<SEC-DOCUMENT>0001213900-17-009309-index.html : 20170830 <SEC-HEADER>0001213900-17-009309.hdr.sgml : 20170830 <ACCEPTANCE-DATETIME>20170830164653 ACCESSION NUMBER: 0001213900-17-009309 CONFORMED SUBMISSION TYPE: S-3 PUBLIC DOCUMENT COUNT: 4 FILED AS OF DATE: 20170830 DATE AS OF CHANGE: 20170830 FILER: COMPANY DATA: COMPANY CONFORMED NAME: NextDecade Corp. CENTRAL INDEX KEY: 0001612720 STANDARD INDUSTRIAL CLASSIFICATION: NATURAL GAS TRANSMISSION & DISTRIBUTION [4923] IRS NUMBER: 465723951 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: S-3 SEC ACT: 1933 Act SEC FILE NUMBER: 333-220263 FILM NUMBER: 171061217 BUSINESS ADDRESS: STREET 1: 3 WATERWAY SQUARE PLACE CITY: THE WOODLANDS STATE: TX ZIP: 77380 BUSINESS PHONE: 832-403-1874 MAIL ADDRESS: STREET 1: 3 WATERWAY SQUARE PLACE CITY: THE WOODLANDS STATE: TX ZIP: 77380 FORMER COMPANY: FORMER CONFORMED NAME: Harmony Merger Corp. DATE OF NAME CHANGE: 20140703 </SEC-HEADER> <DOCUMENT> <TYPE>S-3 <SEQUENCE>1 <FILENAME>fs32017_nextdecade.htm <DESCRIPTION>REGISTRATION STATEMENT <TEXT> Document 1 - file: fs32017_nextdecade.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-5.1 <SEQUENCE>2 <FILENAME>fs32017ex5i_nextdecade.htm <DESCRIPTION>OPINION OF KING & SPALDING LLP <TEXT> Document 2 - file: fs32017ex5i_nextdecade.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-23.1 <SEQUENCE>3 <FILENAME>fs32017ex23i_nextdecade.htm <DESCRIPTION>CONSENT OF MARCUM LLP <TEXT> Document 3 - file: fs32017ex23i_nextdecade.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>image_001.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: image_001.jpg
</DOCUMENT> </SEC-DOCUMENT>