Other Information
−Removed: Adoption or Termination of Trading Arrangements
−Removed: During the quarter ended March 31, 2026, none of our directors or officers (as defined in Rule 16a-1(f) of the Exchange Act) adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as those terms are defined in Item 408 of Regulation S-K.
+Added: (c) Adoption or Termination of Trading Arrangements
+Added: Consistent with Item 408 of Regulation S-K, the following table reflects Rule 10b5-1 trading arrangements and non-Rule 10b5-1 trading arrangements (as defined in Item 408) entered into by any director or officer (as defined in Rule 16a-1(f) of the Exchange Act) during the quarter ended June 30, 2026.
+Added: (Title) Type of Trading Arrangement Date of Adoption Expiration Date of Trading Arrangement Aggregate Number of Securities to Be Purchased or Sold
+Added: Christopher D.
+Added: (Chief Executive Officer and President)
+Added: Rule 10b5-1 Trading Arrangement May 12, 2026 February 26, 2027 or such earlier date upon the completion of all trades under the plan or the occurrence of such other termination events under the plan.
+Added: Sale of 15,000 shares of common stock
3.1 Restated Certificate of Incorporation of Huntington Ingalls Industries, Inc., dated April 30, 2025 (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on May 5, 2025, File No.
3.2 Restated Bylaws of Huntington Ingalls Industries, Inc., dated April 30, 2025 (incorporated by reference to Exhibit 3.2 to the Company's Current Report on Form 8-K filed on May 5, 2025, File No.
−Removed: 10.1* Terms and Conditions Applicable to Restricted Performance Stock Rights Granted Under the 2022 Long-Term Incentive Stock Plan, as amended February 2026 .
−Removed: 10.2* Terms and Conditions Applicable to Ratable Vesting Restricted Stock Rights Granted Under the 2022 Long-Term Incentive Stock Plan, as amended February 2026.
−Removed: 10.3* Terms and Conditions Applicable to Cliff Vesting Restricted Stock Rights Granted Under the 2022 Long-Term Incentive Stock Plan, as amended February 2026.
31.1 Certification of the Chief Executive Officer Pursuant to Exchange Act Rule 13a-14(a)/15d-14(a), as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
7 unchanged sentences
104 The cover page from the Company’s Quarterly Report on Form 10-Q, formatted in Inline XBRL and contained in Exhibit 101.
−Removed: *Indicates management contract or compensatory plan or arrangement.
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
−Removed: May 5, 2026 Huntington Ingalls Industries, Inc.
+Added: July 30, 2026 Huntington Ingalls Industries, Inc.
/s/ Nicolas Schuck
3 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.