16 OR15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the Month of August 2019

Commission File Number:001-37452

CELYAD SA

(Translation of registrant’s name into English)

Rue Edouard Belin 2

1435 Mont-Saint-Guibert, Belgium

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form20-F or Form40-F.

Form20-F  ☒            Form40-F  ☐

Indicate by check mark if the registrant is submitting the Form6-K in paper as permitted by RegulationS-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form6-K in paper as permitted by RegulationS-T Rule 101(b)(7):  ☐

Celyad SA

On August 22, 2019, Celyad SA (the “Company”) issued a press release announcing its financial and operating results for the first half of 2019. A copy of the Company’s press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

The information contained in this Current Report on Form6-K, including Exhibit 99.1, except for the quotes of Filippo Petti contained in Exhibit 99.1, is hereby incorporated by reference into the Company’s Registration Statements on FormsF-3 (FileNo. 333-220285) andS-8 (FileNo. 333-220737).

EXHIBITS

Exhibit	Description
99.1	Press release issued by the registrant on August 22, 2019
99.2	Interim Financial Report issued by the registrant on August 22, 2019

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.

	CELYAD SA
Date: August 23, 2019	By:	/s/ Filippo Petti
		Filippo Petti Chief Executive Officer and Financial Officer