Notice to Shareholders

Notice to Shareholders - Amendments to the Remote Voting Bulletin 04/18/2018

CNPJ/MF No. 42.150.391/0001-70
NIRE 29.300.006.939
A Publicly-Held Company
Pursuant to article 21-A, §6, of CVM Ruling No. 481, dated as of December 17, 2009, as amended ("CVM Ruling No. 481"), Braskem S.A. ("Braskem" or "Company") (Ticker B3: BRKM3, BRKM5 and BRKM6 / CVM Code No. 00482-0) hereby informs its shareholders and the general market that, on this date, the Remote Voting Ballot disclosed on March 29, 2018, and resubmitted on April 10, 2018, related to matters of the Annual and Extraordinary General Meeting to be held on April 30, 2018 ("Meeting"), at 11:00 am, was resubmitted ("Ballot").
The resubmission of the Ballot relates to the insertion of Mr. Walter Luis Bernandes Albertoni (effective) and Mr. Wilfredo João Vicente Gomes (alternate) as candidates to the separate election of members of the Company's Board of Directors indicated by the preferred minority shareholders, pursuant to article 141, §4, "II" of the Brazilian Corporation Law, with the consequent insertion, in the Ballot, of question 18, related to the insertion of such names, and question 19, related to the application of §5 of the article 141 of the Brazilian Corporation Law if it is verified that neither the holders of common shares nor the holders of preferred shares have reached the quorum legally required in items "I" and "II" of §4 of this same article.
The resubmission of the Ballot occurs under the terms of the article 21-A, §3, "II", of CVM Ruling No. 481, due to the clarification provided to the Company by the minority shareholder that such indication has also been performed under the guidance of article 141, §4, "II" of the Brazilian Corporation Law, by shareholders of preferred shares that represent the necessary percentage to request  the inclusion of candidates in the Distance Voting Ballot, under the terms of article 21-L-/I of CVM Ruling No. 481, and not only by shareholders of common shares, as per the §4, "I", of this same article, and as previously informed to the Company, which, on the other hand, did not own the required percentage.
Considering that the information now included in the Ballot does not affect any of the proposals related to the Meeting, it is important to clarify that the votes included in the Ballots possibly already sent will be considered valid. In case the shareholders intend to send a new Ballot in order to replace the previous one, it must be performed in compliance with limit deadline previously established, correspondent to 7 (seven) days before the Meeting, as disclosed in the CVM Ruling No. 481, preferably to the same service provider previously used.
The Company's Investor Relations Department is at your disposal for any further clarification you may need.
Camaçari, April 18, 2018.
Braskem S.A.
Pedro van Langendonck Teixeira de Freitas
Investor Relations Officer