FREE WRITING PROSPECTUS

Filed Pursuant to Rule 433

Registration Statement No. 333-227176

As a result of the extension of the period for holders of Common Share Rights to deposit the New Common Share Subscription Price for initial subscriptions of New Common Shares Rights,, the following dates relating to the settlement of the subscriptions received in the Rights Offer to holders of Common ADSs and Preferred ADSs have been modified. All times referred to in this timetable are New York City time unless stated otherwise.

The exchange rate applied to determine the U.S. dollar equivalent of the New Common ADS Subscription Price for Excess New Common ADSs will be the exchange rate determined by the ADS Rights Agent on or prior to January 17, 2019, the deadline established by the ADS Custodian for receipt of the New Common Share Subscription Price from the ADS Depositary with respect to the New Common Shares underlying the Excess New Common ADSs.

Inquiries regarding the Rights Offer should be directed to the Information Agent:

D.F. King & Co., Inc.

48 Wall Street

New York, NY 10005

Banks and Brokers Call: +1 (212) 269-5550

All Others Call: +1 (800) 628-8536

Rio de Janeiro, January 4, 2019.

Oi S.A. – In Judicial Reorganization

Carlos Augusto Machado Pereira de Almeida Brandão

Chief Financial Officer and Investor Relations Officer

Important Information

The offering of Common Shares and Common ADSs upon the exercise of preemptive rights is being made pursuant to an effective registration statement (including a prospectus) that has been filed with the U.S. Securities and Exchange Commission (“SEC”). Before you invest, you should read the prospectus in that registration statement and other documents that Oi has filed with the SEC for more complete information about the company and the offering of Common Shares and Common ADSs upon the exercise of preemptive rights. You may access these documents for free by visiting EDGAR on the SEC web site at www.sec.gov. Alternatively, Oi will arrange to send you the prospectus if you request it by calling toll-free 1-800-628-8536.

Special Note regarding Forward-looking Statements:

This Notice to ADS Holders contains forward-looking statements. Statements that are not historical facts, including statements regarding the beliefs and expectations of the Company, business strategies, future synergies and cost savings, future costs and future liquidity, are forward-looking statements. The words “will,” “will be,” “should,” “could,” “may,” “should be,” “could be,” “may be,” “estimates,” “has as an objective,” “targets,” “target,” “goal,” “anticipates,” “believes,” “expects,” “forecasts,” “intends,” “plans,” “predicts,” “foretells,” “projects,” “points to” and similar expressions, as they relate to the Company, are intended to identify forward-looking statements and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, tendencies or results will actually occur. Such statements reflect the current views of management of the Company, and are subject to a number of risks and uncertainties. These statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, corporate approvals, operational factors and other factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations. All forward-looking statements attributable to the Company or its affiliates, or persons acting on their behalf, are expressly qualified in their entirety by the cautionary statements set forth in this paragraph. Undue reliance should not be placed on such statements. Forward-looking statements speak only as of the date they are made. Except as required under the Brazilian or the U.S. federal securities laws or the rules and regulations of the Brazilian Securities Commission (Comissão de Valores Mobiliários) (“CVM”), SEC or of regulatory authorities in other applicable jurisdictions, the Company and its affiliates do not have any intention or obligation to update or to publicly announce the results of any revisions to any of the forward-looking statements to reflect actual results, future events or developments, changes in assumptions or changes in other factors affecting the forward-looking statements. You are advised, however, to consult any further disclosures the Company makes on related subjects in reports and communications the Company files with the CVM and the SEC.