What changed in this filing

/stocks — the workspaceLOADING

Item 5. Other Information

2026-05-01 compared with 2025-10-30 · 17 added, 38 removed, 35 unchanged (61% of the section changed)

1 unchanged sentence

Securities Trading Plans of Directors and Executive Officers

During the three months ended September 30, 2025, none of our directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement.”

During the three months ended March 31, 2026, none of our directors or executive officers adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement.”

3.1 Second Amended and Restated Certificate of Incorporation of NextDecade Corporation, dated July 24, 2017(Incorporated by reference to Exhibit 3.1 of the Registrant’s Current Report on Form 8-K, filed July 28, 2017).

7 unchanged sentences

3.9 Certificate of Increase to Certificate of Designations of Series B Convertible Preferred Stock of NextDecade Corporation, dated July 15, 2019 (Incorporated by reference to Exhibit 3.8 of the Registrant’s Quarterly Report on Form 10-Q, filed August 6, 2019).

10.1*† Amendment to Amended and Restated Limited Liability Company Agreement of Rio Grande LNG Intermediate Holdings, LLC, dated as of August 8, 2025

10.2* Amendment No.

1 to the Amended and Restated Fixed Price Turnkey Agreement for the Engineering, Procurement and Construction of Train 4 of the Rio Grande Natural Gas Liquefaction Facility, made and executed as of August 19, 2025, by and between Rio Grande LNG Train 4, LLC and Bechtel Energy Inc.

10.3* Amendment No.

1 to the Fixed Price Turnkey Agreement for the Engineering, Procurement and Construction of Train 5 of the Rio Grande Natural Gas Liquefaction Facility, made and executed as of August 19, 2025, by and between Rio Grande LNG Train 5, LLC and Bechtel Energy Inc.

10.4*† Amendment No.

2 to the Fixed Price Turnkey Agreement for the Engineering, Procurement and Construction of Train 5 of the Rio Grande Natural Gas Liquefaction Facility, made and executed as of September 2, 2025, by and between Rio Grande LNG Train 5, LLC and Bechtel Energy Inc.

10.5* Second Amendment to Credit Agreement, dated as of September 4, 2025, by and among Rio Grande LNG, LLC, as Borrower, MUFG Bank, Ltd., as P1 Administrative Agent and as the Revolving LC Issuing Bank , Mizuho Bank (USA), as P1 Collateral Agent, and the other agents and lenders party thereto

10.6* Second Amendment to Credit Agreement, dated as of September 4, 2025, by and among Rio Grande LNG, LLC, as Borrower, TotalEnergies Holdings SAS, MUFG Bank, Ltd., as TCF Administrative Agent, Mizuho Bank (USA), as P1 Collateral Agent, and the other agents and lenders party thereto

10.7* Third Amendment to Common Terms Agreement, dated as of September 4, 2025, by and among Rio Grande LNG, LLC, as Borrower, MUFG Bank, Ltd., as P1 Intercreditor Agent, and the senior secured debt holder representatives party thereto from time to time

10.8* Credit Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Train 4, LLC, MUFG Bank, Ltd., as T4 Administrative Agent, Mizuho Bank (USA), as T4 Collateral Agent, and the other agents and lenders party thereto

10.9* Common Terms Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Train 4, LLC, as Borrower, MUFG Bank, Ltd., as T4 Intercreditor Agent, and the senior secured debt holder representatives party thereto from time to time

10.10* Accounts Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Train 4, LLC, as Borrower, Mizuho Bank (USA), as T4 Collateral Agent, and JPMorgan Chase Bank, N.A., as T4 Accounts Bank

10.11* Collateral and Intercreditor Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Train 4, LLC, as Borrower, MUFG Bank, Ltd., as T4 Intercreditor Agent, Mizuho Bank (USA), as T4 Collateral Agent, and the senior secured debt holder representatives party thereto from time to time

10.12* Pledge Agreement, dated as of September 9, 2025, by and between Rio Grande LNG Train 4 Holdings, LLC, as Pledgor, and Mizuho Bank (USA), as T4 Collateral Agent

10.13*† Amended and Restated Limited Liability Company Agreement of Rio Grande LNG Train 4 Intermediate Holdings, LLC, dated as of September 9, 2025

10.14* Credit Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Phase 1 FinCo, LLC, as P1 FinCo Borrower, Rio Grande LNG Phase 2 FinCo, LLC, as P2 FinCo Borrower, MUFG Bank, Ltd., as FinCo Administrative Agent, HSBC Bank USA, N.A., as FinCo Collateral Agent, and the other lenders party thereto

