ESTR Estre Ambiental Inc

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

of the Securities Exchange Act of 1934

February 25, 2019

Commission File Number: 001-38333

ESTRE AMBIENTAL, INC.

4509, Avenida Brigadeiro Faria Lima Avenue, 8th Floor

Vila Olĺmpia

São Paulo

04538-133—SP

Brazil

+55 11 2124 3100

(Address, Including ZIP Code, and Telephone Number,

Including Area Code, of Registrant’s Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover 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):  ☐

On February 25, 2019, Estre Ambiental, Inc. (the “Company”) issued a press release announcing the election of Dr. Gesner Oliveira as Chairman of the Board of Directors to replace Andreas Y. Gruson, who has resigned as Chairman of the Board of Directors as of February 28, 2019. A copy of the press release is attached as Exhibit 99.1 hereto and incorporated herein by reference.