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
For the month of April 2018
Commission File Number: 1-15256
_____________________
OI S.A.
(Exact Name as Specified in its Charter)
N/A
(Translation of registrant’s name into English)
Rua General Polidoro, No. 99, 5th floor/part – Botafogo
22280-001 Rio de
Janeiro, RJ
Federative Republic of Brazil
(Address of principal executive offices)
(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: ý
Form
40-F: o
(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)):
Yes: o
No: ý
(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)):
Yes: o No: ý
(Indicate by check mark whether the
registrant by furnishing the information contained in this Form, the Registrant
is also thereby furnishing the information to the Commission pursuant to Rule
12g3-2(b) under the Securities Exchange Act of 1934.)
Yes:
o No: ý
If “Yes” is
marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2(b):
EXHIBIT INDEX
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.
Date: April 5, 2018
OI S.A. – In Judicial Reorganization
By: /s/ Carlos Augusto Machado Pereira de Almeida Brandão
Name: Carlos Augusto Machado Pereira de Almeida Brandão
Title: Chief Financial Officer and Investor Relations Officer