Form 6-K OI S.A. For: Mar 31

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 March 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):

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: March 23, 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

Exhibit 1

José Claudio Moreira Gonçalves was assigned to the position of Chief Operating Officer; he was chosen by Oi’s Chief Executive Officer, Eurico Teles, from among the candidates included in the three-name list submitted by the Board of Directors, pursuant to Item 9.1.1 (ii), (a) of the Judicial Reorganization Plan of the Company and its subsidiaries in Judicial Reorganization; whereas the position of Chief Commercial Officer will be held by Bernardo Kos Winik. Both José Claudio Moreira Gonçalves and Bernardo Kos Winik have been elected by the Board of Directors to be part of the Company’s Statutory Board of Officers as Officers with no specific titles.

José Claudio Gonçalves holds a Bachelor’s degree in Mechanic Production Engineering from Pontifícia Universidade Católica, Rio de Janeiro (PUC-Rio), an MBA in Logistics from Fundação Getúlio Vargas, Rio de Janeiro (FGV-RJ), an Executive MBA from Fundação Dom Cabral (FDC) and a Post- Executive MBA from the Kellogg School of Management. He built his career in the Telecommunications market and is an expert in the operation, maintenance and technological development of Oi’s networks. He joined Oi in March 2000, having served as Operations Manager, Operations Officer, Network Implementation Officer and Engineering Officer. In June 2011, he was appointed Chief Operations Officer (Vice Presidency of Operations), a position he held to the date of his election as member of the Statutory Board of Officers.

Bernardo Kos Winik holds a Bachelor’s degree in Information Technology from Universidade Mackenzie and an MBA from Escola de Administração de Empresas de São Paulo (EAESP/FGV). He has experience in the Technology, Consulting and Telecommunications markets, having worked in companies such as Claro, BS Consulting, NCR and EDS do Brasil. Since 2014 he has served as Oi’s Retail Executive Officer, and previously held the position of Retail Sales Executive Officer.

Rio de Janeiro, March 23, 2018.

Oi S.A. – In Judicial Reorganization

Carlos Augusto Machado Pereira de Almeida Brandão

Chief Financial Officer and Investor Relations Officer