10.15* Accounts Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Phase 1 FinCo, LLC, as P1 FinCo Borrower, Rio Grande LNG Phase 2 FinCo, LLC, as P2 FinCo Borrower, HSBC Bank USA, N.A., as FinCo Collateral Agent and Deutsche Bank National Trust Company, as FinCo Accounts Bank

10.16* Pledge Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Phase 1 FinCo Holdings, LLC, Rio Grande LNG Phase 2 FinCo Holdings, LLC, Rio Grande LNG Phase 1 Holdings, LLC and HSBC Bank USA, N.A., as FinCo Collateral Agent

10.17* Credit Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Phase 1 Super FinCo, LLC, as P1 Super FinCo Borrower, Rio Grande LNG Phase 2 Super FinCo, LLC, as P2 Super FinCo Borrower, GLAS USA LLC, as Administrative Agent and Collateral Agent, and the lenders party thereto

10.18* Pledge Agreement, dated as of September 9, 2025, by and among Rio Grande LNG Phase 1 Super FinCo Holdings, LLC, Rio Grande LNG Phase 2 Super FinCo Holdings, LLC, and GLAS USA LLC, as Collateral Agent

10.1*† Second Amendment to Amended and Restated Limited Liability Company Agreement of Rio Grande LNG Intermediate Holdings, LLC, dated as of March 2, 2026.

10.2*† Amendment to Amended and Restated Limited Liability Company Agreement of Rio Grande LNG Train 4 Intermediate Holdings, LLC, dated as of March 2, 2026.

10.3*† Change Orders to the Amended and Restated Fixed Price Turnkey Agreement for the Engineering, Procurement and Construction of Trains 1 and 2 of the Rio Grande Natural Gas Liquefaction Facility, made and executed as of September 14, 2022, by and between Rio Grande LNG, LLC and Bechtel Energy Inc.:

(i) EC00242, dated as of July 4, 2025;

(ii) EC00229, dated as of July 29, 2025;

(iii) EC00209 and EC00251, each dated as of July 30, 2025;

(iv) EC00247, dated as of August 15, 2025;

(v) EC00240, dated as of September 5, 2025;

and (vi) EC00244, dated as of September 19, 2025

(i) EC00273, dated as of February 6, 2026;

(ii) EC00258, dated as of February 20, 2026;

(iii) EC00235, dated as of March 10, 2026;

(iv) EC00282, dated as of March 17, 2026;

and (v) EC00287, dated as of March 25, 2026.

10.4*† Change Orders to the Amended and Restated Fixed Price Turnkey Agreement for the Engineering, Procurement and Construction of Train 3 of the Rio Grande Natural Gas Liquefaction Facility, made and executed as of September 15, 2022, by and between Rio Grande LNG, LLC and Bechtel Energy Inc.:

(i) EC00243, dated as of July 4, 2025;

(ii) EC00230, dated as of July 29, 2025;

(iii) EC00252, dated as of July 30, 2025;

(iv) EC00248, dated as of August 15, 2025;

(v) EC00245, dated as of September 19, 2025

10.21*† Change Orders to the Amended and Restated Fixed Price Turnkey Agreement for the Engineering, Procurement and Construction of Train 4 of the Rio Grande Natural Gas Liquefaction Facility, made and executed as of August 19, 2025, by and between Rio Grande LNG Train 4, LLC and Bechtel Energy Inc.:

(i) EC40016, dated as of September 4, 2025;

and (ii) EC40001-EC40012, EC40014-40015, and EC40020, each dated as of September 10, 2025

(i) EC00274, dated as of February 6, 2026;

(ii) EC00237, dated as of March 10, 2026;

(iii) EC00283, dated as of March 17, 2026;

and (iv) EC00288, dated as of March 25, 2026.

10.5*† Change Orders to the Amended and Restated Fixed Price Turnkey Agreement for the Engineering, Procurement and Construction of Train 4 of the Rio Grande Natural Gas Liquefaction Facility, made and executed as of June 7, 2025, by and between Rio Grande LNG Train 4, LLC and Bechtel Energy Inc.:

(i) EC40013 and EC40033, each dated as of February 6, 2026;

and (ii) EC40031, dated as of March 17, 2026.

31.1* Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

14 unchanged sentences

NEXTDECADE CORPORATION

October 30, 2025

April 30, 2026

/s/ Matthew K.

1 unchanged sentence

(Principal Executive Officer)

October 30, 2025

April 30, 2026

/s/ Michael R.

2 unchanged sentences

Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-Q

Item 5. Other Information