Sec Form 4 Filing - VALINOR MANAGEMENT, L.P. @ NextDecade Corp. - 2021-08-05

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person VALINOR MANAGEMENT, L.P. 2. Issuer Name and Ticker or Trading Symbol NextDecade Corp. [ NEXT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 510 MADISON AVENUE, 25TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 08/05/2021 (Street) NEW YORK, NY10022 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $ 0.0001 par value 08/05/2021 J 1,101,539 ( 1 ) D 18,449,795 I See note ( 3 ) Common Stock, $ 0.0001 par value 08/06/2021 J 3,712,432 ( 1 ) D 14,737,363 ( 2 ) I See note ( 3 ) Common Stock, $ 0.0001 par value 307,403 ( 4 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other VALINOR MANAGEMENT, L.P. 510 MADISON AVENUE 25TH FLOOR NEW YORK, NY10022 X Gallo David C/O VALINOR MANAGEMENT, L.P. 510 MADISON AVE., 25TH FL. NEW YORK, NY10022 X Valinor Associates, LLC C/O VALINOR MANAGEMENT, L.P. 510 MADISON AVE., 25TH FL. NEW YORK, NY10022 X Signatures By: See Exhibit 99.1 for signatures 08/09/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents shares distributed by VND Partners, L.P. ("VND Partners") to its limited partners on a pro-rata basis, for no additional consideration. ( 2 )Represents 3,832,630 shares directly held by Valinor Capital Partners, L.P. ("Valinor Capital") and 10,904,733 shares directly held by Valinor Capital Partners Offshore Master Fund, L.P. ("Valinor Capital Offshore"). ( 3 )Valinor Management, L.P. ("Valinor Management") serves as investment manager to Valinor Capital, Valinor Capital Offshore and VND Partners. David Gallo is the Founder, Managing Partner and Portfolio Manager of Valinor Management and is the managing member of Valinor Associates, LLC ("Associates"), which serves as general partner to Valinor Capital, Valinor Capital Offshore and VND Partners. Each of Valinor Management, Associates and David Gallo may be deemed to beneficially own the securities held by Valinor Capital, Valinor Capital Offshore and VND Partners and each of Valinor Management, Associates and David Gallo disclaims beneficial ownership of the reported shares, except to the extent of its or his pecuniary interest. ( 4 )Represents shares directly held by David Gallo following the reported transactions.

Remarks: Exhibit 99.1 (Joint Filer Information) is incorporated herein by reference. This Form 4 is filed by Designated Filer Valinor Management LP.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.