0001501585-22-000007 Sample Contracts

FIRST SUPPLEMENTAL INDENTURE dated as of December 14, 2021 among Huntington Ingalls Industries, Inc., The Guarantors Party Hereto and U.S. Bank National Association, as Trustee

First Supplemental Indenture • February 10th, 2022 • Huntington Ingalls Industries, Inc. • Ship & boat building & repairing • New York

• Contract Type
  First Supplemental Indenture
• Filed
  February 10th, 2022
• Company
  Huntington Ingalls Industries, Inc.
• Industry
  Ship & boat building & repairing
• Jurisdiction
  New York

THIS FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), entered into as of December 14, 2021, among Huntington Ingalls Industries, Inc., a Delaware corporation (the “Company”), Alion Holding Corp., a Delaware corporation (“Alion Holding”), Alion Science and Technology Corporation, a Delaware corporation (“Alion Science”), MacAulay-Brown, Inc., an Ohio corporation (“MacB”), Commonwealth Technology Innovation LLC, a Virginia limited liability company (“CTI”) and Enlighten IT Consulting LLC, a Maryland limited liability company (“Enlighten,” and each of Alion Holding, Alion Science, MacB, and CTI, an “Undersigned”), and U.S. Bank National Association, as trustee (the “Trustee”).

THIRD SUPPLEMENTAL INDENTURE dated as of December 14, 2021 among Huntington Ingalls Industries, Inc., The Guarantors Party Hereto and Wells Fargo Bank, National Association, as Trustee

Third Supplemental Indenture • February 10th, 2022 • Huntington Ingalls Industries, Inc. • Ship & boat building & repairing • New York

• Contract Type
  Third Supplemental Indenture
• Filed
  February 10th, 2022
• Company
  Huntington Ingalls Industries, Inc.
• Industry
  Ship & boat building & repairing
• Jurisdiction
  New York

THIS THIRD SUPPLEMENTAL INDENTURE (this “Third Supplemental Indenture”), entered into as of December 14, 2021, among Huntington Ingalls Industries, Inc., a Delaware corporation (the “Company”), Alion Holding Corp., a Delaware corporation (“Alion Holding”), Alion Science and Technology Corporation, a Delaware corporation (“Alion Science”), MacAulay-Brown, Inc., an Ohio corporation (“MacB”), Commonwealth Technology Innovation LLC, a Virginia limited liability company (“CTI”) and Enlighten IT Consulting LLC, a Maryland limited liability company (“Enlighten,” and each of Alion Holding, Alion Science, MacB, and CTI, an “Undersigned”), and Wells Fargo Bank, National Association, as trustee (the “Trustee”).